mirror of https://gogs.blitter.com/RLabs/xs
Added vendor/ dir to remove dependencies on gopkg.in (down Aug 12 2022)
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Russ Magee
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GNU AFFERO GENERAL PUBLIC LICENSE
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Version 3, 19 November 2007
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Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Remote Network Interaction; Use with the GNU General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, if you modify the
|
||||
Program, your modified version must prominently offer all users
|
||||
interacting with it remotely through a computer network (if your version
|
||||
supports such interaction) an opportunity to receive the Corresponding
|
||||
Source of your version by providing access to the Corresponding Source
|
||||
from a network server at no charge, through some standard or customary
|
||||
means of facilitating copying of software. This Corresponding Source
|
||||
shall include the Corresponding Source for any work covered by version 3
|
||||
of the GNU General Public License that is incorporated pursuant to the
|
||||
following paragraph.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the work with which it is combined will remain governed by version
|
||||
3 of the GNU General Public License.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU Affero General Public License from time to time. Such new versions
|
||||
will be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU Affero General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU Affero General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU Affero General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Affero General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Affero General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Affero General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If your software can interact with users remotely through a computer
|
||||
network, you should also make sure that it provides a way for users to
|
||||
get its source. For example, if your program is a web application, its
|
||||
interface could display a "Source" link that leads users to an archive
|
||||
of the code. There are many ways you could offer source, and different
|
||||
solutions will be better for different programs; see section 13 for the
|
||||
specific requirements.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU AGPL, see
|
||||
<http://www.gnu.org/licenses/>.
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
### chacha20 - ChaCha20
|
||||
#### Yawning Angel (yawning at schwanenlied dot me)
|
||||
|
||||
Yet another Go ChaCha20 implementation. Everything else I found was slow,
|
||||
didn't support all the variants I need to use, or relied on cgo to go fast.
|
||||
|
||||
Features:
|
||||
|
||||
* 20 round, 256 bit key only. Everything else is pointless and stupid.
|
||||
* IETF 96 bit nonce variant.
|
||||
* XChaCha 24 byte nonce variant.
|
||||
* SSSE3 and AVX2 support on amd64 targets.
|
||||
* Incremental encrypt/decrypt support, unlike golang.org/x/crypto/salsa20.
|
||||
|
|
@ -0,0 +1,290 @@
|
|||
// Copryright (C) 2019 Yawning Angel
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Affero General Public License as
|
||||
// published by the Free Software Foundation, either version 3 of the
|
||||
// License, or (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// Package chacha20 implements the ChaCha20 stream cipher.
|
||||
package chacha20 // import "blitter.com/go/chacha20"
|
||||
|
||||
import (
|
||||
"crypto/cipher"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"math"
|
||||
|
||||
"blitter.com/go/chacha20/internal/api"
|
||||
"blitter.com/go/chacha20/internal/hardware"
|
||||
"blitter.com/go/chacha20/internal/ref"
|
||||
)
|
||||
|
||||
const (
|
||||
// KeySize is the ChaCha20 key size in bytes.
|
||||
KeySize = 32
|
||||
|
||||
// NonceSize is the ChaCha20 nonce size in bytes.
|
||||
NonceSize = 8
|
||||
|
||||
// INonceSize is the IETF ChaCha20 nonce size in bytes.
|
||||
INonceSize = 12
|
||||
|
||||
// XNonceSize is the XChaCha20 nonce size in bytes.
|
||||
XNonceSize = 24
|
||||
|
||||
// HNonceSize is the HChaCha20 nonce size in bytes.
|
||||
HNonceSize = 16
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrInvalidKey is the error returned when the key is invalid.
|
||||
ErrInvalidKey = errors.New("chacha20: key length must be KeySize bytes")
|
||||
|
||||
// ErrInvalidNonce is the error returned when the nonce is invalid.
|
||||
ErrInvalidNonce = errors.New("chacha20: nonce length must be NonceSize/INonceSize/XNonceSize bytes")
|
||||
|
||||
// ErrInvalidCounter is the error returned when the counter is invalid.
|
||||
ErrInvalidCounter = errors.New("chacha20: block counter is invalid (out of range)")
|
||||
|
||||
supportedImpls []api.Implementation
|
||||
activeImpl api.Implementation
|
||||
|
||||
_ cipher.Stream = (*Cipher)(nil)
|
||||
)
|
||||
|
||||
// Cipher is an instance of ChaCha20/XChaCha20 using a particular key and nonce.
|
||||
type Cipher struct {
|
||||
state [api.StateSize]uint32
|
||||
buf [api.BlockSize]byte
|
||||
|
||||
off int
|
||||
ietf bool
|
||||
}
|
||||
|
||||
// Reset zeros the key data so that it will no longer appear in the process's
|
||||
// memory.
|
||||
func (c *Cipher) Reset() {
|
||||
for i := range c.state {
|
||||
c.state[i] = 0
|
||||
}
|
||||
for i := range c.buf {
|
||||
c.buf[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
// Seek sets the block counter to a given offset.
|
||||
func (c *Cipher) Seek(blockCounter uint64) error {
|
||||
if c.ietf {
|
||||
if blockCounter > math.MaxUint32 {
|
||||
return ErrInvalidCounter
|
||||
}
|
||||
c.state[12] = uint32(blockCounter)
|
||||
} else {
|
||||
c.state[12] = uint32(blockCounter)
|
||||
c.state[13] = uint32(blockCounter >> 32)
|
||||
}
|
||||
c.off = api.BlockSize
|
||||
return nil
|
||||
}
|
||||
|
||||
// ReKey reinitializes the ChaCha20/XChaCha20 instance with the provided key
|
||||
// and nonce.
|
||||
func (c *Cipher) ReKey(key, nonce []byte) error {
|
||||
c.Reset()
|
||||
return c.doReKey(key, nonce)
|
||||
}
|
||||
|
||||
func (c *Cipher) doReKey(key, nonce []byte) error {
|
||||
if len(key) != KeySize {
|
||||
return ErrInvalidKey
|
||||
}
|
||||
|
||||
var subKey []byte
|
||||
switch len(nonce) {
|
||||
case NonceSize, INonceSize:
|
||||
case XNonceSize:
|
||||
subKey = c.buf[:KeySize]
|
||||
activeImpl.HChaCha(key, nonce, subKey)
|
||||
key = subKey
|
||||
nonce = nonce[16:24]
|
||||
default:
|
||||
return ErrInvalidNonce
|
||||
}
|
||||
|
||||
_ = key[31] // Force bounds check elimination.
|
||||
|
||||
c.state[0] = api.Sigma0
|
||||
c.state[1] = api.Sigma1
|
||||
c.state[2] = api.Sigma2
|
||||
c.state[3] = api.Sigma3
|
||||
c.state[4] = binary.LittleEndian.Uint32(key[0:4])
|
||||
c.state[5] = binary.LittleEndian.Uint32(key[4:8])
|
||||
c.state[6] = binary.LittleEndian.Uint32(key[8:12])
|
||||
c.state[7] = binary.LittleEndian.Uint32(key[12:16])
|
||||
c.state[8] = binary.LittleEndian.Uint32(key[16:20])
|
||||
c.state[9] = binary.LittleEndian.Uint32(key[20:24])
|
||||
c.state[10] = binary.LittleEndian.Uint32(key[24:28])
|
||||
c.state[11] = binary.LittleEndian.Uint32(key[28:32])
|
||||
c.state[12] = 0
|
||||
if len(nonce) == INonceSize {
|
||||
_ = nonce[11] // Force bounds check elimination.
|
||||
c.state[13] = binary.LittleEndian.Uint32(nonce[0:4])
|
||||
c.state[14] = binary.LittleEndian.Uint32(nonce[4:8])
|
||||
c.state[15] = binary.LittleEndian.Uint32(nonce[8:12])
|
||||
c.ietf = true
|
||||
} else {
|
||||
_ = nonce[7] // Force bounds check elimination.
|
||||
c.state[13] = 0
|
||||
c.state[14] = binary.LittleEndian.Uint32(nonce[0:4])
|
||||
c.state[15] = binary.LittleEndian.Uint32(nonce[4:8])
|
||||
c.ietf = false
|
||||
}
|
||||
c.off = api.BlockSize
|
||||
|
||||
if subKey != nil {
|
||||
for i := range subKey {
|
||||
subKey[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// New returns a new ChaCha20/XChaCha20 instance.
|
||||
func New(key, nonce []byte) (*Cipher, error) {
|
||||
var c Cipher
|
||||
if err := c.doReKey(key, nonce); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &c, nil
|
||||
}
|
||||
|
||||
// HChaCha is the HChaCha20 hash function used to make XChaCha.
|
||||
func HChaCha(key, nonce []byte, dst *[32]byte) {
|
||||
activeImpl.HChaCha(key, nonce, dst[:])
|
||||
}
|
||||
|
||||
// XORKeyStream sets dst to the result of XORing src with the key stream. Dst
|
||||
// and src may be the same slice but otherwise should not overlap.
|
||||
func (c *Cipher) XORKeyStream(dst, src []byte) {
|
||||
if len(dst) < len(src) {
|
||||
src = src[:len(dst)]
|
||||
}
|
||||
|
||||
for remaining := len(src); remaining > 0; {
|
||||
// Process multiple blocks at once.
|
||||
if c.off == api.BlockSize {
|
||||
nrBlocks := remaining / api.BlockSize
|
||||
directBytes := nrBlocks * api.BlockSize
|
||||
if nrBlocks > 0 {
|
||||
c.doBlocks(dst, src, nrBlocks)
|
||||
remaining -= directBytes
|
||||
if remaining == 0 {
|
||||
return
|
||||
}
|
||||
dst = dst[directBytes:]
|
||||
src = src[directBytes:]
|
||||
}
|
||||
|
||||
// If there's a partial block, generate 1 block of keystream into
|
||||
// the internal buffer.
|
||||
c.doBlocks(c.buf[:], nil, 1)
|
||||
c.off = 0
|
||||
}
|
||||
|
||||
// Process partial blocks from the buffered keystream.
|
||||
toXor := api.BlockSize - c.off
|
||||
if remaining < toXor {
|
||||
toXor = remaining
|
||||
}
|
||||
if toXor > 0 {
|
||||
// The inliner doesn't want to inline this function, but my
|
||||
// attempts to force BCE don't seem to work with manual
|
||||
// inlining.
|
||||
//
|
||||
// Taking the extra function call overhead here appears to be
|
||||
// worth it.
|
||||
c.xorBufBytes(dst, src, toXor)
|
||||
|
||||
dst = dst[toXor:]
|
||||
src = src[toXor:]
|
||||
|
||||
remaining -= toXor
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Cipher) xorBufBytes(dst, src []byte, n int) {
|
||||
// Force bounds check elimination.
|
||||
buf := c.buf[c.off:]
|
||||
_ = buf[n-1]
|
||||
_ = dst[n-1]
|
||||
_ = src[n-1]
|
||||
|
||||
for i := 0; i < n; i++ {
|
||||
dst[i] = buf[i] ^ src[i]
|
||||
}
|
||||
c.off += n
|
||||
}
|
||||
|
||||
// KeyStream sets dst to the raw keystream.
|
||||
func (c *Cipher) KeyStream(dst []byte) {
|
||||
for remaining := len(dst); remaining > 0; {
|
||||
// Process multiple blocks at once.
|
||||
if c.off == api.BlockSize {
|
||||
nrBlocks := remaining / api.BlockSize
|
||||
directBytes := nrBlocks * api.BlockSize
|
||||
if nrBlocks > 0 {
|
||||
c.doBlocks(dst, nil, nrBlocks)
|
||||
remaining -= directBytes
|
||||
if remaining == 0 {
|
||||
return
|
||||
}
|
||||
dst = dst[directBytes:]
|
||||
}
|
||||
|
||||
// If there's a partial block, generate 1 block of keystream into
|
||||
// the internal buffer.
|
||||
c.doBlocks(c.buf[:], nil, 1)
|
||||
c.off = 0
|
||||
}
|
||||
|
||||
// Process partial blocks from the buffered keystream.
|
||||
toCopy := api.BlockSize - c.off
|
||||
if remaining < toCopy {
|
||||
toCopy = remaining
|
||||
}
|
||||
if toCopy > 0 {
|
||||
copy(dst[:toCopy], c.buf[c.off:c.off+toCopy])
|
||||
dst = dst[toCopy:]
|
||||
remaining -= toCopy
|
||||
c.off += toCopy
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Cipher) doBlocks(dst, src []byte, nrBlocks int) {
|
||||
if c.ietf {
|
||||
ctr := uint64(c.state[12])
|
||||
if ctr+uint64(nrBlocks) > math.MaxUint32 {
|
||||
panic("chacha20: will exceed key stream per nonce limit")
|
||||
}
|
||||
}
|
||||
|
||||
activeImpl.Blocks(&c.state, dst, src, nrBlocks)
|
||||
}
|
||||
|
||||
func init() {
|
||||
supportedImpls = hardware.Register(supportedImpls)
|
||||
supportedImpls = ref.Register(supportedImpls)
|
||||
activeImpl = supportedImpls[0]
|
||||
}
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
// Copryright (C) 2019 Yawning Angel
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Affero General Public License as
|
||||
// published by the Free Software Foundation, either version 3 of the
|
||||
// License, or (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// Package api provides the ChaCha20 implementation abstract interface.
|
||||
package api
|
||||
|
||||
const (
|
||||
// BlockSize is the size of a ChaCha20 block in bytes.
|
||||
BlockSize = 64
|
||||
|
||||
// StateSize is the size of the ChaCha20 state as 32 bit unsigned words.
|
||||
StateSize = 16
|
||||
|
||||
// HashSize is the size of the HChaCha output in bytes.
|
||||
HashSize = 32
|
||||
|
||||
// HNonceSize is the HChaCha20 nonce size in bytes.
|
||||
HNonceSize = 16
|
||||
|
||||
// Sigma0 is the first word of the ChaCha constant.
|
||||
Sigma0 = uint32(0x61707865)
|
||||
|
||||
// Sigma1 is the second word of the ChaCha constant.
|
||||
Sigma1 = uint32(0x3320646e)
|
||||
|
||||
// Sigma2 is the third word of the ChaCha constant.
|
||||
Sigma2 = uint32(0x79622d32)
|
||||
|
||||
// Sigma3 is the fourth word of the ChaCha constant.
|
||||
Sigma3 = uint32(0x6b206574)
|
||||
)
|
||||
|
||||
// Implementation is a ChaCha20 implementation
|
||||
type Implementation interface {
|
||||
// Name returns the name of the implementation.
|
||||
Name() string
|
||||
|
||||
// Blocks calculates the ChaCha20 blocks. If src is not nil, dst will
|
||||
// be set to the XOR of src with the key stream, otherwise dst will be
|
||||
// set to the key stream.
|
||||
Blocks(x *[StateSize]uint32, dst, src []byte, nrBlocks int)
|
||||
|
||||
// HChaCha calculates the HChaCha20 hash.
|
||||
//
|
||||
// Note: `dst` is guaranteed to be HashSize bytes.
|
||||
HChaCha(key, nonce []byte, dst []byte)
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
// Copryright (C) 2019 Yawning Angel
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Affero General Public License as
|
||||
// published by the Free Software Foundation, either version 3 of the
|
||||
// License, or (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// Package hardware provides the hardware accelerated ChaCha20 implementations.
|
||||
package hardware
|
||||
|
||||
import "blitter.com/go/chacha20/internal/api"
|
||||
|
||||
var hardwareImpls []api.Implementation
|
||||
|
||||
// Register appends the implementation(s) to the provided slice, and returns the
|
||||
// new slice.
|
||||
func Register(impls []api.Implementation) []api.Implementation {
|
||||
return append(impls, hardwareImpls...)
|
||||
}
|
||||
|
|
@ -0,0 +1,88 @@
|
|||
// Copryright (C) 2019 Yawning Angel
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Affero General Public License as
|
||||
// published by the Free Software Foundation, either version 3 of the
|
||||
// License, or (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// +build amd64,!noasm
|
||||
|
||||
package hardware
|
||||
|
||||
import (
|
||||
"golang.org/x/sys/cpu"
|
||||
|
||||
"blitter.com/go/chacha20/internal/api"
|
||||
)
|
||||
|
||||
//go:noescape
|
||||
func blocksAVX2(s *[api.StateSize]uint32, in, out []byte)
|
||||
|
||||
//go:noescape
|
||||
func hChaChaAVX2(key, nonce []byte, dst *byte)
|
||||
|
||||
//go:noescape
|
||||
func blocksSSSE3(s *[api.StateSize]uint32, in, out []byte)
|
||||
|
||||
//go:noescape
|
||||
func hChaChaSSSE3(key, nonce []byte, dst *byte)
|
||||
|
||||
type implAmd64 struct {
|
||||
name string
|
||||
|
||||
blocksFn func(*[api.StateSize]uint32, []byte, []byte, int)
|
||||
hChaChaFn func([]byte, []byte, *byte)
|
||||
}
|
||||
|
||||
func (impl *implAmd64) Name() string {
|
||||
return impl.name
|
||||
}
|
||||
|
||||
func (impl *implAmd64) Blocks(x *[api.StateSize]uint32, dst, src []byte, nrBlocks int) {
|
||||
impl.blocksFn(x, dst, src, nrBlocks)
|
||||
}
|
||||
|
||||
func (impl *implAmd64) HChaCha(key, nonce []byte, dst []byte) {
|
||||
impl.hChaChaFn(key, nonce, &dst[0])
|
||||
}
|
||||
|
||||
func blockWrapper(fn func(*[api.StateSize]uint32, []byte, []byte)) func(*[api.StateSize]uint32, []byte, []byte, int) {
|
||||
return func(x *[api.StateSize]uint32, dst, src []byte, nrBlocks int) {
|
||||
sz := nrBlocks * api.BlockSize
|
||||
if src != nil {
|
||||
fn(x, src[:sz], dst[:sz])
|
||||
} else {
|
||||
// Sub-optimal, but the compiler special cases this to an assembly
|
||||
// optimized runtime.memclrNoHeapPointers, so it's not terrible.
|
||||
for i := range dst[:sz] {
|
||||
dst[i] = 0
|
||||
}
|
||||
fn(x, dst[:sz], dst[:sz])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func init() {
|
||||
if cpu.X86.HasAVX2 {
|
||||
hardwareImpls = append(hardwareImpls, &implAmd64{
|
||||
name: "amd64_avx2",
|
||||
blocksFn: blockWrapper(blocksAVX2),
|
||||
hChaChaFn: hChaChaAVX2,
|
||||
})
|
||||
}
|
||||
if cpu.X86.HasSSE3 {
|
||||
hardwareImpls = append(hardwareImpls, &implAmd64{
|
||||
name: "amd64_ssse3",
|
||||
blocksFn: blockWrapper(blocksSSSE3),
|
||||
hChaChaFn: hChaChaSSSE3,
|
||||
})
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,374 @@
|
|||
// Copryright (C) 2019 Yawning Angel
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Affero General Public License as
|
||||
// published by the Free Software Foundation, either version 3 of the
|
||||
// License, or (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// Package ref provides the portable ChaCha20 implementation.
|
||||
package ref
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"math/bits"
|
||||
|
||||
"blitter.com/go/chacha20/internal/api"
|
||||
)
|
||||
|
||||
const rounds = 20
|
||||
|
||||
// Impl is the reference implementation (exposed for testing).
|
||||
var Impl = &implRef{}
|
||||
|
||||
type implRef struct{}
|
||||
|
||||
func (impl *implRef) Name() string {
|
||||
return "ref"
|
||||
}
|
||||
|
||||
func (impl *implRef) Blocks(x *[api.StateSize]uint32, dst, src []byte, nrBlocks int) {
|
||||
for n := 0; n < nrBlocks; n++ {
|
||||
x0, x1, x2, x3 := api.Sigma0, api.Sigma1, api.Sigma2, api.Sigma3
|
||||
x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15 := x[4], x[5], x[6], x[7], x[8], x[9], x[10], x[11], x[12], x[13], x[14], x[15]
|
||||
|
||||
for i := rounds; i > 0; i -= 2 {
|
||||
// quarterround(x, 0, 4, 8, 12)
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = bits.RotateLeft32(x12, 16)
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = bits.RotateLeft32(x4, 12)
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = bits.RotateLeft32(x12, 8)
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = bits.RotateLeft32(x4, 7)
|
||||
|
||||
// quarterround(x, 1, 5, 9, 13)
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = bits.RotateLeft32(x13, 16)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = bits.RotateLeft32(x5, 12)
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = bits.RotateLeft32(x13, 8)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = bits.RotateLeft32(x5, 7)
|
||||
|
||||
// quarterround(x, 2, 6, 10, 14)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = bits.RotateLeft32(x14, 16)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = bits.RotateLeft32(x6, 12)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = bits.RotateLeft32(x14, 8)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = bits.RotateLeft32(x6, 7)
|
||||
|
||||
// quarterround(x, 3, 7, 11, 15)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = bits.RotateLeft32(x15, 16)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = bits.RotateLeft32(x7, 12)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = bits.RotateLeft32(x15, 8)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = bits.RotateLeft32(x7, 7)
|
||||
|
||||
// quarterround(x, 0, 5, 10, 15)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = bits.RotateLeft32(x15, 16)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = bits.RotateLeft32(x5, 12)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = bits.RotateLeft32(x15, 8)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = bits.RotateLeft32(x5, 7)
|
||||
|
||||
// quarterround(x, 1, 6, 11, 12)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = bits.RotateLeft32(x12, 16)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = bits.RotateLeft32(x6, 12)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = bits.RotateLeft32(x12, 8)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = bits.RotateLeft32(x6, 7)
|
||||
|
||||
// quarterround(x, 2, 7, 8, 13)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = bits.RotateLeft32(x13, 16)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = bits.RotateLeft32(x7, 12)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = bits.RotateLeft32(x13, 8)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = bits.RotateLeft32(x7, 7)
|
||||
|
||||
// quarterround(x, 3, 4, 9, 14)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = bits.RotateLeft32(x14, 16)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = bits.RotateLeft32(x4, 12)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = bits.RotateLeft32(x14, 8)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = bits.RotateLeft32(x4, 7)
|
||||
}
|
||||
|
||||
x0 += api.Sigma0
|
||||
x1 += api.Sigma1
|
||||
x2 += api.Sigma2
|
||||
x3 += api.Sigma3
|
||||
x4 += x[4]
|
||||
x5 += x[5]
|
||||
x6 += x[6]
|
||||
x7 += x[7]
|
||||
x8 += x[8]
|
||||
x9 += x[9]
|
||||
x10 += x[10]
|
||||
x11 += x[11]
|
||||
x12 += x[12]
|
||||
x13 += x[13]
|
||||
x14 += x[14]
|
||||
x15 += x[15]
|
||||
|
||||
_ = dst[api.BlockSize-1] // Force bounds check elimination.
|
||||
|
||||
if src != nil {
|
||||
_ = src[api.BlockSize-1] // Force bounds check elimination.
|
||||
binary.LittleEndian.PutUint32(dst[0:4], binary.LittleEndian.Uint32(src[0:4])^x0)
|
||||
binary.LittleEndian.PutUint32(dst[4:8], binary.LittleEndian.Uint32(src[4:8])^x1)
|
||||
binary.LittleEndian.PutUint32(dst[8:12], binary.LittleEndian.Uint32(src[8:12])^x2)
|
||||
binary.LittleEndian.PutUint32(dst[12:16], binary.LittleEndian.Uint32(src[12:16])^x3)
|
||||
binary.LittleEndian.PutUint32(dst[16:20], binary.LittleEndian.Uint32(src[16:20])^x4)
|
||||
binary.LittleEndian.PutUint32(dst[20:24], binary.LittleEndian.Uint32(src[20:24])^x5)
|
||||
binary.LittleEndian.PutUint32(dst[24:28], binary.LittleEndian.Uint32(src[24:28])^x6)
|
||||
binary.LittleEndian.PutUint32(dst[28:32], binary.LittleEndian.Uint32(src[28:32])^x7)
|
||||
binary.LittleEndian.PutUint32(dst[32:36], binary.LittleEndian.Uint32(src[32:36])^x8)
|
||||
binary.LittleEndian.PutUint32(dst[36:40], binary.LittleEndian.Uint32(src[36:40])^x9)
|
||||
binary.LittleEndian.PutUint32(dst[40:44], binary.LittleEndian.Uint32(src[40:44])^x10)
|
||||
binary.LittleEndian.PutUint32(dst[44:48], binary.LittleEndian.Uint32(src[44:48])^x11)
|
||||
binary.LittleEndian.PutUint32(dst[48:52], binary.LittleEndian.Uint32(src[48:52])^x12)
|
||||
binary.LittleEndian.PutUint32(dst[52:56], binary.LittleEndian.Uint32(src[52:56])^x13)
|
||||
binary.LittleEndian.PutUint32(dst[56:60], binary.LittleEndian.Uint32(src[56:60])^x14)
|
||||
binary.LittleEndian.PutUint32(dst[60:64], binary.LittleEndian.Uint32(src[60:64])^x15)
|
||||
src = src[api.BlockSize:]
|
||||
} else {
|
||||
binary.LittleEndian.PutUint32(dst[0:4], x0)
|
||||
binary.LittleEndian.PutUint32(dst[4:8], x1)
|
||||
binary.LittleEndian.PutUint32(dst[8:12], x2)
|
||||
binary.LittleEndian.PutUint32(dst[12:16], x3)
|
||||
binary.LittleEndian.PutUint32(dst[16:20], x4)
|
||||
binary.LittleEndian.PutUint32(dst[20:24], x5)
|
||||
binary.LittleEndian.PutUint32(dst[24:28], x6)
|
||||
binary.LittleEndian.PutUint32(dst[28:32], x7)
|
||||
binary.LittleEndian.PutUint32(dst[32:36], x8)
|
||||
binary.LittleEndian.PutUint32(dst[36:40], x9)
|
||||
binary.LittleEndian.PutUint32(dst[40:44], x10)
|
||||
binary.LittleEndian.PutUint32(dst[44:48], x11)
|
||||
binary.LittleEndian.PutUint32(dst[48:52], x12)
|
||||
binary.LittleEndian.PutUint32(dst[52:56], x13)
|
||||
binary.LittleEndian.PutUint32(dst[56:60], x14)
|
||||
binary.LittleEndian.PutUint32(dst[60:64], x15)
|
||||
}
|
||||
dst = dst[api.BlockSize:]
|
||||
|
||||
// Stoping at 2^70 bytes per nonce is the user's responsibility.
|
||||
ctr := uint64(x[13])<<32 | uint64(x[12])
|
||||
ctr++
|
||||
x[12] = uint32(ctr)
|
||||
x[13] = uint32(ctr >> 32)
|
||||
}
|
||||
}
|
||||
|
||||
func (impl *implRef) HChaCha(key, nonce []byte, dst []byte) {
|
||||
// Force bounds check elimination.
|
||||
_ = key[31]
|
||||
_ = nonce[api.HNonceSize-1]
|
||||
|
||||
x0, x1, x2, x3 := api.Sigma0, api.Sigma1, api.Sigma2, api.Sigma3
|
||||
x4 := binary.LittleEndian.Uint32(key[0:4])
|
||||
x5 := binary.LittleEndian.Uint32(key[4:8])
|
||||
x6 := binary.LittleEndian.Uint32(key[8:12])
|
||||
x7 := binary.LittleEndian.Uint32(key[12:16])
|
||||
x8 := binary.LittleEndian.Uint32(key[16:20])
|
||||
x9 := binary.LittleEndian.Uint32(key[20:24])
|
||||
x10 := binary.LittleEndian.Uint32(key[24:28])
|
||||
x11 := binary.LittleEndian.Uint32(key[28:32])
|
||||
x12 := binary.LittleEndian.Uint32(nonce[0:4])
|
||||
x13 := binary.LittleEndian.Uint32(nonce[4:8])
|
||||
x14 := binary.LittleEndian.Uint32(nonce[8:12])
|
||||
x15 := binary.LittleEndian.Uint32(nonce[12:16])
|
||||
|
||||
// Yes, this could be carved out into a function for code reuse (TM)
|
||||
// however the go inliner won't inline it.
|
||||
for i := rounds; i > 0; i -= 2 {
|
||||
// quarterround(x, 0, 4, 8, 12)
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = bits.RotateLeft32(x12, 16)
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = bits.RotateLeft32(x4, 12)
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = bits.RotateLeft32(x12, 8)
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = bits.RotateLeft32(x4, 7)
|
||||
|
||||
// quarterround(x, 1, 5, 9, 13)
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = bits.RotateLeft32(x13, 16)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = bits.RotateLeft32(x5, 12)
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = bits.RotateLeft32(x13, 8)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = bits.RotateLeft32(x5, 7)
|
||||
|
||||
// quarterround(x, 2, 6, 10, 14)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = bits.RotateLeft32(x14, 16)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = bits.RotateLeft32(x6, 12)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = bits.RotateLeft32(x14, 8)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = bits.RotateLeft32(x6, 7)
|
||||
|
||||
// quarterround(x, 3, 7, 11, 15)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = bits.RotateLeft32(x15, 16)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = bits.RotateLeft32(x7, 12)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = bits.RotateLeft32(x15, 8)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = bits.RotateLeft32(x7, 7)
|
||||
|
||||
// quarterround(x, 0, 5, 10, 15)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = bits.RotateLeft32(x15, 16)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = bits.RotateLeft32(x5, 12)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = bits.RotateLeft32(x15, 8)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = bits.RotateLeft32(x5, 7)
|
||||
|
||||
// quarterround(x, 1, 6, 11, 12)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = bits.RotateLeft32(x12, 16)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = bits.RotateLeft32(x6, 12)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = bits.RotateLeft32(x12, 8)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = bits.RotateLeft32(x6, 7)
|
||||
|
||||
// quarterround(x, 2, 7, 8, 13)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = bits.RotateLeft32(x13, 16)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = bits.RotateLeft32(x7, 12)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = bits.RotateLeft32(x13, 8)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = bits.RotateLeft32(x7, 7)
|
||||
|
||||
// quarterround(x, 3, 4, 9, 14)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = bits.RotateLeft32(x14, 16)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = bits.RotateLeft32(x4, 12)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = bits.RotateLeft32(x14, 8)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = bits.RotateLeft32(x4, 7)
|
||||
}
|
||||
|
||||
// HChaCha returns x0...x3 | x12...x15, which corresponds to the
|
||||
// indexes of the ChaCha constant and the indexes of the IV.
|
||||
_ = dst[api.HashSize-1] // Force bounds check elimination.
|
||||
binary.LittleEndian.PutUint32(dst[0:4], x0)
|
||||
binary.LittleEndian.PutUint32(dst[4:8], x1)
|
||||
binary.LittleEndian.PutUint32(dst[8:12], x2)
|
||||
binary.LittleEndian.PutUint32(dst[12:16], x3)
|
||||
binary.LittleEndian.PutUint32(dst[16:20], x12)
|
||||
binary.LittleEndian.PutUint32(dst[20:24], x13)
|
||||
binary.LittleEndian.PutUint32(dst[24:28], x14)
|
||||
binary.LittleEndian.PutUint32(dst[28:32], x15)
|
||||
}
|
||||
|
||||
// Register appends the implementation to the provided slice, and returns the
|
||||
// new slice.
|
||||
func Register(impls []api.Implementation) []api.Implementation {
|
||||
return append(impls, Impl)
|
||||
}
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
[](https://godoc.org/blitter.com/go/cryptmt)
|
||||
|
||||
Implementation of cryptMTv1 stream cipher (but with mtwist64 as base accum)
|
||||
https://eprint.iacr.org/2005/165.pdf
|
||||
|
||||
Uses Mersenne Twister 64 golang implementation supplied by [cuixin](https://gist.github.com/cuixin): [gist](https://gist.github.com/cuixin/1b8b6bd7bfbde8fe76e8)
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
// Package CryptMT - implementation of cryptMTv1 stream cipher
|
||||
// (but with mtwist64 as base accum)
|
||||
// https://eprint.iacr.org/2005/165.pdf
|
||||
package cryptmt
|
||||
|
||||
// TODO rlm: according to go docs, stream ciphers do not implement the
|
||||
// cipher.Block interface at all (thus do not support Encrypt() or
|
||||
// Decrypt() .. cipher.StreamReader/StreamWriter() only call
|
||||
// XORKeyStream() anyhow and for my own purposes this is all that is
|
||||
// required.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
|
||||
mtwist "blitter.com/go/mtwist"
|
||||
)
|
||||
|
||||
type Cipher struct {
|
||||
r io.Reader
|
||||
w io.Writer
|
||||
accum uint64
|
||||
m *mtwist.MT19937_64
|
||||
}
|
||||
|
||||
func (c *Cipher) yield() (r byte) {
|
||||
c.accum = c.accum * (c.m.Int63() | 1)
|
||||
r = byte(c.accum>>56) & 0xFF
|
||||
return
|
||||
}
|
||||
|
||||
// New creates and returns a Cipher. The key argument should be the
|
||||
// CryptMT key, 64 bytes.
|
||||
func New(r io.Reader, w io.Writer, key []byte) (c *Cipher) {
|
||||
c = &Cipher{m: mtwist.New(), r: r, w: w}
|
||||
c.m.SeedFullState(key)
|
||||
c.accum = 1
|
||||
// from paper, discard first 64 bytes of output
|
||||
for idx := 0; idx < 64; idx++ {
|
||||
_ = c.yield()
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
func (c *Cipher) Read(p []byte) (n int, err error) {
|
||||
n, err = c.r.Read(p)
|
||||
if err == nil {
|
||||
for idx := 0; idx < n; idx++ {
|
||||
p[idx] = p[idx] ^ c.yield()
|
||||
}
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (c *Cipher) Write(p []byte) (n int, err error) {
|
||||
n, err = c.w.Write(p)
|
||||
return n, err
|
||||
}
|
||||
|
||||
// XORKeyStream XORs each byte in the given slice with a byte from the
|
||||
// cipher's key stream. Dst and src must overlap entirely or not at all.
|
||||
//
|
||||
// If len(dst) < len(src), XORKeyStream should panic. It is acceptable
|
||||
// to pass a dst bigger than src, and in that case, XORKeyStream will
|
||||
// only update dst[:len(src)] and will not touch the rest of dst.
|
||||
//
|
||||
// Multiple calls to XORKeyStream behave as if the concatenation of
|
||||
// the src buffers was passed in a single run. That is, Stream
|
||||
// maintains state and does not reset at each XORKeyStream call.
|
||||
func (c *Cipher) XORKeyStream(dst, src []byte) {
|
||||
if len(dst) < len(src) {
|
||||
panic(errors.New("len(dst) < len(src)"))
|
||||
}
|
||||
|
||||
for i, b := range src {
|
||||
dst[i] = b ^ c.yield()
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2017 - 2018 Russell Magee
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
goutmp - Minimal bindings to C stdlib pututmpx(), getutmpx() (/var/log/wtmp) and /var/log/lastlog
|
||||
|
||||
Any Go program which allows user shell access should update the standard UNIX files which track user sessions: /var/log/wtmp (for the 'w' and 'who' commands), and /var/log/lastlog (the 'last' and 'lastlog' commands).
|
||||
|
||||
```
|
||||
go doc
|
||||
package goutmp // import "blitter.com/go/goutmp"
|
||||
|
||||
Golang bindings for basic login/utmp accounting
|
||||
|
||||
type UtmpEntry struct{ ... }
|
||||
|
||||
func Put_lastlog_entry(app, usr, ptsname, host string)
|
||||
func Unput_utmp(entry UtmpEntry)
|
||||
func Put_utmp(user, ptsname, host string) UtmpEntry
|
||||
```
|
||||
|
||||
|
|
@ -0,0 +1,136 @@
|
|||
// +build freebsd
|
||||
|
||||
// Golang bindings for basic login/utmp accounting
|
||||
package goutmp
|
||||
|
||||
//#include <stdio.h>
|
||||
//#include <stdlib.h>
|
||||
//#include <sys/file.h>
|
||||
//#include <string.h>
|
||||
//#include <unistd.h>
|
||||
//#include <stdint.h>
|
||||
//#include <time.h>
|
||||
//#include <pwd.h>
|
||||
//
|
||||
//#include <utmpx.h>
|
||||
//
|
||||
//typedef char char_t;
|
||||
//
|
||||
//void pututmpx(struct utmpx* entry, char* uname, char* ptsname, char* host) {
|
||||
// entry->ut_type = USER_PROCESS;
|
||||
// entry->ut_pid = getpid();
|
||||
// strcpy(entry->ut_line, ptsname + strlen("/dev/"));
|
||||
//
|
||||
// strcpy(entry->ut_id, ptsname + strlen("/dev/pts/"));
|
||||
//
|
||||
// //entry->ut_time = time(NULL);
|
||||
// strcpy(entry->ut_user, uname);
|
||||
// strcpy(entry->ut_host, host);
|
||||
// //entry->ut_addr = 0;
|
||||
// setutxent();
|
||||
// pututxline(entry);
|
||||
//}
|
||||
//
|
||||
//void unpututmpx(struct utmpx* entry) {
|
||||
// entry->ut_type = DEAD_PROCESS;
|
||||
// entry->ut_line[0] = '\0';
|
||||
// //entry->ut_time = 0;
|
||||
// entry->ut_user[0] = '\0';
|
||||
// setutxent();
|
||||
// pututxline(entry);
|
||||
//
|
||||
// endutxent();
|
||||
//}
|
||||
//
|
||||
//#if 0
|
||||
//int putlastlogentry(int64_t t, int uid, char* line, char* host) {
|
||||
// int retval = 0;
|
||||
// FILE *f;
|
||||
// struct lastlog l;
|
||||
//
|
||||
// strncpy(l.ll_line, line, UT_LINESIZE);
|
||||
// l.ll_line[UT_LINESIZE-1] = '\0';
|
||||
// strncpy(l.ll_host, host, UT_HOSTSIZE);
|
||||
// l.ll_host[UT_HOSTSIZE-1] = '\0';
|
||||
//
|
||||
// l.ll_time = (time_t)t;
|
||||
// //printf("l: ll_line '%s', ll_host '%s', ll_time %d\n", l.ll_line, l.ll_host, l.ll_time);
|
||||
//
|
||||
// /* Write lastlog entry at fixed offset (uid * sizeof(struct lastlog) */
|
||||
// if( NULL != (f = fopen("/var/log/lastlog", "rw+")) ) {
|
||||
// if( !fseek(f, (uid * sizeof(struct lastlog)), SEEK_SET) ) {
|
||||
// int fd = fileno(f);
|
||||
// if( write(fd, &l, sizeof(l)) == sizeof(l) ) {
|
||||
// retval = 1;
|
||||
// //int32_t stat = system("echo ---- lastlog ----; lastlog");
|
||||
// }
|
||||
// }
|
||||
// fclose(f);
|
||||
// }
|
||||
// return retval;
|
||||
//}
|
||||
//#else
|
||||
//int putlastlogentry(int64_t t, int uid, char* line, char* host) {
|
||||
// return 0;
|
||||
//}
|
||||
//#endif
|
||||
import "C"
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
"os/user"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// UtmpEntry wraps the C struct utmp
|
||||
type UtmpEntry struct {
|
||||
entry C.struct_utmpx
|
||||
}
|
||||
|
||||
// return remote client hostname or IP if host lookup fails
|
||||
// addr is expected to be of the format given by net.Addr.String()
|
||||
// eg., "127.0.0.1:80" or "[::1]:80"
|
||||
func GetHost(addr string) (h string) {
|
||||
if !strings.Contains(addr, "[") {
|
||||
h = strings.Split(addr, ":")[0]
|
||||
} else {
|
||||
h = strings.Split(strings.Split(addr, "[")[1], "]")[0]
|
||||
}
|
||||
hList, e := net.LookupAddr(h)
|
||||
//fmt.Printf("lookupAddr:%v\n", hList)
|
||||
if e == nil {
|
||||
h = hList[0]
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Put a username and the originating host/IP to utmp
|
||||
func Put_utmp(user, ptsName, host string) UtmpEntry {
|
||||
var entry UtmpEntry
|
||||
|
||||
//log.Println("Put_utmp:host ", host, " user ", user)
|
||||
C.pututmpx(&entry.entry, C.CString(user), C.CString(ptsName), C.CString(host))
|
||||
return entry
|
||||
}
|
||||
|
||||
// Remove a username/host entry from utmp
|
||||
func Unput_utmp(entry UtmpEntry) {
|
||||
C.unpututmpx(&entry.entry)
|
||||
}
|
||||
|
||||
// Put the login app, username and originating host/IP to lastlog
|
||||
func Put_lastlog_entry(app, usr, ptsname, host string) {
|
||||
u, e := user.Lookup(usr)
|
||||
if e != nil {
|
||||
return
|
||||
}
|
||||
var uid uint32
|
||||
fmt.Sscanf(u.Uid, "%d", &uid)
|
||||
|
||||
t := time.Now().Unix()
|
||||
_ = C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
|
||||
//stat := C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
|
||||
//fmt.Println("stat was:",stat)
|
||||
}
|
||||
|
|
@ -0,0 +1,132 @@
|
|||
// +build linux
|
||||
|
||||
// Golang bindings for basic login/utmp accounting
|
||||
package goutmp
|
||||
|
||||
//#include <stdio.h>
|
||||
//#include <stdlib.h>
|
||||
//#include <sys/file.h>
|
||||
//#include <string.h>
|
||||
//#include <unistd.h>
|
||||
//#include <stdint.h>
|
||||
//#include <time.h>
|
||||
//#include <pwd.h>
|
||||
//
|
||||
//#include <utmp.h>
|
||||
//#include <lastlog.h>
|
||||
//
|
||||
//typedef char char_t;
|
||||
//
|
||||
//
|
||||
//void pututmp(struct utmp* entry, char* uname, char* ptsname, char* host) {
|
||||
// entry->ut_type = USER_PROCESS;
|
||||
// entry->ut_pid = getpid();
|
||||
// strcpy(entry->ut_line, ptsname + strlen("/dev/"));
|
||||
//
|
||||
// strcpy(entry->ut_id, ptsname + strlen("/dev/pts/"));
|
||||
//
|
||||
// entry->ut_time = time(NULL);
|
||||
// strcpy(entry->ut_user, uname);
|
||||
// strcpy(entry->ut_host, host);
|
||||
// entry->ut_addr = 0;
|
||||
// setutent();
|
||||
// pututline(entry);
|
||||
//}
|
||||
//
|
||||
//void unpututmp(struct utmp* entry) {
|
||||
// entry->ut_type = DEAD_PROCESS;
|
||||
// memset(entry->ut_line, 0, UT_LINESIZE);
|
||||
// entry->ut_time = 0;
|
||||
// memset(entry->ut_user, 0, UT_NAMESIZE);
|
||||
// setutent();
|
||||
// pututline(entry);
|
||||
//
|
||||
// endutent();
|
||||
//}
|
||||
//
|
||||
//int putlastlogentry(int64_t t, int uid, char* line, char* host) {
|
||||
// int retval = 0;
|
||||
// FILE *f;
|
||||
// struct lastlog l;
|
||||
//
|
||||
// strncpy(l.ll_line, line, UT_LINESIZE);
|
||||
// l.ll_line[UT_LINESIZE-1] = '\0';
|
||||
// strncpy(l.ll_host, host, UT_HOSTSIZE);
|
||||
// l.ll_host[UT_HOSTSIZE-1] = '\0';
|
||||
//
|
||||
// l.ll_time = (time_t)t;
|
||||
// //printf("l: ll_line '%s', ll_host '%s', ll_time %d\n", l.ll_line, l.ll_host, l.ll_time);
|
||||
//
|
||||
// /* Write lastlog entry at fixed offset (uid * sizeof(struct lastlog) */
|
||||
// if( NULL != (f = fopen("/var/log/lastlog", "rw+")) ) {
|
||||
// if( !fseek(f, (uid * sizeof(struct lastlog)), SEEK_SET) ) {
|
||||
// int fd = fileno(f);
|
||||
// if( write(fd, &l, sizeof(l)) == sizeof(l) ) {
|
||||
// retval = 1;
|
||||
// //int32_t stat = system("echo ---- lastlog ----; lastlog");
|
||||
// }
|
||||
// }
|
||||
// fclose(f);
|
||||
// }
|
||||
// return retval;
|
||||
//}
|
||||
import "C"
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
"os/user"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// UtmpEntry wraps the C struct utmp
|
||||
type UtmpEntry struct {
|
||||
entry C.struct_utmp
|
||||
}
|
||||
|
||||
// return remote client hostname or IP if host lookup fails
|
||||
// addr is expected to be of the format given by net.Addr.String()
|
||||
// eg., "127.0.0.1:80" or "[::1]:80"
|
||||
func GetHost(addr string) (h string) {
|
||||
if !strings.Contains(addr, "[") {
|
||||
h = strings.Split(addr, ":")[0]
|
||||
} else {
|
||||
h = strings.Split(strings.Split(addr, "[")[1], "]")[0]
|
||||
}
|
||||
hList, e := net.LookupAddr(h)
|
||||
//fmt.Printf("lookupAddr:%v\n", hList)
|
||||
if e == nil {
|
||||
h = hList[0]
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Put a username and the originating host/IP to utmp
|
||||
func Put_utmp(user, ptsName, host string) UtmpEntry {
|
||||
var entry UtmpEntry
|
||||
|
||||
//log.Println("Put_utmp:host ", host, " user ", user)
|
||||
C.pututmp(&entry.entry, C.CString(user), C.CString(ptsName), C.CString(host))
|
||||
return entry
|
||||
}
|
||||
|
||||
// Remove a username/host entry from utmp
|
||||
func Unput_utmp(entry UtmpEntry) {
|
||||
C.unpututmp(&entry.entry)
|
||||
}
|
||||
|
||||
// Put the login app, username and originating host/IP to lastlog
|
||||
func Put_lastlog_entry(app, usr, ptsname, host string) {
|
||||
u, e := user.Lookup(usr)
|
||||
if e != nil {
|
||||
return
|
||||
}
|
||||
var uid uint32
|
||||
fmt.Sscanf(u.Uid, "%d", &uid)
|
||||
|
||||
t := time.Now().Unix()
|
||||
_ = C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
|
||||
//stat := C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
|
||||
//fmt.Println("stat was:",stat)
|
||||
}
|
||||
|
|
@ -0,0 +1,674 @@
|
|||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The GNU General Public License is a free, copyleft license for
|
||||
software and other kinds of works.
|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
to take away your freedom to share and change the works. By contrast,
|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
share and change all versions of a program--to make sure it remains free
|
||||
software for all its users. We, the Free Software Foundation, use the
|
||||
GNU General Public License for most of our software; it applies also to
|
||||
any other work released this way by its authors. You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
them if you wish), that you receive source code or can get it if you
|
||||
want it, that you can change the software or use pieces of it in new
|
||||
free programs, and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to prevent others from denying you
|
||||
these rights or asking you to surrender the rights. Therefore, you have
|
||||
certain responsibilities if you distribute copies of the software, or if
|
||||
you modify it: responsibilities to respect the freedom of others.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must pass on to the recipients the same
|
||||
freedoms that you received. You must make sure that they, too, receive
|
||||
or can get the source code. And you must show them these terms so they
|
||||
know their rights.
|
||||
|
||||
Developers that use the GNU GPL protect your rights with two steps:
|
||||
(1) assert copyright on the software, and (2) offer you this License
|
||||
giving you legal permission to copy, distribute and/or modify it.
|
||||
|
||||
For the developers' and authors' protection, the GPL clearly explains
|
||||
that there is no warranty for this free software. For both users' and
|
||||
authors' sake, the GPL requires that modified versions be marked as
|
||||
changed, so that their problems will not be attributed erroneously to
|
||||
authors of previous versions.
|
||||
|
||||
Some devices are designed to deny users access to install or run
|
||||
modified versions of the software inside them, although the manufacturer
|
||||
can do so. This is fundamentally incompatible with the aim of
|
||||
protecting users' freedom to change the software. The systematic
|
||||
pattern of such abuse occurs in the area of products for individuals to
|
||||
use, which is precisely where it is most unacceptable. Therefore, we
|
||||
have designed this version of the GPL to prohibit the practice for those
|
||||
products. If such problems arise substantially in other domains, we
|
||||
stand ready to extend this provision to those domains in future versions
|
||||
of the GPL, as needed to protect the freedom of users.
|
||||
|
||||
Finally, every program is threatened constantly by software patents.
|
||||
States should not allow patents to restrict development and use of
|
||||
software on general-purpose computers, but in those that do, we wish to
|
||||
avoid the special danger that patents applied to a free program could
|
||||
make it effectively proprietary. To prevent this, the GPL assures that
|
||||
patents cannot be used to render the program non-free.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
TERMS AND CONDITIONS
|
||||
|
||||
0. Definitions.
|
||||
|
||||
"This License" refers to version 3 of the GNU General Public License.
|
||||
|
||||
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||
works, such as semiconductor masks.
|
||||
|
||||
"The Program" refers to any copyrightable work licensed under this
|
||||
License. Each licensee is addressed as "you". "Licensees" and
|
||||
"recipients" may be individuals or organizations.
|
||||
|
||||
To "modify" a work means to copy from or adapt all or part of the work
|
||||
in a fashion requiring copyright permission, other than the making of an
|
||||
exact copy. The resulting work is called a "modified version" of the
|
||||
earlier work or a work "based on" the earlier work.
|
||||
|
||||
A "covered work" means either the unmodified Program or a work based
|
||||
on the Program.
|
||||
|
||||
To "propagate" a work means to do anything with it that, without
|
||||
permission, would make you directly or secondarily liable for
|
||||
infringement under applicable copyright law, except executing it on a
|
||||
computer or modifying a private copy. Propagation includes copying,
|
||||
distribution (with or without modification), making available to the
|
||||
public, and in some countries other activities as well.
|
||||
|
||||
To "convey" a work means any kind of propagation that enables other
|
||||
parties to make or receive copies. Mere interaction with a user through
|
||||
a computer network, with no transfer of a copy, is not conveying.
|
||||
|
||||
An interactive user interface displays "Appropriate Legal Notices"
|
||||
to the extent that it includes a convenient and prominently visible
|
||||
feature that (1) displays an appropriate copyright notice, and (2)
|
||||
tells the user that there is no warranty for the work (except to the
|
||||
extent that warranties are provided), that licensees may convey the
|
||||
work under this License, and how to view a copy of this License. If
|
||||
the interface presents a list of user commands or options, such as a
|
||||
menu, a prominent item in the list meets this criterion.
|
||||
|
||||
1. Source Code.
|
||||
|
||||
The "source code" for a work means the preferred form of the work
|
||||
for making modifications to it. "Object code" means any non-source
|
||||
form of a work.
|
||||
|
||||
A "Standard Interface" means an interface that either is an official
|
||||
standard defined by a recognized standards body, or, in the case of
|
||||
interfaces specified for a particular programming language, one that
|
||||
is widely used among developers working in that language.
|
||||
|
||||
The "System Libraries" of an executable work include anything, other
|
||||
than the work as a whole, that (a) is included in the normal form of
|
||||
packaging a Major Component, but which is not part of that Major
|
||||
Component, and (b) serves only to enable use of the work with that
|
||||
Major Component, or to implement a Standard Interface for which an
|
||||
implementation is available to the public in source code form. A
|
||||
"Major Component", in this context, means a major essential component
|
||||
(kernel, window system, and so on) of the specific operating system
|
||||
(if any) on which the executable work runs, or a compiler used to
|
||||
produce the work, or an object code interpreter used to run it.
|
||||
|
||||
The "Corresponding Source" for a work in object code form means all
|
||||
the source code needed to generate, install, and (for an executable
|
||||
work) run the object code and to modify the work, including scripts to
|
||||
control those activities. However, it does not include the work's
|
||||
System Libraries, or general-purpose tools or generally available free
|
||||
programs which are used unmodified in performing those activities but
|
||||
which are not part of the work. For example, Corresponding Source
|
||||
includes interface definition files associated with source files for
|
||||
the work, and the source code for shared libraries and dynamically
|
||||
linked subprograms that the work is specifically designed to require,
|
||||
such as by intimate data communication or control flow between those
|
||||
subprograms and other parts of the work.
|
||||
|
||||
The Corresponding Source need not include anything that users
|
||||
can regenerate automatically from other parts of the Corresponding
|
||||
Source.
|
||||
|
||||
The Corresponding Source for a work in source code form is that
|
||||
same work.
|
||||
|
||||
2. Basic Permissions.
|
||||
|
||||
All rights granted under this License are granted for the term of
|
||||
copyright on the Program, and are irrevocable provided the stated
|
||||
conditions are met. This License explicitly affirms your unlimited
|
||||
permission to run the unmodified Program. The output from running a
|
||||
covered work is covered by this License only if the output, given its
|
||||
content, constitutes a covered work. This License acknowledges your
|
||||
rights of fair use or other equivalent, as provided by copyright law.
|
||||
|
||||
You may make, run and propagate covered works that you do not
|
||||
convey, without conditions so long as your license otherwise remains
|
||||
in force. You may convey covered works to others for the sole purpose
|
||||
of having them make modifications exclusively for you, or provide you
|
||||
with facilities for running those works, provided that you comply with
|
||||
the terms of this License in conveying all material for which you do
|
||||
not control copyright. Those thus making or running the covered works
|
||||
for you must do so exclusively on your behalf, under your direction
|
||||
and control, on terms that prohibit them from making any copies of
|
||||
your copyrighted material outside their relationship with you.
|
||||
|
||||
Conveying under any other circumstances is permitted solely under
|
||||
the conditions stated below. Sublicensing is not allowed; section 10
|
||||
makes it unnecessary.
|
||||
|
||||
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||
|
||||
No covered work shall be deemed part of an effective technological
|
||||
measure under any applicable law fulfilling obligations under article
|
||||
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||
similar laws prohibiting or restricting circumvention of such
|
||||
measures.
|
||||
|
||||
When you convey a covered work, you waive any legal power to forbid
|
||||
circumvention of technological measures to the extent such circumvention
|
||||
is effected by exercising rights under this License with respect to
|
||||
the covered work, and you disclaim any intention to limit operation or
|
||||
modification of the work as a means of enforcing, against the work's
|
||||
users, your or third parties' legal rights to forbid circumvention of
|
||||
technological measures.
|
||||
|
||||
4. Conveying Verbatim Copies.
|
||||
|
||||
You may convey verbatim copies of the Program's source code as you
|
||||
receive it, in any medium, provided that you conspicuously and
|
||||
appropriately publish on each copy an appropriate copyright notice;
|
||||
keep intact all notices stating that this License and any
|
||||
non-permissive terms added in accord with section 7 apply to the code;
|
||||
keep intact all notices of the absence of any warranty; and give all
|
||||
recipients a copy of this License along with the Program.
|
||||
|
||||
You may charge any price or no price for each copy that you convey,
|
||||
and you may offer support or warranty protection for a fee.
|
||||
|
||||
5. Conveying Modified Source Versions.
|
||||
|
||||
You may convey a work based on the Program, or the modifications to
|
||||
produce it from the Program, in the form of source code under the
|
||||
terms of section 4, provided that you also meet all of these conditions:
|
||||
|
||||
a) The work must carry prominent notices stating that you modified
|
||||
it, and giving a relevant date.
|
||||
|
||||
b) The work must carry prominent notices stating that it is
|
||||
released under this License and any conditions added under section
|
||||
7. This requirement modifies the requirement in section 4 to
|
||||
"keep intact all notices".
|
||||
|
||||
c) You must license the entire work, as a whole, under this
|
||||
License to anyone who comes into possession of a copy. This
|
||||
License will therefore apply, along with any applicable section 7
|
||||
additional terms, to the whole of the work, and all its parts,
|
||||
regardless of how they are packaged. This License gives no
|
||||
permission to license the work in any other way, but it does not
|
||||
invalidate such permission if you have separately received it.
|
||||
|
||||
d) If the work has interactive user interfaces, each must display
|
||||
Appropriate Legal Notices; however, if the Program has interactive
|
||||
interfaces that do not display Appropriate Legal Notices, your
|
||||
work need not make them do so.
|
||||
|
||||
A compilation of a covered work with other separate and independent
|
||||
works, which are not by their nature extensions of the covered work,
|
||||
and which are not combined with it such as to form a larger program,
|
||||
in or on a volume of a storage or distribution medium, is called an
|
||||
"aggregate" if the compilation and its resulting copyright are not
|
||||
used to limit the access or legal rights of the compilation's users
|
||||
beyond what the individual works permit. Inclusion of a covered work
|
||||
in an aggregate does not cause this License to apply to the other
|
||||
parts of the aggregate.
|
||||
|
||||
6. Conveying Non-Source Forms.
|
||||
|
||||
You may convey a covered work in object code form under the terms
|
||||
of sections 4 and 5, provided that you also convey the
|
||||
machine-readable Corresponding Source under the terms of this License,
|
||||
in one of these ways:
|
||||
|
||||
a) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by the
|
||||
Corresponding Source fixed on a durable physical medium
|
||||
customarily used for software interchange.
|
||||
|
||||
b) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by a
|
||||
written offer, valid for at least three years and valid for as
|
||||
long as you offer spare parts or customer support for that product
|
||||
model, to give anyone who possesses the object code either (1) a
|
||||
copy of the Corresponding Source for all the software in the
|
||||
product that is covered by this License, on a durable physical
|
||||
medium customarily used for software interchange, for a price no
|
||||
more than your reasonable cost of physically performing this
|
||||
conveying of source, or (2) access to copy the
|
||||
Corresponding Source from a network server at no charge.
|
||||
|
||||
c) Convey individual copies of the object code with a copy of the
|
||||
written offer to provide the Corresponding Source. This
|
||||
alternative is allowed only occasionally and noncommercially, and
|
||||
only if you received the object code with such an offer, in accord
|
||||
with subsection 6b.
|
||||
|
||||
d) Convey the object code by offering access from a designated
|
||||
place (gratis or for a charge), and offer equivalent access to the
|
||||
Corresponding Source in the same way through the same place at no
|
||||
further charge. You need not require recipients to copy the
|
||||
Corresponding Source along with the object code. If the place to
|
||||
copy the object code is a network server, the Corresponding Source
|
||||
may be on a different server (operated by you or a third party)
|
||||
that supports equivalent copying facilities, provided you maintain
|
||||
clear directions next to the object code saying where to find the
|
||||
Corresponding Source. Regardless of what server hosts the
|
||||
Corresponding Source, you remain obligated to ensure that it is
|
||||
available for as long as needed to satisfy these requirements.
|
||||
|
||||
e) Convey the object code using peer-to-peer transmission, provided
|
||||
you inform other peers where the object code and Corresponding
|
||||
Source of the work are being offered to the general public at no
|
||||
charge under subsection 6d.
|
||||
|
||||
A separable portion of the object code, whose source code is excluded
|
||||
from the Corresponding Source as a System Library, need not be
|
||||
included in conveying the object code work.
|
||||
|
||||
A "User Product" is either (1) a "consumer product", which means any
|
||||
tangible personal property which is normally used for personal, family,
|
||||
or household purposes, or (2) anything designed or sold for incorporation
|
||||
into a dwelling. In determining whether a product is a consumer product,
|
||||
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||
product received by a particular user, "normally used" refers to a
|
||||
typical or common use of that class of product, regardless of the status
|
||||
of the particular user or of the way in which the particular user
|
||||
actually uses, or expects or is expected to use, the product. A product
|
||||
is a consumer product regardless of whether the product has substantial
|
||||
commercial, industrial or non-consumer uses, unless such uses represent
|
||||
the only significant mode of use of the product.
|
||||
|
||||
"Installation Information" for a User Product means any methods,
|
||||
procedures, authorization keys, or other information required to install
|
||||
and execute modified versions of a covered work in that User Product from
|
||||
a modified version of its Corresponding Source. The information must
|
||||
suffice to ensure that the continued functioning of the modified object
|
||||
code is in no case prevented or interfered with solely because
|
||||
modification has been made.
|
||||
|
||||
If you convey an object code work under this section in, or with, or
|
||||
specifically for use in, a User Product, and the conveying occurs as
|
||||
part of a transaction in which the right of possession and use of the
|
||||
User Product is transferred to the recipient in perpetuity or for a
|
||||
fixed term (regardless of how the transaction is characterized), the
|
||||
Corresponding Source conveyed under this section must be accompanied
|
||||
by the Installation Information. But this requirement does not apply
|
||||
if neither you nor any third party retains the ability to install
|
||||
modified object code on the User Product (for example, the work has
|
||||
been installed in ROM).
|
||||
|
||||
The requirement to provide Installation Information does not include a
|
||||
requirement to continue to provide support service, warranty, or updates
|
||||
for a work that has been modified or installed by the recipient, or for
|
||||
the User Product in which it has been modified or installed. Access to a
|
||||
network may be denied when the modification itself materially and
|
||||
adversely affects the operation of the network or violates the rules and
|
||||
protocols for communication across the network.
|
||||
|
||||
Corresponding Source conveyed, and Installation Information provided,
|
||||
in accord with this section must be in a format that is publicly
|
||||
documented (and with an implementation available to the public in
|
||||
source code form), and must require no special password or key for
|
||||
unpacking, reading or copying.
|
||||
|
||||
7. Additional Terms.
|
||||
|
||||
"Additional permissions" are terms that supplement the terms of this
|
||||
License by making exceptions from one or more of its conditions.
|
||||
Additional permissions that are applicable to the entire Program shall
|
||||
be treated as though they were included in this License, to the extent
|
||||
that they are valid under applicable law. If additional permissions
|
||||
apply only to part of the Program, that part may be used separately
|
||||
under those permissions, but the entire Program remains governed by
|
||||
this License without regard to the additional permissions.
|
||||
|
||||
When you convey a copy of a covered work, you may at your option
|
||||
remove any additional permissions from that copy, or from any part of
|
||||
it. (Additional permissions may be written to require their own
|
||||
removal in certain cases when you modify the work.) You may place
|
||||
additional permissions on material, added by you to a covered work,
|
||||
for which you have or can give appropriate copyright permission.
|
||||
|
||||
Notwithstanding any other provision of this License, for material you
|
||||
add to a covered work, you may (if authorized by the copyright holders of
|
||||
that material) supplement the terms of this License with terms:
|
||||
|
||||
a) Disclaiming warranty or limiting liability differently from the
|
||||
terms of sections 15 and 16 of this License; or
|
||||
|
||||
b) Requiring preservation of specified reasonable legal notices or
|
||||
author attributions in that material or in the Appropriate Legal
|
||||
Notices displayed by works containing it; or
|
||||
|
||||
c) Prohibiting misrepresentation of the origin of that material, or
|
||||
requiring that modified versions of such material be marked in
|
||||
reasonable ways as different from the original version; or
|
||||
|
||||
d) Limiting the use for publicity purposes of names of licensors or
|
||||
authors of the material; or
|
||||
|
||||
e) Declining to grant rights under trademark law for use of some
|
||||
trade names, trademarks, or service marks; or
|
||||
|
||||
f) Requiring indemnification of licensors and authors of that
|
||||
material by anyone who conveys the material (or modified versions of
|
||||
it) with contractual assumptions of liability to the recipient, for
|
||||
any liability that these contractual assumptions directly impose on
|
||||
those licensors and authors.
|
||||
|
||||
All other non-permissive additional terms are considered "further
|
||||
restrictions" within the meaning of section 10. If the Program as you
|
||||
received it, or any part of it, contains a notice stating that it is
|
||||
governed by this License along with a term that is a further
|
||||
restriction, you may remove that term. If a license document contains
|
||||
a further restriction but permits relicensing or conveying under this
|
||||
License, you may add to a covered work material governed by the terms
|
||||
of that license document, provided that the further restriction does
|
||||
not survive such relicensing or conveying.
|
||||
|
||||
If you add terms to a covered work in accord with this section, you
|
||||
must place, in the relevant source files, a statement of the
|
||||
additional terms that apply to those files, or a notice indicating
|
||||
where to find the applicable terms.
|
||||
|
||||
Additional terms, permissive or non-permissive, may be stated in the
|
||||
form of a separately written license, or stated as exceptions;
|
||||
the above requirements apply either way.
|
||||
|
||||
8. Termination.
|
||||
|
||||
You may not propagate or modify a covered work except as expressly
|
||||
provided under this License. Any attempt otherwise to propagate or
|
||||
modify it is void, and will automatically terminate your rights under
|
||||
this License (including any patent licenses granted under the third
|
||||
paragraph of section 11).
|
||||
|
||||
However, if you cease all violation of this License, then your
|
||||
license from a particular copyright holder is reinstated (a)
|
||||
provisionally, unless and until the copyright holder explicitly and
|
||||
finally terminates your license, and (b) permanently, if the copyright
|
||||
holder fails to notify you of the violation by some reasonable means
|
||||
prior to 60 days after the cessation.
|
||||
|
||||
Moreover, your license from a particular copyright holder is
|
||||
reinstated permanently if the copyright holder notifies you of the
|
||||
violation by some reasonable means, this is the first time you have
|
||||
received notice of violation of this License (for any work) from that
|
||||
copyright holder, and you cure the violation prior to 30 days after
|
||||
your receipt of the notice.
|
||||
|
||||
Termination of your rights under this section does not terminate the
|
||||
licenses of parties who have received copies or rights from you under
|
||||
this License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
|
||||
You are not required to accept this License in order to receive or
|
||||
run a copy of the Program. Ancillary propagation of a covered work
|
||||
occurring solely as a consequence of using peer-to-peer transmission
|
||||
to receive a copy likewise does not require acceptance. However,
|
||||
nothing other than this License grants you permission to propagate or
|
||||
modify any covered work. These actions infringe copyright if you do
|
||||
not accept this License. Therefore, by modifying or propagating a
|
||||
covered work, you indicate your acceptance of this License to do so.
|
||||
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
|
||||
Each time you convey a covered work, the recipient automatically
|
||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program does terminal interaction, make it output a short
|
||||
notice like this when it starts in an interactive mode:
|
||||
|
||||
<program> Copyright (C) <year> <name of author>
|
||||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, your program's commands
|
||||
might be different; for a GUI interface, you would use an "about box".
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU GPL, see
|
||||
<http://www.gnu.org/licenses/>.
|
||||
|
||||
The GNU General Public License does not permit incorporating your program
|
||||
into proprietary programs. If your program is a subroutine library, you
|
||||
may consider it more useful to permit linking proprietary applications with
|
||||
the library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License. But first, please read
|
||||
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2017 - 2018 Omar Alejandro Herrera Reyna (core HerraduraKEx)
|
||||
Copyright (c) 2017 - 2018 Russell Magee (hkexsh/hkexshd/hkexpasswd)
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
.PHONY: info clean all lib
|
||||
|
||||
all: lib
|
||||
|
||||
clean:
|
||||
go clean .
|
||||
|
||||
lib: info
|
||||
go install .
|
||||
|
||||
ifneq ($(MSYSTEM),)
|
||||
info:
|
||||
@echo "building for Windows (MSYS)"
|
||||
else
|
||||
info:
|
||||
@echo "building for Linux"
|
||||
endif
|
||||
|
|
@ -0,0 +1 @@
|
|||
HerraduraKEx - an experimental Key Encapsulation Mechanism
|
||||
|
|
@ -0,0 +1,182 @@
|
|||
// Package hkex - an experimental key exchange algorithm
|
||||
// by Omar Alejandro Herrera Reyna.
|
||||
//
|
||||
// (https://github.com/Caume/HerraduraKEx)
|
||||
//
|
||||
// The core HerraduraKEx algorithm is dual-licensed
|
||||
// by the author (Omar Alejandro Herrera Reyna)
|
||||
// under GPL3 and MIT licenses.
|
||||
// See LICENSE.gpl and LICENSE.mit in this distribution
|
||||
//
|
||||
// Go implementation Copyright (c) 2017-2018 Russell Magee
|
||||
// (rmagee_at_gmail_com)
|
||||
// Licensed under the terms of the MIT license
|
||||
// See LICENSE.mit in this distribution
|
||||
package hkex
|
||||
|
||||
/* Herradura - a Key exchange scheme in the style of Diffie-Hellman Key Exchange.
|
||||
Copyright (C) 2017 Omar Alejandro Herrera Reyna
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
golang implementation by Russ Magee (rmagee_at_gmail.com) */
|
||||
|
||||
/* This is the core KEx algorithm. For client/server net support code,
|
||||
See the hkexnet package (currently a sub-package of hkexsh) for a
|
||||
golang/pkg/net compatible Conn interface using this to negotiate keys and
|
||||
secure a network channel. */
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math/big"
|
||||
"math/rand"
|
||||
"time"
|
||||
)
|
||||
|
||||
// HerraduraKEx holds the session state for a key exchange.
|
||||
type HerraduraKEx struct {
|
||||
intSz, pubSz int
|
||||
randctx *rand.Rand
|
||||
a *big.Int
|
||||
b *big.Int
|
||||
d, peerD *big.Int
|
||||
fa *big.Int
|
||||
}
|
||||
|
||||
// New returns a HerraduraKEx struct.
|
||||
//
|
||||
// i - internal (private) random nonce
|
||||
// p - public (exchanged) random nonce (typically 1/4 bitsize of i)
|
||||
//
|
||||
// If i or p are passed as zero, they will default to 256 and 64,
|
||||
// respectively.
|
||||
func New(i int, p int) (h *HerraduraKEx) {
|
||||
h = new(HerraduraKEx)
|
||||
|
||||
if i == 0 {
|
||||
i = 256
|
||||
}
|
||||
if p == 0 {
|
||||
p = 64
|
||||
}
|
||||
|
||||
h.intSz = i
|
||||
h.pubSz = p
|
||||
|
||||
h.seed()
|
||||
h.a = h.rand()
|
||||
h.b = h.rand()
|
||||
|
||||
h.d = h.fscxRevolve(h.a, h.b, h.pubSz)
|
||||
return h
|
||||
}
|
||||
|
||||
func (h *HerraduraKEx) seed() {
|
||||
r := rand.New(rand.NewSource(time.Now().UnixNano()))
|
||||
h.randctx = r
|
||||
}
|
||||
|
||||
func (h *HerraduraKEx) rand() (v *big.Int) {
|
||||
v = big.NewInt(0)
|
||||
v.Rand(h.randctx, h.getMax())
|
||||
return v
|
||||
}
|
||||
|
||||
// getMax returns the max value for an n-bit big.Int
|
||||
func (h *HerraduraKEx) getMax() (n *big.Int) {
|
||||
n = big.NewInt(0)
|
||||
var max big.Int
|
||||
|
||||
for i := 0; i < h.intSz; i++ {
|
||||
max.SetBit(n, i, 1)
|
||||
}
|
||||
n = &max
|
||||
return n
|
||||
}
|
||||
|
||||
func (h *HerraduraKEx) bitX(x *big.Int, pos int) (ret int64) {
|
||||
if pos < 0 {
|
||||
pos = h.intSz - pos
|
||||
}
|
||||
|
||||
if pos == 0 {
|
||||
ret = int64(x.Bit(1) ^ x.Bit(0) ^ x.Bit(h.intSz-1))
|
||||
} else if pos == h.intSz-1 {
|
||||
ret = int64(x.Bit(0) ^ x.Bit(pos) ^ x.Bit(pos-1))
|
||||
} else {
|
||||
ret = int64(x.Bit((pos+1)%h.intSz) ^ x.Bit(pos) ^ x.Bit(pos-1))
|
||||
}
|
||||
return ret
|
||||
}
|
||||
|
||||
func (h *HerraduraKEx) bit(up, down *big.Int, posU, posD int) (ret *big.Int) {
|
||||
return big.NewInt(h.bitX(up, posU) ^ h.bitX(down, posD))
|
||||
}
|
||||
|
||||
func (h *HerraduraKEx) fscx(up, down *big.Int) (result *big.Int) {
|
||||
result = big.NewInt(0)
|
||||
|
||||
for count := 0; count < h.intSz; count++ {
|
||||
result.Lsh(result, 1)
|
||||
result.Add(result, h.bit(up, down, count, count))
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// This is the iteration function using the result of the previous iteration
|
||||
// as the first parameter and the second parameter of the first iteration.
|
||||
func (h *HerraduraKEx) fscxRevolve(x, y *big.Int, passes int) (result *big.Int) {
|
||||
result = x
|
||||
for count := 0; count < passes; count++ {
|
||||
result = h.fscx(result, y)
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// D returns the D (FSCX Revolved) value, input to generate FA
|
||||
// (the value for peer KEx)
|
||||
func (h HerraduraKEx) D() *big.Int {
|
||||
return h.d
|
||||
}
|
||||
|
||||
// PeerD returns the peer D value
|
||||
func (h HerraduraKEx) PeerD() *big.Int {
|
||||
return h.peerD
|
||||
}
|
||||
|
||||
// SetPeerD stores the received peer's D value (contents, not ptr)
|
||||
func (h *HerraduraKEx) SetPeerD(pd *big.Int) {
|
||||
h.peerD = new(big.Int).Set(pd)
|
||||
}
|
||||
|
||||
// ComputeFA computes the FA value, which must be sent to peer for KEx.
|
||||
func (h *HerraduraKEx) ComputeFA() {
|
||||
h.fa = h.fscxRevolve(h.peerD, h.b, h.intSz-h.pubSz)
|
||||
h.fa.Xor(h.fa, h.a)
|
||||
}
|
||||
|
||||
// FA returns the computed FA value
|
||||
func (h HerraduraKEx) FA() *big.Int {
|
||||
return h.fa
|
||||
}
|
||||
|
||||
// Output HerraduraKEx type value as a string. Implements Stringer interface.
|
||||
func (h *HerraduraKEx) String() string {
|
||||
return fmt.Sprintf("s:%d p:%d\na:%s\nb:%s\nd:->%s\n<-peerD:%s\nfa:%s",
|
||||
h.intSz, h.pubSz,
|
||||
h.a.Text(16), h.b.Text(16),
|
||||
h.d.Text(16),
|
||||
h.peerD.Text(16),
|
||||
h.fa.Text(16))
|
||||
}
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
# hopscotch
|
||||
|
||||
Experimental cipher using multiple hash algs for keystream.
|
||||
|
||||
The cipher uses multiple trusted hash algorithms, each updated on a schedule (the security factor, 1 to 10) based initially on the secret key, then on random data from a PRNG (currently MTWIST-64, also seeded from the secret key). The XOR value used to encrypt plaintext is picked from bytes of the hash outputs (being appended together into a single pool P), the hash output byte chosen used then as a modulus value to 'hop' to the next XOR value within P (hence the name 'hopscotch').
|
||||
|
||||
The security of the algorithm is premised on the following axioms:
|
||||
|
||||
1. all hash algorithms used are sufficiently unpredictable in their output based on given input (most importantly the initial key as input to the PRNG and its seeded output);
|
||||
2. the PRNG is sufficiently random so as to guarantee subsequent input to all hash algorithms used as potential keystream pool bytes for XOR operations is not predictable;
|
||||
3. the keystream (being the hash outputs at a given time for all hash algorithms used) is re-keyed often enough to prevent excessive re-use of bytes ('excessive' being defined by the strength parameter, restricted from 1 to 10 inclusive by empirical analysis)
|
||||
|
||||
Current implementation uses 2 hash algorithms, SHA512 and BLAKE2B, both giving outputs of fixed-length = 64 bytes. Empirically, using security factors ranging from 1 to 10 (count of input bytes encrypted before re-keying by feeding 32 bytes of PRNG data to derive new hash output XOR pool P) it is unlikely that 64 picks from the pool would re-use the same bytes often enough to compromise security. Tests with the ['circle' analysis tool](https://github.com/circulosmeos/circle) and the 'Tux.ppm' image test indicate ciphertext does not resemble plaintext in any obvious manner. (TODO: diehard tests or others?)
|
||||
|
||||
The use purely of a PRNG plus two or more already-proven hash algorithms as keystream pool material offers a simply-verified security-primitive basis for confidence, plus easy extendability by adding more hash algorithms to the keystream pool P, without complexity of a full re-analysis. So long as each individual hash algorithm is considered safe, hopping between and within the output bytes of each to derive keystream XOR material should also be safe so long as hash output bytes are not re-used extensively.
|
||||
|
||||
|
||||
Throughput
|
||||
--
|
||||
On a modest test AMD (Linux amd_x64) encryption rates of approx. 140Mbits/s are achieved (-m 4). As this is a pure Go implementation and little effort has been put into optimization it is reasonable to expect higher rates could be achieved in the future.
|
||||
|
||||
```
|
||||
$ time ./cmd -k "SuperSecret#@11ElevenTy" <blank700MB.bin >blank700MBenc.bin
|
||||
|
||||
real 0m40.096s
|
||||
user 0m38.318s
|
||||
sys 0m2.133s
|
||||
|
||||
```
|
||||
|
|
@ -0,0 +1,166 @@
|
|||
// Package hopscotch - a crypto doodle that uses multiple hash
|
||||
// algorithm outputs as dynamic sbox/pbox material
|
||||
//
|
||||
// Properties visualized using https://github.com/circulosmeos/circle
|
||||
package hopscotch
|
||||
|
||||
// TODOs:
|
||||
// -define s-box rotation/shuffle schema
|
||||
// -devise p-box schema
|
||||
// ...
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
"time"
|
||||
|
||||
mtwist "blitter.com/go/mtwist" // Used to derive hash fodder after seeding w/key
|
||||
|
||||
// hash algos must be manually imported thusly:
|
||||
// (Would be nice if the golang pkg docs were more clear
|
||||
// on this...)
|
||||
"crypto/sha512"
|
||||
_ "crypto/sha512"
|
||||
|
||||
b2b "golang.org/x/crypto/blake2b"
|
||||
)
|
||||
|
||||
const (
|
||||
maxResched = 10 // above 20 starts to show outlines in 'tuxtest' ... so 10 max
|
||||
)
|
||||
|
||||
type Cipher struct {
|
||||
resched int // lower (1) == stronger encryption; weakest (10) == weakest
|
||||
rounds int
|
||||
prng *mtwist.MT19937_64 // used to gen initial hash fodder from key
|
||||
h []hash.Hash
|
||||
hs []byte
|
||||
r io.Reader
|
||||
w io.Writer
|
||||
idx int
|
||||
ctr int
|
||||
rekeyCtr int // must be min of len( c.h[] )
|
||||
bTmp byte
|
||||
k []byte
|
||||
}
|
||||
|
||||
func New(r io.Reader, w io.Writer, resched int, key []byte) (c *Cipher) {
|
||||
if resched < 1 || resched > maxResched {
|
||||
resched = 4
|
||||
}
|
||||
|
||||
c = &Cipher{}
|
||||
c.resched = resched
|
||||
c.rounds = 1
|
||||
c.prng = mtwist.New()
|
||||
c.r = r
|
||||
c.w = w
|
||||
|
||||
if len(key) == 0 {
|
||||
c.k = []byte(fmt.Sprintf("%s", time.Now()))
|
||||
} else {
|
||||
c.k = key
|
||||
}
|
||||
c.prng.SeedFullState(c.k)
|
||||
|
||||
// Discard first 64 bytes of MT output
|
||||
for idx := 0; idx < 64; idx++ {
|
||||
_ = c.prng.Int63()
|
||||
}
|
||||
|
||||
// Init all the hash algs we're going to 'hop' around with initial keystream
|
||||
c.h = make([]hash.Hash, 2)
|
||||
c.h[0] = sha512.New()
|
||||
c.h[1], _ = b2b.New512(c.k)
|
||||
c.keyUpdate(c.k)
|
||||
|
||||
c.rekeyCtr = len(c.hs) * c.resched // lower multiplier == greater security, lower speed
|
||||
//fmt.Fprintf(os.Stderr, "rekeyCtr = %v\n", c.rekeyCtr)
|
||||
return c
|
||||
}
|
||||
|
||||
func (c *Cipher) Read(p []byte) (n int, err error) {
|
||||
n, err = c.r.Read(p)
|
||||
if err == nil {
|
||||
for idx := 0; idx < n; idx++ {
|
||||
p[idx] = c.yield(p[idx])
|
||||
}
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (c *Cipher) Write(p []byte) (n int, err error) {
|
||||
n, err = c.w.Write(p)
|
||||
return n, err
|
||||
}
|
||||
|
||||
// Mutate the session key (intended to be called as encryption proceeds)
|
||||
func (c *Cipher) keyUpdate(data []byte) {
|
||||
//fmt.Fprintln(os.Stderr, "--rekey--")
|
||||
{
|
||||
c.h[0].Write(data)
|
||||
sliceTmp := sha512.Sum512(data)
|
||||
c.hs = sliceTmp[:]
|
||||
}
|
||||
{
|
||||
c.h[1].Write(data)
|
||||
sliceTmp := b2b.Sum512(data)
|
||||
c.hs = append(c.hs, sliceTmp[:]...)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Cipher) yield(ib byte) (ob byte) {
|
||||
c.idx = (c.ctr + c.idx + int(c.bTmp)) % len(c.hs)
|
||||
c.bTmp = c.hs[c.idx]
|
||||
c.ctr = c.ctr + 1
|
||||
//fmt.Fprintf(os.Stderr, "[c.hidx:%v c.idx:%v]\n", c.hidx, c.idx)
|
||||
|
||||
// NOTE: using a non-prime modulus degrades CV % from ~ 0.055 to ~ 0.07
|
||||
switch c.ctr % 3 {
|
||||
case 0:
|
||||
ob = c.bTmp ^ ib ^ byte(c.ctr) ^ byte(c.idx) ^
|
||||
c.hs[len(c.hs)-19] ^ c.hs[len(c.hs)-2] ^ c.hs[len(c.hs)-3] ^ c.hs[len(c.hs)-5] ^
|
||||
c.hs[len(c.hs)-7] ^ c.hs[len(c.hs)-11] ^ c.hs[len(c.hs)-13] ^ c.hs[len(c.hs)-17]
|
||||
|
||||
case 1:
|
||||
ob = c.bTmp ^ ib ^ byte(c.ctr) ^ byte(c.idx) ^
|
||||
c.hs[len(c.hs)-5] ^ c.hs[len(c.hs)-7] ^ c.hs[len(c.hs)-11] ^ c.hs[len(c.hs)-13] ^
|
||||
c.hs[len(c.hs)-17] ^ c.hs[len(c.hs)-19] ^ c.hs[len(c.hs)-23] ^ c.hs[len(c.hs)-29]
|
||||
|
||||
case 2:
|
||||
ob = c.bTmp ^ ib ^ byte(c.ctr) ^ byte(c.idx) ^
|
||||
c.hs[len(c.hs)-13] ^ c.hs[len(c.hs)-17] ^ c.hs[len(c.hs)-23] ^ c.hs[len(c.hs)-27] ^
|
||||
c.hs[len(c.hs)-29] ^ c.hs[len(c.hs)-31] ^ c.hs[len(c.hs)-2] ^ c.hs[len(c.hs)-3]
|
||||
}
|
||||
|
||||
if c.ctr%c.rekeyCtr == 0 {
|
||||
bufTmp := make([]byte, 32)
|
||||
_, _ = c.prng.Read(bufTmp)
|
||||
c.keyUpdate(bufTmp)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// XORKeyStream XORs each byte in the given slice with a byte from the
|
||||
// cipher's key stream. Dst and src must overlap entirely or not at all.
|
||||
//
|
||||
// If len(dst) < len(src), XORKeyStream should panic. It is acceptable
|
||||
// to pass a dst bigger than src, and in that case, XORKeyStream will
|
||||
// only update dst[:len(src)] and will not touch the rest of dst.
|
||||
//
|
||||
// Multiple calls to XORKeyStream behave as if the concatenation of
|
||||
// the src buffers was passed in a single run. That is, Stream
|
||||
// maintains state and does not reset at each XORKeyStream call.
|
||||
func (c *Cipher) XORKeyStream(dst, src []byte) {
|
||||
//fmt.Printf("len dst:%d len src:%d\n", len(dst), len(src))
|
||||
if len(dst) < len(src) {
|
||||
panic(errors.New("len(dst) < len(src)"))
|
||||
}
|
||||
|
||||
for idx, v := range src {
|
||||
dst[idx] = c.yield(v)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
*.swp
|
||||
*~
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
Creative Commons Legal Code
|
||||
|
||||
CC0 1.0 Universal
|
||||
|
||||
CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
|
||||
LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
|
||||
ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
|
||||
INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
|
||||
REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
|
||||
PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
|
||||
THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
|
||||
HEREUNDER.
|
||||
|
||||
Statement of Purpose
|
||||
|
||||
The laws of most jurisdictions throughout the world automatically confer
|
||||
exclusive Copyright and Related Rights (defined below) upon the creator
|
||||
and subsequent owner(s) (each and all, an "owner") of an original work of
|
||||
authorship and/or a database (each, a "Work").
|
||||
|
||||
Certain owners wish to permanently relinquish those rights to a Work for
|
||||
the purpose of contributing to a commons of creative, cultural and
|
||||
scientific works ("Commons") that the public can reliably and without fear
|
||||
of later claims of infringement build upon, modify, incorporate in other
|
||||
works, reuse and redistribute as freely as possible in any form whatsoever
|
||||
and for any purposes, including without limitation commercial purposes.
|
||||
These owners may contribute to the Commons to promote the ideal of a free
|
||||
culture and the further production of creative, cultural and scientific
|
||||
works, or to gain reputation or greater distribution for their Work in
|
||||
part through the use and efforts of others.
|
||||
|
||||
For these and/or other purposes and motivations, and without any
|
||||
expectation of additional consideration or compensation, the person
|
||||
associating CC0 with a Work (the "Affirmer"), to the extent that he or she
|
||||
is an owner of Copyright and Related Rights in the Work, voluntarily
|
||||
elects to apply CC0 to the Work and publicly distribute the Work under its
|
||||
terms, with knowledge of his or her Copyright and Related Rights in the
|
||||
Work and the meaning and intended legal effect of CC0 on those rights.
|
||||
|
||||
1. Copyright and Related Rights. A Work made available under CC0 may be
|
||||
protected by copyright and related or neighboring rights ("Copyright and
|
||||
Related Rights"). Copyright and Related Rights include, but are not
|
||||
limited to, the following:
|
||||
|
||||
i. the right to reproduce, adapt, distribute, perform, display,
|
||||
communicate, and translate a Work;
|
||||
ii. moral rights retained by the original author(s) and/or performer(s);
|
||||
iii. publicity and privacy rights pertaining to a person's image or
|
||||
likeness depicted in a Work;
|
||||
iv. rights protecting against unfair competition in regards to a Work,
|
||||
subject to the limitations in paragraph 4(a), below;
|
||||
v. rights protecting the extraction, dissemination, use and reuse of data
|
||||
in a Work;
|
||||
vi. database rights (such as those arising under Directive 96/9/EC of the
|
||||
European Parliament and of the Council of 11 March 1996 on the legal
|
||||
protection of databases, and under any national implementation
|
||||
thereof, including any amended or successor version of such
|
||||
directive); and
|
||||
vii. other similar, equivalent or corresponding rights throughout the
|
||||
world based on applicable law or treaty, and any national
|
||||
implementations thereof.
|
||||
|
||||
2. Waiver. To the greatest extent permitted by, but not in contravention
|
||||
of, applicable law, Affirmer hereby overtly, fully, permanently,
|
||||
irrevocably and unconditionally waives, abandons, and surrenders all of
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Affirmer's Copyright and Related Rights and associated claims and causes
|
||||
of action, whether now known or unknown (including existing as well as
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||||
future claims and causes of action), in the Work (i) in all territories
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||||
worldwide, (ii) for the maximum duration provided by applicable law or
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||||
treaty (including future time extensions), (iii) in any current or future
|
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medium and for any number of copies, and (iv) for any purpose whatsoever,
|
||||
including without limitation commercial, advertising or promotional
|
||||
purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
|
||||
member of the public at large and to the detriment of Affirmer's heirs and
|
||||
successors, fully intending that such Waiver shall not be subject to
|
||||
revocation, rescission, cancellation, termination, or any other legal or
|
||||
equitable action to disrupt the quiet enjoyment of the Work by the public
|
||||
as contemplated by Affirmer's express Statement of Purpose.
|
||||
|
||||
3. Public License Fallback. Should any part of the Waiver for any reason
|
||||
be judged legally invalid or ineffective under applicable law, then the
|
||||
Waiver shall be preserved to the maximum extent permitted taking into
|
||||
account Affirmer's express Statement of Purpose. In addition, to the
|
||||
extent the Waiver is so judged Affirmer hereby grants to each affected
|
||||
person a royalty-free, non transferable, non sublicensable, non exclusive,
|
||||
irrevocable and unconditional license to exercise Affirmer's Copyright and
|
||||
Related Rights in the Work (i) in all territories worldwide, (ii) for the
|
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maximum duration provided by applicable law or treaty (including future
|
||||
time extensions), (iii) in any current or future medium and for any number
|
||||
of copies, and (iv) for any purpose whatsoever, including without
|
||||
limitation commercial, advertising or promotional purposes (the
|
||||
"License"). The License shall be deemed effective as of the date CC0 was
|
||||
applied by Affirmer to the Work. Should any part of the License for any
|
||||
reason be judged legally invalid or ineffective under applicable law, such
|
||||
partial invalidity or ineffectiveness shall not invalidate the remainder
|
||||
of the License, and in such case Affirmer hereby affirms that he or she
|
||||
will not (i) exercise any of his or her remaining Copyright and Related
|
||||
Rights in the Work or (ii) assert any associated claims and causes of
|
||||
action with respect to the Work, in either case contrary to Affirmer's
|
||||
express Statement of Purpose.
|
||||
|
||||
4. Limitations and Disclaimers.
|
||||
|
||||
a. No trademark or patent rights held by Affirmer are waived, abandoned,
|
||||
surrendered, licensed or otherwise affected by this document.
|
||||
b. Affirmer offers the Work as-is and makes no representations or
|
||||
warranties of any kind concerning the Work, express, implied,
|
||||
statutory or otherwise, including without limitation warranties of
|
||||
title, merchantability, fitness for a particular purpose, non
|
||||
infringement, or the absence of latent or other defects, accuracy, or
|
||||
the present or absence of errors, whether or not discoverable, all to
|
||||
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|
||||
c. Affirmer disclaims responsibility for clearing rights of other persons
|
||||
that may apply to the Work or any use thereof, including without
|
||||
limitation any person's Copyright and Related Rights in the Work.
|
||||
Further, Affirmer disclaims responsibility for obtaining any necessary
|
||||
consents, permissions or other rights required for any use of the
|
||||
Work.
|
||||
d. Affirmer understands and acknowledges that Creative Commons is not a
|
||||
party to this document and has no duty or obligation with respect to
|
||||
this CC0 or use of the Work.
|
||||
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
### Kyber - IND-CCA2-secure Key Encapsulation Mechanism
|
||||
#### Yawning Angel (yawning at schwanenlied dot me)
|
||||
|
||||
[](https://godoc.org/git.schwanenlied.me/yawning/kyber.git)
|
||||
|
||||
This package implements the Kyber IND-CCA2-secure key encapsulation
|
||||
mechanism (KEM), based on the hardness of solving the learning-with-errors
|
||||
(LWE) problem over module lattices as submitted to the NIST Post-Quantum
|
||||
Cryptography project.
|
||||
|
||||
This implementation is a port of the Public Domain reference implementation
|
||||
by Joppe Bos, Léo Ducas, Eike Kiltz , Tancrède Lepoint, Vadim Lyubashevsky,
|
||||
John Schanck, Peter Schwabe, Gregor Seiler, and Damien Stehlé.
|
||||
|
||||
Additionally implementations of Kyber.AKE and Kyber.UAKE as presented in
|
||||
the Kyber paper are included for users that seek an authenticated key
|
||||
exchange.
|
||||
|
||||
Note that the algorithm is not finalized yet, and may change in a backward
|
||||
incompatible manner in the future. The designers currently recommend
|
||||
combining Kyber with an established pre-quantum algorithm like ECDH, and
|
||||
using the Kyber-768 parameter set.
|
||||
|
||||
For more information, see the [project home page](https://pq-crystals.org/kyber/index.shtml).
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
// cbd.go - Centered binomial distribution.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
// Load bytes into a 64-bit integer in little-endian order.
|
||||
func loadLittleEndian(x []byte, bytes int) uint64 {
|
||||
var r uint64
|
||||
for i, v := range x[:bytes] {
|
||||
r |= uint64(v) << (8 * uint(i))
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// Given an array of uniformly random bytes, compute polynomial with
|
||||
// coefficients distributed according to a centered binomial distribution
|
||||
// with parameter eta.
|
||||
func (p *poly) cbd(buf []byte, eta int) {
|
||||
hardwareAccelImpl.cbdFn(p, buf, eta)
|
||||
}
|
||||
|
||||
func cbdRef(p *poly, buf []byte, eta int) {
|
||||
switch eta {
|
||||
case 3:
|
||||
var a, b [4]uint32
|
||||
for i := 0; i < kyberN/4; i++ {
|
||||
t := loadLittleEndian(buf[3*i:], 3)
|
||||
var d uint32
|
||||
for j := 0; j < 3; j++ {
|
||||
d += uint32((t >> uint(j)) & 0x249249)
|
||||
}
|
||||
|
||||
a[0] = d & 0x7
|
||||
b[0] = (d >> 3) & 0x7
|
||||
a[1] = (d >> 6) & 0x7
|
||||
b[1] = (d >> 9) & 0x7
|
||||
a[2] = (d >> 12) & 0x7
|
||||
b[2] = (d >> 15) & 0x7
|
||||
a[3] = (d >> 18) & 0x7
|
||||
b[3] = (d >> 21)
|
||||
|
||||
p.coeffs[4*i+0] = uint16(a[0] + kyberQ - b[0])
|
||||
p.coeffs[4*i+1] = uint16(a[1] + kyberQ - b[1])
|
||||
p.coeffs[4*i+2] = uint16(a[2] + kyberQ - b[2])
|
||||
p.coeffs[4*i+3] = uint16(a[3] + kyberQ - b[3])
|
||||
}
|
||||
case 4:
|
||||
var a, b [4]uint32
|
||||
for i := 0; i < kyberN/4; i++ {
|
||||
t := loadLittleEndian(buf[4*i:], 4)
|
||||
var d uint32
|
||||
for j := 0; j < 4; j++ {
|
||||
d += uint32((t >> uint(j)) & 0x11111111)
|
||||
}
|
||||
|
||||
a[0] = d & 0xf
|
||||
b[0] = (d >> 4) & 0xf
|
||||
a[1] = (d >> 8) & 0xf
|
||||
b[1] = (d >> 12) & 0xf
|
||||
a[2] = (d >> 16) & 0xf
|
||||
b[2] = (d >> 20) & 0xf
|
||||
a[3] = (d >> 24) & 0xf
|
||||
b[3] = (d >> 28)
|
||||
|
||||
p.coeffs[4*i+0] = uint16(a[0] + kyberQ - b[0])
|
||||
p.coeffs[4*i+1] = uint16(a[1] + kyberQ - b[1])
|
||||
p.coeffs[4*i+2] = uint16(a[2] + kyberQ - b[2])
|
||||
p.coeffs[4*i+3] = uint16(a[3] + kyberQ - b[3])
|
||||
}
|
||||
case 5:
|
||||
var a, b [4]uint64
|
||||
for i := 0; i < kyberN/4; i++ {
|
||||
t := loadLittleEndian(buf[5*i:], 5)
|
||||
var d uint64
|
||||
for j := 0; j < 5; j++ {
|
||||
d += (t >> uint(j)) & 0x0842108421
|
||||
}
|
||||
|
||||
a[0] = d & 0x1f
|
||||
b[0] = (d >> 5) & 0x1f
|
||||
a[1] = (d >> 10) & 0x1f
|
||||
b[1] = (d >> 15) & 0x1f
|
||||
a[2] = (d >> 20) & 0x1f
|
||||
b[2] = (d >> 25) & 0x1f
|
||||
a[3] = (d >> 30) & 0x1f
|
||||
b[3] = (d >> 35)
|
||||
|
||||
p.coeffs[4*i+0] = uint16(a[0] + kyberQ - b[0])
|
||||
p.coeffs[4*i+1] = uint16(a[1] + kyberQ - b[1])
|
||||
p.coeffs[4*i+2] = uint16(a[2] + kyberQ - b[2])
|
||||
p.coeffs[4*i+3] = uint16(a[3] + kyberQ - b[3])
|
||||
}
|
||||
default:
|
||||
panic("kyber: eta must be in {3,4,5}")
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
// doc.go - Kyber godoc extras.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
// Package kyber implements the Kyber IND-CCA2-secure key encapsulation
|
||||
// mechanism (KEM), based on the hardness of solving the learning-with-errors
|
||||
// (LWE) problem over module lattices as submitted to the NIST Post-Quantum
|
||||
// Cryptography project.
|
||||
//
|
||||
// This implementation is a port of the Public Domain reference implementation
|
||||
// by Joppe Bos, Léo Ducas, Eike Kiltz , Tancrède Lepoint, Vadim Lyubashevsky,
|
||||
// John Schanck, Peter Schwabe, Gregor Seiler, and Damien Stehlé.
|
||||
//
|
||||
// Additionally implementations of Kyber.AKE and Kyber.UAKE as presented in
|
||||
// the Kyber paper are included for users that seek an authenticated key
|
||||
// exchange.
|
||||
//
|
||||
// Note that the algorithm is not finalized yet, and may change in a backward
|
||||
// incompatible manner in the future. The designers currently recommend
|
||||
// combining Kyber with an established pre-quantum algorithm like ECDH, and
|
||||
// using the Kyber-768 parameter set.
|
||||
//
|
||||
// For more information, see https://pq-crystals.org/kyber/index.shtml.
|
||||
package kyber
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
// hwaccel.go - Hardware acceleration hooks.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
var (
|
||||
isHardwareAccelerated = false
|
||||
hardwareAccelImpl = implReference
|
||||
|
||||
implReference = &hwaccelImpl{
|
||||
name: "Reference",
|
||||
nttFn: nttRef,
|
||||
invnttFn: invnttRef,
|
||||
pointwiseAccFn: pointwiseAccRef,
|
||||
cbdFn: cbdRef,
|
||||
}
|
||||
)
|
||||
|
||||
type hwaccelImpl struct {
|
||||
name string
|
||||
nttFn func(*[kyberN]uint16)
|
||||
invnttFn func(*[kyberN]uint16)
|
||||
pointwiseAccFn func(*poly, *polyVec, *polyVec)
|
||||
cbdFn func(*poly, []byte, int)
|
||||
}
|
||||
|
||||
func forceDisableHardwareAcceleration() {
|
||||
// This is for the benefit of testing, so that it's possible to test
|
||||
// all versions that are supported by the host.
|
||||
isHardwareAccelerated = false
|
||||
hardwareAccelImpl = implReference
|
||||
}
|
||||
|
||||
// IsHardwareAccelerated returns true iff the Kyber implementation will use
|
||||
// hardware acceleration (eg: AVX2).
|
||||
func IsHardwareAccelerated() bool {
|
||||
return isHardwareAccelerated
|
||||
}
|
||||
|
||||
func init() {
|
||||
initHardwareAcceleration()
|
||||
}
|
||||
|
|
@ -0,0 +1,256 @@
|
|||
// hwaccel_amd64.go - AMD64 optimized routines.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
// +build amd64,!gccgo,!noasm,go1.10
|
||||
|
||||
package kyber
|
||||
|
||||
var zetasExp = [752]uint16{
|
||||
3777, 3777, 3777, 3777, 3777, 3777, 3777, 3777, 3777, 3777, 3777, 3777,
|
||||
3777, 3777, 3777, 3777, 4499, 4499, 4499, 4499, 4499, 4499, 4499, 4499,
|
||||
4499, 4499, 4499, 4499, 4499, 4499, 4499, 4499, 3625, 3625, 3625, 3625,
|
||||
3625, 3625, 3625, 3625, 3625, 3625, 3625, 3625, 3625, 3625, 3625, 3625,
|
||||
3985, 3985, 3985, 3985, 3985, 3985, 3985, 3985, 3985, 3985, 3985, 3985,
|
||||
3985, 3985, 3985, 3985, 6581, 6581, 6581, 6581, 6581, 6581, 6581, 6581,
|
||||
6581, 6581, 6581, 6581, 6581, 6581, 6581, 6581, 2456, 2456, 2456, 2456,
|
||||
2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456,
|
||||
2194, 2194, 2194, 2194, 2194, 2194, 2194, 2194, 2194, 2194, 2194, 2194,
|
||||
2194, 2194, 2194, 2194, 121, 121, 121, 121, 121, 121, 121, 121, 121,
|
||||
121, 121, 121, 121, 121, 121, 121, 5431, 5431, 5431, 5431, 5431, 5431,
|
||||
5431, 5431, 5431, 5431, 5431, 5431, 5431, 5431, 5431, 5431, 834, 834,
|
||||
834, 834, 834, 834, 834, 834, 834, 834, 834, 834, 834, 834, 834, 834,
|
||||
5186, 5186, 5186, 5186, 5186, 5186, 5186, 5186, 5186, 5186, 5186, 5186,
|
||||
5186, 5186, 5186, 5186, 5362, 5362, 5362, 5362, 5362, 5362, 5362, 5362,
|
||||
5362, 5362, 5362, 5362, 5362, 5362, 5362, 5362, 2876, 2876, 2876, 2876,
|
||||
2876, 2876, 2876, 2876, 2876, 2876, 2876, 2876, 2876, 2876, 2876, 2876,
|
||||
5980, 5980, 5980, 5980, 5980, 5980, 5980, 5980, 5980, 5980, 5980, 5980,
|
||||
5980, 5980, 5980, 5980, 1414, 1414, 1414, 1414, 1414, 1414, 1414, 1414,
|
||||
1414, 1414, 1414, 1414, 1414, 1414, 1414, 1414, 2816, 2816, 2816, 2816,
|
||||
2816, 2816, 2816, 2816, 5593, 5593, 5593, 5593, 5593, 5593, 5593, 5593,
|
||||
5444, 5444, 5444, 5444, 5444, 5444, 5444, 5444, 1986, 1986, 1986, 1986,
|
||||
1986, 1986, 1986, 1986, 6082, 6082, 6082, 6082, 6082, 6082, 6082, 6082,
|
||||
1993, 1993, 1993, 1993, 1993, 1993, 1993, 1993, 3706, 3706, 3706, 3706,
|
||||
3706, 3706, 3706, 3706, 5675, 5675, 5675, 5675, 5675, 5675, 5675, 5675,
|
||||
6156, 6156, 6156, 6156, 6156, 6156, 6156, 6156, 5124, 5124, 5124, 5124,
|
||||
5124, 5124, 5124, 5124, 1296, 1296, 1296, 1296, 1296, 1296, 1296, 1296,
|
||||
1483, 1483, 1483, 1483, 1483, 1483, 1483, 1483, 4851, 4851, 4851, 4851,
|
||||
4851, 4851, 4851, 4851, 3364, 3364, 3364, 3364, 3364, 3364, 3364, 3364,
|
||||
617, 617, 617, 617, 617, 617, 617, 617, 1921, 1921, 1921, 1921, 1921,
|
||||
1921, 1921, 1921, 3992, 3992, 3992, 3992, 5943, 5943, 5943, 5943, 3266,
|
||||
3266, 3266, 3266, 4081, 4081, 4081, 4081, 810, 810, 810, 810, 1887,
|
||||
1887, 1887, 1887, 7043, 7043, 7043, 7043, 7674, 7674, 7674, 7674, 7243,
|
||||
7243, 7243, 7243, 7002, 7002, 7002, 7002, 6376, 6376, 6376, 6376, 5921,
|
||||
5921, 5921, 5921, 396, 396, 396, 396, 4507, 4507, 4507, 4507, 4126,
|
||||
4126, 4126, 4126, 5800, 5800, 5800, 5800, 3772, 3772, 3772, 3772, 5146,
|
||||
5146, 5146, 5146, 5241, 5241, 5241, 5241, 5126, 5126, 5126, 5126, 1535,
|
||||
1535, 1535, 1535, 7132, 7132, 7132, 7132, 3153, 3153, 3153, 3153, 2310,
|
||||
2310, 2310, 2310, 6282, 6282, 6282, 6282, 1321, 1321, 1321, 1321, 514,
|
||||
514, 514, 514, 4725, 4725, 4725, 4725, 7578, 7578, 7578, 7578, 2804,
|
||||
2804, 2804, 2804, 5638, 5638, 5638, 5638, 6250, 6250, 6250, 6250, 6627,
|
||||
6627, 1698, 1698, 4225, 4225, 1166, 1166, 2426, 2426, 3831, 3831, 915,
|
||||
915, 7679, 7679, 4264, 4264, 7487, 7487, 2919, 2919, 2789, 2789, 3405,
|
||||
3405, 2385, 2385, 5568, 5568, 4949, 4949, 2175, 2175, 373, 373, 3692,
|
||||
3692, 6951, 6951, 5925, 5925, 3135, 3135, 5290, 5290, 660, 660, 6184,
|
||||
6184, 2572, 2572, 4536, 4536, 1350, 1350, 5457, 5457, 4093, 4093, 6000,
|
||||
6000, 2883, 2883, 6291, 6291, 1598, 1598, 3750, 3750, 2762, 2762, 2835,
|
||||
2835, 2764, 2764, 5448, 5448, 3816, 3816, 6148, 6148, 1464, 1464, 6954,
|
||||
6954, 1521, 1521, 1386, 1386, 4253, 4253, 6760, 6760, 4938, 4938, 5521,
|
||||
5521, 2649, 2649, 6822, 6822, 2579, 2579, 1532, 1532, 1919, 1919, 7195,
|
||||
7195, 404, 404, 6625, 6625, 783, 783, 1799, 1799, 5016, 5016, 3480,
|
||||
3480, 2133, 2133, 4371, 4371, 6513, 6513, 7664, 3744, 2422, 2001, 1278,
|
||||
929, 6333, 5451, 7502, 6439, 5622, 6611, 2161, 1649, 2072, 3177, 5610,
|
||||
1121, 7245, 236, 715, 670, 7023, 6205, 5303, 2767, 3542, 7455, 1203,
|
||||
1181, 7530, 3887, 1712, 7459, 2786, 7230, 4134, 1779, 6530, 7247, 3568,
|
||||
3988, 3581, 6095, 1509, 2918, 2339, 6274, 3434, 4131, 2340, 2891, 2998,
|
||||
4367, 3461, 4962, 5434, 5092, 1144, 1072, 1295, 4866, 3911, 3450, 3781,
|
||||
5423, 796, 3163, 4473, 7092, 2963, 7557, 3214, 3334, 4315, 3936, 3723,
|
||||
1931, 7252, 7279, 4273, 83, 6155, 826, 6343, 2345, 5378, 2515, 7039,
|
||||
5844, 4716, 6890, 370, 293, 3312, 2083, 5992, 6904, 2070, 2262, 6788,
|
||||
2386, 7493, 6162, 4807, 6277, 1012, 2130, 1441, 2532, 4346, 6597, 4338,
|
||||
2937, 509, 6278, 2812, 3763, 592, 2005, 3657, 2460, 4004, 3752, 692,
|
||||
1669, 2167, 4394,
|
||||
}
|
||||
|
||||
var zetasInvExp = [752]uint16{
|
||||
3287, 5514, 6012, 6989, 3929, 3677, 5221, 4024, 5676, 7089, 3918, 4869,
|
||||
1403, 7172, 4744, 3343, 1084, 3335, 5149, 6240, 5551, 6669, 1404, 2874,
|
||||
1519, 188, 5295, 893, 5419, 5611, 777, 1689, 5598, 4369, 7388, 7311,
|
||||
791, 2965, 1837, 642, 5166, 2303, 5336, 1338, 6855, 1526, 7598, 3408,
|
||||
402, 429, 5750, 3958, 3745, 3366, 4347, 4467, 124, 4718, 589, 3208,
|
||||
4518, 6885, 2258, 3900, 4231, 3770, 2815, 6386, 6609, 6537, 2589, 2247,
|
||||
2719, 4220, 3314, 4683, 4790, 5341, 3550, 4247, 1407, 5342, 4763, 6172,
|
||||
1586, 4100, 3693, 4113, 434, 1151, 5902, 3547, 451, 4895, 222, 5969,
|
||||
3794, 151, 6500, 6478, 226, 4139, 4914, 2378, 1476, 658, 7011, 6966,
|
||||
7445, 436, 6560, 2071, 4504, 5609, 6032, 5520, 1070, 2059, 1242, 179,
|
||||
2230, 1348, 6752, 6403, 5680, 5259, 3937, 17, 1168, 1168, 3310, 3310,
|
||||
5548, 5548, 4201, 4201, 2665, 2665, 5882, 5882, 6898, 6898, 1056, 1056,
|
||||
7277, 7277, 486, 486, 5762, 5762, 6149, 6149, 5102, 5102, 859, 859,
|
||||
5032, 5032, 2160, 2160, 2743, 2743, 921, 921, 3428, 3428, 6295, 6295,
|
||||
6160, 6160, 727, 727, 6217, 6217, 1533, 1533, 3865, 3865, 2233, 2233,
|
||||
4917, 4917, 4846, 4846, 4919, 4919, 3931, 3931, 6083, 6083, 1390, 1390,
|
||||
4798, 4798, 1681, 1681, 3588, 3588, 2224, 2224, 6331, 6331, 3145, 3145,
|
||||
5109, 5109, 1497, 1497, 7021, 7021, 2391, 2391, 4546, 4546, 1756, 1756,
|
||||
730, 730, 3989, 3989, 7308, 7308, 5506, 5506, 2732, 2732, 2113, 2113,
|
||||
5296, 5296, 4276, 4276, 4892, 4892, 4762, 4762, 194, 194, 3417, 3417, 2,
|
||||
2, 6766, 6766, 3850, 3850, 5255, 5255, 6515, 6515, 3456, 3456, 5983,
|
||||
5983, 1054, 1054, 1431, 1431, 1431, 1431, 2043, 2043, 2043, 2043, 4877,
|
||||
4877, 4877, 4877, 103, 103, 103, 103, 2956, 2956, 2956, 2956, 7167,
|
||||
7167, 7167, 7167, 6360, 6360, 6360, 6360, 1399, 1399, 1399, 1399, 5371,
|
||||
5371, 5371, 5371, 4528, 4528, 4528, 4528, 549, 549, 549, 549, 6146,
|
||||
6146, 6146, 6146, 2555, 2555, 2555, 2555, 2440, 2440, 2440, 2440, 2535,
|
||||
2535, 2535, 2535, 3909, 3909, 3909, 3909, 1881, 1881, 1881, 1881, 3555,
|
||||
3555, 3555, 3555, 3174, 3174, 3174, 3174, 7285, 7285, 7285, 7285, 1760,
|
||||
1760, 1760, 1760, 1305, 1305, 1305, 1305, 679, 679, 679, 679, 438, 438,
|
||||
438, 438, 7, 7, 7, 7, 638, 638, 638, 638, 5794, 5794, 5794, 5794, 6871,
|
||||
6871, 6871, 6871, 3600, 3600, 3600, 3600, 4415, 4415, 4415, 4415, 1738,
|
||||
1738, 1738, 1738, 3689, 3689, 3689, 3689, 5760, 5760, 5760, 5760, 5760,
|
||||
5760, 5760, 5760, 7064, 7064, 7064, 7064, 7064, 7064, 7064, 7064, 4317,
|
||||
4317, 4317, 4317, 4317, 4317, 4317, 4317, 2830, 2830, 2830, 2830, 2830,
|
||||
2830, 2830, 2830, 6198, 6198, 6198, 6198, 6198, 6198, 6198, 6198, 6385,
|
||||
6385, 6385, 6385, 6385, 6385, 6385, 6385, 2557, 2557, 2557, 2557, 2557,
|
||||
2557, 2557, 2557, 1525, 1525, 1525, 1525, 1525, 1525, 1525, 1525, 2006,
|
||||
2006, 2006, 2006, 2006, 2006, 2006, 2006, 3975, 3975, 3975, 3975, 3975,
|
||||
3975, 3975, 3975, 5688, 5688, 5688, 5688, 5688, 5688, 5688, 5688, 1599,
|
||||
1599, 1599, 1599, 1599, 1599, 1599, 1599, 5695, 5695, 5695, 5695, 5695,
|
||||
5695, 5695, 5695, 2237, 2237, 2237, 2237, 2237, 2237, 2237, 2237, 2088,
|
||||
2088, 2088, 2088, 2088, 2088, 2088, 2088, 4865, 4865, 4865, 4865, 4865,
|
||||
4865, 4865, 4865, 6267, 6267, 6267, 6267, 6267, 6267, 6267, 6267, 6267,
|
||||
6267, 6267, 6267, 6267, 6267, 6267, 6267, 1701, 1701, 1701, 1701, 1701,
|
||||
1701, 1701, 1701, 1701, 1701, 1701, 1701, 1701, 1701, 1701, 1701, 4805,
|
||||
4805, 4805, 4805, 4805, 4805, 4805, 4805, 4805, 4805, 4805, 4805, 4805,
|
||||
4805, 4805, 4805, 2319, 2319, 2319, 2319, 2319, 2319, 2319, 2319, 2319,
|
||||
2319, 2319, 2319, 2319, 2319, 2319, 2319, 2495, 2495, 2495, 2495, 2495,
|
||||
2495, 2495, 2495, 2495, 2495, 2495, 2495, 2495, 2495, 2495, 2495, 6847,
|
||||
6847, 6847, 6847, 6847, 6847, 6847, 6847, 6847, 6847, 6847, 6847, 6847,
|
||||
6847, 6847, 6847, 2250, 2250, 2250, 2250, 2250, 2250, 2250, 2250, 2250,
|
||||
2250, 2250, 2250, 2250, 2250, 2250, 2250, 7560, 7560, 7560, 7560, 7560,
|
||||
7560, 7560, 7560, 7560, 7560, 7560, 7560, 7560, 7560, 7560, 7560, 5487,
|
||||
5487, 5487, 5487, 5487, 5487, 5487, 5487, 5487, 5487, 5487, 5487, 5487,
|
||||
5487, 5487, 5487, 5225, 5225, 5225, 5225, 5225, 5225, 5225, 5225, 5225,
|
||||
5225, 5225, 5225, 5225, 5225, 5225, 5225, 1100, 1100, 1100, 1100, 1100,
|
||||
1100, 1100, 1100, 1100, 1100, 1100, 1100, 1100, 1100, 1100, 1100, 3696,
|
||||
3696, 3696, 3696, 3696, 3696, 3696, 3696, 3696, 3696, 3696, 3696, 3696,
|
||||
3696, 3696, 3696, 4056, 4056, 4056, 4056, 4056, 4056, 4056, 4056, 4056,
|
||||
4056, 4056, 4056, 4056, 4056, 4056, 4056, 3182, 3182, 3182, 3182, 3182,
|
||||
3182, 3182, 3182, 3182, 3182, 3182, 3182, 3182, 3182, 3182, 3182, 5776,
|
||||
5776, 5776, 5776, 5776, 5776, 5776, 5776, 5776, 5776, 5776, 5776, 5776,
|
||||
5776, 5776, 5776,
|
||||
}
|
||||
|
||||
//go:noescape
|
||||
func cpuidAmd64(cpuidParams *uint32)
|
||||
|
||||
//go:noescape
|
||||
func xgetbv0Amd64(xcrVec *uint32)
|
||||
|
||||
//go:noescape
|
||||
func nttAVX2(inout, zetas *uint16)
|
||||
|
||||
//go:noescape
|
||||
func invnttAVX2(inout, omegas *uint16)
|
||||
|
||||
//go:noescape
|
||||
func pointwiseAccK2AVX2(dst *uint16, a, b **uint16)
|
||||
|
||||
//go:noescape
|
||||
func pointwiseAccK3AVX2(dst *uint16, a, b **uint16)
|
||||
|
||||
//go:noescape
|
||||
func pointwiseAccK4AVX2(dst *uint16, a, b **uint16)
|
||||
|
||||
//go:noescape
|
||||
func cbdEta4AVX2(dst *uint16, buf *byte)
|
||||
|
||||
func supportsAVX2() bool {
|
||||
// https://software.intel.com/en-us/articles/how-to-detect-new-instruction-support-in-the-4th-generation-intel-core-processor-family
|
||||
const (
|
||||
osXsaveBit = 1 << 27
|
||||
avx2Bit = 1 << 5
|
||||
)
|
||||
|
||||
// Check to see if CPUID actually supports the leaf that indicates AVX2.
|
||||
// CPUID.(EAX=0H, ECX=0H) >= 7
|
||||
regs := [4]uint32{0x00}
|
||||
cpuidAmd64(®s[0])
|
||||
if regs[0] < 7 {
|
||||
return false
|
||||
}
|
||||
|
||||
// Check to see if the OS knows how to save/restore XMM/YMM state.
|
||||
// CPUID.(EAX=01H, ECX=0H):ECX.OSXSAVE[bit 27]==1
|
||||
regs = [4]uint32{0x01}
|
||||
cpuidAmd64(®s[0])
|
||||
if regs[2]&osXsaveBit == 0 {
|
||||
return false
|
||||
}
|
||||
xcrRegs := [2]uint32{}
|
||||
xgetbv0Amd64(&xcrRegs[0])
|
||||
if xcrRegs[0]&6 != 6 {
|
||||
return false
|
||||
}
|
||||
|
||||
// Check for AVX2 support.
|
||||
// CPUID.(EAX=07H, ECX=0H):EBX.AVX2[bit 5]==1
|
||||
regs = [4]uint32{0x07}
|
||||
cpuidAmd64(®s[0])
|
||||
return regs[1]&avx2Bit != 0
|
||||
}
|
||||
|
||||
var implAVX2 = &hwaccelImpl{
|
||||
name: "AVX2",
|
||||
nttFn: nttYMM,
|
||||
invnttFn: invnttYMM,
|
||||
pointwiseAccFn: pointwiseAccYMM,
|
||||
cbdFn: cbdYMM,
|
||||
}
|
||||
|
||||
func nttYMM(p *[kyberN]uint16) {
|
||||
nttAVX2(&p[0], &zetasExp[0])
|
||||
}
|
||||
|
||||
func invnttYMM(a *[kyberN]uint16) {
|
||||
invnttAVX2(&a[0], &zetasInvExp[0])
|
||||
}
|
||||
|
||||
func pointwiseAccYMM(p *poly, a, b *polyVec) {
|
||||
// Unlike the C code, a polyVec won't have the polys in contigious
|
||||
// memory. So each assembly function takes vectors of pointers to
|
||||
// each polyvec's polys.
|
||||
//
|
||||
// Kind of ugly, but it's the price to pay for flexibility...
|
||||
|
||||
var aVec, bVec [4]*uint16 // k is in {2,3,4}.
|
||||
for i := range a.vec {
|
||||
aVec[i] = &a.vec[i].coeffs[0]
|
||||
bVec[i] = &b.vec[i].coeffs[0]
|
||||
}
|
||||
|
||||
switch len(a.vec) {
|
||||
case 2:
|
||||
pointwiseAccK2AVX2(&p.coeffs[0], &aVec[0], &bVec[0])
|
||||
case 3:
|
||||
pointwiseAccK3AVX2(&p.coeffs[0], &aVec[0], &bVec[0])
|
||||
case 4:
|
||||
pointwiseAccK4AVX2(&p.coeffs[0], &aVec[0], &bVec[0])
|
||||
}
|
||||
}
|
||||
|
||||
func cbdYMM(p *poly, buf []byte, eta int) {
|
||||
switch eta {
|
||||
case 4:
|
||||
cbdEta4AVX2(&p.coeffs[0], &buf[0])
|
||||
default:
|
||||
cbdRef(p, buf, eta)
|
||||
}
|
||||
}
|
||||
|
||||
func initHardwareAcceleration() {
|
||||
if supportsAVX2() {
|
||||
isHardwareAccelerated = true
|
||||
hardwareAccelImpl = implAVX2
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,14 @@
|
|||
// hwaccel_ref.go - Unaccelerated stubs.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
// +build !amd64 gccgo noasm !go1.10
|
||||
|
||||
package kyber
|
||||
|
||||
func initHardwareAcceleration() {
|
||||
forceDisableHardwareAcceleration()
|
||||
}
|
||||
|
|
@ -0,0 +1,279 @@
|
|||
// indcpa.go - Kyber IND-CPA encryption.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
// Serialize the public key as concatenation of the compressed and serialized
|
||||
// vector of polynomials pk and the public seed used to generate the matrix A.
|
||||
func packPublicKey(r []byte, pk *polyVec, seed []byte) {
|
||||
pk.compress(r)
|
||||
copy(r[pk.compressedSize():], seed[:SymSize])
|
||||
}
|
||||
|
||||
// De-serialize and decompress public key from a byte array; approximate
|
||||
// inverse of packPublicKey.
|
||||
func unpackPublicKey(pk *polyVec, seed, packedPk []byte) {
|
||||
pk.decompress(packedPk)
|
||||
|
||||
off := pk.compressedSize()
|
||||
copy(seed, packedPk[off:off+SymSize])
|
||||
}
|
||||
|
||||
// Serialize the ciphertext as concatenation of the compressed and serialized
|
||||
// vector of polynomials b and the compressed and serialized polynomial v.
|
||||
func packCiphertext(r []byte, b *polyVec, v *poly) {
|
||||
b.compress(r)
|
||||
v.compress(r[b.compressedSize():])
|
||||
}
|
||||
|
||||
// De-serialize and decompress ciphertext from a byte array; approximate
|
||||
// inverse of packCiphertext.
|
||||
func unpackCiphertext(b *polyVec, v *poly, c []byte) {
|
||||
b.decompress(c)
|
||||
v.decompress(c[b.compressedSize():])
|
||||
}
|
||||
|
||||
// Serialize the secret key.
|
||||
func packSecretKey(r []byte, sk *polyVec) {
|
||||
sk.toBytes(r)
|
||||
}
|
||||
|
||||
// De-serialize the secret key; inverse of packSecretKey.
|
||||
func unpackSecretKey(sk *polyVec, packedSk []byte) {
|
||||
sk.fromBytes(packedSk)
|
||||
}
|
||||
|
||||
// Deterministically generate matrix A (or the transpose of A) from a seed.
|
||||
// Entries of the matrix are polynomials that look uniformly random. Performs
|
||||
// rejection sampling on output of SHAKE-128.
|
||||
func genMatrix(a []polyVec, seed []byte, transposed bool) {
|
||||
const (
|
||||
shake128Rate = 168 // xof.BlockSize() is not a constant.
|
||||
maxBlocks = 4
|
||||
)
|
||||
var buf [shake128Rate * maxBlocks]byte
|
||||
|
||||
var extSeed [SymSize + 2]byte
|
||||
copy(extSeed[:SymSize], seed)
|
||||
|
||||
xof := sha3.NewShake128()
|
||||
|
||||
for i, v := range a {
|
||||
for j, p := range v.vec {
|
||||
if transposed {
|
||||
extSeed[SymSize] = byte(i)
|
||||
extSeed[SymSize+1] = byte(j)
|
||||
} else {
|
||||
extSeed[SymSize] = byte(j)
|
||||
extSeed[SymSize+1] = byte(i)
|
||||
}
|
||||
|
||||
xof.Write(extSeed[:])
|
||||
xof.Read(buf[:])
|
||||
|
||||
for ctr, pos, maxPos := 0, 0, len(buf); ctr < kyberN; {
|
||||
val := (uint16(buf[pos]) | (uint16(buf[pos+1]) << 8)) & 0x1fff
|
||||
if val < kyberQ {
|
||||
p.coeffs[ctr] = val
|
||||
ctr++
|
||||
}
|
||||
if pos += 2; pos == maxPos {
|
||||
// On the unlikely chance 4 blocks is insufficient,
|
||||
// incrementally squeeze out 1 block at a time.
|
||||
xof.Read(buf[:shake128Rate])
|
||||
pos, maxPos = 0, shake128Rate
|
||||
}
|
||||
}
|
||||
|
||||
xof.Reset()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type indcpaPublicKey struct {
|
||||
packed []byte
|
||||
h [32]byte
|
||||
}
|
||||
|
||||
func (pk *indcpaPublicKey) toBytes() []byte {
|
||||
return pk.packed
|
||||
}
|
||||
|
||||
func (pk *indcpaPublicKey) fromBytes(p *ParameterSet, b []byte) error {
|
||||
if len(b) != p.indcpaPublicKeySize {
|
||||
return ErrInvalidKeySize
|
||||
}
|
||||
|
||||
pk.packed = make([]byte, len(b))
|
||||
copy(pk.packed, b)
|
||||
pk.h = sha3.Sum256(b)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type indcpaSecretKey struct {
|
||||
packed []byte
|
||||
}
|
||||
|
||||
func (sk *indcpaSecretKey) fromBytes(p *ParameterSet, b []byte) error {
|
||||
if len(b) != p.indcpaSecretKeySize {
|
||||
return ErrInvalidKeySize
|
||||
}
|
||||
|
||||
sk.packed = make([]byte, len(b))
|
||||
copy(sk.packed, b)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Generates public and private key for the CPA-secure public-key encryption
|
||||
// scheme underlying Kyber.
|
||||
func (p *ParameterSet) indcpaKeyPair(rng io.Reader) (*indcpaPublicKey, *indcpaSecretKey, error) {
|
||||
buf := make([]byte, SymSize+SymSize)
|
||||
if _, err := io.ReadFull(rng, buf[:SymSize]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
sk := &indcpaSecretKey{
|
||||
packed: make([]byte, p.indcpaSecretKeySize),
|
||||
}
|
||||
pk := &indcpaPublicKey{
|
||||
packed: make([]byte, p.indcpaPublicKeySize),
|
||||
}
|
||||
|
||||
h := sha3.New512()
|
||||
h.Write(buf[:SymSize])
|
||||
buf = buf[:0] // Reuse the backing store.
|
||||
buf = h.Sum(buf)
|
||||
publicSeed, noiseSeed := buf[:SymSize], buf[SymSize:]
|
||||
|
||||
a := p.allocMatrix()
|
||||
genMatrix(a, publicSeed, false)
|
||||
|
||||
var nonce byte
|
||||
skpv := p.allocPolyVec()
|
||||
for _, pv := range skpv.vec {
|
||||
pv.getNoise(noiseSeed, nonce, p.eta)
|
||||
nonce++
|
||||
}
|
||||
|
||||
skpv.ntt()
|
||||
|
||||
e := p.allocPolyVec()
|
||||
for _, pv := range e.vec {
|
||||
pv.getNoise(noiseSeed, nonce, p.eta)
|
||||
nonce++
|
||||
}
|
||||
|
||||
// matrix-vector multiplication
|
||||
pkpv := p.allocPolyVec()
|
||||
for i, pv := range pkpv.vec {
|
||||
pv.pointwiseAcc(&skpv, &a[i])
|
||||
}
|
||||
|
||||
pkpv.invntt()
|
||||
pkpv.add(&pkpv, &e)
|
||||
|
||||
packSecretKey(sk.packed, &skpv)
|
||||
packPublicKey(pk.packed, &pkpv, publicSeed)
|
||||
pk.h = sha3.Sum256(pk.packed)
|
||||
|
||||
return pk, sk, nil
|
||||
}
|
||||
|
||||
// Encryption function of the CPA-secure public-key encryption scheme
|
||||
// underlying Kyber.
|
||||
func (p *ParameterSet) indcpaEncrypt(c, m []byte, pk *indcpaPublicKey, coins []byte) {
|
||||
var k, v, epp poly
|
||||
var seed [SymSize]byte
|
||||
|
||||
pkpv := p.allocPolyVec()
|
||||
unpackPublicKey(&pkpv, seed[:], pk.packed)
|
||||
|
||||
k.fromMsg(m)
|
||||
|
||||
pkpv.ntt()
|
||||
|
||||
at := p.allocMatrix()
|
||||
genMatrix(at, seed[:], true)
|
||||
|
||||
var nonce byte
|
||||
sp := p.allocPolyVec()
|
||||
for _, pv := range sp.vec {
|
||||
pv.getNoise(coins, nonce, p.eta)
|
||||
nonce++
|
||||
}
|
||||
|
||||
sp.ntt()
|
||||
|
||||
ep := p.allocPolyVec()
|
||||
for _, pv := range ep.vec {
|
||||
pv.getNoise(coins, nonce, p.eta)
|
||||
nonce++
|
||||
}
|
||||
|
||||
// matrix-vector multiplication
|
||||
bp := p.allocPolyVec()
|
||||
for i, pv := range bp.vec {
|
||||
pv.pointwiseAcc(&sp, &at[i])
|
||||
}
|
||||
|
||||
bp.invntt()
|
||||
bp.add(&bp, &ep)
|
||||
|
||||
v.pointwiseAcc(&pkpv, &sp)
|
||||
v.invntt()
|
||||
|
||||
epp.getNoise(coins, nonce, p.eta) // Don't need to increment nonce.
|
||||
|
||||
v.add(&v, &epp)
|
||||
v.add(&v, &k)
|
||||
|
||||
packCiphertext(c, &bp, &v)
|
||||
}
|
||||
|
||||
// Decryption function of the CPA-secure public-key encryption scheme
|
||||
// underlying Kyber.
|
||||
func (p *ParameterSet) indcpaDecrypt(m, c []byte, sk *indcpaSecretKey) {
|
||||
var v, mp poly
|
||||
|
||||
skpv, bp := p.allocPolyVec(), p.allocPolyVec()
|
||||
unpackCiphertext(&bp, &v, c)
|
||||
unpackSecretKey(&skpv, sk.packed)
|
||||
|
||||
bp.ntt()
|
||||
|
||||
mp.pointwiseAcc(&skpv, &bp)
|
||||
mp.invntt()
|
||||
|
||||
mp.sub(&mp, &v)
|
||||
|
||||
mp.toMsg(m)
|
||||
}
|
||||
|
||||
func (p *ParameterSet) allocMatrix() []polyVec {
|
||||
m := make([]polyVec, 0, p.k)
|
||||
for i := 0; i < p.k; i++ {
|
||||
m = append(m, p.allocPolyVec())
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
func (p *ParameterSet) allocPolyVec() polyVec {
|
||||
vec := make([]*poly, 0, p.k)
|
||||
for i := 0; i < p.k; i++ {
|
||||
vec = append(vec, new(poly))
|
||||
}
|
||||
|
||||
return polyVec{vec}
|
||||
}
|
||||
|
|
@ -0,0 +1,187 @@
|
|||
// kem.go - Kyber key encapsulation mechanism.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/subtle"
|
||||
"errors"
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrInvalidKeySize is the error returned when a byte serailized key is
|
||||
// an invalid size.
|
||||
ErrInvalidKeySize = errors.New("kyber: invalid key size")
|
||||
|
||||
// ErrInvalidCipherTextSize is the error thrown via a panic when a byte
|
||||
// serialized ciphertext is an invalid size.
|
||||
ErrInvalidCipherTextSize = errors.New("kyber: invalid ciphertext size")
|
||||
|
||||
// ErrInvalidPrivateKey is the error returned when a byte serialized
|
||||
// private key is malformed.
|
||||
ErrInvalidPrivateKey = errors.New("kyber: invalid private key")
|
||||
)
|
||||
|
||||
// PrivateKey is a Kyber private key.
|
||||
type PrivateKey struct {
|
||||
PublicKey
|
||||
sk *indcpaSecretKey
|
||||
z []byte
|
||||
}
|
||||
|
||||
// Bytes returns the byte serialization of a PrivateKey.
|
||||
func (sk *PrivateKey) Bytes() []byte {
|
||||
p := sk.PublicKey.p
|
||||
|
||||
b := make([]byte, 0, p.secretKeySize)
|
||||
b = append(b, sk.sk.packed...)
|
||||
b = append(b, sk.PublicKey.pk.packed...)
|
||||
b = append(b, sk.PublicKey.pk.h[:]...)
|
||||
b = append(b, sk.z...)
|
||||
|
||||
return b
|
||||
}
|
||||
|
||||
// PrivateKeyFromBytes deserializes a byte serialized PrivateKey.
|
||||
func (p *ParameterSet) PrivateKeyFromBytes(b []byte) (*PrivateKey, error) {
|
||||
if len(b) != p.secretKeySize {
|
||||
return nil, ErrInvalidKeySize
|
||||
}
|
||||
|
||||
sk := new(PrivateKey)
|
||||
sk.sk = new(indcpaSecretKey)
|
||||
sk.z = make([]byte, SymSize)
|
||||
sk.PublicKey.pk = new(indcpaPublicKey)
|
||||
sk.PublicKey.p = p
|
||||
|
||||
// De-serialize the public key first.
|
||||
off := p.indcpaSecretKeySize
|
||||
if err := sk.PublicKey.pk.fromBytes(p, b[off:off+p.publicKeySize]); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
off += p.publicKeySize
|
||||
if !bytes.Equal(sk.PublicKey.pk.h[:], b[off:off+SymSize]) {
|
||||
return nil, ErrInvalidPrivateKey
|
||||
}
|
||||
off += SymSize
|
||||
copy(sk.z, b[off:])
|
||||
|
||||
// Then go back to de-serialize the private key.
|
||||
if err := sk.sk.fromBytes(p, b[:p.indcpaSecretKeySize]); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return sk, nil
|
||||
}
|
||||
|
||||
// PublicKey is a Kyber public key.
|
||||
type PublicKey struct {
|
||||
pk *indcpaPublicKey
|
||||
p *ParameterSet
|
||||
}
|
||||
|
||||
// Bytes returns the byte serialization of a PublicKey.
|
||||
func (pk *PublicKey) Bytes() []byte {
|
||||
return pk.pk.toBytes()
|
||||
}
|
||||
|
||||
// PublicKeyFromBytes deserializes a byte serialized PublicKey.
|
||||
func (p *ParameterSet) PublicKeyFromBytes(b []byte) (*PublicKey, error) {
|
||||
pk := &PublicKey{
|
||||
pk: new(indcpaPublicKey),
|
||||
p: p,
|
||||
}
|
||||
|
||||
if err := pk.pk.fromBytes(p, b); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return pk, nil
|
||||
}
|
||||
|
||||
// GenerateKeyPair generates a private and public key parameterized with the
|
||||
// given ParameterSet.
|
||||
func (p *ParameterSet) GenerateKeyPair(rng io.Reader) (*PublicKey, *PrivateKey, error) {
|
||||
kp := new(PrivateKey)
|
||||
|
||||
var err error
|
||||
if kp.PublicKey.pk, kp.sk, err = p.indcpaKeyPair(rng); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
kp.PublicKey.p = p
|
||||
kp.z = make([]byte, SymSize)
|
||||
if _, err := io.ReadFull(rng, kp.z); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
return &kp.PublicKey, kp, nil
|
||||
}
|
||||
|
||||
// KEMEncrypt generates cipher text and shared secret via the CCA-secure Kyber
|
||||
// key encapsulation mechanism.
|
||||
func (pk *PublicKey) KEMEncrypt(rng io.Reader) (cipherText []byte, sharedSecret []byte, err error) {
|
||||
var buf [SymSize]byte
|
||||
if _, err = io.ReadFull(rng, buf[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
buf = sha3.Sum256(buf[:]) // Don't release system RNG output
|
||||
|
||||
hKr := sha3.New512()
|
||||
hKr.Write(buf[:])
|
||||
hKr.Write(pk.pk.h[:]) // Multitarget countermeasures for coins + contributory KEM
|
||||
kr := hKr.Sum(nil)
|
||||
|
||||
cipherText = make([]byte, pk.p.cipherTextSize)
|
||||
pk.p.indcpaEncrypt(cipherText, buf[:], pk.pk, kr[SymSize:]) // coins are in kr[SymSize:]
|
||||
|
||||
hc := sha3.Sum256(cipherText)
|
||||
copy(kr[SymSize:], hc[:]) // overwrite coins in kr with H(c)
|
||||
hSs := sha3.New256()
|
||||
hSs.Write(kr)
|
||||
sharedSecret = hSs.Sum(nil) // hash concatenation of pre-k and H(c) to k
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KEMDecrypt generates shared secret for given cipher text via the CCA-secure
|
||||
// Kyber key encapsulation mechanism.
|
||||
//
|
||||
// On failures, sharedSecret will contain a randomized value. Providing a
|
||||
// cipher text that is obviously malformed (too large/small) will result in a
|
||||
// panic.
|
||||
func (sk *PrivateKey) KEMDecrypt(cipherText []byte) (sharedSecret []byte) {
|
||||
var buf [2 * SymSize]byte
|
||||
|
||||
p := sk.PublicKey.p
|
||||
if len(cipherText) != p.CipherTextSize() {
|
||||
panic(ErrInvalidCipherTextSize)
|
||||
}
|
||||
p.indcpaDecrypt(buf[:SymSize], cipherText, sk.sk)
|
||||
|
||||
copy(buf[SymSize:], sk.PublicKey.pk.h[:]) // Multitarget countermeasure for coins + contributory KEM
|
||||
kr := sha3.Sum512(buf[:])
|
||||
|
||||
cmp := make([]byte, p.cipherTextSize)
|
||||
p.indcpaEncrypt(cmp, buf[:SymSize], sk.PublicKey.pk, kr[SymSize:]) // coins are in kr[SymSize:]
|
||||
|
||||
hc := sha3.Sum256(cipherText)
|
||||
copy(kr[SymSize:], hc[:]) // overwrite coins in kr with H(c)
|
||||
|
||||
fail := subtle.ConstantTimeSelect(subtle.ConstantTimeCompare(cipherText, cmp), 0, 1)
|
||||
subtle.ConstantTimeCopy(fail, kr[SymSize:], sk.z) // Overwrite pre-k with z on re-encryption failure
|
||||
|
||||
h := sha3.New256()
|
||||
h.Write(kr[:])
|
||||
sharedSecret = h.Sum(nil)
|
||||
|
||||
return
|
||||
}
|
||||
|
|
@ -0,0 +1,249 @@
|
|||
// kex.go - Kyber key exchange.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrInvalidMessageSize is the error thrown via a panic when a initator
|
||||
// or responder message is an invalid size.
|
||||
ErrInvalidMessageSize = errors.New("kyber: invalid message size")
|
||||
|
||||
// ErrParameterSetMismatch is the error thrown via a panic when there
|
||||
// is a mismatch between parameter sets.
|
||||
ErrParameterSetMismatch = errors.New("kyber: parameter set mismatch")
|
||||
)
|
||||
|
||||
// UAKEInitiatorMessageSize returns the size of the initiator UAKE message
|
||||
// in bytes.
|
||||
func (p *ParameterSet) UAKEInitiatorMessageSize() int {
|
||||
return p.PublicKeySize() + p.CipherTextSize()
|
||||
}
|
||||
|
||||
// UAKEResponderMessageSize returns the size of the responder UAKE message
|
||||
// in bytes.
|
||||
func (p *ParameterSet) UAKEResponderMessageSize() int {
|
||||
return p.CipherTextSize()
|
||||
}
|
||||
|
||||
// UAKEInitiatorState is a initiator UAKE instance. Each instance MUST only
|
||||
// be used for one key exchange and never reused.
|
||||
type UAKEInitiatorState struct {
|
||||
// Message is the UAKE message to send to the responder.
|
||||
Message []byte
|
||||
|
||||
eSk *PrivateKey
|
||||
tk []byte
|
||||
}
|
||||
|
||||
// Shared generates a shared secret for the given UAKE instance and responder
|
||||
// message.
|
||||
//
|
||||
// On failures, sharedSecret will contain a randomized value. Providing a
|
||||
// cipher text that is obviously malformed (too large/small) will result in a
|
||||
// panic.
|
||||
func (s *UAKEInitiatorState) Shared(recv []byte) (sharedSecret []byte) {
|
||||
xof := sha3.NewShake256()
|
||||
var tk []byte
|
||||
|
||||
tk = s.eSk.KEMDecrypt(recv)
|
||||
xof.Write(tk)
|
||||
xof.Write(s.tk)
|
||||
sharedSecret = make([]byte, SymSize)
|
||||
xof.Read(sharedSecret)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// NewUAKEInitiatorState creates a new initiator UAKE instance.
|
||||
func (pk *PublicKey) NewUAKEInitiatorState(rng io.Reader) (*UAKEInitiatorState, error) {
|
||||
s := new(UAKEInitiatorState)
|
||||
s.Message = make([]byte, 0, pk.p.UAKEInitiatorMessageSize())
|
||||
|
||||
var err error
|
||||
_, s.eSk, err = pk.p.GenerateKeyPair(rng)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
s.Message = append(s.Message, s.eSk.PublicKey.Bytes()...)
|
||||
|
||||
var ct []byte
|
||||
ct, s.tk, err = pk.KEMEncrypt(rng)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
s.Message = append(s.Message, ct...)
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// UAKEResponderShared generates a responder message and shared secret given
|
||||
// a initiator UAKE message.
|
||||
//
|
||||
// On failures, sharedSecret will contain a randomized value. Providing a
|
||||
// cipher text that is obviously malformed (too large/small) will result in a
|
||||
// panic.
|
||||
func (sk *PrivateKey) UAKEResponderShared(rng io.Reader, recv []byte) (message, sharedSecret []byte) {
|
||||
p := sk.PublicKey.p
|
||||
pkLen := p.PublicKeySize()
|
||||
|
||||
// Deserialize the peer's ephemeral public key.
|
||||
if len(recv) != p.UAKEInitiatorMessageSize() {
|
||||
panic(ErrInvalidMessageSize)
|
||||
}
|
||||
rawPk, ct := recv[:pkLen], recv[pkLen:]
|
||||
pk, err := p.PublicKeyFromBytes(rawPk)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
xof := sha3.NewShake256()
|
||||
var tk []byte
|
||||
|
||||
message, tk, err = pk.KEMEncrypt(rng)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
xof.Write(tk)
|
||||
|
||||
tk = sk.KEMDecrypt(ct)
|
||||
xof.Write(tk)
|
||||
sharedSecret = make([]byte, SymSize)
|
||||
xof.Read(sharedSecret)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// AKEInitiatorMessageSize returns the size of the initiator AKE message
|
||||
// in bytes.
|
||||
func (p *ParameterSet) AKEInitiatorMessageSize() int {
|
||||
return p.PublicKeySize() + p.CipherTextSize()
|
||||
}
|
||||
|
||||
// AKEResponderMessageSize returns the size of the responder AKE message
|
||||
// in bytes.
|
||||
func (p *ParameterSet) AKEResponderMessageSize() int {
|
||||
return 2 * p.CipherTextSize()
|
||||
}
|
||||
|
||||
// AKEInitiatorState is a initiator AKE instance. Each instance MUST only be
|
||||
// used for one key exchange and never reused.
|
||||
type AKEInitiatorState struct {
|
||||
// Message is the AKE message to send to the responder.
|
||||
Message []byte
|
||||
|
||||
eSk *PrivateKey
|
||||
tk []byte
|
||||
}
|
||||
|
||||
// Shared generates a shared secret for the given AKE instance, responder
|
||||
// message, and long term initiator private key.
|
||||
//
|
||||
// On failures sharedSecret will contain a randomized value. Providing a
|
||||
// malformed responder message, or a private key that uses a different
|
||||
// ParamterSet than the AKEInitiatorState will result in a panic.
|
||||
func (s *AKEInitiatorState) Shared(recv []byte, initiatorPrivateKey *PrivateKey) (sharedSecret []byte) {
|
||||
p := s.eSk.PublicKey.p
|
||||
|
||||
if initiatorPrivateKey.PublicKey.p != p {
|
||||
panic(ErrParameterSetMismatch)
|
||||
}
|
||||
if len(recv) != p.AKEResponderMessageSize() {
|
||||
panic(ErrInvalidMessageSize)
|
||||
}
|
||||
ctLen := p.CipherTextSize()
|
||||
|
||||
xof := sha3.NewShake256()
|
||||
var tk []byte
|
||||
|
||||
tk = s.eSk.KEMDecrypt(recv[:ctLen])
|
||||
xof.Write(tk)
|
||||
|
||||
tk = initiatorPrivateKey.KEMDecrypt(recv[ctLen:])
|
||||
xof.Write(tk)
|
||||
|
||||
xof.Write(s.tk)
|
||||
sharedSecret = make([]byte, SymSize)
|
||||
xof.Read(sharedSecret)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// NewAKEInitiatorState creates a new initiator AKE instance.
|
||||
func (pk *PublicKey) NewAKEInitiatorState(rng io.Reader) (*AKEInitiatorState, error) {
|
||||
s := new(AKEInitiatorState)
|
||||
|
||||
// This is identical to the UAKE case, so just reuse the code.
|
||||
us, err := pk.NewUAKEInitiatorState(rng)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
s.Message = us.Message
|
||||
s.eSk = us.eSk
|
||||
s.tk = us.tk
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// AKEResponderShared generates a responder message and shared secret given
|
||||
// a initiator AKE message and long term initiator public key.
|
||||
//
|
||||
// On failures sharedSecret will contain a randomized value. Providing a
|
||||
// malformed responder message, or a private key that uses a different
|
||||
// ParamterSet than the AKEInitiatorState will result in a panic.
|
||||
func (sk *PrivateKey) AKEResponderShared(rng io.Reader, recv []byte, peerPublicKey *PublicKey) (message, sharedSecret []byte) {
|
||||
p := sk.PublicKey.p
|
||||
pkLen := p.PublicKeySize()
|
||||
|
||||
if peerPublicKey.p != p {
|
||||
panic(ErrParameterSetMismatch)
|
||||
}
|
||||
|
||||
// Deserialize the peer's ephemeral public key.
|
||||
if len(recv) != p.AKEInitiatorMessageSize() {
|
||||
panic(ErrInvalidMessageSize)
|
||||
}
|
||||
rawPk, ct := recv[:pkLen], recv[pkLen:]
|
||||
pk, err := p.PublicKeyFromBytes(rawPk)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
message = make([]byte, 0, p.AKEResponderMessageSize())
|
||||
|
||||
xof := sha3.NewShake256()
|
||||
var tk, tmp []byte
|
||||
|
||||
tmp, tk, err = pk.KEMEncrypt(rng)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
xof.Write(tk)
|
||||
message = append(message, tmp...)
|
||||
|
||||
tmp, tk, err = peerPublicKey.KEMEncrypt(rng)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
xof.Write(tk)
|
||||
message = append(message, tmp...)
|
||||
|
||||
tk = sk.KEMDecrypt(ct)
|
||||
xof.Write(tk)
|
||||
sharedSecret = make([]byte, SymSize)
|
||||
xof.Read(sharedSecret)
|
||||
|
||||
return
|
||||
}
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
// ntt.go - Number-Theoretic Transform.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
// Computes negacyclic number-theoretic transform (NTT) of a polynomial (vector
|
||||
// of 256 coefficients) in place; inputs assumed to be in normal order, output
|
||||
// in bitreversed order.
|
||||
func nttRef(p *[kyberN]uint16) {
|
||||
var j int
|
||||
k := 1
|
||||
for level := 7; level >= 0; level-- {
|
||||
distance := 1 << uint(level)
|
||||
for start := 0; start < kyberN; start = j + distance {
|
||||
zeta := zetas[k]
|
||||
k++
|
||||
for j = start; j < start+distance; j++ {
|
||||
t := montgomeryReduce(uint32(zeta) * uint32(p[j+distance]))
|
||||
p[j+distance] = barrettReduce(p[j] + 4*kyberQ - t)
|
||||
|
||||
if level&1 == 1 { // odd level
|
||||
p[j] = p[j] + t // Omit reduction (be lazy)
|
||||
} else {
|
||||
p[j] = barrettReduce(p[j] + t)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Computes inverse of negacyclic number-theoretic transform (NTT) of a
|
||||
// polynomial (vector of 256 coefficients) in place; inputs assumed to be in
|
||||
// bitreversed order, output in normal order.
|
||||
func invnttRef(a *[kyberN]uint16) {
|
||||
for level := 0; level < 8; level++ {
|
||||
distance := 1 << uint(level)
|
||||
for start := 0; start < distance; start++ {
|
||||
var jTwiddle int
|
||||
for j := start; j < kyberN-1; j += 2 * distance {
|
||||
w := uint32(omegasInvBitrevMontgomery[jTwiddle])
|
||||
jTwiddle++
|
||||
|
||||
temp := a[j]
|
||||
|
||||
if level&1 == 1 { // odd level
|
||||
a[j] = barrettReduce(temp + a[j+distance])
|
||||
} else {
|
||||
a[j] = temp + a[j+distance] // Omit reduction (be lazy)
|
||||
}
|
||||
|
||||
t := w * (uint32(temp) + 4*kyberQ - uint32(a[j+distance]))
|
||||
|
||||
a[j+distance] = montgomeryReduce(t)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for i, v := range psisInvMontgomery {
|
||||
a[i] = montgomeryReduce(uint32(a[i]) * uint32(v))
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,116 @@
|
|||
// params.go - Kyber parameterization.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
const (
|
||||
// SymSize is the size of the shared key (and certain internal parameters
|
||||
// such as hashes and seeds) in bytes.
|
||||
SymSize = 32
|
||||
|
||||
kyberN = 256
|
||||
kyberQ = 7681
|
||||
|
||||
polySize = 416
|
||||
polyCompressedSize = 96
|
||||
|
||||
compressedCoeffSize = 352
|
||||
)
|
||||
|
||||
var (
|
||||
// Kyber512 is the Kyber-512 parameter set, which aims to provide security
|
||||
// equivalent to AES-128.
|
||||
//
|
||||
// This parameter set has a 1632 byte private key, 736 byte public key,
|
||||
// and a 800 byte cipher text.
|
||||
Kyber512 = newParameterSet("Kyber-512", 2)
|
||||
|
||||
// Kyber768 is the Kyber-768 parameter set, which aims to provide security
|
||||
// equivalent to AES-192.
|
||||
//
|
||||
// This parameter set has a 2400 byte private key, 1088 byte public key,
|
||||
// and a 1152 byte cipher text.
|
||||
Kyber768 = newParameterSet("Kyber-768", 3)
|
||||
|
||||
// Kyber1024 is the Kyber-1024 parameter set, which aims to provide
|
||||
// security equivalent to AES-256.
|
||||
//
|
||||
// This parameter set has a 3168 byte private key, 1440 byte public key,
|
||||
// and a 1504 byte cipher text.
|
||||
Kyber1024 = newParameterSet("Kyber-1024", 4)
|
||||
)
|
||||
|
||||
// ParameterSet is a Kyber parameter set.
|
||||
type ParameterSet struct {
|
||||
name string
|
||||
|
||||
k int
|
||||
eta int
|
||||
|
||||
polyVecSize int
|
||||
polyVecCompressedSize int
|
||||
|
||||
indcpaMsgSize int
|
||||
indcpaPublicKeySize int
|
||||
indcpaSecretKeySize int
|
||||
indcpaSize int
|
||||
|
||||
publicKeySize int
|
||||
secretKeySize int
|
||||
cipherTextSize int
|
||||
}
|
||||
|
||||
// Name returns the name of a given ParameterSet.
|
||||
func (p *ParameterSet) Name() string {
|
||||
return p.name
|
||||
}
|
||||
|
||||
// PublicKeySize returns the size of a public key in bytes.
|
||||
func (p *ParameterSet) PublicKeySize() int {
|
||||
return p.publicKeySize
|
||||
}
|
||||
|
||||
// PrivateKeySize returns the size of a private key in bytes.
|
||||
func (p *ParameterSet) PrivateKeySize() int {
|
||||
return p.secretKeySize
|
||||
}
|
||||
|
||||
// CipherTextSize returns the size of a cipher text in bytes.
|
||||
func (p *ParameterSet) CipherTextSize() int {
|
||||
return p.cipherTextSize
|
||||
}
|
||||
|
||||
func newParameterSet(name string, k int) *ParameterSet {
|
||||
var p ParameterSet
|
||||
|
||||
p.name = name
|
||||
p.k = k
|
||||
switch k {
|
||||
case 2:
|
||||
p.eta = 5
|
||||
case 3:
|
||||
p.eta = 4
|
||||
case 4:
|
||||
p.eta = 3
|
||||
default:
|
||||
panic("kyber: k must be in {2,3,4}")
|
||||
}
|
||||
|
||||
p.polyVecSize = k * polySize
|
||||
p.polyVecCompressedSize = k * compressedCoeffSize
|
||||
|
||||
p.indcpaMsgSize = SymSize
|
||||
p.indcpaPublicKeySize = p.polyVecCompressedSize + SymSize
|
||||
p.indcpaSecretKeySize = p.polyVecSize
|
||||
p.indcpaSize = p.polyVecCompressedSize + polyCompressedSize
|
||||
|
||||
p.publicKeySize = p.indcpaPublicKeySize
|
||||
p.secretKeySize = p.indcpaSecretKeySize + p.indcpaPublicKeySize + 2*SymSize // 32 bytes of additional space to save H(pk)
|
||||
p.cipherTextSize = p.indcpaSize
|
||||
|
||||
return &p
|
||||
}
|
||||
|
|
@ -0,0 +1,146 @@
|
|||
// poly.go - Kyber polynomial.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
import "golang.org/x/crypto/sha3"
|
||||
|
||||
// Elements of R_q = Z_q[X]/(X^n + 1). Represents polynomial coeffs[0] +
|
||||
// X*coeffs[1] + X^2*xoeffs[2] + ... + X^{n-1}*coeffs[n-1].
|
||||
type poly struct {
|
||||
coeffs [kyberN]uint16
|
||||
}
|
||||
|
||||
// Compression and subsequent serialization of a polynomial.
|
||||
func (p *poly) compress(r []byte) {
|
||||
var t [8]uint32
|
||||
|
||||
for i, k := 0, 0; i < kyberN; i, k = i+8, k+3 {
|
||||
for j := 0; j < 8; j++ {
|
||||
t[j] = uint32((((freeze(p.coeffs[i+j]) << 3) + kyberQ/2) / kyberQ) & 7)
|
||||
}
|
||||
|
||||
r[k] = byte(t[0] | (t[1] << 3) | (t[2] << 6))
|
||||
r[k+1] = byte((t[2] >> 2) | (t[3] << 1) | (t[4] << 4) | (t[5] << 7))
|
||||
r[k+2] = byte((t[5] >> 1) | (t[6] << 2) | (t[7] << 5))
|
||||
}
|
||||
}
|
||||
|
||||
// De-serialization and subsequent decompression of a polynomial; approximate
|
||||
// inverse of poly.compress().
|
||||
func (p *poly) decompress(a []byte) {
|
||||
for i, off := 0, 0; i < kyberN; i, off = i+8, off+3 {
|
||||
p.coeffs[i+0] = ((uint16(a[off]&7) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+1] = (((uint16(a[off]>>3) & 7) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+2] = (((uint16(a[off]>>6) | (uint16(a[off+1]<<2) & 4)) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+3] = (((uint16(a[off+1]>>1) & 7) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+4] = (((uint16(a[off+1]>>4) & 7) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+5] = (((uint16(a[off+1]>>7) | (uint16(a[off+2]<<1) & 6)) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+6] = (((uint16(a[off+2]>>2) & 7) * kyberQ) + 4) >> 3
|
||||
p.coeffs[i+7] = (((uint16(a[off+2] >> 5)) * kyberQ) + 4) >> 3
|
||||
}
|
||||
}
|
||||
|
||||
// Serialization of a polynomial.
|
||||
func (p *poly) toBytes(r []byte) {
|
||||
var t [8]uint16
|
||||
|
||||
for i := 0; i < kyberN/8; i++ {
|
||||
for j := 0; j < 8; j++ {
|
||||
t[j] = freeze(p.coeffs[8*i+j])
|
||||
}
|
||||
|
||||
r[13*i+0] = byte(t[0] & 0xff)
|
||||
r[13*i+1] = byte((t[0] >> 8) | ((t[1] & 0x07) << 5))
|
||||
r[13*i+2] = byte((t[1] >> 3) & 0xff)
|
||||
r[13*i+3] = byte((t[1] >> 11) | ((t[2] & 0x3f) << 2))
|
||||
r[13*i+4] = byte((t[2] >> 6) | ((t[3] & 0x01) << 7))
|
||||
r[13*i+5] = byte((t[3] >> 1) & 0xff)
|
||||
r[13*i+6] = byte((t[3] >> 9) | ((t[4] & 0x0f) << 4))
|
||||
r[13*i+7] = byte((t[4] >> 4) & 0xff)
|
||||
r[13*i+8] = byte((t[4] >> 12) | ((t[5] & 0x7f) << 1))
|
||||
r[13*i+9] = byte((t[5] >> 7) | ((t[6] & 0x03) << 6))
|
||||
r[13*i+10] = byte((t[6] >> 2) & 0xff)
|
||||
r[13*i+11] = byte((t[6] >> 10) | ((t[7] & 0x1f) << 3))
|
||||
r[13*i+12] = byte(t[7] >> 5)
|
||||
}
|
||||
}
|
||||
|
||||
// De-serialization of a polynomial; inverse of poly.toBytes().
|
||||
func (p *poly) fromBytes(a []byte) {
|
||||
for i := 0; i < kyberN/8; i++ {
|
||||
p.coeffs[8*i+0] = uint16(a[13*i+0]) | ((uint16(a[13*i+1]) & 0x1f) << 8)
|
||||
p.coeffs[8*i+1] = (uint16(a[13*i+1]) >> 5) | (uint16(a[13*i+2]) << 3) | ((uint16(a[13*i+3]) & 0x03) << 11)
|
||||
p.coeffs[8*i+2] = (uint16(a[13*i+3]) >> 2) | ((uint16(a[13*i+4]) & 0x7f) << 6)
|
||||
p.coeffs[8*i+3] = (uint16(a[13*i+4]) >> 7) | (uint16(a[13*i+5]) << 1) | ((uint16(a[13*i+6]) & 0x0f) << 9)
|
||||
p.coeffs[8*i+4] = (uint16(a[13*i+6]) >> 4) | (uint16(a[13*i+7]) << 4) | ((uint16(a[13*i+8]) & 0x01) << 12)
|
||||
p.coeffs[8*i+5] = (uint16(a[13*i+8]) >> 1) | ((uint16(a[13*i+9]) & 0x3f) << 7)
|
||||
p.coeffs[8*i+6] = (uint16(a[13*i+9]) >> 6) | (uint16(a[13*i+10]) << 2) | ((uint16(a[13*i+11]) & 0x07) << 10)
|
||||
p.coeffs[8*i+7] = (uint16(a[13*i+11]) >> 3) | (uint16(a[13*i+12]) << 5)
|
||||
}
|
||||
}
|
||||
|
||||
// Convert 32-byte message to polynomial.
|
||||
func (p *poly) fromMsg(msg []byte) {
|
||||
for i, v := range msg[:SymSize] {
|
||||
for j := 0; j < 8; j++ {
|
||||
mask := -((uint16(v) >> uint(j)) & 1)
|
||||
p.coeffs[8*i+j] = mask & ((kyberQ + 1) / 2)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Convert polynomial to 32-byte message.
|
||||
func (p *poly) toMsg(msg []byte) {
|
||||
for i := 0; i < SymSize; i++ {
|
||||
msg[i] = 0
|
||||
for j := 0; j < 8; j++ {
|
||||
t := (((freeze(p.coeffs[8*i+j]) << 1) + kyberQ/2) / kyberQ) & 1
|
||||
msg[i] |= byte(t << uint(j))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Sample a polynomial deterministically from a seed and a nonce, with output
|
||||
// polynomial close to centered binomial distribution with parameter eta.
|
||||
func (p *poly) getNoise(seed []byte, nonce byte, eta int) {
|
||||
extSeed := make([]byte, 0, SymSize+1)
|
||||
extSeed = append(extSeed, seed...)
|
||||
extSeed = append(extSeed, nonce)
|
||||
|
||||
buf := make([]byte, eta*kyberN/4)
|
||||
sha3.ShakeSum256(buf, extSeed)
|
||||
|
||||
p.cbd(buf, eta)
|
||||
}
|
||||
|
||||
// Computes negacyclic number-theoretic transform (NTT) of a polynomial in
|
||||
// place; inputs assumed to be in normal order, output in bitreversed order.
|
||||
func (p *poly) ntt() {
|
||||
hardwareAccelImpl.nttFn(&p.coeffs)
|
||||
}
|
||||
|
||||
// Computes inverse of negacyclic number-theoretic transform (NTT) of a
|
||||
// polynomial in place; inputs assumed to be in bitreversed order, output in
|
||||
// normal order.
|
||||
func (p *poly) invntt() {
|
||||
hardwareAccelImpl.invnttFn(&p.coeffs)
|
||||
}
|
||||
|
||||
// Add two polynomials.
|
||||
func (p *poly) add(a, b *poly) {
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = barrettReduce(a.coeffs[i] + b.coeffs[i])
|
||||
}
|
||||
}
|
||||
|
||||
// Subtract two polynomials.
|
||||
func (p *poly) sub(a, b *poly) {
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = barrettReduce(a.coeffs[i] + 3*kyberQ - b.coeffs[i])
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,115 @@
|
|||
// polyvec.go - Vector of Kyber polynomials.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
type polyVec struct {
|
||||
vec []*poly
|
||||
}
|
||||
|
||||
// Compress and serialize vector of polynomials.
|
||||
func (v *polyVec) compress(r []byte) {
|
||||
var off int
|
||||
for _, vec := range v.vec {
|
||||
for j := 0; j < kyberN/8; j++ {
|
||||
var t [8]uint16
|
||||
for k := 0; k < 8; k++ {
|
||||
t[k] = uint16((((uint32(freeze(vec.coeffs[8*j+k])) << 11) + kyberQ/2) / kyberQ) & 0x7ff)
|
||||
}
|
||||
|
||||
r[off+11*j+0] = byte(t[0] & 0xff)
|
||||
r[off+11*j+1] = byte((t[0] >> 8) | ((t[1] & 0x1f) << 3))
|
||||
r[off+11*j+2] = byte((t[1] >> 5) | ((t[2] & 0x03) << 6))
|
||||
r[off+11*j+3] = byte((t[2] >> 2) & 0xff)
|
||||
r[off+11*j+4] = byte((t[2] >> 10) | ((t[3] & 0x7f) << 1))
|
||||
r[off+11*j+5] = byte((t[3] >> 7) | ((t[4] & 0x0f) << 4))
|
||||
r[off+11*j+6] = byte((t[4] >> 4) | ((t[5] & 0x01) << 7))
|
||||
r[off+11*j+7] = byte((t[5] >> 1) & 0xff)
|
||||
r[off+11*j+8] = byte((t[5] >> 9) | ((t[6] & 0x3f) << 2))
|
||||
r[off+11*j+9] = byte((t[6] >> 6) | ((t[7] & 0x07) << 5))
|
||||
r[off+11*j+10] = byte((t[7] >> 3))
|
||||
}
|
||||
off += compressedCoeffSize
|
||||
}
|
||||
}
|
||||
|
||||
// De-serialize and decompress vector of polynomials; approximate inverse of
|
||||
// polyVec.compress().
|
||||
func (v *polyVec) decompress(a []byte) {
|
||||
var off int
|
||||
for _, vec := range v.vec {
|
||||
for j := 0; j < kyberN/8; j++ {
|
||||
vec.coeffs[8*j+0] = uint16((((uint32(a[off+11*j+0]) | ((uint32(a[off+11*j+1]) & 0x07) << 8)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+1] = uint16(((((uint32(a[off+11*j+1]) >> 3) | ((uint32(a[off+11*j+2]) & 0x3f) << 5)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+2] = uint16(((((uint32(a[off+11*j+2]) >> 6) | ((uint32(a[off+11*j+3]) & 0xff) << 2) | ((uint32(a[off+11*j+4]) & 0x01) << 10)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+3] = uint16(((((uint32(a[off+11*j+4]) >> 1) | ((uint32(a[off+11*j+5]) & 0x0f) << 7)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+4] = uint16(((((uint32(a[off+11*j+5]) >> 4) | ((uint32(a[off+11*j+6]) & 0x7f) << 4)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+5] = uint16(((((uint32(a[off+11*j+6]) >> 7) | ((uint32(a[off+11*j+7]) & 0xff) << 1) | ((uint32(a[off+11*j+8]) & 0x03) << 9)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+6] = uint16(((((uint32(a[off+11*j+8]) >> 2) | ((uint32(a[off+11*j+9]) & 0x1f) << 6)) * kyberQ) + 1024) >> 11)
|
||||
vec.coeffs[8*j+7] = uint16(((((uint32(a[off+11*j+9]) >> 5) | ((uint32(a[off+11*j+10]) & 0xff) << 3)) * kyberQ) + 1024) >> 11)
|
||||
}
|
||||
off += compressedCoeffSize
|
||||
}
|
||||
}
|
||||
|
||||
// Serialize vector of polynomials.
|
||||
func (v *polyVec) toBytes(r []byte) {
|
||||
for i, p := range v.vec {
|
||||
p.toBytes(r[i*polySize:])
|
||||
}
|
||||
}
|
||||
|
||||
// De-serialize vector of polynomials; inverse of polyVec.toBytes().
|
||||
func (v *polyVec) fromBytes(a []byte) {
|
||||
for i, p := range v.vec {
|
||||
p.fromBytes(a[i*polySize:])
|
||||
}
|
||||
}
|
||||
|
||||
// Apply forward NTT to all elements of a vector of polynomials.
|
||||
func (v *polyVec) ntt() {
|
||||
for _, p := range v.vec {
|
||||
p.ntt()
|
||||
}
|
||||
}
|
||||
|
||||
// Apply inverse NTT to all elements of a vector of polynomials.
|
||||
func (v *polyVec) invntt() {
|
||||
for _, p := range v.vec {
|
||||
p.invntt()
|
||||
}
|
||||
}
|
||||
|
||||
// Pointwise multiply elements of a and b and accumulate into p.
|
||||
func (p *poly) pointwiseAcc(a, b *polyVec) {
|
||||
hardwareAccelImpl.pointwiseAccFn(p, a, b)
|
||||
}
|
||||
|
||||
// Add vectors of polynomials.
|
||||
func (v *polyVec) add(a, b *polyVec) {
|
||||
for i, p := range v.vec {
|
||||
p.add(a.vec[i], b.vec[i])
|
||||
}
|
||||
}
|
||||
|
||||
// Get compressed and serialized size in bytes.
|
||||
func (v *polyVec) compressedSize() int {
|
||||
return len(v.vec) * compressedCoeffSize
|
||||
}
|
||||
|
||||
func pointwiseAccRef(p *poly, a, b *polyVec) {
|
||||
for j := 0; j < kyberN; j++ {
|
||||
t := montgomeryReduce(4613 * uint32(b.vec[0].coeffs[j])) // 4613 = 2^{2*18} % q
|
||||
p.coeffs[j] = montgomeryReduce(uint32(a.vec[0].coeffs[j]) * uint32(t))
|
||||
for i := 1; i < len(a.vec); i++ { // len(a.vec) == kyberK
|
||||
t = montgomeryReduce(4613 * uint32(b.vec[i].coeffs[j]))
|
||||
p.coeffs[j] += montgomeryReduce(uint32(a.vec[i].coeffs[j]) * uint32(t))
|
||||
}
|
||||
|
||||
p.coeffs[j] = barrettReduce(p.coeffs[j])
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,87 @@
|
|||
// precomp.go - Precomputed NTT constants.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
// Precomputed constants for the forward NTT and inverse NTT.
|
||||
// Computed using Pari/GP as follows:
|
||||
//
|
||||
// brv=[0,128,64,192,32,160,96,224,16,144,80,208,48,176,112,240, \
|
||||
// 8,136,72,200,40,168,104,232,24,152,88,216,56,184,120,248, \
|
||||
// 4,132,68,196,36,164,100,228,20,148,84,212,52,180,116,244, \
|
||||
// 12,140,76,204,44,172,108,236,28,156,92,220,60,188,124,252, \
|
||||
// 2,130,66,194,34,162,98,226,18,146,82,210,50,178,114,242, \
|
||||
// 10,138,74,202,42,170,106,234,26,154,90,218,58,186,122,250, \
|
||||
// 6,134,70,198,38,166,102,230,22,150,86,214,54,182,118,246, \
|
||||
// 14,142,78,206,46,174,110,238,30,158,94,222,62,190,126,254, \
|
||||
// 1,129,65,193,33,161,97,225,17,145,81,209,49,177,113,241, \
|
||||
// 9,137,73,201,41,169,105,233,25,153,89,217,57,185,121,249, \
|
||||
// 5,133,69,197,37,165,101,229,21,149,85,213,53,181,117,245, \
|
||||
// 13,141,77,205,45,173,109,237,29,157,93,221,61,189,125,253, \
|
||||
// 3,131,67,195,35,163,99,227,19,147,83,211,51,179,115,243, \
|
||||
// 11,139,75,203,43,171,107,235,27,155,91,219,59,187,123,251, \
|
||||
// 7,135,71,199,39,167,103,231,23,151,87,215,55,183,119,247, \
|
||||
// 15,143,79,207,47,175,111,239,31,159,95,223,63,191,127,255];
|
||||
//
|
||||
// q = 7681;
|
||||
// n = 256;
|
||||
// mont = Mod(2^18,q);
|
||||
//
|
||||
// g=0; for(i=2,q-1,if(znorder(Mod(i,q)) == 2*n, g=Mod(i,q); break))
|
||||
//
|
||||
// zetas = lift(vector(n, i, g^(brv[i])*mont))
|
||||
// omegas_inv_bitrev_montgomery = lift(vector(n/2, i, (g^2)^(-brv[2*(i-1)+1])*mont))
|
||||
// psis_inv_montgomery = lift(vector(n, i, g^(-(i-1))/n*mont))
|
||||
|
||||
var zetas = [kyberN]uint16{
|
||||
990, 7427, 2634, 6819, 578, 3281, 2143, 1095, 484, 6362, 3336, 5382, 6086, 3823, 877, 5656,
|
||||
3583, 7010, 6414, 263, 1285, 291, 7143, 7338, 1581, 5134, 5184, 5932, 4042, 5775, 2468, 3,
|
||||
606, 729, 5383, 962, 3240, 7548, 5129, 7653, 5929, 4965, 2461, 641, 1584, 2666, 1142, 157,
|
||||
7407, 5222, 5602, 5142, 6140, 5485, 4931, 1559, 2085, 5284, 2056, 3538, 7269, 3535, 7190, 1957,
|
||||
3465, 6792, 1538, 4664, 2023, 7643, 3660, 7673, 1694, 6905, 3995, 3475, 5939, 1859, 6910, 4434,
|
||||
1019, 1492, 7087, 4761, 657, 4859, 5798, 2640, 1693, 2607, 2782, 5400, 6466, 1010, 957, 3851,
|
||||
2121, 6392, 7319, 3367, 3659, 3375, 6430, 7583, 1549, 5856, 4773, 6084, 5544, 1650, 3997, 4390,
|
||||
6722, 2915, 4245, 2635, 6128, 7676, 5737, 1616, 3457, 3132, 7196, 4702, 6239, 851, 2122, 3009,
|
||||
7613, 7295, 2007, 323, 5112, 3716, 2289, 6442, 6965, 2713, 7126, 3401, 963, 6596, 607, 5027,
|
||||
7078, 4484, 5937, 944, 2860, 2680, 5049, 1777, 5850, 3387, 6487, 6777, 4812, 4724, 7077, 186,
|
||||
6848, 6793, 3463, 5877, 1174, 7116, 3077, 5945, 6591, 590, 6643, 1337, 6036, 3991, 1675, 2053,
|
||||
6055, 1162, 1679, 3883, 4311, 2106, 6163, 4486, 6374, 5006, 4576, 4288, 5180, 4102, 282, 6119,
|
||||
7443, 6330, 3184, 4971, 2530, 5325, 4171, 7185, 5175, 5655, 1898, 382, 7211, 43, 5965, 6073,
|
||||
1730, 332, 1577, 3304, 2329, 1699, 6150, 2379, 5113, 333, 3502, 4517, 1480, 1172, 5567, 651,
|
||||
925, 4573, 599, 1367, 4109, 1863, 6929, 1605, 3866, 2065, 4048, 839, 5764, 2447, 2022, 3345,
|
||||
1990, 4067, 2036, 2069, 3567, 7371, 2368, 339, 6947, 2159, 654, 7327, 2768, 6676, 987, 2214,
|
||||
}
|
||||
|
||||
var omegasInvBitrevMontgomery = [kyberN / 2]uint16{
|
||||
990, 254, 862, 5047, 6586, 5538, 4400, 7103, 2025, 6804, 3858, 1595, 2299, 4345, 1319, 7197,
|
||||
7678, 5213, 1906, 3639, 1749, 2497, 2547, 6100, 343, 538, 7390, 6396, 7418, 1267, 671, 4098,
|
||||
5724, 491, 4146, 412, 4143, 5625, 2397, 5596, 6122, 2750, 2196, 1541, 2539, 2079, 2459, 274,
|
||||
7524, 6539, 5015, 6097, 7040, 5220, 2716, 1752, 28, 2552, 133, 4441, 6719, 2298, 6952, 7075,
|
||||
4672, 5559, 6830, 1442, 2979, 485, 4549, 4224, 6065, 1944, 5, 1553, 5046, 3436, 4766, 959,
|
||||
3291, 3684, 6031, 2137, 1597, 2908, 1825, 6132, 98, 1251, 4306, 4022, 4314, 362, 1289, 5560,
|
||||
3830, 6724, 6671, 1215, 2281, 4899, 5074, 5988, 5041, 1883, 2822, 7024, 2920, 594, 6189, 6662,
|
||||
3247, 771, 5822, 1742, 4206, 3686, 776, 5987, 8, 4021, 38, 5658, 3017, 6143, 889, 4216,
|
||||
}
|
||||
|
||||
var psisInvMontgomery = [kyberN]uint16{
|
||||
1024, 4972, 5779, 6907, 4943, 4168, 315, 5580, 90, 497, 1123, 142, 4710, 5527, 2443, 4871,
|
||||
698, 2489, 2394, 4003, 684, 2241, 2390, 7224, 5072, 2064, 4741, 1687, 6841, 482, 7441, 1235,
|
||||
2126, 4742, 2802, 5744, 6287, 4933, 699, 3604, 1297, 2127, 5857, 1705, 3868, 3779, 4397, 2177,
|
||||
159, 622, 2240, 1275, 640, 6948, 4572, 5277, 209, 2605, 1157, 7328, 5817, 3191, 1662, 2009,
|
||||
4864, 574, 2487, 164, 6197, 4436, 7257, 3462, 4268, 4281, 3414, 4515, 3170, 1290, 2003, 5855,
|
||||
7156, 6062, 7531, 1732, 3249, 4884, 7512, 3590, 1049, 2123, 1397, 6093, 3691, 6130, 6541, 3946,
|
||||
6258, 3322, 1788, 4241, 4900, 2309, 1400, 1757, 400, 502, 6698, 2338, 3011, 668, 7444, 4580,
|
||||
6516, 6795, 2959, 4136, 3040, 2279, 6355, 3943, 2913, 6613, 7416, 4084, 6508, 5556, 4054, 3782,
|
||||
61, 6567, 2212, 779, 632, 5709, 5667, 4923, 4911, 6893, 4695, 4164, 3536, 2287, 7594, 2848,
|
||||
3267, 1911, 3128, 546, 1991, 156, 4958, 5531, 6903, 483, 875, 138, 250, 2234, 2266, 7222,
|
||||
2842, 4258, 812, 6703, 232, 5207, 6650, 2585, 1900, 6225, 4932, 7265, 4701, 3173, 4635, 6393,
|
||||
227, 7313, 4454, 4284, 6759, 1224, 5223, 1447, 395, 2608, 4502, 4037, 189, 3348, 54, 6443,
|
||||
2210, 6230, 2826, 1780, 3002, 5995, 1955, 6102, 6045, 3938, 5019, 4417, 1434, 1262, 1507, 5847,
|
||||
5917, 7157, 7177, 6434, 7537, 741, 4348, 1309, 145, 374, 2236, 4496, 5028, 6771, 6923, 7421,
|
||||
1978, 1023, 3857, 6876, 1102, 7451, 4704, 6518, 1344, 765, 384, 5705, 1207, 1630, 4734, 1563,
|
||||
6839, 5933, 1954, 4987, 7142, 5814, 7527, 4953, 7637, 4707, 2182, 5734, 2818, 541, 4097, 5641,
|
||||
}
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
// reduce.go - Montgomery, Barret, and Full reduction.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to the software, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package kyber
|
||||
|
||||
const (
|
||||
qinv = 7679 // -inverse_mod(q,2^18)
|
||||
rlog = 18
|
||||
)
|
||||
|
||||
// Montgomery reduction; given a 32-bit integer a, computes 16-bit integer
|
||||
// congruent to a * R^-1 mod q, where R=2^18 (see value of rlog).
|
||||
func montgomeryReduce(a uint32) uint16 {
|
||||
u := a * qinv
|
||||
u &= (1 << rlog) - 1
|
||||
u *= kyberQ
|
||||
a += u
|
||||
return uint16(a >> rlog)
|
||||
}
|
||||
|
||||
// Barrett reduction; given a 16-bit integer a, computes 16-bit integer
|
||||
// congruent to a mod q in {0,...,11768}.
|
||||
func barrettReduce(a uint16) uint16 {
|
||||
u := uint32(a >> 13) // ((uint32_t) a * sinv) >> 16
|
||||
u *= kyberQ
|
||||
a -= uint16(u)
|
||||
return a
|
||||
}
|
||||
|
||||
// Full reduction; given a 16-bit integer a, computes unsigned integer a mod q.
|
||||
func freeze(x uint16) uint16 {
|
||||
r := barrettReduce(x)
|
||||
|
||||
m := r - kyberQ
|
||||
c := int16(m)
|
||||
c >>= 15
|
||||
r = m ^ ((r ^ m) & uint16(c))
|
||||
return r
|
||||
}
|
||||
|
|
@ -0,0 +1,125 @@
|
|||
// MersenneTwister
|
||||
// From https://gist.github.com/cuixin/1b8b6bd7bfbde8fe76e8
|
||||
package MersenneTwister
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
|
||||
_ "crypto/sha512"
|
||||
)
|
||||
|
||||
const N = 312
|
||||
const M = 156
|
||||
const MATRIX_A = 0xB5026F5AA96619E9
|
||||
const UPPER_MASK = 0xFFFFFFFF80000000
|
||||
const LOWER_MASK = 0x7FFFFFFF
|
||||
|
||||
type MT19937_64 struct {
|
||||
array [N]uint64 //state vector
|
||||
index uint64 // array index
|
||||
}
|
||||
|
||||
func New() *MT19937_64 {
|
||||
return &MT19937_64{
|
||||
index: N + 1,
|
||||
}
|
||||
}
|
||||
|
||||
func (m *MT19937_64) _initstate() {
|
||||
// Recommendations abound that mtwist should throw away 1st 10000 or so
|
||||
// of initial state
|
||||
for i := 0; i < 10000; i++ {
|
||||
_ = m.Int63()
|
||||
}
|
||||
}
|
||||
|
||||
func (m *MT19937_64) Seed(seed int64) {
|
||||
m.array[0] = uint64(seed)
|
||||
for m.index = 1; m.index < N; m.index++ {
|
||||
m.array[m.index] = (6364136223846793005*(m.array[m.index-1]^(m.array[m.index-1]>>62)) + m.index)
|
||||
}
|
||||
m._initstate()
|
||||
//fmt.Printf("final array(s):%v\n", m.array)
|
||||
}
|
||||
|
||||
func _bytesToUint64(b []byte) (r uint64) {
|
||||
r = uint64(b[0])<<56 +
|
||||
uint64(b[1])<<48 +
|
||||
uint64(b[2])<<40 +
|
||||
uint64(b[3])<<32 +
|
||||
uint64(b[4])<<24 +
|
||||
uint64(b[5])<<16 +
|
||||
uint64(b[6])<<8 +
|
||||
uint64(b[7])
|
||||
return
|
||||
}
|
||||
|
||||
func (m *MT19937_64) SeedFullState(s []byte) {
|
||||
//fmt.Printf("s:%v\n", s)
|
||||
if len(s) < N*8 {
|
||||
// Expand s if shorter than mtwist array state
|
||||
ha := crypto.SHA512
|
||||
h := ha.New()
|
||||
shortfallChunks := ((N * 8) - len(s)) / h.Size()
|
||||
//shortfallRem := ((N * 8) - len(s)) % h.Size()
|
||||
//fmt.Printf("chunks, rem:%d,%d\n", shortfallChunks, shortfallRem)
|
||||
idx := 0
|
||||
for idx < shortfallChunks {
|
||||
_, _ = h.Write(s)
|
||||
s = h.Sum(s)
|
||||
idx += 1
|
||||
}
|
||||
_, _ = h.Write(s)
|
||||
s = h.Sum(s)
|
||||
//fmt.Printf("exp s:%v\n", s)
|
||||
}
|
||||
|
||||
for idx := 0; idx < N; {
|
||||
m.array[idx] = _bytesToUint64(s[idx*8 : (idx*8)+8])
|
||||
idx += 1
|
||||
}
|
||||
//fmt.Printf("final array(xs):%v\n", m.array)
|
||||
m.index = 0
|
||||
m._initstate()
|
||||
}
|
||||
|
||||
func (m *MT19937_64) Int63() uint64 {
|
||||
var i int
|
||||
var x uint64
|
||||
mag01 := []uint64{0, MATRIX_A}
|
||||
if m.index >= N {
|
||||
if m.index == N+1 {
|
||||
m.Seed(int64(5489))
|
||||
}
|
||||
|
||||
for i = 0; i < N-M; i++ {
|
||||
x = (m.array[i] & UPPER_MASK) | (m.array[i+1] & LOWER_MASK)
|
||||
m.array[i] = m.array[i+(M)] ^ (x >> 1) ^ mag01[int(x&uint64(1))]
|
||||
}
|
||||
for ; i < N-1; i++ {
|
||||
x = (m.array[i] & UPPER_MASK) | (m.array[i+1] & LOWER_MASK)
|
||||
m.array[i] = m.array[i+(M-N)] ^ (x >> 1) ^ mag01[int(x&uint64(1))]
|
||||
}
|
||||
x = (m.array[N-1] & UPPER_MASK) | (m.array[0] & LOWER_MASK)
|
||||
m.array[N-1] = m.array[M-1] ^ (x >> 1) ^ mag01[int(x&uint64(1))]
|
||||
m.index = 0
|
||||
}
|
||||
x = m.array[m.index]
|
||||
m.index++
|
||||
x ^= (x >> 29) & 0x5555555555555555
|
||||
x ^= (x << 17) & 0x71D67FFFEDA60000
|
||||
x ^= (x << 37) & 0xFFF7EEE000000000
|
||||
x ^= (x >> 43)
|
||||
return x
|
||||
}
|
||||
|
||||
func (m *MT19937_64) IntN(value uint64) uint64 {
|
||||
return m.Int63() % value
|
||||
}
|
||||
|
||||
func (m *MT19937_64) Read(p []byte) (n int, err error) {
|
||||
for idx := 0; idx < len(p); idx++ {
|
||||
p[idx] = byte( (m.Int63()>>47) % 256)
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
Creative Commons Legal Code
|
||||
|
||||
CC0 1.0 Universal
|
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|
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CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
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LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
|
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|
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INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
|
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REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
|
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PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
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|
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|
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|
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|
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The laws of most jurisdictions throughout the world automatically confer
|
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exclusive Copyright and Related Rights (defined below) upon the creator
|
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|
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|
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|
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|
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|
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|
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For these and/or other purposes and motivations, and without any
|
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|
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|
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1. Copyright and Related Rights. A Work made available under CC0 may be
|
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protected by copyright and related or neighboring rights ("Copyright and
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|
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|
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|
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|
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directive); and
|
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vii. other similar, equivalent or corresponding rights throughout the
|
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world based on applicable law or treaty, and any national
|
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|
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|
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2. Waiver. To the greatest extent permitted by, but not in contravention
|
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of, applicable law, Affirmer hereby overtly, fully, permanently,
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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Further, Affirmer disclaims responsibility for obtaining any necessary
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|
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|
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|
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|
||||
|
|
@ -0,0 +1,929 @@
|
|||
// batcher.go - Constant time polynomial sampler.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
func batcher84(x []uint16) {
|
||||
// In theory this should probably be inlined.
|
||||
compareAndSwap := func(x []uint16, i, j int) {
|
||||
const _5q = 5 * paramQ
|
||||
var c int32
|
||||
var t uint16
|
||||
|
||||
c = _5q - 1 - int32(x[16*i])
|
||||
c >>= 31
|
||||
t = x[16*i] ^ x[16*j]
|
||||
t &= uint16(c)
|
||||
x[16*i] ^= t
|
||||
x[16*j] ^= t
|
||||
}
|
||||
|
||||
compareAndSwap(x, 0, 1)
|
||||
compareAndSwap(x, 2, 3)
|
||||
compareAndSwap(x, 0, 2)
|
||||
compareAndSwap(x, 1, 3)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 4, 5)
|
||||
compareAndSwap(x, 6, 7)
|
||||
compareAndSwap(x, 4, 6)
|
||||
compareAndSwap(x, 5, 7)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 0, 4)
|
||||
compareAndSwap(x, 2, 6)
|
||||
compareAndSwap(x, 2, 4)
|
||||
compareAndSwap(x, 1, 5)
|
||||
compareAndSwap(x, 3, 7)
|
||||
compareAndSwap(x, 3, 5)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 3, 4)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 8, 9)
|
||||
compareAndSwap(x, 10, 11)
|
||||
compareAndSwap(x, 8, 10)
|
||||
compareAndSwap(x, 9, 11)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 12, 13)
|
||||
compareAndSwap(x, 14, 15)
|
||||
compareAndSwap(x, 12, 14)
|
||||
compareAndSwap(x, 13, 15)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 8, 12)
|
||||
compareAndSwap(x, 10, 14)
|
||||
compareAndSwap(x, 10, 12)
|
||||
compareAndSwap(x, 9, 13)
|
||||
compareAndSwap(x, 11, 15)
|
||||
compareAndSwap(x, 11, 13)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 11, 12)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 0, 8)
|
||||
compareAndSwap(x, 4, 12)
|
||||
compareAndSwap(x, 4, 8)
|
||||
compareAndSwap(x, 2, 10)
|
||||
compareAndSwap(x, 6, 14)
|
||||
compareAndSwap(x, 6, 10)
|
||||
compareAndSwap(x, 2, 4)
|
||||
compareAndSwap(x, 6, 8)
|
||||
compareAndSwap(x, 10, 12)
|
||||
compareAndSwap(x, 1, 9)
|
||||
compareAndSwap(x, 5, 13)
|
||||
compareAndSwap(x, 5, 9)
|
||||
compareAndSwap(x, 3, 11)
|
||||
compareAndSwap(x, 7, 15)
|
||||
compareAndSwap(x, 7, 11)
|
||||
compareAndSwap(x, 3, 5)
|
||||
compareAndSwap(x, 7, 9)
|
||||
compareAndSwap(x, 11, 13)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 3, 4)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 7, 8)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 11, 12)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 16, 17)
|
||||
compareAndSwap(x, 18, 19)
|
||||
compareAndSwap(x, 16, 18)
|
||||
compareAndSwap(x, 17, 19)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 20, 21)
|
||||
compareAndSwap(x, 22, 23)
|
||||
compareAndSwap(x, 20, 22)
|
||||
compareAndSwap(x, 21, 23)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 16, 20)
|
||||
compareAndSwap(x, 18, 22)
|
||||
compareAndSwap(x, 18, 20)
|
||||
compareAndSwap(x, 17, 21)
|
||||
compareAndSwap(x, 19, 23)
|
||||
compareAndSwap(x, 19, 21)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 19, 20)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 24, 25)
|
||||
compareAndSwap(x, 26, 27)
|
||||
compareAndSwap(x, 24, 26)
|
||||
compareAndSwap(x, 25, 27)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 28, 29)
|
||||
compareAndSwap(x, 30, 31)
|
||||
compareAndSwap(x, 28, 30)
|
||||
compareAndSwap(x, 29, 31)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 24, 28)
|
||||
compareAndSwap(x, 26, 30)
|
||||
compareAndSwap(x, 26, 28)
|
||||
compareAndSwap(x, 25, 29)
|
||||
compareAndSwap(x, 27, 31)
|
||||
compareAndSwap(x, 27, 29)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 27, 28)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 16, 24)
|
||||
compareAndSwap(x, 20, 28)
|
||||
compareAndSwap(x, 20, 24)
|
||||
compareAndSwap(x, 18, 26)
|
||||
compareAndSwap(x, 22, 30)
|
||||
compareAndSwap(x, 22, 26)
|
||||
compareAndSwap(x, 18, 20)
|
||||
compareAndSwap(x, 22, 24)
|
||||
compareAndSwap(x, 26, 28)
|
||||
compareAndSwap(x, 17, 25)
|
||||
compareAndSwap(x, 21, 29)
|
||||
compareAndSwap(x, 21, 25)
|
||||
compareAndSwap(x, 19, 27)
|
||||
compareAndSwap(x, 23, 31)
|
||||
compareAndSwap(x, 23, 27)
|
||||
compareAndSwap(x, 19, 21)
|
||||
compareAndSwap(x, 23, 25)
|
||||
compareAndSwap(x, 27, 29)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 19, 20)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 23, 24)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 27, 28)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 0, 16)
|
||||
compareAndSwap(x, 8, 24)
|
||||
compareAndSwap(x, 8, 16)
|
||||
compareAndSwap(x, 4, 20)
|
||||
compareAndSwap(x, 12, 28)
|
||||
compareAndSwap(x, 12, 20)
|
||||
compareAndSwap(x, 4, 8)
|
||||
compareAndSwap(x, 12, 16)
|
||||
compareAndSwap(x, 20, 24)
|
||||
compareAndSwap(x, 2, 18)
|
||||
compareAndSwap(x, 10, 26)
|
||||
compareAndSwap(x, 10, 18)
|
||||
compareAndSwap(x, 6, 22)
|
||||
compareAndSwap(x, 14, 30)
|
||||
compareAndSwap(x, 14, 22)
|
||||
compareAndSwap(x, 6, 10)
|
||||
compareAndSwap(x, 14, 18)
|
||||
compareAndSwap(x, 22, 26)
|
||||
compareAndSwap(x, 2, 4)
|
||||
compareAndSwap(x, 6, 8)
|
||||
compareAndSwap(x, 10, 12)
|
||||
compareAndSwap(x, 14, 16)
|
||||
compareAndSwap(x, 18, 20)
|
||||
compareAndSwap(x, 22, 24)
|
||||
compareAndSwap(x, 26, 28)
|
||||
compareAndSwap(x, 1, 17)
|
||||
compareAndSwap(x, 9, 25)
|
||||
compareAndSwap(x, 9, 17)
|
||||
compareAndSwap(x, 5, 21)
|
||||
compareAndSwap(x, 13, 29)
|
||||
compareAndSwap(x, 13, 21)
|
||||
compareAndSwap(x, 5, 9)
|
||||
compareAndSwap(x, 13, 17)
|
||||
compareAndSwap(x, 21, 25)
|
||||
compareAndSwap(x, 3, 19)
|
||||
compareAndSwap(x, 11, 27)
|
||||
compareAndSwap(x, 11, 19)
|
||||
compareAndSwap(x, 7, 23)
|
||||
compareAndSwap(x, 15, 31)
|
||||
compareAndSwap(x, 15, 23)
|
||||
compareAndSwap(x, 7, 11)
|
||||
compareAndSwap(x, 15, 19)
|
||||
compareAndSwap(x, 23, 27)
|
||||
compareAndSwap(x, 3, 5)
|
||||
compareAndSwap(x, 7, 9)
|
||||
compareAndSwap(x, 11, 13)
|
||||
compareAndSwap(x, 15, 17)
|
||||
compareAndSwap(x, 19, 21)
|
||||
compareAndSwap(x, 23, 25)
|
||||
compareAndSwap(x, 27, 29)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 3, 4)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 7, 8)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 11, 12)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 15, 16)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 19, 20)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 23, 24)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 27, 28)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 32, 33)
|
||||
compareAndSwap(x, 34, 35)
|
||||
compareAndSwap(x, 32, 34)
|
||||
compareAndSwap(x, 33, 35)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 36, 37)
|
||||
compareAndSwap(x, 38, 39)
|
||||
compareAndSwap(x, 36, 38)
|
||||
compareAndSwap(x, 37, 39)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 32, 36)
|
||||
compareAndSwap(x, 34, 38)
|
||||
compareAndSwap(x, 34, 36)
|
||||
compareAndSwap(x, 33, 37)
|
||||
compareAndSwap(x, 35, 39)
|
||||
compareAndSwap(x, 35, 37)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 35, 36)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 40, 41)
|
||||
compareAndSwap(x, 42, 43)
|
||||
compareAndSwap(x, 40, 42)
|
||||
compareAndSwap(x, 41, 43)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 44, 45)
|
||||
compareAndSwap(x, 46, 47)
|
||||
compareAndSwap(x, 44, 46)
|
||||
compareAndSwap(x, 45, 47)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 40, 44)
|
||||
compareAndSwap(x, 42, 46)
|
||||
compareAndSwap(x, 42, 44)
|
||||
compareAndSwap(x, 41, 45)
|
||||
compareAndSwap(x, 43, 47)
|
||||
compareAndSwap(x, 43, 45)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 43, 44)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 32, 40)
|
||||
compareAndSwap(x, 36, 44)
|
||||
compareAndSwap(x, 36, 40)
|
||||
compareAndSwap(x, 34, 42)
|
||||
compareAndSwap(x, 38, 46)
|
||||
compareAndSwap(x, 38, 42)
|
||||
compareAndSwap(x, 34, 36)
|
||||
compareAndSwap(x, 38, 40)
|
||||
compareAndSwap(x, 42, 44)
|
||||
compareAndSwap(x, 33, 41)
|
||||
compareAndSwap(x, 37, 45)
|
||||
compareAndSwap(x, 37, 41)
|
||||
compareAndSwap(x, 35, 43)
|
||||
compareAndSwap(x, 39, 47)
|
||||
compareAndSwap(x, 39, 43)
|
||||
compareAndSwap(x, 35, 37)
|
||||
compareAndSwap(x, 39, 41)
|
||||
compareAndSwap(x, 43, 45)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 35, 36)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 39, 40)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 43, 44)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 48, 49)
|
||||
compareAndSwap(x, 50, 51)
|
||||
compareAndSwap(x, 48, 50)
|
||||
compareAndSwap(x, 49, 51)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 52, 53)
|
||||
compareAndSwap(x, 54, 55)
|
||||
compareAndSwap(x, 52, 54)
|
||||
compareAndSwap(x, 53, 55)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 48, 52)
|
||||
compareAndSwap(x, 50, 54)
|
||||
compareAndSwap(x, 50, 52)
|
||||
compareAndSwap(x, 49, 53)
|
||||
compareAndSwap(x, 51, 55)
|
||||
compareAndSwap(x, 51, 53)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 51, 52)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 56, 57)
|
||||
compareAndSwap(x, 58, 59)
|
||||
compareAndSwap(x, 56, 58)
|
||||
compareAndSwap(x, 57, 59)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 60, 61)
|
||||
compareAndSwap(x, 62, 63)
|
||||
compareAndSwap(x, 60, 62)
|
||||
compareAndSwap(x, 61, 63)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 56, 60)
|
||||
compareAndSwap(x, 58, 62)
|
||||
compareAndSwap(x, 58, 60)
|
||||
compareAndSwap(x, 57, 61)
|
||||
compareAndSwap(x, 59, 63)
|
||||
compareAndSwap(x, 59, 61)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 59, 60)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 48, 56)
|
||||
compareAndSwap(x, 52, 60)
|
||||
compareAndSwap(x, 52, 56)
|
||||
compareAndSwap(x, 50, 58)
|
||||
compareAndSwap(x, 54, 62)
|
||||
compareAndSwap(x, 54, 58)
|
||||
compareAndSwap(x, 50, 52)
|
||||
compareAndSwap(x, 54, 56)
|
||||
compareAndSwap(x, 58, 60)
|
||||
compareAndSwap(x, 49, 57)
|
||||
compareAndSwap(x, 53, 61)
|
||||
compareAndSwap(x, 53, 57)
|
||||
compareAndSwap(x, 51, 59)
|
||||
compareAndSwap(x, 55, 63)
|
||||
compareAndSwap(x, 55, 59)
|
||||
compareAndSwap(x, 51, 53)
|
||||
compareAndSwap(x, 55, 57)
|
||||
compareAndSwap(x, 59, 61)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 51, 52)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 55, 56)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 59, 60)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 32, 48)
|
||||
compareAndSwap(x, 40, 56)
|
||||
compareAndSwap(x, 40, 48)
|
||||
compareAndSwap(x, 36, 52)
|
||||
compareAndSwap(x, 44, 60)
|
||||
compareAndSwap(x, 44, 52)
|
||||
compareAndSwap(x, 36, 40)
|
||||
compareAndSwap(x, 44, 48)
|
||||
compareAndSwap(x, 52, 56)
|
||||
compareAndSwap(x, 34, 50)
|
||||
compareAndSwap(x, 42, 58)
|
||||
compareAndSwap(x, 42, 50)
|
||||
compareAndSwap(x, 38, 54)
|
||||
compareAndSwap(x, 46, 62)
|
||||
compareAndSwap(x, 46, 54)
|
||||
compareAndSwap(x, 38, 42)
|
||||
compareAndSwap(x, 46, 50)
|
||||
compareAndSwap(x, 54, 58)
|
||||
compareAndSwap(x, 34, 36)
|
||||
compareAndSwap(x, 38, 40)
|
||||
compareAndSwap(x, 42, 44)
|
||||
compareAndSwap(x, 46, 48)
|
||||
compareAndSwap(x, 50, 52)
|
||||
compareAndSwap(x, 54, 56)
|
||||
compareAndSwap(x, 58, 60)
|
||||
compareAndSwap(x, 33, 49)
|
||||
compareAndSwap(x, 41, 57)
|
||||
compareAndSwap(x, 41, 49)
|
||||
compareAndSwap(x, 37, 53)
|
||||
compareAndSwap(x, 45, 61)
|
||||
compareAndSwap(x, 45, 53)
|
||||
compareAndSwap(x, 37, 41)
|
||||
compareAndSwap(x, 45, 49)
|
||||
compareAndSwap(x, 53, 57)
|
||||
compareAndSwap(x, 35, 51)
|
||||
compareAndSwap(x, 43, 59)
|
||||
compareAndSwap(x, 43, 51)
|
||||
compareAndSwap(x, 39, 55)
|
||||
compareAndSwap(x, 47, 63)
|
||||
compareAndSwap(x, 47, 55)
|
||||
compareAndSwap(x, 39, 43)
|
||||
compareAndSwap(x, 47, 51)
|
||||
compareAndSwap(x, 55, 59)
|
||||
compareAndSwap(x, 35, 37)
|
||||
compareAndSwap(x, 39, 41)
|
||||
compareAndSwap(x, 43, 45)
|
||||
compareAndSwap(x, 47, 49)
|
||||
compareAndSwap(x, 51, 53)
|
||||
compareAndSwap(x, 55, 57)
|
||||
compareAndSwap(x, 59, 61)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 35, 36)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 39, 40)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 43, 44)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 47, 48)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 51, 52)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 55, 56)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 59, 60)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 0, 32)
|
||||
compareAndSwap(x, 16, 48)
|
||||
compareAndSwap(x, 16, 32)
|
||||
compareAndSwap(x, 8, 40)
|
||||
compareAndSwap(x, 24, 56)
|
||||
compareAndSwap(x, 24, 40)
|
||||
compareAndSwap(x, 8, 16)
|
||||
compareAndSwap(x, 24, 32)
|
||||
compareAndSwap(x, 40, 48)
|
||||
compareAndSwap(x, 4, 36)
|
||||
compareAndSwap(x, 20, 52)
|
||||
compareAndSwap(x, 20, 36)
|
||||
compareAndSwap(x, 12, 44)
|
||||
compareAndSwap(x, 28, 60)
|
||||
compareAndSwap(x, 28, 44)
|
||||
compareAndSwap(x, 12, 20)
|
||||
compareAndSwap(x, 28, 36)
|
||||
compareAndSwap(x, 44, 52)
|
||||
compareAndSwap(x, 4, 8)
|
||||
compareAndSwap(x, 12, 16)
|
||||
compareAndSwap(x, 20, 24)
|
||||
compareAndSwap(x, 28, 32)
|
||||
compareAndSwap(x, 36, 40)
|
||||
compareAndSwap(x, 44, 48)
|
||||
compareAndSwap(x, 52, 56)
|
||||
compareAndSwap(x, 2, 34)
|
||||
compareAndSwap(x, 18, 50)
|
||||
compareAndSwap(x, 18, 34)
|
||||
compareAndSwap(x, 10, 42)
|
||||
compareAndSwap(x, 26, 58)
|
||||
compareAndSwap(x, 26, 42)
|
||||
compareAndSwap(x, 10, 18)
|
||||
compareAndSwap(x, 26, 34)
|
||||
compareAndSwap(x, 42, 50)
|
||||
compareAndSwap(x, 6, 38)
|
||||
compareAndSwap(x, 22, 54)
|
||||
compareAndSwap(x, 22, 38)
|
||||
compareAndSwap(x, 14, 46)
|
||||
compareAndSwap(x, 30, 62)
|
||||
compareAndSwap(x, 30, 46)
|
||||
compareAndSwap(x, 14, 22)
|
||||
compareAndSwap(x, 30, 38)
|
||||
compareAndSwap(x, 46, 54)
|
||||
compareAndSwap(x, 6, 10)
|
||||
compareAndSwap(x, 14, 18)
|
||||
compareAndSwap(x, 22, 26)
|
||||
compareAndSwap(x, 30, 34)
|
||||
compareAndSwap(x, 38, 42)
|
||||
compareAndSwap(x, 46, 50)
|
||||
compareAndSwap(x, 54, 58)
|
||||
compareAndSwap(x, 2, 4)
|
||||
compareAndSwap(x, 6, 8)
|
||||
compareAndSwap(x, 10, 12)
|
||||
compareAndSwap(x, 14, 16)
|
||||
compareAndSwap(x, 18, 20)
|
||||
compareAndSwap(x, 22, 24)
|
||||
compareAndSwap(x, 26, 28)
|
||||
compareAndSwap(x, 30, 32)
|
||||
compareAndSwap(x, 34, 36)
|
||||
compareAndSwap(x, 38, 40)
|
||||
compareAndSwap(x, 42, 44)
|
||||
compareAndSwap(x, 46, 48)
|
||||
compareAndSwap(x, 50, 52)
|
||||
compareAndSwap(x, 54, 56)
|
||||
compareAndSwap(x, 58, 60)
|
||||
compareAndSwap(x, 1, 33)
|
||||
compareAndSwap(x, 17, 49)
|
||||
compareAndSwap(x, 17, 33)
|
||||
compareAndSwap(x, 9, 41)
|
||||
compareAndSwap(x, 25, 57)
|
||||
compareAndSwap(x, 25, 41)
|
||||
compareAndSwap(x, 9, 17)
|
||||
compareAndSwap(x, 25, 33)
|
||||
compareAndSwap(x, 41, 49)
|
||||
compareAndSwap(x, 5, 37)
|
||||
compareAndSwap(x, 21, 53)
|
||||
compareAndSwap(x, 21, 37)
|
||||
compareAndSwap(x, 13, 45)
|
||||
compareAndSwap(x, 29, 61)
|
||||
compareAndSwap(x, 29, 45)
|
||||
compareAndSwap(x, 13, 21)
|
||||
compareAndSwap(x, 29, 37)
|
||||
compareAndSwap(x, 45, 53)
|
||||
compareAndSwap(x, 5, 9)
|
||||
compareAndSwap(x, 13, 17)
|
||||
compareAndSwap(x, 21, 25)
|
||||
compareAndSwap(x, 29, 33)
|
||||
compareAndSwap(x, 37, 41)
|
||||
compareAndSwap(x, 45, 49)
|
||||
compareAndSwap(x, 53, 57)
|
||||
compareAndSwap(x, 3, 35)
|
||||
compareAndSwap(x, 19, 51)
|
||||
compareAndSwap(x, 19, 35)
|
||||
compareAndSwap(x, 11, 43)
|
||||
compareAndSwap(x, 27, 59)
|
||||
compareAndSwap(x, 27, 43)
|
||||
compareAndSwap(x, 11, 19)
|
||||
compareAndSwap(x, 27, 35)
|
||||
compareAndSwap(x, 43, 51)
|
||||
compareAndSwap(x, 7, 39)
|
||||
compareAndSwap(x, 23, 55)
|
||||
compareAndSwap(x, 23, 39)
|
||||
compareAndSwap(x, 15, 47)
|
||||
compareAndSwap(x, 31, 63)
|
||||
compareAndSwap(x, 31, 47)
|
||||
compareAndSwap(x, 15, 23)
|
||||
compareAndSwap(x, 31, 39)
|
||||
compareAndSwap(x, 47, 55)
|
||||
compareAndSwap(x, 7, 11)
|
||||
compareAndSwap(x, 15, 19)
|
||||
compareAndSwap(x, 23, 27)
|
||||
compareAndSwap(x, 31, 35)
|
||||
compareAndSwap(x, 39, 43)
|
||||
compareAndSwap(x, 47, 51)
|
||||
compareAndSwap(x, 55, 59)
|
||||
compareAndSwap(x, 3, 5)
|
||||
compareAndSwap(x, 7, 9)
|
||||
compareAndSwap(x, 11, 13)
|
||||
compareAndSwap(x, 15, 17)
|
||||
compareAndSwap(x, 19, 21)
|
||||
compareAndSwap(x, 23, 25)
|
||||
compareAndSwap(x, 27, 29)
|
||||
compareAndSwap(x, 31, 33)
|
||||
compareAndSwap(x, 35, 37)
|
||||
compareAndSwap(x, 39, 41)
|
||||
compareAndSwap(x, 43, 45)
|
||||
compareAndSwap(x, 47, 49)
|
||||
compareAndSwap(x, 51, 53)
|
||||
compareAndSwap(x, 55, 57)
|
||||
compareAndSwap(x, 59, 61)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 3, 4)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 7, 8)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 11, 12)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 15, 16)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 19, 20)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 23, 24)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 27, 28)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 31, 32)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 35, 36)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 39, 40)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 43, 44)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 47, 48)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 51, 52)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 55, 56)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 59, 60)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 64, 65)
|
||||
compareAndSwap(x, 66, 67)
|
||||
compareAndSwap(x, 64, 66)
|
||||
compareAndSwap(x, 65, 67)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 68, 69)
|
||||
compareAndSwap(x, 70, 71)
|
||||
compareAndSwap(x, 68, 70)
|
||||
compareAndSwap(x, 69, 71)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 64, 68)
|
||||
compareAndSwap(x, 66, 70)
|
||||
compareAndSwap(x, 66, 68)
|
||||
compareAndSwap(x, 65, 69)
|
||||
compareAndSwap(x, 67, 71)
|
||||
compareAndSwap(x, 67, 69)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 67, 68)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 72, 73)
|
||||
compareAndSwap(x, 74, 75)
|
||||
compareAndSwap(x, 72, 74)
|
||||
compareAndSwap(x, 73, 75)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 76, 77)
|
||||
compareAndSwap(x, 78, 79)
|
||||
compareAndSwap(x, 76, 78)
|
||||
compareAndSwap(x, 77, 79)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 72, 76)
|
||||
compareAndSwap(x, 74, 78)
|
||||
compareAndSwap(x, 74, 76)
|
||||
compareAndSwap(x, 73, 77)
|
||||
compareAndSwap(x, 75, 79)
|
||||
compareAndSwap(x, 75, 77)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 75, 76)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 64, 72)
|
||||
compareAndSwap(x, 68, 76)
|
||||
compareAndSwap(x, 68, 72)
|
||||
compareAndSwap(x, 66, 74)
|
||||
compareAndSwap(x, 70, 78)
|
||||
compareAndSwap(x, 70, 74)
|
||||
compareAndSwap(x, 66, 68)
|
||||
compareAndSwap(x, 70, 72)
|
||||
compareAndSwap(x, 74, 76)
|
||||
compareAndSwap(x, 65, 73)
|
||||
compareAndSwap(x, 69, 77)
|
||||
compareAndSwap(x, 69, 73)
|
||||
compareAndSwap(x, 67, 75)
|
||||
compareAndSwap(x, 71, 79)
|
||||
compareAndSwap(x, 71, 75)
|
||||
compareAndSwap(x, 67, 69)
|
||||
compareAndSwap(x, 71, 73)
|
||||
compareAndSwap(x, 75, 77)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 67, 68)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 71, 72)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 75, 76)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 80, 81)
|
||||
compareAndSwap(x, 82, 83)
|
||||
compareAndSwap(x, 80, 82)
|
||||
compareAndSwap(x, 81, 83)
|
||||
compareAndSwap(x, 81, 82)
|
||||
compareAndSwap(x, 81, 82)
|
||||
compareAndSwap(x, 81, 82)
|
||||
compareAndSwap(x, 64, 80)
|
||||
compareAndSwap(x, 72, 80)
|
||||
compareAndSwap(x, 68, 72)
|
||||
compareAndSwap(x, 76, 80)
|
||||
compareAndSwap(x, 66, 82)
|
||||
compareAndSwap(x, 74, 82)
|
||||
compareAndSwap(x, 70, 74)
|
||||
compareAndSwap(x, 78, 82)
|
||||
compareAndSwap(x, 66, 68)
|
||||
compareAndSwap(x, 70, 72)
|
||||
compareAndSwap(x, 74, 76)
|
||||
compareAndSwap(x, 78, 80)
|
||||
compareAndSwap(x, 65, 81)
|
||||
compareAndSwap(x, 73, 81)
|
||||
compareAndSwap(x, 69, 73)
|
||||
compareAndSwap(x, 77, 81)
|
||||
compareAndSwap(x, 67, 83)
|
||||
compareAndSwap(x, 75, 83)
|
||||
compareAndSwap(x, 71, 75)
|
||||
compareAndSwap(x, 79, 83)
|
||||
compareAndSwap(x, 67, 69)
|
||||
compareAndSwap(x, 71, 73)
|
||||
compareAndSwap(x, 75, 77)
|
||||
compareAndSwap(x, 79, 81)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 67, 68)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 71, 72)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 75, 76)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 79, 80)
|
||||
compareAndSwap(x, 81, 82)
|
||||
compareAndSwap(x, 72, 80)
|
||||
compareAndSwap(x, 68, 72)
|
||||
compareAndSwap(x, 76, 80)
|
||||
compareAndSwap(x, 74, 82)
|
||||
compareAndSwap(x, 70, 74)
|
||||
compareAndSwap(x, 78, 82)
|
||||
compareAndSwap(x, 66, 68)
|
||||
compareAndSwap(x, 70, 72)
|
||||
compareAndSwap(x, 74, 76)
|
||||
compareAndSwap(x, 78, 80)
|
||||
compareAndSwap(x, 73, 81)
|
||||
compareAndSwap(x, 69, 73)
|
||||
compareAndSwap(x, 77, 81)
|
||||
compareAndSwap(x, 75, 83)
|
||||
compareAndSwap(x, 71, 75)
|
||||
compareAndSwap(x, 79, 83)
|
||||
compareAndSwap(x, 67, 69)
|
||||
compareAndSwap(x, 71, 73)
|
||||
compareAndSwap(x, 75, 77)
|
||||
compareAndSwap(x, 79, 81)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 67, 68)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 71, 72)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 75, 76)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 79, 80)
|
||||
compareAndSwap(x, 81, 82)
|
||||
compareAndSwap(x, 0, 64)
|
||||
compareAndSwap(x, 32, 64)
|
||||
compareAndSwap(x, 16, 80)
|
||||
compareAndSwap(x, 48, 80)
|
||||
compareAndSwap(x, 16, 32)
|
||||
compareAndSwap(x, 48, 64)
|
||||
compareAndSwap(x, 8, 72)
|
||||
compareAndSwap(x, 40, 72)
|
||||
compareAndSwap(x, 24, 40)
|
||||
compareAndSwap(x, 56, 72)
|
||||
compareAndSwap(x, 8, 16)
|
||||
compareAndSwap(x, 24, 32)
|
||||
compareAndSwap(x, 40, 48)
|
||||
compareAndSwap(x, 56, 64)
|
||||
compareAndSwap(x, 72, 80)
|
||||
compareAndSwap(x, 4, 68)
|
||||
compareAndSwap(x, 36, 68)
|
||||
compareAndSwap(x, 20, 36)
|
||||
compareAndSwap(x, 52, 68)
|
||||
compareAndSwap(x, 12, 76)
|
||||
compareAndSwap(x, 44, 76)
|
||||
compareAndSwap(x, 28, 44)
|
||||
compareAndSwap(x, 60, 76)
|
||||
compareAndSwap(x, 12, 20)
|
||||
compareAndSwap(x, 28, 36)
|
||||
compareAndSwap(x, 44, 52)
|
||||
compareAndSwap(x, 60, 68)
|
||||
compareAndSwap(x, 4, 8)
|
||||
compareAndSwap(x, 12, 16)
|
||||
compareAndSwap(x, 20, 24)
|
||||
compareAndSwap(x, 28, 32)
|
||||
compareAndSwap(x, 36, 40)
|
||||
compareAndSwap(x, 44, 48)
|
||||
compareAndSwap(x, 52, 56)
|
||||
compareAndSwap(x, 60, 64)
|
||||
compareAndSwap(x, 68, 72)
|
||||
compareAndSwap(x, 76, 80)
|
||||
compareAndSwap(x, 2, 66)
|
||||
compareAndSwap(x, 34, 66)
|
||||
compareAndSwap(x, 18, 82)
|
||||
compareAndSwap(x, 50, 82)
|
||||
compareAndSwap(x, 18, 34)
|
||||
compareAndSwap(x, 50, 66)
|
||||
compareAndSwap(x, 10, 74)
|
||||
compareAndSwap(x, 42, 74)
|
||||
compareAndSwap(x, 26, 42)
|
||||
compareAndSwap(x, 58, 74)
|
||||
compareAndSwap(x, 10, 18)
|
||||
compareAndSwap(x, 26, 34)
|
||||
compareAndSwap(x, 42, 50)
|
||||
compareAndSwap(x, 58, 66)
|
||||
compareAndSwap(x, 74, 82)
|
||||
compareAndSwap(x, 6, 70)
|
||||
compareAndSwap(x, 38, 70)
|
||||
compareAndSwap(x, 22, 38)
|
||||
compareAndSwap(x, 54, 70)
|
||||
compareAndSwap(x, 14, 78)
|
||||
compareAndSwap(x, 46, 78)
|
||||
compareAndSwap(x, 30, 46)
|
||||
compareAndSwap(x, 62, 78)
|
||||
compareAndSwap(x, 14, 22)
|
||||
compareAndSwap(x, 30, 38)
|
||||
compareAndSwap(x, 46, 54)
|
||||
compareAndSwap(x, 62, 70)
|
||||
compareAndSwap(x, 6, 10)
|
||||
compareAndSwap(x, 14, 18)
|
||||
compareAndSwap(x, 22, 26)
|
||||
compareAndSwap(x, 30, 34)
|
||||
compareAndSwap(x, 38, 42)
|
||||
compareAndSwap(x, 46, 50)
|
||||
compareAndSwap(x, 54, 58)
|
||||
compareAndSwap(x, 62, 66)
|
||||
compareAndSwap(x, 70, 74)
|
||||
compareAndSwap(x, 78, 82)
|
||||
compareAndSwap(x, 2, 4)
|
||||
compareAndSwap(x, 6, 8)
|
||||
compareAndSwap(x, 10, 12)
|
||||
compareAndSwap(x, 14, 16)
|
||||
compareAndSwap(x, 18, 20)
|
||||
compareAndSwap(x, 22, 24)
|
||||
compareAndSwap(x, 26, 28)
|
||||
compareAndSwap(x, 30, 32)
|
||||
compareAndSwap(x, 34, 36)
|
||||
compareAndSwap(x, 38, 40)
|
||||
compareAndSwap(x, 42, 44)
|
||||
compareAndSwap(x, 46, 48)
|
||||
compareAndSwap(x, 50, 52)
|
||||
compareAndSwap(x, 54, 56)
|
||||
compareAndSwap(x, 58, 60)
|
||||
compareAndSwap(x, 62, 64)
|
||||
compareAndSwap(x, 66, 68)
|
||||
compareAndSwap(x, 70, 72)
|
||||
compareAndSwap(x, 74, 76)
|
||||
compareAndSwap(x, 78, 80)
|
||||
compareAndSwap(x, 1, 65)
|
||||
compareAndSwap(x, 33, 65)
|
||||
compareAndSwap(x, 17, 81)
|
||||
compareAndSwap(x, 49, 81)
|
||||
compareAndSwap(x, 17, 33)
|
||||
compareAndSwap(x, 49, 65)
|
||||
compareAndSwap(x, 9, 73)
|
||||
compareAndSwap(x, 41, 73)
|
||||
compareAndSwap(x, 25, 41)
|
||||
compareAndSwap(x, 57, 73)
|
||||
compareAndSwap(x, 9, 17)
|
||||
compareAndSwap(x, 25, 33)
|
||||
compareAndSwap(x, 41, 49)
|
||||
compareAndSwap(x, 57, 65)
|
||||
compareAndSwap(x, 73, 81)
|
||||
compareAndSwap(x, 5, 69)
|
||||
compareAndSwap(x, 37, 69)
|
||||
compareAndSwap(x, 21, 37)
|
||||
compareAndSwap(x, 53, 69)
|
||||
compareAndSwap(x, 13, 77)
|
||||
compareAndSwap(x, 45, 77)
|
||||
compareAndSwap(x, 29, 45)
|
||||
compareAndSwap(x, 61, 77)
|
||||
compareAndSwap(x, 13, 21)
|
||||
compareAndSwap(x, 29, 37)
|
||||
compareAndSwap(x, 45, 53)
|
||||
compareAndSwap(x, 61, 69)
|
||||
compareAndSwap(x, 5, 9)
|
||||
compareAndSwap(x, 13, 17)
|
||||
compareAndSwap(x, 21, 25)
|
||||
compareAndSwap(x, 29, 33)
|
||||
compareAndSwap(x, 37, 41)
|
||||
compareAndSwap(x, 45, 49)
|
||||
compareAndSwap(x, 53, 57)
|
||||
compareAndSwap(x, 61, 65)
|
||||
compareAndSwap(x, 69, 73)
|
||||
compareAndSwap(x, 77, 81)
|
||||
compareAndSwap(x, 3, 67)
|
||||
compareAndSwap(x, 35, 67)
|
||||
compareAndSwap(x, 19, 83)
|
||||
compareAndSwap(x, 51, 83)
|
||||
compareAndSwap(x, 19, 35)
|
||||
compareAndSwap(x, 51, 67)
|
||||
compareAndSwap(x, 11, 75)
|
||||
compareAndSwap(x, 43, 75)
|
||||
compareAndSwap(x, 27, 43)
|
||||
compareAndSwap(x, 59, 75)
|
||||
compareAndSwap(x, 11, 19)
|
||||
compareAndSwap(x, 27, 35)
|
||||
compareAndSwap(x, 43, 51)
|
||||
compareAndSwap(x, 59, 67)
|
||||
compareAndSwap(x, 75, 83)
|
||||
compareAndSwap(x, 7, 71)
|
||||
compareAndSwap(x, 39, 71)
|
||||
compareAndSwap(x, 23, 39)
|
||||
compareAndSwap(x, 55, 71)
|
||||
compareAndSwap(x, 15, 79)
|
||||
compareAndSwap(x, 47, 79)
|
||||
compareAndSwap(x, 31, 47)
|
||||
compareAndSwap(x, 63, 79)
|
||||
compareAndSwap(x, 15, 23)
|
||||
compareAndSwap(x, 31, 39)
|
||||
compareAndSwap(x, 47, 55)
|
||||
compareAndSwap(x, 63, 71)
|
||||
compareAndSwap(x, 7, 11)
|
||||
compareAndSwap(x, 15, 19)
|
||||
compareAndSwap(x, 23, 27)
|
||||
compareAndSwap(x, 31, 35)
|
||||
compareAndSwap(x, 39, 43)
|
||||
compareAndSwap(x, 47, 51)
|
||||
compareAndSwap(x, 55, 59)
|
||||
compareAndSwap(x, 63, 67)
|
||||
compareAndSwap(x, 71, 75)
|
||||
compareAndSwap(x, 79, 83)
|
||||
compareAndSwap(x, 3, 5)
|
||||
compareAndSwap(x, 7, 9)
|
||||
compareAndSwap(x, 11, 13)
|
||||
compareAndSwap(x, 15, 17)
|
||||
compareAndSwap(x, 19, 21)
|
||||
compareAndSwap(x, 23, 25)
|
||||
compareAndSwap(x, 27, 29)
|
||||
compareAndSwap(x, 31, 33)
|
||||
compareAndSwap(x, 35, 37)
|
||||
compareAndSwap(x, 39, 41)
|
||||
compareAndSwap(x, 43, 45)
|
||||
compareAndSwap(x, 47, 49)
|
||||
compareAndSwap(x, 51, 53)
|
||||
compareAndSwap(x, 55, 57)
|
||||
compareAndSwap(x, 59, 61)
|
||||
compareAndSwap(x, 63, 65)
|
||||
compareAndSwap(x, 67, 69)
|
||||
compareAndSwap(x, 71, 73)
|
||||
compareAndSwap(x, 75, 77)
|
||||
compareAndSwap(x, 79, 81)
|
||||
compareAndSwap(x, 1, 2)
|
||||
compareAndSwap(x, 3, 4)
|
||||
compareAndSwap(x, 5, 6)
|
||||
compareAndSwap(x, 7, 8)
|
||||
compareAndSwap(x, 9, 10)
|
||||
compareAndSwap(x, 11, 12)
|
||||
compareAndSwap(x, 13, 14)
|
||||
compareAndSwap(x, 15, 16)
|
||||
compareAndSwap(x, 17, 18)
|
||||
compareAndSwap(x, 19, 20)
|
||||
compareAndSwap(x, 21, 22)
|
||||
compareAndSwap(x, 23, 24)
|
||||
compareAndSwap(x, 25, 26)
|
||||
compareAndSwap(x, 27, 28)
|
||||
compareAndSwap(x, 29, 30)
|
||||
compareAndSwap(x, 31, 32)
|
||||
compareAndSwap(x, 33, 34)
|
||||
compareAndSwap(x, 35, 36)
|
||||
compareAndSwap(x, 37, 38)
|
||||
compareAndSwap(x, 39, 40)
|
||||
compareAndSwap(x, 41, 42)
|
||||
compareAndSwap(x, 43, 44)
|
||||
compareAndSwap(x, 45, 46)
|
||||
compareAndSwap(x, 47, 48)
|
||||
compareAndSwap(x, 49, 50)
|
||||
compareAndSwap(x, 51, 52)
|
||||
compareAndSwap(x, 53, 54)
|
||||
compareAndSwap(x, 55, 56)
|
||||
compareAndSwap(x, 57, 58)
|
||||
compareAndSwap(x, 59, 60)
|
||||
compareAndSwap(x, 61, 62)
|
||||
compareAndSwap(x, 63, 64)
|
||||
compareAndSwap(x, 65, 66)
|
||||
compareAndSwap(x, 67, 68)
|
||||
compareAndSwap(x, 69, 70)
|
||||
compareAndSwap(x, 71, 72)
|
||||
compareAndSwap(x, 73, 74)
|
||||
compareAndSwap(x, 75, 76)
|
||||
compareAndSwap(x, 77, 78)
|
||||
compareAndSwap(x, 79, 80)
|
||||
compareAndSwap(x, 81, 82)
|
||||
}
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
// error_correction.go - NewHope key exchange error correction.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
import "blitter.com/go/chacha20"
|
||||
|
||||
func abs(v int32) int32 {
|
||||
mask := v >> 31
|
||||
return (v ^ mask) - mask
|
||||
}
|
||||
|
||||
func f(v0, v1 *int32, x int32) int32 {
|
||||
// The`ref` code uses uint32 for x, but none of the values ever get large
|
||||
// enough for that, and that would be cast-tastic due to Go being Go.
|
||||
|
||||
// Next 6 lines compute t = x/PARAM_Q
|
||||
b := x * 2730
|
||||
t := b >> 25
|
||||
b = x - t*paramQ
|
||||
b = (paramQ - 1) - b
|
||||
b >>= 31
|
||||
t -= b
|
||||
|
||||
r := t & 1
|
||||
xit := t >> 1
|
||||
*v0 = xit + r // v0 = round(x/(2*PARAM_Q))
|
||||
|
||||
t--
|
||||
r = t & 1
|
||||
*v1 = (t >> 1) + r
|
||||
|
||||
return abs(x - ((*v0) * 2 * paramQ))
|
||||
}
|
||||
|
||||
func g(x int32) int32 {
|
||||
// Next 6 lines compute t = x/(4 *PARAMQ)
|
||||
b := x * 2730
|
||||
t := b >> 27
|
||||
b = x - t*(paramQ*4)
|
||||
b = (paramQ * 4) - b
|
||||
b >>= 31
|
||||
t -= b
|
||||
|
||||
c := t & 1
|
||||
t = (t >> 1) + c // t = round(x/(8*PARAM_Q))
|
||||
|
||||
t *= 8 * paramQ
|
||||
|
||||
return abs(t - x)
|
||||
}
|
||||
|
||||
func llDecode(xi0, xi1, xi2, xi3 int32) int16 {
|
||||
t := g(xi0)
|
||||
t += g(xi1)
|
||||
t += g(xi2)
|
||||
t += g(xi3)
|
||||
|
||||
t -= 8 * paramQ
|
||||
t >>= 31
|
||||
return int16(t & 1)
|
||||
}
|
||||
|
||||
func (c *poly) helpRec(v *poly, seed *[SeedBytes]byte, nonce byte) {
|
||||
var v0, v1, vTmp [4]int32
|
||||
var k int32
|
||||
var rand [32]byte
|
||||
var n [8]byte
|
||||
|
||||
n[7] = nonce
|
||||
|
||||
stream, err := chacha20.New(seed[:], n[:])
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
stream.KeyStream(rand[:])
|
||||
stream.Reset()
|
||||
defer memwipe(rand[:])
|
||||
|
||||
for i := uint(0); i < 256; i++ {
|
||||
rBit := int32((rand[i>>3] >> (i & 7)) & 1)
|
||||
|
||||
vTmp[0], vTmp[1], vTmp[2], vTmp[3] = int32(v.coeffs[i]), int32(v.coeffs[256+i]), int32(v.coeffs[512+i]), int32(v.coeffs[768+i])
|
||||
|
||||
// newhope-20151209 - New version of the reconciliation.
|
||||
k = f(&v0[0], &v1[0], 8*vTmp[0]+4*rBit)
|
||||
k += f(&v0[1], &v1[1], 8*vTmp[1]+4*rBit)
|
||||
k += f(&v0[2], &v1[2], 8*vTmp[2]+4*rBit)
|
||||
k += f(&v0[3], &v1[3], 8*vTmp[3]+4*rBit)
|
||||
|
||||
k = (2*paramQ - 1 - k) >> 31
|
||||
|
||||
vTmp[0] = ((^k) & v0[0]) ^ (k & v1[0])
|
||||
vTmp[1] = ((^k) & v0[1]) ^ (k & v1[1])
|
||||
vTmp[2] = ((^k) & v0[2]) ^ (k & v1[2])
|
||||
vTmp[3] = ((^k) & v0[3]) ^ (k & v1[3])
|
||||
|
||||
c.coeffs[0+i] = uint16((vTmp[0] - vTmp[3]) & 3)
|
||||
c.coeffs[256+i] = uint16((vTmp[1] - vTmp[3]) & 3)
|
||||
c.coeffs[512+i] = uint16((vTmp[2] - vTmp[3]) & 3)
|
||||
c.coeffs[768+i] = uint16((-k + 2*vTmp[3]) & 3)
|
||||
}
|
||||
|
||||
for i := range vTmp {
|
||||
vTmp[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func rec(key *[32]byte, v, c *poly) {
|
||||
var tmp, vTmp, cTmp [4]int32
|
||||
for i := range key {
|
||||
key[i] = 0
|
||||
}
|
||||
|
||||
for i := uint(0); i < 256; i++ {
|
||||
vTmp[0], vTmp[1], vTmp[2], vTmp[3] = int32(v.coeffs[i]), int32(v.coeffs[256+i]), int32(v.coeffs[512+i]), int32(v.coeffs[768+i])
|
||||
cTmp[0], cTmp[1], cTmp[2], cTmp[3] = int32(c.coeffs[i]), int32(c.coeffs[256+i]), int32(c.coeffs[512+i]), int32(c.coeffs[768+i])
|
||||
tmp[0] = 16*paramQ + 8*vTmp[0] - paramQ*(2*cTmp[0]+cTmp[3])
|
||||
tmp[1] = 16*paramQ + 8*vTmp[1] - paramQ*(2*cTmp[1]+cTmp[3])
|
||||
tmp[2] = 16*paramQ + 8*vTmp[2] - paramQ*(2*cTmp[2]+cTmp[3])
|
||||
tmp[3] = 16*paramQ + 8*vTmp[3] - paramQ*(cTmp[3])
|
||||
|
||||
key[i>>3] |= byte(llDecode(tmp[0], tmp[1], tmp[2], tmp[3]) << (i & 7))
|
||||
}
|
||||
|
||||
for i := 0; i < 4; i++ {
|
||||
tmp[i] = 0
|
||||
vTmp[i] = 0
|
||||
cTmp[i] = 0
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,220 @@
|
|||
// newhope.go - NewHope interface.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
// Package newhope implements a key exchange based on the Ring Learning with
|
||||
// Errors Problem. It is a mechanical port of the Public Domain implementation
|
||||
// by Erdem Alkim, Léo Ducas, Thomas Pöppelmann, and Peter Schwabe.
|
||||
//
|
||||
// For more information see:
|
||||
// https://cryptojedi.org/papers/newhope-20161119.pdf
|
||||
// https://cryptojedi.org/papers/newhopesimple-20161217.pdf
|
||||
//
|
||||
package newhope
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
const (
|
||||
// SharedSecretSize is the length of a Shared Secret in bytes.
|
||||
SharedSecretSize = 32
|
||||
|
||||
// UpstreamVersion is the version of the upstream package this
|
||||
// implementation is compatible with.
|
||||
UpstreamVersion = "20160815"
|
||||
|
||||
// RecBytes is the length of the reconciliation data in bytes.
|
||||
RecBytes = 256
|
||||
|
||||
// SendASize is the length of Alice's public key in bytes.
|
||||
SendASize = PolyBytes + SeedBytes
|
||||
|
||||
// SendBSize is the length of Bob's public key in bytes.
|
||||
SendBSize = PolyBytes + RecBytes
|
||||
)
|
||||
|
||||
// TorSampling enables the constant time generation of the `a` parameter,
|
||||
// where every successful `a` generation will take the same amount of time.
|
||||
// Most users will probably not want to enable this as it does come with a
|
||||
// performance penalty. Alice and Bob *MUST* agree on the sampling method,
|
||||
// or the key exchange will fail.
|
||||
var TorSampling = false
|
||||
|
||||
func encodeA(r []byte, pk *poly, seed *[SeedBytes]byte) {
|
||||
pk.toBytes(r)
|
||||
for i := 0; i < SeedBytes; i++ {
|
||||
r[PolyBytes+i] = seed[i]
|
||||
}
|
||||
}
|
||||
|
||||
func decodeA(pk *poly, seed *[SeedBytes]byte, r []byte) {
|
||||
pk.fromBytes(r)
|
||||
for i := range seed {
|
||||
seed[i] = r[PolyBytes+i]
|
||||
}
|
||||
}
|
||||
|
||||
func encodeB(r []byte, b *poly, c *poly) {
|
||||
b.toBytes(r)
|
||||
for i := 0; i < paramN/4; i++ {
|
||||
r[PolyBytes+i] = byte(c.coeffs[4*i]) | byte(c.coeffs[4*i+1]<<2) | byte(c.coeffs[4*i+2]<<4) | byte(c.coeffs[4*i+3]<<6)
|
||||
}
|
||||
}
|
||||
|
||||
func decodeB(b *poly, c *poly, r []byte) {
|
||||
b.fromBytes(r)
|
||||
for i := 0; i < paramN/4; i++ {
|
||||
c.coeffs[4*i+0] = uint16(r[PolyBytes+i]) & 0x03
|
||||
c.coeffs[4*i+1] = uint16(r[PolyBytes+i]>>2) & 0x03
|
||||
c.coeffs[4*i+2] = uint16(r[PolyBytes+i]>>4) & 0x03
|
||||
c.coeffs[4*i+3] = uint16(r[PolyBytes+i] >> 6)
|
||||
}
|
||||
}
|
||||
|
||||
func memwipe(b []byte) {
|
||||
for i := range b {
|
||||
b[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
// PublicKeyAlice is Alice's NewHope public key.
|
||||
type PublicKeyAlice struct {
|
||||
Send [SendASize]byte
|
||||
}
|
||||
|
||||
// PrivateKeyAlice is Alice's NewHope private key.
|
||||
type PrivateKeyAlice struct {
|
||||
sk poly
|
||||
}
|
||||
|
||||
// Reset clears all sensitive information such that it no longer appears in
|
||||
// memory.
|
||||
func (k *PrivateKeyAlice) Reset() {
|
||||
k.sk.reset()
|
||||
}
|
||||
|
||||
// GenerateKeyPairAlice returns a private/public key pair. The private key is
|
||||
// generated using the given reader, which must return random data. The
|
||||
// receiver side of the key exchange (aka "Bob") MUST use KeyExchangeBob()
|
||||
// instead of this routine.
|
||||
func GenerateKeyPairAlice(rand io.Reader) (*PrivateKeyAlice, *PublicKeyAlice, error) {
|
||||
var a, e, pk, r poly
|
||||
var seed, noiseSeed [SeedBytes]byte
|
||||
|
||||
// seed <- Sample({0, 1}^256)
|
||||
if _, err := io.ReadFull(rand, seed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
seed = sha3.Sum256(seed[:]) // Don't send output of system RNG.
|
||||
// a <- Parse(SHAKE-128(seed))
|
||||
a.uniform(&seed, TorSampling)
|
||||
|
||||
// s, e <- Sample(psi(n, 12))
|
||||
if _, err := io.ReadFull(rand, noiseSeed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer memwipe(noiseSeed[:])
|
||||
privKey := new(PrivateKeyAlice)
|
||||
privKey.sk.getNoise(&noiseSeed, 0)
|
||||
privKey.sk.ntt()
|
||||
e.getNoise(&noiseSeed, 1)
|
||||
e.ntt()
|
||||
|
||||
// b <- as + e
|
||||
pubKey := new(PublicKeyAlice)
|
||||
r.pointwise(&privKey.sk, &a)
|
||||
pk.add(&e, &r)
|
||||
encodeA(pubKey.Send[:], &pk, &seed)
|
||||
|
||||
return privKey, pubKey, nil
|
||||
}
|
||||
|
||||
// PublicKeyBob is Bob's NewHope public key.
|
||||
type PublicKeyBob struct {
|
||||
Send [SendBSize]byte
|
||||
}
|
||||
|
||||
// KeyExchangeBob is the Responder side of the NewHope key exchange. The
|
||||
// shared secret and "public key" (key + reconciliation data) are generated
|
||||
// using the given reader, which must return random data.
|
||||
func KeyExchangeBob(rand io.Reader, alicePk *PublicKeyAlice) (*PublicKeyBob, []byte, error) {
|
||||
var pka, a, sp, ep, u, v, epp, r poly
|
||||
var seed, noiseSeed [SeedBytes]byte
|
||||
|
||||
if _, err := io.ReadFull(rand, noiseSeed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer memwipe(noiseSeed[:])
|
||||
|
||||
// a <- Parse(SHAKE-128(seed))
|
||||
decodeA(&pka, &seed, alicePk.Send[:])
|
||||
a.uniform(&seed, TorSampling)
|
||||
|
||||
// s', e', e'' <- Sample(psi(n, 12))
|
||||
sp.getNoise(&noiseSeed, 0)
|
||||
sp.ntt()
|
||||
ep.getNoise(&noiseSeed, 1)
|
||||
ep.ntt()
|
||||
epp.getNoise(&noiseSeed, 2)
|
||||
|
||||
// u <- as' + e'
|
||||
u.pointwise(&a, &sp)
|
||||
u.add(&u, &ep)
|
||||
|
||||
// v <- bs' + e''
|
||||
v.pointwise(&pka, &sp)
|
||||
v.invNtt()
|
||||
v.add(&v, &epp)
|
||||
|
||||
// r <- Sample(HelpRec(v))
|
||||
r.helpRec(&v, &noiseSeed, 3)
|
||||
|
||||
pubKey := new(PublicKeyBob)
|
||||
encodeB(pubKey.Send[:], &u, &r)
|
||||
|
||||
// nu <- Rec(v, r)
|
||||
var nu [SharedSecretSize]byte
|
||||
rec(&nu, &v, &r)
|
||||
|
||||
// mu <- SHA3-256(nu)
|
||||
mu := sha3.Sum256(nu[:])
|
||||
|
||||
// Scrub the sensitive stuff...
|
||||
memwipe(nu[:])
|
||||
sp.reset()
|
||||
v.reset()
|
||||
|
||||
return pubKey, mu[:], nil
|
||||
}
|
||||
|
||||
// KeyExchangeAlice is the Initiaitor side of the NewHope key exchange. The
|
||||
// provided private key is obliterated prior to returning.
|
||||
func KeyExchangeAlice(bobPk *PublicKeyBob, aliceSk *PrivateKeyAlice) ([]byte, error) {
|
||||
var u, r, vp poly
|
||||
|
||||
decodeB(&u, &r, bobPk.Send[:])
|
||||
|
||||
// v' <- us
|
||||
vp.pointwise(&aliceSk.sk, &u)
|
||||
vp.invNtt()
|
||||
|
||||
// nu <- Rec(v', r)
|
||||
var nu [SharedSecretSize]byte
|
||||
rec(&nu, &vp, &r)
|
||||
|
||||
// mu <- Sha3-256(nu)
|
||||
mu := sha3.Sum256(nu[:])
|
||||
|
||||
// Scrub the sensitive stuff...
|
||||
memwipe(nu[:])
|
||||
vp.reset()
|
||||
aliceSk.Reset()
|
||||
|
||||
return mu[:], nil
|
||||
}
|
||||
|
|
@ -0,0 +1,166 @@
|
|||
// newhope_simple.go - NewHope-Simple interface.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
const (
|
||||
// HighBytes is the length of the encoded secret in bytes.
|
||||
HighBytes = 384
|
||||
|
||||
// SendASimpleSize is the length of Alice's NewHope-Simple public key in
|
||||
// bytes.
|
||||
SendASimpleSize = PolyBytes + SeedBytes
|
||||
|
||||
// SendBSimpleSize is the length of Bob's NewHope-Simple public key in
|
||||
// bytes.
|
||||
SendBSimpleSize = PolyBytes + HighBytes
|
||||
)
|
||||
|
||||
func encodeBSimple(r []byte, b *poly, v *poly) {
|
||||
b.toBytes(r)
|
||||
v.compress(r[PolyBytes:])
|
||||
}
|
||||
|
||||
func decodeBSimple(b *poly, v *poly, r []byte) {
|
||||
b.fromBytes(r)
|
||||
v.decompress(r[PolyBytes:])
|
||||
}
|
||||
|
||||
// PublicKeySimpleAlice is Alice's NewHope-Simple public key.
|
||||
type PublicKeySimpleAlice struct {
|
||||
Send [SendASimpleSize]byte
|
||||
}
|
||||
|
||||
// PrivateKeySimpleAlice is Alice's NewHope-Simple private key.
|
||||
type PrivateKeySimpleAlice struct {
|
||||
sk poly
|
||||
}
|
||||
|
||||
// Reset clears all sensitive information such that it no longer appears in
|
||||
// memory.
|
||||
func (k *PrivateKeySimpleAlice) Reset() {
|
||||
k.sk.reset()
|
||||
}
|
||||
|
||||
// GenerateKeyPairSimpleAlice returns a NewHope-Simple private/public key pair.
|
||||
// The private key is generated using the given reader, which must return
|
||||
// random data. The receiver side of the key exchange (aka "Bob") MUST use
|
||||
// KeyExchangeSimpleBob() instead of this routine.
|
||||
func GenerateKeyPairSimpleAlice(rand io.Reader) (*PrivateKeySimpleAlice, *PublicKeySimpleAlice, error) {
|
||||
var a, e, pk, r poly
|
||||
var seed, noiseSeed [SeedBytes]byte
|
||||
|
||||
if _, err := io.ReadFull(rand, seed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
seed = sha3.Sum256(seed[:]) // Don't send output of system RNG.
|
||||
a.uniform(&seed, TorSampling)
|
||||
|
||||
if _, err := io.ReadFull(rand, noiseSeed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer memwipe(noiseSeed[:])
|
||||
|
||||
privKey := new(PrivateKeySimpleAlice)
|
||||
privKey.sk.getNoise(&noiseSeed, 0)
|
||||
privKey.sk.ntt()
|
||||
e.getNoise(&noiseSeed, 1)
|
||||
e.ntt()
|
||||
|
||||
pubKey := new(PublicKeySimpleAlice)
|
||||
r.pointwise(&privKey.sk, &a)
|
||||
pk.add(&e, &r)
|
||||
encodeA(pubKey.Send[:], &pk, &seed)
|
||||
|
||||
return privKey, pubKey, nil
|
||||
}
|
||||
|
||||
// PublicKeySimpleBob is Bob's NewHope-Simple public key.
|
||||
type PublicKeySimpleBob struct {
|
||||
Send [SendBSimpleSize]byte
|
||||
}
|
||||
|
||||
// KeyExchangeSimpleBob is the Responder side of the NewHope-Simple key
|
||||
// exchange. The shared secret and "public key" are generated using the
|
||||
// given reader, which must return random data.
|
||||
func KeyExchangeSimpleBob(rand io.Reader, alicePk *PublicKeySimpleAlice) (*PublicKeySimpleBob, []byte, error) {
|
||||
var pka, a, sp, ep, bp, v, epp, m poly
|
||||
var seed, noiseSeed [SeedBytes]byte
|
||||
|
||||
if _, err := io.ReadFull(rand, noiseSeed[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer memwipe(noiseSeed[:])
|
||||
|
||||
var sharedKey [SharedSecretSize]byte
|
||||
if _, err := io.ReadFull(rand, sharedKey[:]); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer memwipe(sharedKey[:])
|
||||
sharedKey = sha3.Sum256(sharedKey[:])
|
||||
m.fromMsg(sharedKey[:])
|
||||
|
||||
decodeA(&pka, &seed, alicePk.Send[:])
|
||||
a.uniform(&seed, TorSampling)
|
||||
|
||||
sp.getNoise(&noiseSeed, 0)
|
||||
sp.ntt()
|
||||
ep.getNoise(&noiseSeed, 1)
|
||||
ep.ntt()
|
||||
|
||||
bp.pointwise(&a, &sp)
|
||||
bp.add(&bp, &ep)
|
||||
|
||||
v.pointwise(&pka, &sp)
|
||||
v.invNtt()
|
||||
|
||||
epp.getNoise(&noiseSeed, 2)
|
||||
v.add(&v, &epp)
|
||||
v.add(&v, &m) // add key
|
||||
|
||||
pubKey := new(PublicKeySimpleBob)
|
||||
encodeBSimple(pubKey.Send[:], &bp, &v)
|
||||
mu := sha3.Sum256(sharedKey[:])
|
||||
|
||||
// Scrub the sensitive stuff...
|
||||
sp.reset()
|
||||
v.reset()
|
||||
m.reset()
|
||||
|
||||
return pubKey, mu[:], nil
|
||||
}
|
||||
|
||||
// KeyExchangeSimpleAlice is the Initiaitor side of the NewHope-Simple key
|
||||
// exchange. The provided private key is obliterated prior to returning.
|
||||
func KeyExchangeSimpleAlice(bobPk *PublicKeySimpleBob, aliceSk *PrivateKeySimpleAlice) ([]byte, error) {
|
||||
var v, bp, k poly
|
||||
|
||||
decodeBSimple(&bp, &v, bobPk.Send[:])
|
||||
k.pointwise(&aliceSk.sk, &bp)
|
||||
k.invNtt()
|
||||
|
||||
k.sub(&k, &v)
|
||||
|
||||
var sharedKey [SharedSecretSize]byte
|
||||
k.toMsg(sharedKey[:])
|
||||
|
||||
// mu <- Sha3-256(v')
|
||||
mu := sha3.Sum256(sharedKey[:])
|
||||
|
||||
// Scrub the sensitive stuff...
|
||||
memwipe(sharedKey[:])
|
||||
k.reset()
|
||||
aliceSk.Reset()
|
||||
|
||||
return mu[:], nil
|
||||
}
|
||||
|
|
@ -0,0 +1,131 @@
|
|||
// ntt.go - NewHope Number Theoretic Transform.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
var bitrevTable = [paramN]uint16{
|
||||
0, 512, 256, 768, 128, 640, 384, 896, 64, 576, 320, 832, 192, 704, 448, 960,
|
||||
32, 544, 288, 800, 160, 672, 416, 928, 96, 608, 352, 864, 224, 736, 480,
|
||||
992, 16, 528, 272, 784, 144, 656, 400, 912, 80, 592, 336, 848, 208, 720,
|
||||
464, 976, 48, 560, 304, 816, 176, 688, 432, 944, 112, 624, 368, 880,
|
||||
240, 752, 496, 1008, 8, 520, 264, 776, 136, 648, 392, 904, 72, 584, 328,
|
||||
840, 200, 712, 456, 968, 40, 552, 296, 808, 168, 680, 424, 936, 104,
|
||||
616, 360, 872, 232, 744, 488, 1000, 24, 536, 280, 792, 152, 664, 408,
|
||||
920, 88, 600, 344, 856, 216, 728, 472, 984, 56, 568, 312, 824, 184, 696,
|
||||
440, 952, 120, 632, 376, 888, 248, 760, 504, 1016, 4, 516, 260, 772,
|
||||
132, 644, 388, 900, 68, 580, 324, 836, 196, 708, 452, 964, 36, 548, 292,
|
||||
804, 164, 676, 420, 932, 100, 612, 356, 868, 228, 740, 484, 996, 20,
|
||||
532, 276, 788, 148, 660, 404, 916, 84, 596, 340, 852, 212, 724, 468,
|
||||
980, 52, 564, 308, 820, 180, 692, 436, 948, 116, 628, 372, 884, 244,
|
||||
756, 500, 1012, 12, 524, 268, 780, 140, 652, 396, 908, 76, 588, 332,
|
||||
844, 204, 716, 460, 972, 44, 556, 300, 812, 172, 684, 428, 940, 108,
|
||||
620, 364, 876, 236, 748, 492, 1004, 28, 540, 284, 796, 156, 668, 412,
|
||||
924, 92, 604, 348, 860, 220, 732, 476, 988, 60, 572, 316, 828, 188, 700,
|
||||
444, 956, 124, 636, 380, 892, 252, 764, 508, 1020, 2, 514, 258, 770,
|
||||
130, 642, 386, 898, 66, 578, 322, 834, 194, 706, 450, 962, 34, 546, 290,
|
||||
802, 162, 674, 418, 930, 98, 610, 354, 866, 226, 738, 482, 994, 18, 530,
|
||||
274, 786, 146, 658, 402, 914, 82, 594, 338, 850, 210, 722, 466, 978, 50,
|
||||
562, 306, 818, 178, 690, 434, 946, 114, 626, 370, 882, 242, 754, 498,
|
||||
1010, 10, 522, 266, 778, 138, 650, 394, 906, 74, 586, 330, 842, 202,
|
||||
714, 458, 970, 42, 554, 298, 810, 170, 682, 426, 938, 106, 618, 362,
|
||||
874, 234, 746, 490, 1002, 26, 538, 282, 794, 154, 666, 410, 922, 90,
|
||||
602, 346, 858, 218, 730, 474, 986, 58, 570, 314, 826, 186, 698, 442,
|
||||
954, 122, 634, 378, 890, 250, 762, 506, 1018, 6, 518, 262, 774, 134,
|
||||
646, 390, 902, 70, 582, 326, 838, 198, 710, 454, 966, 38, 550, 294, 806,
|
||||
166, 678, 422, 934, 102, 614, 358, 870, 230, 742, 486, 998, 22, 534,
|
||||
278, 790, 150, 662, 406, 918, 86, 598, 342, 854, 214, 726, 470, 982, 54,
|
||||
566, 310, 822, 182, 694, 438, 950, 118, 630, 374, 886, 246, 758, 502,
|
||||
1014, 14, 526, 270, 782, 142, 654, 398, 910, 78, 590, 334, 846, 206,
|
||||
718, 462, 974, 46, 558, 302, 814, 174, 686, 430, 942, 110, 622, 366,
|
||||
878, 238, 750, 494, 1006, 30, 542, 286, 798, 158, 670, 414, 926, 94,
|
||||
606, 350, 862, 222, 734, 478, 990, 62, 574, 318, 830, 190, 702, 446,
|
||||
958, 126, 638, 382, 894, 254, 766, 510, 1022, 1, 513, 257, 769, 129,
|
||||
641, 385, 897, 65, 577, 321, 833, 193, 705, 449, 961, 33, 545, 289, 801,
|
||||
161, 673, 417, 929, 97, 609, 353, 865, 225, 737, 481, 993, 17, 529, 273,
|
||||
785, 145, 657, 401, 913, 81, 593, 337, 849, 209, 721, 465, 977, 49, 561,
|
||||
305, 817, 177, 689, 433, 945, 113, 625, 369, 881, 241, 753, 497, 1009,
|
||||
9, 521, 265, 777, 137, 649, 393, 905, 73, 585, 329, 841, 201, 713, 457,
|
||||
969, 41, 553, 297, 809, 169, 681, 425, 937, 105, 617, 361, 873, 233,
|
||||
745, 489, 1001, 25, 537, 281, 793, 153, 665, 409, 921, 89, 601, 345,
|
||||
857, 217, 729, 473, 985, 57, 569, 313, 825, 185, 697, 441, 953, 121,
|
||||
633, 377, 889, 249, 761, 505, 1017, 5, 517, 261, 773, 133, 645, 389,
|
||||
901, 69, 581, 325, 837, 197, 709, 453, 965, 37, 549, 293, 805, 165, 677,
|
||||
421, 933, 101, 613, 357, 869, 229, 741, 485, 997, 21, 533, 277, 789,
|
||||
149, 661, 405, 917, 85, 597, 341, 853, 213, 725, 469, 981, 53, 565, 309,
|
||||
821, 181, 693, 437, 949, 117, 629, 373, 885, 245, 757, 501, 1013, 13,
|
||||
525, 269, 781, 141, 653, 397, 909, 77, 589, 333, 845, 205, 717, 461,
|
||||
973, 45, 557, 301, 813, 173, 685, 429, 941, 109, 621, 365, 877, 237,
|
||||
749, 493, 1005, 29, 541, 285, 797, 157, 669, 413, 925, 93, 605, 349,
|
||||
861, 221, 733, 477, 989, 61, 573, 317, 829, 189, 701, 445, 957, 125,
|
||||
637, 381, 893, 253, 765, 509, 1021, 3, 515, 259, 771, 131, 643, 387,
|
||||
899, 67, 579, 323, 835, 195, 707, 451, 963, 35, 547, 291, 803, 163, 675,
|
||||
419, 931, 99, 611, 355, 867, 227, 739, 483, 995, 19, 531, 275, 787, 147,
|
||||
659, 403, 915, 83, 595, 339, 851, 211, 723, 467, 979, 51, 563, 307, 819,
|
||||
179, 691, 435, 947, 115, 627, 371, 883, 243, 755, 499, 1011, 11, 523,
|
||||
267, 779, 139, 651, 395, 907, 75, 587, 331, 843, 203, 715, 459, 971, 43,
|
||||
555, 299, 811, 171, 683, 427, 939, 107, 619, 363, 875, 235, 747, 491,
|
||||
1003, 27, 539, 283, 795, 155, 667, 411, 923, 91, 603, 347, 859, 219,
|
||||
731, 475, 987, 59, 571, 315, 827, 187, 699, 443, 955, 123, 635, 379,
|
||||
891, 251, 763, 507, 1019, 7, 519, 263, 775, 135, 647, 391, 903, 71, 583,
|
||||
327, 839, 199, 711, 455, 967, 39, 551, 295, 807, 167, 679, 423, 935,
|
||||
103, 615, 359, 871, 231, 743, 487, 999, 23, 535, 279, 791, 151, 663,
|
||||
407, 919, 87, 599, 343, 855, 215, 727, 471, 983, 55, 567, 311, 823, 183,
|
||||
695, 439, 951, 119, 631, 375, 887, 247, 759, 503, 1015, 15, 527, 271,
|
||||
783, 143, 655, 399, 911, 79, 591, 335, 847, 207, 719, 463, 975, 47, 559,
|
||||
303, 815, 175, 687, 431, 943, 111, 623, 367, 879, 239, 751, 495, 1007,
|
||||
31, 543, 287, 799, 159, 671, 415, 927, 95, 607, 351, 863, 223, 735, 479,
|
||||
991, 63, 575, 319, 831, 191, 703, 447, 959, 127, 639, 383, 895, 255,
|
||||
767, 511, 1023,
|
||||
}
|
||||
|
||||
func (p *poly) bitrev() {
|
||||
for i, v := range p.coeffs {
|
||||
r := bitrevTable[i]
|
||||
if uint16(i) < r {
|
||||
p.coeffs[i] = p.coeffs[r]
|
||||
p.coeffs[r] = v
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) mulCoefficients(factors *[paramN]uint16) {
|
||||
for i, v := range factors {
|
||||
p.coeffs[i] = montgomeryReduce(uint32(p.coeffs[i]) * uint32(v))
|
||||
}
|
||||
}
|
||||
|
||||
func ntt(a *[paramN]uint16, omega *[paramN / 2]uint16) {
|
||||
var distance uint
|
||||
|
||||
for i := uint(0); i < 10; i += 2 {
|
||||
// Even level.
|
||||
distance = (1 << i)
|
||||
for start := uint(0); start < distance; start++ {
|
||||
jTwiddle := 0
|
||||
for j := start; j < paramN-1; j += 2 * distance {
|
||||
w := uint32(omega[jTwiddle])
|
||||
jTwiddle++
|
||||
tmp := a[j]
|
||||
a[j] = tmp + a[j+distance]
|
||||
a[j+distance] = montgomeryReduce(w * (uint32(tmp) + 3*paramQ - uint32(a[j+distance])))
|
||||
}
|
||||
}
|
||||
|
||||
// Odd level.
|
||||
distance <<= 1
|
||||
for start := uint(0); start < distance; start++ {
|
||||
jTwiddle := 0
|
||||
for j := start; j < paramN-1; j += 2 * distance {
|
||||
w := uint32(omega[jTwiddle])
|
||||
jTwiddle++
|
||||
tmp := a[j]
|
||||
a[j] = barrettReduce(tmp + a[j+distance])
|
||||
a[j+distance] = montgomeryReduce(w * (uint32(tmp) + 3*paramQ - uint32(a[j+distance])))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
// params.go - NewHope parameters.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
const (
|
||||
paramN = 1024
|
||||
paramK = 16 // used in sampler
|
||||
paramQ = 12289
|
||||
|
||||
// SeedBytes is the size of the seed in bytes.
|
||||
SeedBytes = 32
|
||||
)
|
||||
|
|
@ -0,0 +1,212 @@
|
|||
// poly.go - NewHope polynomial.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
|
||||
"blitter.com/go/chacha20"
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
const (
|
||||
// PolyBytes is the length of an encoded polynomial in bytes.
|
||||
PolyBytes = 1792
|
||||
|
||||
shake128Rate = 168 // Stupid that this isn't exposed.
|
||||
)
|
||||
|
||||
type poly struct {
|
||||
coeffs [paramN]uint16
|
||||
}
|
||||
|
||||
func (p *poly) reset() {
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) fromBytes(a []byte) {
|
||||
for i := 0; i < paramN/4; i++ {
|
||||
p.coeffs[4*i+0] = uint16(a[7*i+0]) | ((uint16(a[7*i+1]) & 0x3f) << 8)
|
||||
p.coeffs[4*i+1] = (uint16(a[7*i+1]) >> 6) | (uint16(a[7*i+2]) << 2) | ((uint16(a[7*i+3]) & 0x0f) << 10)
|
||||
|
||||
p.coeffs[4*i+2] = (uint16(a[7*i+3]) >> 4) | (uint16(a[7*i+4]) << 4) | ((uint16(a[7*i+5]) & 0x03) << 12)
|
||||
p.coeffs[4*i+3] = (uint16(a[7*i+5]) >> 2) | (uint16(a[7*i+6]) << 6)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) toBytes(r []byte) {
|
||||
for i := 0; i < paramN/4; i++ {
|
||||
// Make sure that coefficients have only 14 bits.
|
||||
t0 := barrettReduce(p.coeffs[4*i+0])
|
||||
t1 := barrettReduce(p.coeffs[4*i+1])
|
||||
t2 := barrettReduce(p.coeffs[4*i+2])
|
||||
t3 := barrettReduce(p.coeffs[4*i+3])
|
||||
|
||||
// Make sure that coefficients are in [0,q]
|
||||
m := t0 - paramQ
|
||||
c := int16(m)
|
||||
c >>= 15
|
||||
t0 = m ^ ((t0 ^ m) & uint16(c))
|
||||
|
||||
m = t1 - paramQ
|
||||
c = int16(m)
|
||||
c >>= 15
|
||||
t1 = m ^ ((t1 ^ m) & uint16(c))
|
||||
|
||||
m = t2 - paramQ
|
||||
c = int16(m)
|
||||
c >>= 15
|
||||
t2 = m ^ ((t2 ^ m) & uint16(c))
|
||||
|
||||
m = t3 - paramQ
|
||||
c = int16(m)
|
||||
c >>= 15
|
||||
t3 = m ^ ((t3 ^ m) & uint16(c))
|
||||
|
||||
r[7*i+0] = byte(t0 & 0xff)
|
||||
r[7*i+1] = byte(t0>>8) | byte(t1<<6)
|
||||
r[7*i+2] = byte(t1 >> 2)
|
||||
r[7*i+3] = byte(t1>>10) | byte(t2<<4)
|
||||
r[7*i+4] = byte(t2 >> 4)
|
||||
r[7*i+5] = byte(t2>>12) | byte(t3<<2)
|
||||
r[7*i+6] = byte(t3 >> 6)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) discardTo(xbuf []byte) bool {
|
||||
var x [shake128Rate * 16 / 2]uint16
|
||||
for i := range x {
|
||||
x[i] = binary.LittleEndian.Uint16(xbuf[i*2:])
|
||||
}
|
||||
|
||||
for i := 0; i < 16; i++ {
|
||||
batcher84(x[i:])
|
||||
}
|
||||
|
||||
// Check whether we're safe:
|
||||
r := int(0)
|
||||
for i := 1000; i < 1024; i++ {
|
||||
r |= 61444 - int(x[i])
|
||||
}
|
||||
if r>>31 != 0 {
|
||||
return true
|
||||
}
|
||||
|
||||
// If we are, copy coefficients to polynomial:
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = x[i]
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func (p *poly) uniform(seed *[SeedBytes]byte, torSampling bool) {
|
||||
if !torSampling {
|
||||
// Reference version, vartime.
|
||||
nBlocks := 14
|
||||
var buf [shake128Rate * 14]byte
|
||||
|
||||
// h and buf are left unscrubbed because the output is public.
|
||||
h := sha3.NewShake128()
|
||||
_, _ = h.Write(seed[:])
|
||||
_, _ = h.Read(buf[:])
|
||||
|
||||
for ctr, pos := 0, 0; ctr < paramN; {
|
||||
val := binary.LittleEndian.Uint16(buf[pos:])
|
||||
|
||||
if val < 5*paramQ {
|
||||
p.coeffs[ctr] = val
|
||||
ctr++
|
||||
}
|
||||
pos += 2
|
||||
if pos > shake128Rate*nBlocks-2 {
|
||||
nBlocks = 1
|
||||
_, _ = h.Read(buf[:shake128Rate])
|
||||
pos = 0
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// `torref` version, every valid `a` is generate in constant time,
|
||||
// though the number of attempts varies.
|
||||
const nBlocks = 16
|
||||
var buf [shake128Rate * nBlocks]byte
|
||||
|
||||
// h and buf are left unscrubbed because the output is public.
|
||||
h := sha3.NewShake128()
|
||||
_, _ = h.Write(seed[:])
|
||||
|
||||
for {
|
||||
_, _ = h.Read(buf[:])
|
||||
if !p.discardTo(buf[:]) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) getNoise(seed *[SeedBytes]byte, nonce byte) {
|
||||
// The `ref` code uses a uint32 vector instead of a byte vector,
|
||||
// but converting between the two in Go is cumbersome.
|
||||
var buf [4 * paramN]byte
|
||||
var n [8]byte
|
||||
|
||||
n[0] = nonce
|
||||
stream, err := chacha20.New(seed[:], n[:])
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
stream.KeyStream(buf[:])
|
||||
stream.Reset()
|
||||
|
||||
for i := 0; i < paramN; i++ {
|
||||
t := binary.LittleEndian.Uint32(buf[4*i:])
|
||||
d := uint32(0)
|
||||
for j := uint(0); j < 8; j++ {
|
||||
d += (t >> j) & 0x01010101
|
||||
}
|
||||
a := ((d >> 8) & 0xff) + (d & 0xff)
|
||||
b := (d >> 24) + ((d >> 16) & 0xff)
|
||||
p.coeffs[i] = uint16(a) + paramQ - uint16(b)
|
||||
}
|
||||
|
||||
// Scrub the random bits...
|
||||
memwipe(buf[:])
|
||||
}
|
||||
|
||||
func (p *poly) pointwise(a, b *poly) {
|
||||
for i := range p.coeffs {
|
||||
t := montgomeryReduce(3186 * uint32(b.coeffs[i])) // t is now in Montgomery domain
|
||||
p.coeffs[i] = montgomeryReduce(uint32(a.coeffs[i]) * uint32(t)) // p.coeffs[i] is back in normal domain
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) add(a, b *poly) {
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = barrettReduce(a.coeffs[i] + b.coeffs[i])
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) ntt() {
|
||||
p.mulCoefficients(&psisBitrevMontgomery)
|
||||
ntt(&p.coeffs, &omegasMontgomery)
|
||||
}
|
||||
|
||||
func (p *poly) invNtt() {
|
||||
p.bitrev()
|
||||
ntt(&p.coeffs, &omegasInvMontgomery)
|
||||
p.mulCoefficients(&psisInvMontgomery)
|
||||
}
|
||||
|
||||
func init() {
|
||||
if paramK != 16 {
|
||||
panic("poly.getNoise() only supports k=16")
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
// poly_simple.go - NewHope-Simple polynomial.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
func coeffFreeze(x uint16) uint16 {
|
||||
var c int16
|
||||
|
||||
r := barrettReduce(x)
|
||||
m := r - paramQ
|
||||
c = int16(m)
|
||||
c >>= 15
|
||||
r = m ^ ((r ^ m) & uint16(c))
|
||||
|
||||
return r
|
||||
}
|
||||
|
||||
// Computes abs(x-Q/2)
|
||||
func flipAbs(x uint16) uint16 {
|
||||
r := int16(coeffFreeze(x))
|
||||
r = r - paramQ/2
|
||||
m := r >> 15
|
||||
return uint16((r + m) ^ m)
|
||||
}
|
||||
|
||||
func (p *poly) compress(r []byte) {
|
||||
var t [8]uint32
|
||||
|
||||
for i, k := 0, 0; i < paramN; i, k = i+8, k+3 {
|
||||
for j := range t {
|
||||
t[j] = uint32(coeffFreeze(p.coeffs[i+j]))
|
||||
t[j] = (((t[j] << 3) + paramQ/2) / paramQ) & 0x7
|
||||
}
|
||||
|
||||
r[k] = byte(t[0]) | byte(t[1]<<3) | byte(t[2]<<6)
|
||||
r[k+1] = byte(t[2]>>2) | byte(t[3]<<1) | byte(t[4]<<4) | byte(t[5]<<7)
|
||||
r[k+2] = byte(t[5]>>1) | byte(t[6]<<2) | byte(t[7]<<5)
|
||||
}
|
||||
|
||||
for i := range t {
|
||||
t[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) decompress(a []byte) {
|
||||
for i := 0; i < paramN; i += 8 {
|
||||
a0, a1, a2 := uint16(a[0]), uint16(a[1]), uint16(a[2])
|
||||
p.coeffs[i+0] = a0 & 7
|
||||
p.coeffs[i+1] = (a0 >> 3) & 7
|
||||
p.coeffs[i+2] = (a0 >> 6) | ((a1 << 2) & 4)
|
||||
p.coeffs[i+3] = (a1 >> 1) & 7
|
||||
p.coeffs[i+4] = (a1 >> 4) & 7
|
||||
p.coeffs[i+5] = (a1 >> 7) | ((a2 << 1) & 6)
|
||||
p.coeffs[i+6] = (a2 >> 2) & 7
|
||||
p.coeffs[i+7] = (a2 >> 5)
|
||||
a = a[3:]
|
||||
for j := 0; j < 8; j++ {
|
||||
p.coeffs[i+j] = uint16((uint32(p.coeffs[i+j])*paramQ + 4) >> 3)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) fromMsg(msg []byte) {
|
||||
for i := uint(0); i < 32; i++ { // XXX: const for 32
|
||||
for j := uint(0); j < 8; j++ {
|
||||
mask := -(uint16((msg[i] >> j) & 1))
|
||||
p.coeffs[8*i+j+0] = mask & (paramQ / 2)
|
||||
p.coeffs[8*i+j+256] = mask & (paramQ / 2)
|
||||
p.coeffs[8*i+j+512] = mask & (paramQ / 2)
|
||||
p.coeffs[8*i+j+768] = mask & (paramQ / 2)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) toMsg(msg []byte) {
|
||||
memwipe(msg[0:32])
|
||||
|
||||
for i := uint(0); i < 256; i++ {
|
||||
t := flipAbs(p.coeffs[i+0])
|
||||
t += flipAbs(p.coeffs[i+256])
|
||||
t += flipAbs(p.coeffs[i+512])
|
||||
t += flipAbs(p.coeffs[i+768])
|
||||
|
||||
//t = (~(t - PARAM_Q));
|
||||
t = (t - paramQ)
|
||||
t >>= 15
|
||||
msg[i>>3] |= byte(t << (i & 7))
|
||||
}
|
||||
}
|
||||
|
||||
func (p *poly) sub(a, b *poly) {
|
||||
for i := range p.coeffs {
|
||||
p.coeffs[i] = barrettReduce(a.coeffs[i] + 3*paramQ - b.coeffs[i])
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,287 @@
|
|||
// precomp.go - NewHope precomputed tables.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
var omegasMontgomery = [paramN / 2]uint16{
|
||||
4075, 6974, 7373, 7965, 3262, 5079, 522, 2169, 6364, 1018, 1041, 8775, 2344,
|
||||
11011, 5574, 1973, 4536, 1050, 6844, 3860, 3818, 6118, 2683, 1190, 4789,
|
||||
7822, 7540, 6752, 5456, 4449, 3789, 12142, 11973, 382, 3988, 468, 6843,
|
||||
5339, 6196, 3710, 11316, 1254, 5435, 10930, 3998, 10256, 10367, 3879,
|
||||
11889, 1728, 6137, 4948, 5862, 6136, 3643, 6874, 8724, 654, 10302, 1702,
|
||||
7083, 6760, 56, 3199, 9987, 605, 11785, 8076, 5594, 9260, 6403, 4782,
|
||||
6212, 4624, 9026, 8689, 4080, 11868, 6221, 3602, 975, 8077, 8851, 9445,
|
||||
5681, 3477, 1105, 142, 241, 12231, 1003, 3532, 5009, 1956, 6008, 11404,
|
||||
7377, 2049, 10968, 12097, 7591, 5057, 3445, 4780, 2920, 7048, 3127,
|
||||
8120, 11279, 6821, 11502, 8807, 12138, 2127, 2839, 3957, 431, 1579,
|
||||
6383, 9784, 5874, 677, 3336, 6234, 2766, 1323, 9115, 12237, 2031, 6956,
|
||||
6413, 2281, 3969, 3991, 12133, 9522, 4737, 10996, 4774, 5429, 11871,
|
||||
3772, 453, 5908, 2882, 1805, 2051, 1954, 11713, 3963, 2447, 6142, 8174,
|
||||
3030, 1843, 2361, 12071, 2908, 3529, 3434, 3202, 7796, 2057, 5369,
|
||||
11939, 1512, 6906, 10474, 11026, 49, 10806, 5915, 1489, 9789, 5942,
|
||||
10706, 10431, 7535, 426, 8974, 3757, 10314, 9364, 347, 5868, 9551, 9634,
|
||||
6554, 10596, 9280, 11566, 174, 2948, 2503, 6507, 10723, 11606, 2459, 64,
|
||||
3656, 8455, 5257, 5919, 7856, 1747, 9166, 5486, 9235, 6065, 835, 3570,
|
||||
4240, 11580, 4046, 10970, 9139, 1058, 8210, 11848, 922, 7967, 1958,
|
||||
10211, 1112, 3728, 4049, 11130, 5990, 1404, 325, 948, 11143, 6190, 295,
|
||||
11637, 5766, 8212, 8273, 2919, 8527, 6119, 6992, 8333, 1360, 2555, 6167,
|
||||
1200, 7105, 7991, 3329, 9597, 12121, 5106, 5961, 10695, 10327, 3051,
|
||||
9923, 4896, 9326, 81, 3091, 1000, 7969, 4611, 726, 1853, 12149, 4255,
|
||||
11112, 2768, 10654, 1062, 2294, 3553, 4805, 2747, 4846, 8577, 9154,
|
||||
1170, 2319, 790, 11334, 9275, 9088, 1326, 5086, 9094, 6429, 11077,
|
||||
10643, 3504, 3542, 8668, 9744, 1479, 1, 8246, 7143, 11567, 10984, 4134,
|
||||
5736, 4978, 10938, 5777, 8961, 4591, 5728, 6461, 5023, 9650, 7468, 949,
|
||||
9664, 2975, 11726, 2744, 9283, 10092, 5067, 12171, 2476, 3748, 11336,
|
||||
6522, 827, 9452, 5374, 12159, 7935, 3296, 3949, 9893, 4452, 10908, 2525,
|
||||
3584, 8112, 8011, 10616, 4989, 6958, 11809, 9447, 12280, 1022, 11950,
|
||||
9821, 11745, 5791, 5092, 2089, 9005, 2881, 3289, 2013, 9048, 729, 7901,
|
||||
1260, 5755, 4632, 11955, 2426, 10593, 1428, 4890, 5911, 3932, 9558,
|
||||
8830, 3637, 5542, 145, 5179, 8595, 3707, 10530, 355, 3382, 4231, 9741,
|
||||
1207, 9041, 7012, 1168, 10146, 11224, 4645, 11885, 10911, 10377, 435,
|
||||
7952, 4096, 493, 9908, 6845, 6039, 2422, 2187, 9723, 8643, 9852, 9302,
|
||||
6022, 7278, 1002, 4284, 5088, 1607, 7313, 875, 8509, 9430, 1045, 2481,
|
||||
5012, 7428, 354, 6591, 9377, 11847, 2401, 1067, 7188, 11516, 390, 8511,
|
||||
8456, 7270, 545, 8585, 9611, 12047, 1537, 4143, 4714, 4885, 1017, 5084,
|
||||
1632, 3066, 27, 1440, 8526, 9273, 12046, 11618, 9289, 3400, 9890, 3136,
|
||||
7098, 8758, 11813, 7384, 3985, 11869, 6730, 10745, 10111, 2249, 4048,
|
||||
2884, 11136, 2126, 1630, 9103, 5407, 2686, 9042, 2969, 8311, 9424, 9919,
|
||||
8779, 5332, 10626, 1777, 4654, 10863, 7351, 3636, 9585, 5291, 8374,
|
||||
2166, 4919, 12176, 9140, 12129, 7852, 12286, 4895, 10805, 2780, 5195,
|
||||
2305, 7247, 9644, 4053, 10600, 3364, 3271, 4057, 4414, 9442, 7917, 2174,
|
||||
}
|
||||
|
||||
var omegasInvMontgomery = [paramN / 2]uint16{
|
||||
4075, 5315, 4324, 4916, 10120, 11767, 7210, 9027, 10316, 6715, 1278, 9945,
|
||||
3514, 11248, 11271, 5925, 147, 8500, 7840, 6833, 5537, 4749, 4467, 7500,
|
||||
11099, 9606, 6171, 8471, 8429, 5445, 11239, 7753, 9090, 12233, 5529,
|
||||
5206, 10587, 1987, 11635, 3565, 5415, 8646, 6153, 6427, 7341, 6152,
|
||||
10561, 400, 8410, 1922, 2033, 8291, 1359, 6854, 11035, 973, 8579, 6093,
|
||||
6950, 5446, 11821, 8301, 11907, 316, 52, 3174, 10966, 9523, 6055, 8953,
|
||||
11612, 6415, 2505, 5906, 10710, 11858, 8332, 9450, 10162, 151, 3482,
|
||||
787, 5468, 1010, 4169, 9162, 5241, 9369, 7509, 8844, 7232, 4698, 192,
|
||||
1321, 10240, 4912, 885, 6281, 10333, 7280, 8757, 11286, 58, 12048,
|
||||
12147, 11184, 8812, 6608, 2844, 3438, 4212, 11314, 8687, 6068, 421,
|
||||
8209, 3600, 3263, 7665, 6077, 7507, 5886, 3029, 6695, 4213, 504, 11684,
|
||||
2302, 1962, 1594, 6328, 7183, 168, 2692, 8960, 4298, 5184, 11089, 6122,
|
||||
9734, 10929, 3956, 5297, 6170, 3762, 9370, 4016, 4077, 6523, 652, 11994,
|
||||
6099, 1146, 11341, 11964, 10885, 6299, 1159, 8240, 8561, 11177, 2078,
|
||||
10331, 4322, 11367, 441, 4079, 11231, 3150, 1319, 8243, 709, 8049, 8719,
|
||||
11454, 6224, 3054, 6803, 3123, 10542, 4433, 6370, 7032, 3834, 8633,
|
||||
12225, 9830, 683, 1566, 5782, 9786, 9341, 12115, 723, 3009, 1693, 5735,
|
||||
2655, 2738, 6421, 11942, 2925, 1975, 8532, 3315, 11863, 4754, 1858,
|
||||
1583, 6347, 2500, 10800, 6374, 1483, 12240, 1263, 1815, 5383, 10777,
|
||||
350, 6920, 10232, 4493, 9087, 8855, 8760, 9381, 218, 9928, 10446, 9259,
|
||||
4115, 6147, 9842, 8326, 576, 10335, 10238, 10484, 9407, 6381, 11836,
|
||||
8517, 418, 6860, 7515, 1293, 7552, 2767, 156, 8298, 8320, 10008, 5876,
|
||||
5333, 10258, 10115, 4372, 2847, 7875, 8232, 9018, 8925, 1689, 8236,
|
||||
2645, 5042, 9984, 7094, 9509, 1484, 7394, 3, 4437, 160, 3149, 113, 7370,
|
||||
10123, 3915, 6998, 2704, 8653, 4938, 1426, 7635, 10512, 1663, 6957,
|
||||
3510, 2370, 2865, 3978, 9320, 3247, 9603, 6882, 3186, 10659, 10163,
|
||||
1153, 9405, 8241, 10040, 2178, 1544, 5559, 420, 8304, 4905, 476, 3531,
|
||||
5191, 9153, 2399, 8889, 3000, 671, 243, 3016, 3763, 10849, 12262, 9223,
|
||||
10657, 7205, 11272, 7404, 7575, 8146, 10752, 242, 2678, 3704, 11744,
|
||||
5019, 3833, 3778, 11899, 773, 5101, 11222, 9888, 442, 2912, 5698, 11935,
|
||||
4861, 7277, 9808, 11244, 2859, 3780, 11414, 4976, 10682, 7201, 8005,
|
||||
11287, 5011, 6267, 2987, 2437, 3646, 2566, 10102, 9867, 6250, 5444,
|
||||
2381, 11796, 8193, 4337, 11854, 1912, 1378, 404, 7644, 1065, 2143,
|
||||
11121, 5277, 3248, 11082, 2548, 8058, 8907, 11934, 1759, 8582, 3694,
|
||||
7110, 12144, 6747, 8652, 3459, 2731, 8357, 6378, 7399, 10861, 1696,
|
||||
9863, 334, 7657, 6534, 11029, 4388, 11560, 3241, 10276, 9000, 9408,
|
||||
3284, 10200, 7197, 6498, 544, 2468, 339, 11267, 9, 2842, 480, 5331,
|
||||
7300, 1673, 4278, 4177, 8705, 9764, 1381, 7837, 2396, 8340, 8993, 4354,
|
||||
130, 6915, 2837, 11462, 5767, 953, 8541, 9813, 118, 7222, 2197, 3006,
|
||||
9545, 563, 9314, 2625, 11340, 4821, 2639, 7266, 5828, 6561, 7698, 3328,
|
||||
6512, 1351, 7311, 6553, 8155, 1305, 722, 5146, 4043, 12288, 10810, 2545,
|
||||
3621, 8747, 8785, 1646, 1212, 5860, 3195, 7203, 10963, 3201, 3014, 955,
|
||||
11499, 9970, 11119, 3135, 3712, 7443, 9542, 7484, 8736, 9995, 11227,
|
||||
1635, 9521, 1177, 8034, 140, 10436, 11563, 7678, 4320, 11289, 9198,
|
||||
12208, 2963, 7393, 2366, 9238,
|
||||
}
|
||||
|
||||
var psisBitrevMontgomery = [paramN]uint16{
|
||||
4075, 6974, 7373, 7965, 3262, 5079, 522, 2169, 6364, 1018, 1041, 8775, 2344,
|
||||
11011, 5574, 1973, 4536, 1050, 6844, 3860, 3818, 6118, 2683, 1190, 4789,
|
||||
7822, 7540, 6752, 5456, 4449, 3789, 12142, 11973, 382, 3988, 468, 6843,
|
||||
5339, 6196, 3710, 11316, 1254, 5435, 10930, 3998, 10256, 10367, 3879,
|
||||
11889, 1728, 6137, 4948, 5862, 6136, 3643, 6874, 8724, 654, 10302, 1702,
|
||||
7083, 6760, 56, 3199, 9987, 605, 11785, 8076, 5594, 9260, 6403, 4782,
|
||||
6212, 4624, 9026, 8689, 4080, 11868, 6221, 3602, 975, 8077, 8851, 9445,
|
||||
5681, 3477, 1105, 142, 241, 12231, 1003, 3532, 5009, 1956, 6008, 11404,
|
||||
7377, 2049, 10968, 12097, 7591, 5057, 3445, 4780, 2920, 7048, 3127,
|
||||
8120, 11279, 6821, 11502, 8807, 12138, 2127, 2839, 3957, 431, 1579,
|
||||
6383, 9784, 5874, 677, 3336, 6234, 2766, 1323, 9115, 12237, 2031, 6956,
|
||||
6413, 2281, 3969, 3991, 12133, 9522, 4737, 10996, 4774, 5429, 11871,
|
||||
3772, 453, 5908, 2882, 1805, 2051, 1954, 11713, 3963, 2447, 6142, 8174,
|
||||
3030, 1843, 2361, 12071, 2908, 3529, 3434, 3202, 7796, 2057, 5369,
|
||||
11939, 1512, 6906, 10474, 11026, 49, 10806, 5915, 1489, 9789, 5942,
|
||||
10706, 10431, 7535, 426, 8974, 3757, 10314, 9364, 347, 5868, 9551, 9634,
|
||||
6554, 10596, 9280, 11566, 174, 2948, 2503, 6507, 10723, 11606, 2459, 64,
|
||||
3656, 8455, 5257, 5919, 7856, 1747, 9166, 5486, 9235, 6065, 835, 3570,
|
||||
4240, 11580, 4046, 10970, 9139, 1058, 8210, 11848, 922, 7967, 1958,
|
||||
10211, 1112, 3728, 4049, 11130, 5990, 1404, 325, 948, 11143, 6190, 295,
|
||||
11637, 5766, 8212, 8273, 2919, 8527, 6119, 6992, 8333, 1360, 2555, 6167,
|
||||
1200, 7105, 7991, 3329, 9597, 12121, 5106, 5961, 10695, 10327, 3051,
|
||||
9923, 4896, 9326, 81, 3091, 1000, 7969, 4611, 726, 1853, 12149, 4255,
|
||||
11112, 2768, 10654, 1062, 2294, 3553, 4805, 2747, 4846, 8577, 9154,
|
||||
1170, 2319, 790, 11334, 9275, 9088, 1326, 5086, 9094, 6429, 11077,
|
||||
10643, 3504, 3542, 8668, 9744, 1479, 1, 8246, 7143, 11567, 10984, 4134,
|
||||
5736, 4978, 10938, 5777, 8961, 4591, 5728, 6461, 5023, 9650, 7468, 949,
|
||||
9664, 2975, 11726, 2744, 9283, 10092, 5067, 12171, 2476, 3748, 11336,
|
||||
6522, 827, 9452, 5374, 12159, 7935, 3296, 3949, 9893, 4452, 10908, 2525,
|
||||
3584, 8112, 8011, 10616, 4989, 6958, 11809, 9447, 12280, 1022, 11950,
|
||||
9821, 11745, 5791, 5092, 2089, 9005, 2881, 3289, 2013, 9048, 729, 7901,
|
||||
1260, 5755, 4632, 11955, 2426, 10593, 1428, 4890, 5911, 3932, 9558,
|
||||
8830, 3637, 5542, 145, 5179, 8595, 3707, 10530, 355, 3382, 4231, 9741,
|
||||
1207, 9041, 7012, 1168, 10146, 11224, 4645, 11885, 10911, 10377, 435,
|
||||
7952, 4096, 493, 9908, 6845, 6039, 2422, 2187, 9723, 8643, 9852, 9302,
|
||||
6022, 7278, 1002, 4284, 5088, 1607, 7313, 875, 8509, 9430, 1045, 2481,
|
||||
5012, 7428, 354, 6591, 9377, 11847, 2401, 1067, 7188, 11516, 390, 8511,
|
||||
8456, 7270, 545, 8585, 9611, 12047, 1537, 4143, 4714, 4885, 1017, 5084,
|
||||
1632, 3066, 27, 1440, 8526, 9273, 12046, 11618, 9289, 3400, 9890, 3136,
|
||||
7098, 8758, 11813, 7384, 3985, 11869, 6730, 10745, 10111, 2249, 4048,
|
||||
2884, 11136, 2126, 1630, 9103, 5407, 2686, 9042, 2969, 8311, 9424, 9919,
|
||||
8779, 5332, 10626, 1777, 4654, 10863, 7351, 3636, 9585, 5291, 8374,
|
||||
2166, 4919, 12176, 9140, 12129, 7852, 12286, 4895, 10805, 2780, 5195,
|
||||
2305, 7247, 9644, 4053, 10600, 3364, 3271, 4057, 4414, 9442, 7917, 2174,
|
||||
3947, 11951, 2455, 6599, 10545, 10975, 3654, 2894, 7681, 7126, 7287,
|
||||
12269, 4119, 3343, 2151, 1522, 7174, 7350, 11041, 2442, 2148, 5959,
|
||||
6492, 8330, 8945, 5598, 3624, 10397, 1325, 6565, 1945, 11260, 10077,
|
||||
2674, 3338, 3276, 11034, 506, 6505, 1392, 5478, 8778, 1178, 2776, 3408,
|
||||
10347, 11124, 2575, 9489, 12096, 6092, 10058, 4167, 6085, 923, 11251,
|
||||
11912, 4578, 10669, 11914, 425, 10453, 392, 10104, 8464, 4235, 8761,
|
||||
7376, 2291, 3375, 7954, 8896, 6617, 7790, 1737, 11667, 3982, 9342, 6680,
|
||||
636, 6825, 7383, 512, 4670, 2900, 12050, 7735, 994, 1687, 11883, 7021,
|
||||
146, 10485, 1403, 5189, 6094, 2483, 2054, 3042, 10945, 3981, 10821,
|
||||
11826, 8882, 8151, 180, 9600, 7684, 5219, 10880, 6780, 204, 11232, 2600,
|
||||
7584, 3121, 3017, 11053, 7814, 7043, 4251, 4739, 11063, 6771, 7073,
|
||||
9261, 2360, 11925, 1928, 11825, 8024, 3678, 3205, 3359, 11197, 5209,
|
||||
8581, 3238, 8840, 1136, 9363, 1826, 3171, 4489, 7885, 346, 2068, 1389,
|
||||
8257, 3163, 4840, 6127, 8062, 8921, 612, 4238, 10763, 8067, 125, 11749,
|
||||
10125, 5416, 2110, 716, 9839, 10584, 11475, 11873, 3448, 343, 1908,
|
||||
4538, 10423, 7078, 4727, 1208, 11572, 3589, 2982, 1373, 1721, 10753,
|
||||
4103, 2429, 4209, 5412, 5993, 9011, 438, 3515, 7228, 1218, 8347, 5232,
|
||||
8682, 1327, 7508, 4924, 448, 1014, 10029, 12221, 4566, 5836, 12229,
|
||||
2717, 1535, 3200, 5588, 5845, 412, 5102, 7326, 3744, 3056, 2528, 7406,
|
||||
8314, 9202, 6454, 6613, 1417, 10032, 7784, 1518, 3765, 4176, 5063, 9828,
|
||||
2275, 6636, 4267, 6463, 2065, 7725, 3495, 8328, 8755, 8144, 10533, 5966,
|
||||
12077, 9175, 9520, 5596, 6302, 8400, 579, 6781, 11014, 5734, 11113,
|
||||
11164, 4860, 1131, 10844, 9068, 8016, 9694, 3837, 567, 9348, 7000, 6627,
|
||||
7699, 5082, 682, 11309, 5207, 4050, 7087, 844, 7434, 3769, 293, 9057,
|
||||
6940, 9344, 10883, 2633, 8190, 3944, 5530, 5604, 3480, 2171, 9282,
|
||||
11024, 2213, 8136, 3805, 767, 12239, 216, 11520, 6763, 10353, 7, 8566,
|
||||
845, 7235, 3154, 4360, 3285, 10268, 2832, 3572, 1282, 7559, 3229, 8360,
|
||||
10583, 6105, 3120, 6643, 6203, 8536, 8348, 6919, 3536, 9199, 10891,
|
||||
11463, 5043, 1658, 5618, 8787, 5789, 4719, 751, 11379, 6389, 10783,
|
||||
3065, 7806, 6586, 2622, 5386, 510, 7628, 6921, 578, 10345, 11839, 8929,
|
||||
4684, 12226, 7154, 9916, 7302, 8481, 3670, 11066, 2334, 1590, 7878,
|
||||
10734, 1802, 1891, 5103, 6151, 8820, 3418, 7846, 9951, 4693, 417, 9996,
|
||||
9652, 4510, 2946, 5461, 365, 881, 1927, 1015, 11675, 11009, 1371, 12265,
|
||||
2485, 11385, 5039, 6742, 8449, 1842, 12217, 8176, 9577, 4834, 7937,
|
||||
9461, 2643, 11194, 3045, 6508, 4094, 3451, 7911, 11048, 5406, 4665,
|
||||
3020, 6616, 11345, 7519, 3669, 5287, 1790, 7014, 5410, 11038, 11249,
|
||||
2035, 6125, 10407, 4565, 7315, 5078, 10506, 2840, 2478, 9270, 4194,
|
||||
9195, 4518, 7469, 1160, 6878, 2730, 10421, 10036, 1734, 3815, 10939,
|
||||
5832, 10595, 10759, 4423, 8420, 9617, 7119, 11010, 11424, 9173, 189,
|
||||
10080, 10526, 3466, 10588, 7592, 3578, 11511, 7785, 9663, 530, 12150,
|
||||
8957, 2532, 3317, 9349, 10243, 1481, 9332, 3454, 3758, 7899, 4218, 2593,
|
||||
11410, 2276, 982, 6513, 1849, 8494, 9021, 4523, 7988, 8, 457, 648, 150,
|
||||
8000, 2307, 2301, 874, 5650, 170, 9462, 2873, 9855, 11498, 2535, 11169,
|
||||
5808, 12268, 9687, 1901, 7171, 11787, 3846, 1573, 6063, 3793, 466,
|
||||
11259, 10608, 3821, 6320, 4649, 6263, 2929,
|
||||
}
|
||||
|
||||
var psisInvMontgomery = [paramN]uint16{
|
||||
256, 10570, 1510, 7238, 1034, 7170, 6291, 7921, 11665, 3422, 4000, 2327,
|
||||
2088, 5565, 795, 10647, 1521, 5484, 2539, 7385, 1055, 7173, 8047, 11683,
|
||||
1669, 1994, 3796, 5809, 4341, 9398, 11876, 12230, 10525, 12037, 12253,
|
||||
3506, 4012, 9351, 4847, 2448, 7372, 9831, 3160, 2207, 5582, 2553, 7387,
|
||||
6322, 9681, 1383, 10731, 1533, 219, 5298, 4268, 7632, 6357, 9686, 8406,
|
||||
4712, 9451, 10128, 4958, 5975, 11387, 8649, 11769, 6948, 11526, 12180,
|
||||
1740, 10782, 6807, 2728, 7412, 4570, 4164, 4106, 11120, 12122, 8754,
|
||||
11784, 3439, 5758, 11356, 6889, 9762, 11928, 1704, 1999, 10819, 12079,
|
||||
12259, 7018, 11536, 1648, 1991, 2040, 2047, 2048, 10826, 12080, 8748,
|
||||
8272, 8204, 1172, 1923, 7297, 2798, 7422, 6327, 4415, 7653, 6360, 11442,
|
||||
12168, 7005, 8023, 9924, 8440, 8228, 2931, 7441, 1063, 3663, 5790, 9605,
|
||||
10150, 1450, 8985, 11817, 10466, 10273, 12001, 3470, 7518, 1074, 1909,
|
||||
7295, 9820, 4914, 702, 5367, 7789, 8135, 9940, 1420, 3714, 11064, 12114,
|
||||
12264, 1752, 5517, 9566, 11900, 1700, 3754, 5803, 829, 1874, 7290, 2797,
|
||||
10933, 5073, 7747, 8129, 6428, 6185, 11417, 1631, 233, 5300, 9535,
|
||||
10140, 11982, 8734, 8270, 2937, 10953, 8587, 8249, 2934, 9197, 4825,
|
||||
5956, 4362, 9401, 1343, 3703, 529, 10609, 12049, 6988, 6265, 895, 3639,
|
||||
4031, 4087, 4095, 585, 10617, 8539, 4731, 4187, 9376, 3095, 9220, 10095,
|
||||
10220, 1460, 10742, 12068, 1724, 5513, 11321, 6884, 2739, 5658, 6075,
|
||||
4379, 11159, 10372, 8504, 4726, 9453, 3106, 7466, 11600, 10435, 8513,
|
||||
9994, 8450, 9985, 3182, 10988, 8592, 2983, 9204, 4826, 2445, 5616, 6069,
|
||||
867, 3635, 5786, 11360, 5134, 2489, 10889, 12089, 1727, 7269, 2794,
|
||||
9177, 1311, 5454, 9557, 6632, 2703, 9164, 10087, 1441, 3717, 531, 3587,
|
||||
2268, 324, 5313, 759, 1864, 5533, 2546, 7386, 9833, 8427, 4715, 11207,
|
||||
1601, 7251, 4547, 11183, 12131, 1733, 10781, 10318, 1474, 10744, 5046,
|
||||
4232, 11138, 10369, 6748, 964, 7160, 4534, 7670, 8118, 8182, 4680,
|
||||
11202, 6867, 981, 8918, 1274, 182, 26, 7026, 8026, 11680, 12202, 10521,
|
||||
1503, 7237, 4545, 5916, 9623, 8397, 11733, 10454, 3249, 9242, 6587, 941,
|
||||
1890, 270, 10572, 6777, 9746, 6659, 6218, 6155, 6146, 878, 1881, 7291,
|
||||
11575, 12187, 1741, 7271, 8061, 11685, 6936, 4502, 9421, 4857, 4205,
|
||||
7623, 1089, 10689, 1527, 8996, 10063, 11971, 10488, 6765, 2722, 3900,
|
||||
9335, 11867, 6962, 11528, 5158, 4248, 4118, 5855, 2592, 5637, 6072,
|
||||
2623, 7397, 8079, 9932, 4930, 5971, 853, 3633, 519, 8852, 11798, 3441,
|
||||
11025, 1575, 225, 8810, 11792, 12218, 3501, 9278, 3081, 9218, 4828,
|
||||
7712, 8124, 11694, 12204, 3499, 4011, 573, 3593, 5780, 7848, 9899,
|
||||
10192, 1456, 208, 7052, 2763, 7417, 11593, 10434, 12024, 8740, 11782,
|
||||
10461, 3250, 5731, 7841, 9898, 1414, 202, 3540, 7528, 2831, 2160, 10842,
|
||||
5060, 4234, 4116, 588, 84, 12, 7024, 2759, 9172, 6577, 11473, 1639,
|
||||
9012, 3043, 7457, 6332, 11438, 1634, 1989, 9062, 11828, 8712, 11778,
|
||||
12216, 10523, 6770, 9745, 10170, 4964, 9487, 6622, 946, 8913, 6540,
|
||||
6201, 4397, 9406, 8366, 9973, 8447, 8229, 11709, 8695, 10020, 3187,
|
||||
5722, 2573, 10901, 6824, 4486, 4152, 9371, 8361, 2950, 2177, 311, 1800,
|
||||
9035, 8313, 11721, 3430, 490, 70, 10, 1757, 251, 3547, 7529, 11609,
|
||||
3414, 7510, 4584, 4166, 9373, 1339, 5458, 7802, 11648, 1664, 7260, 9815,
|
||||
10180, 6721, 9738, 10169, 8475, 8233, 9954, 1422, 8981, 1283, 5450,
|
||||
11312, 1616, 3742, 11068, 10359, 4991, 713, 3613, 9294, 8350, 4704, 672,
|
||||
96, 7036, 9783, 11931, 3460, 5761, 823, 10651, 12055, 10500, 1500, 5481,
|
||||
783, 3623, 11051, 8601, 8251, 8201, 11705, 10450, 5004, 4226, 7626,
|
||||
2845, 2162, 3820, 7568, 9859, 3164, 452, 10598, 1514, 5483, 6050, 6131,
|
||||
4387, 7649, 8115, 6426, 918, 8909, 8295, 1185, 5436, 11310, 8638, 1234,
|
||||
5443, 11311, 5127, 2488, 2111, 10835, 5059, 7745, 2862, 3920, 560, 80,
|
||||
1767, 2008, 3798, 11076, 6849, 2734, 10924, 12094, 8750, 1250, 10712,
|
||||
6797, 971, 7161, 1023, 8924, 4786, 7706, 4612, 4170, 7618, 6355, 4419,
|
||||
5898, 11376, 10403, 10264, 6733, 4473, 639, 5358, 2521, 9138, 3061,
|
||||
5704, 4326, 618, 5355, 765, 5376, 768, 7132, 4530, 9425, 3102, 9221,
|
||||
6584, 11474, 10417, 10266, 12000, 6981, 6264, 4406, 2385, 7363, 4563,
|
||||
4163, 7617, 9866, 3165, 9230, 11852, 10471, 5007, 5982, 11388, 5138,
|
||||
734, 3616, 11050, 12112, 6997, 11533, 12181, 10518, 12036, 3475, 2252,
|
||||
7344, 9827, 4915, 9480, 6621, 4457, 7659, 9872, 6677, 4465, 4149, 7615,
|
||||
4599, 657, 3605, 515, 10607, 6782, 4480, 640, 1847, 3775, 5806, 2585,
|
||||
5636, 9583, 1369, 10729, 8555, 10000, 11962, 5220, 7768, 8132, 8184,
|
||||
9947, 1421, 203, 29, 8782, 11788, 1684, 10774, 10317, 4985, 9490, 8378,
|
||||
4708, 11206, 5112, 5997, 7879, 11659, 12199, 8765, 10030, 4944, 5973,
|
||||
6120, 6141, 6144, 7900, 11662, 1666, 238, 34, 3516, 5769, 9602, 8394,
|
||||
9977, 6692, 956, 10670, 6791, 9748, 11926, 8726, 11780, 5194, 742, 106,
|
||||
8793, 10034, 3189, 10989, 5081, 4237, 5872, 4350, 2377, 10873, 6820,
|
||||
6241, 11425, 10410, 10265, 3222, 5727, 9596, 4882, 2453, 2106, 3812,
|
||||
11078, 12116, 5242, 4260, 11142, 8614, 11764, 12214, 5256, 4262, 4120,
|
||||
11122, 5100, 11262, 5120, 2487, 5622, 9581, 8391, 8221, 2930, 10952,
|
||||
12098, 6995, 6266, 9673, 4893, 699, 3611, 4027, 5842, 11368, 1624, 232,
|
||||
8811, 8281, 1183, 169, 8802, 3013, 2186, 5579, 797, 3625, 4029, 11109,
|
||||
1587, 7249, 11569, 8675, 6506, 2685, 10917, 12093, 12261, 12285, 1755,
|
||||
7273, 1039, 1904, 272, 3550, 9285, 3082, 5707, 6082, 4380, 7648, 11626,
|
||||
5172, 4250, 9385, 8363, 8217, 4685, 5936, 848, 8899, 6538, 934, 1889,
|
||||
3781, 9318, 10109, 10222, 6727, 961, 5404, 772, 5377, 9546, 8386, 1198,
|
||||
8949, 3034, 2189, 7335, 4559, 5918, 2601, 10905, 5069, 9502, 3113, 7467,
|
||||
8089, 11689, 5181, 9518, 8382, 2953, 3933, 4073, 4093, 7607, 8109, 2914,
|
||||
5683, 4323, 11151, 1593, 10761, 6804, 972, 3650, 2277, 5592, 4310, 7638,
|
||||
9869, 4921, 703, 1856, 9043, 4803, 9464, 1352, 8971, 11815, 5199, 7765,
|
||||
6376, 4422, 7654, 2849, 407, 8836, 6529, 7955, 2892, 9191, 1313, 10721,
|
||||
12065, 12257, 1751, 9028, 8312, 2943, 2176, 3822, 546, 78, 8789, 11789,
|
||||
10462, 12028, 6985, 4509, 9422, 1346, 5459, 4291, 613, 10621, 6784,
|
||||
9747, 3148, 7472, 2823, 5670, 810, 7138, 8042, 4660, 7688, 6365, 6176,
|
||||
6149, 2634, 5643, 9584, 10147, 11983, 5223, 9524, 11894, 10477, 8519,
|
||||
1217, 3685, 2282, 326, 10580, 3267, 7489, 4581, 2410, 5611, 11335, 6886,
|
||||
8006, 8166, 11700, 3427, 11023, 8597, 10006, 3185, 455, 65, 5276, 7776,
|
||||
4622, 5927, 7869, 9902, 11948, 5218, 2501, 5624, 2559, 10899, 1557,
|
||||
1978, 10816, 10323, 8497, 4725, 675, 1852, 10798, 12076, 10503, 3256,
|
||||
9243, 3076, 2195, 10847, 12083, 10504, 12034, 10497,
|
||||
}
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
// poly.go - NewHope reductions.
|
||||
//
|
||||
// To the extent possible under law, Yawning Angel has waived all copyright
|
||||
// and related or neighboring rights to newhope, using the Creative
|
||||
// Commons "CC0" public domain dedication. See LICENSE or
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
|
||||
|
||||
package newhope
|
||||
|
||||
// Incomplete-reduction routines; for details on allowed input ranges
|
||||
// and produced output ranges, see the description in the paper:
|
||||
// https://cryptojedi.org/papers/#newhope
|
||||
|
||||
const (
|
||||
qinv = 12287 // -inverse_mod(p,2^18)
|
||||
rlog = 18
|
||||
)
|
||||
|
||||
func montgomeryReduce(a uint32) uint16 {
|
||||
u := a * qinv
|
||||
u &= ((1 << rlog) - 1)
|
||||
u *= paramQ
|
||||
a = (a + u) >> 18
|
||||
return uint16(a)
|
||||
}
|
||||
|
||||
func barrettReduce(a uint16) uint16 {
|
||||
u := (uint32(a) * 5) >> 16
|
||||
u *= paramQ
|
||||
a -= uint16(u)
|
||||
return a
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2016 Andreas Auernhammer
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
|
@ -0,0 +1,197 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// Package chacha implements some low-level functions of the
|
||||
// ChaCha cipher family.
|
||||
package chacha // import "github.com/aead/chacha20/chacha"
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"math"
|
||||
)
|
||||
|
||||
const (
|
||||
// NonceSize is the size of the ChaCha20 nonce in bytes.
|
||||
NonceSize = 8
|
||||
|
||||
// INonceSize is the size of the IETF-ChaCha20 nonce in bytes.
|
||||
INonceSize = 12
|
||||
|
||||
// XNonceSize is the size of the XChaCha20 nonce in bytes.
|
||||
XNonceSize = 24
|
||||
|
||||
// KeySize is the size of the key in bytes.
|
||||
KeySize = 32
|
||||
)
|
||||
|
||||
var (
|
||||
useSSE2 bool
|
||||
useSSSE3 bool
|
||||
useAVX bool
|
||||
useAVX2 bool
|
||||
)
|
||||
|
||||
var (
|
||||
errKeySize = errors.New("chacha20/chacha: bad key length")
|
||||
errInvalidNonce = errors.New("chacha20/chacha: bad nonce length")
|
||||
)
|
||||
|
||||
func setup(state *[64]byte, nonce, key []byte) (err error) {
|
||||
if len(key) != KeySize {
|
||||
err = errKeySize
|
||||
return
|
||||
}
|
||||
var Nonce [16]byte
|
||||
switch len(nonce) {
|
||||
case NonceSize:
|
||||
copy(Nonce[8:], nonce)
|
||||
initialize(state, key, &Nonce)
|
||||
case INonceSize:
|
||||
copy(Nonce[4:], nonce)
|
||||
initialize(state, key, &Nonce)
|
||||
case XNonceSize:
|
||||
var tmpKey [32]byte
|
||||
var hNonce [16]byte
|
||||
|
||||
copy(hNonce[:], nonce[:16])
|
||||
copy(tmpKey[:], key)
|
||||
HChaCha20(&tmpKey, &hNonce, &tmpKey)
|
||||
copy(Nonce[8:], nonce[16:])
|
||||
initialize(state, tmpKey[:], &Nonce)
|
||||
|
||||
// BUG(aead): A "good" compiler will remove this (optimizations)
|
||||
// But using the provided key instead of tmpKey,
|
||||
// will change the key (-> probably confuses users)
|
||||
for i := range tmpKey {
|
||||
tmpKey[i] = 0
|
||||
}
|
||||
default:
|
||||
err = errInvalidNonce
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// XORKeyStream crypts bytes from src to dst using the given nonce and key.
|
||||
// The length of the nonce determinds the version of ChaCha20:
|
||||
// - NonceSize: ChaCha20/r with a 64 bit nonce and a 2^64 * 64 byte period.
|
||||
// - INonceSize: ChaCha20/r as defined in RFC 7539 and a 2^32 * 64 byte period.
|
||||
// - XNonceSize: XChaCha20/r with a 192 bit nonce and a 2^64 * 64 byte period.
|
||||
// The rounds argument specifies the number of rounds performed for keystream
|
||||
// generation - valid values are 8, 12 or 20. The src and dst may be the same slice
|
||||
// but otherwise should not overlap. If len(dst) < len(src) this function panics.
|
||||
// If the nonce is neither 64, 96 nor 192 bits long, this function panics.
|
||||
func XORKeyStream(dst, src, nonce, key []byte, rounds int) {
|
||||
if rounds != 20 && rounds != 12 && rounds != 8 {
|
||||
panic("chacha20/chacha: bad number of rounds")
|
||||
}
|
||||
if len(dst) < len(src) {
|
||||
panic("chacha20/chacha: dst buffer is to small")
|
||||
}
|
||||
if len(nonce) == INonceSize && uint64(len(src)) > (1<<38) {
|
||||
panic("chacha20/chacha: src is too large")
|
||||
}
|
||||
|
||||
var block, state [64]byte
|
||||
if err := setup(&state, nonce, key); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
xorKeyStream(dst, src, &block, &state, rounds)
|
||||
}
|
||||
|
||||
// Cipher implements ChaCha20/r (XChaCha20/r) for a given number of rounds r.
|
||||
type Cipher struct {
|
||||
state, block [64]byte
|
||||
off int
|
||||
rounds int // 20 for ChaCha20
|
||||
noncesize int
|
||||
}
|
||||
|
||||
// NewCipher returns a new *chacha.Cipher implementing the ChaCha20/r or XChaCha20/r
|
||||
// (r = 8, 12 or 20) stream cipher. The nonce must be unique for one key for all time.
|
||||
// The length of the nonce determinds the version of ChaCha20:
|
||||
// - NonceSize: ChaCha20/r with a 64 bit nonce and a 2^64 * 64 byte period.
|
||||
// - INonceSize: ChaCha20/r as defined in RFC 7539 and a 2^32 * 64 byte period.
|
||||
// - XNonceSize: XChaCha20/r with a 192 bit nonce and a 2^64 * 64 byte period.
|
||||
// If the nonce is neither 64, 96 nor 192 bits long, a non-nil error is returned.
|
||||
func NewCipher(nonce, key []byte, rounds int) (*Cipher, error) {
|
||||
if rounds != 20 && rounds != 12 && rounds != 8 {
|
||||
panic("chacha20/chacha: bad number of rounds")
|
||||
}
|
||||
|
||||
c := new(Cipher)
|
||||
if err := setup(&(c.state), nonce, key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
c.rounds = rounds
|
||||
|
||||
if len(nonce) == INonceSize {
|
||||
c.noncesize = INonceSize
|
||||
} else {
|
||||
c.noncesize = NonceSize
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
|
||||
// XORKeyStream crypts bytes from src to dst. Src and dst may be the same slice
|
||||
// but otherwise should not overlap. If len(dst) < len(src) the function panics.
|
||||
func (c *Cipher) XORKeyStream(dst, src []byte) {
|
||||
if len(dst) < len(src) {
|
||||
panic("chacha20/chacha: dst buffer is to small")
|
||||
}
|
||||
|
||||
if c.off > 0 {
|
||||
n := len(c.block[c.off:])
|
||||
if len(src) <= n {
|
||||
for i, v := range src {
|
||||
dst[i] = v ^ c.block[c.off]
|
||||
c.off++
|
||||
}
|
||||
if c.off == 64 {
|
||||
c.off = 0
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
for i, v := range c.block[c.off:] {
|
||||
dst[i] = src[i] ^ v
|
||||
}
|
||||
src = src[n:]
|
||||
dst = dst[n:]
|
||||
c.off = 0
|
||||
}
|
||||
|
||||
// check for counter overflow
|
||||
blocksToXOR := len(src) / 64
|
||||
if len(src)%64 != 0 {
|
||||
blocksToXOR++
|
||||
}
|
||||
var overflow bool
|
||||
if c.noncesize == INonceSize {
|
||||
overflow = binary.LittleEndian.Uint32(c.state[48:]) > math.MaxUint32-uint32(blocksToXOR)
|
||||
} else {
|
||||
overflow = binary.LittleEndian.Uint64(c.state[48:]) > math.MaxUint64-uint64(blocksToXOR)
|
||||
}
|
||||
if overflow {
|
||||
panic("chacha20/chacha: counter overflow")
|
||||
}
|
||||
|
||||
c.off += xorKeyStream(dst, src, &(c.block), &(c.state), c.rounds)
|
||||
}
|
||||
|
||||
// SetCounter skips ctr * 64 byte blocks. SetCounter(0) resets the cipher.
|
||||
// This function always skips the unused keystream of the current 64 byte block.
|
||||
func (c *Cipher) SetCounter(ctr uint64) {
|
||||
if c.noncesize == INonceSize {
|
||||
binary.LittleEndian.PutUint32(c.state[48:], uint32(ctr))
|
||||
} else {
|
||||
binary.LittleEndian.PutUint64(c.state[48:], ctr)
|
||||
}
|
||||
c.off = 0
|
||||
}
|
||||
|
||||
// HChaCha20 generates 32 pseudo-random bytes from a 128 bit nonce and a 256 bit secret key.
|
||||
// It can be used as a key-derivation-function (KDF).
|
||||
func HChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) { hChaCha20(out, nonce, key) }
|
||||
|
|
@ -0,0 +1,406 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build amd64,!gccgo,!appengine,!nacl
|
||||
|
||||
#include "const.s"
|
||||
#include "macro.s"
|
||||
|
||||
#define TWO 0(SP)
|
||||
#define C16 32(SP)
|
||||
#define C8 64(SP)
|
||||
#define STATE_0 96(SP)
|
||||
#define STATE_1 128(SP)
|
||||
#define STATE_2 160(SP)
|
||||
#define STATE_3 192(SP)
|
||||
#define TMP_0 224(SP)
|
||||
#define TMP_1 256(SP)
|
||||
|
||||
// func xorKeyStreamAVX(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
TEXT ·xorKeyStreamAVX2(SB), 4, $320-80
|
||||
MOVQ dst_base+0(FP), DI
|
||||
MOVQ src_base+24(FP), SI
|
||||
MOVQ block+48(FP), BX
|
||||
MOVQ state+56(FP), AX
|
||||
MOVQ rounds+64(FP), DX
|
||||
MOVQ src_len+32(FP), CX
|
||||
|
||||
MOVQ SP, R8
|
||||
ADDQ $32, SP
|
||||
ANDQ $-32, SP
|
||||
|
||||
VMOVDQU 0(AX), Y2
|
||||
VMOVDQU 32(AX), Y3
|
||||
VPERM2I128 $0x22, Y2, Y0, Y0
|
||||
VPERM2I128 $0x33, Y2, Y1, Y1
|
||||
VPERM2I128 $0x22, Y3, Y2, Y2
|
||||
VPERM2I128 $0x33, Y3, Y3, Y3
|
||||
|
||||
TESTQ CX, CX
|
||||
JZ done
|
||||
|
||||
VMOVDQU ·one_AVX2<>(SB), Y4
|
||||
VPADDD Y4, Y3, Y3
|
||||
|
||||
VMOVDQA Y0, STATE_0
|
||||
VMOVDQA Y1, STATE_1
|
||||
VMOVDQA Y2, STATE_2
|
||||
VMOVDQA Y3, STATE_3
|
||||
|
||||
VMOVDQU ·rol16_AVX2<>(SB), Y4
|
||||
VMOVDQU ·rol8_AVX2<>(SB), Y5
|
||||
VMOVDQU ·two_AVX2<>(SB), Y6
|
||||
VMOVDQA Y4, Y14
|
||||
VMOVDQA Y5, Y15
|
||||
VMOVDQA Y4, C16
|
||||
VMOVDQA Y5, C8
|
||||
VMOVDQA Y6, TWO
|
||||
|
||||
CMPQ CX, $64
|
||||
JBE between_0_and_64
|
||||
CMPQ CX, $192
|
||||
JBE between_64_and_192
|
||||
CMPQ CX, $320
|
||||
JBE between_192_and_320
|
||||
CMPQ CX, $448
|
||||
JBE between_320_and_448
|
||||
|
||||
at_least_512:
|
||||
VMOVDQA Y0, Y4
|
||||
VMOVDQA Y1, Y5
|
||||
VMOVDQA Y2, Y6
|
||||
VPADDQ TWO, Y3, Y7
|
||||
VMOVDQA Y0, Y8
|
||||
VMOVDQA Y1, Y9
|
||||
VMOVDQA Y2, Y10
|
||||
VPADDQ TWO, Y7, Y11
|
||||
VMOVDQA Y0, Y12
|
||||
VMOVDQA Y1, Y13
|
||||
VMOVDQA Y2, Y14
|
||||
VPADDQ TWO, Y11, Y15
|
||||
|
||||
MOVQ DX, R9
|
||||
|
||||
chacha_loop_512:
|
||||
VMOVDQA Y8, TMP_0
|
||||
CHACHA_QROUND_AVX(Y0, Y1, Y2, Y3, Y8, C16, C8)
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y8, C16, C8)
|
||||
VMOVDQA TMP_0, Y8
|
||||
VMOVDQA Y0, TMP_0
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y0, C16, C8)
|
||||
CHACHA_QROUND_AVX(Y12, Y13, Y14, Y15, Y0, C16, C8)
|
||||
CHACHA_SHUFFLE_AVX(Y1, Y2, Y3)
|
||||
CHACHA_SHUFFLE_AVX(Y5, Y6, Y7)
|
||||
CHACHA_SHUFFLE_AVX(Y9, Y10, Y11)
|
||||
CHACHA_SHUFFLE_AVX(Y13, Y14, Y15)
|
||||
|
||||
CHACHA_QROUND_AVX(Y12, Y13, Y14, Y15, Y0, C16, C8)
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y0, C16, C8)
|
||||
VMOVDQA TMP_0, Y0
|
||||
VMOVDQA Y8, TMP_0
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y8, C16, C8)
|
||||
CHACHA_QROUND_AVX(Y0, Y1, Y2, Y3, Y8, C16, C8)
|
||||
VMOVDQA TMP_0, Y8
|
||||
CHACHA_SHUFFLE_AVX(Y3, Y2, Y1)
|
||||
CHACHA_SHUFFLE_AVX(Y7, Y6, Y5)
|
||||
CHACHA_SHUFFLE_AVX(Y11, Y10, Y9)
|
||||
CHACHA_SHUFFLE_AVX(Y15, Y14, Y13)
|
||||
SUBQ $2, R9
|
||||
JA chacha_loop_512
|
||||
|
||||
VMOVDQA Y12, TMP_0
|
||||
VMOVDQA Y13, TMP_1
|
||||
VPADDD STATE_0, Y0, Y0
|
||||
VPADDD STATE_1, Y1, Y1
|
||||
VPADDD STATE_2, Y2, Y2
|
||||
VPADDD STATE_3, Y3, Y3
|
||||
XOR_AVX2(DI, SI, 0, Y0, Y1, Y2, Y3, Y12, Y13)
|
||||
VMOVDQA STATE_0, Y0
|
||||
VMOVDQA STATE_1, Y1
|
||||
VMOVDQA STATE_2, Y2
|
||||
VMOVDQA STATE_3, Y3
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
VPADDD Y0, Y4, Y4
|
||||
VPADDD Y1, Y5, Y5
|
||||
VPADDD Y2, Y6, Y6
|
||||
VPADDD Y3, Y7, Y7
|
||||
XOR_AVX2(DI, SI, 128, Y4, Y5, Y6, Y7, Y12, Y13)
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
VPADDD Y0, Y8, Y8
|
||||
VPADDD Y1, Y9, Y9
|
||||
VPADDD Y2, Y10, Y10
|
||||
VPADDD Y3, Y11, Y11
|
||||
XOR_AVX2(DI, SI, 256, Y8, Y9, Y10, Y11, Y12, Y13)
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
VPADDD TMP_0, Y0, Y12
|
||||
VPADDD TMP_1, Y1, Y13
|
||||
VPADDD Y2, Y14, Y14
|
||||
VPADDD Y3, Y15, Y15
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
CMPQ CX, $512
|
||||
JB less_than_512
|
||||
|
||||
XOR_AVX2(DI, SI, 384, Y12, Y13, Y14, Y15, Y4, Y5)
|
||||
VMOVDQA Y3, STATE_3
|
||||
ADDQ $512, SI
|
||||
ADDQ $512, DI
|
||||
SUBQ $512, CX
|
||||
CMPQ CX, $448
|
||||
JA at_least_512
|
||||
|
||||
TESTQ CX, CX
|
||||
JZ done
|
||||
|
||||
VMOVDQA C16, Y14
|
||||
VMOVDQA C8, Y15
|
||||
|
||||
CMPQ CX, $64
|
||||
JBE between_0_and_64
|
||||
CMPQ CX, $192
|
||||
JBE between_64_and_192
|
||||
CMPQ CX, $320
|
||||
JBE between_192_and_320
|
||||
JMP between_320_and_448
|
||||
|
||||
less_than_512:
|
||||
XOR_UPPER_AVX2(DI, SI, 384, Y12, Y13, Y14, Y15, Y4, Y5)
|
||||
EXTRACT_LOWER(BX, Y12, Y13, Y14, Y15, Y4)
|
||||
ADDQ $448, SI
|
||||
ADDQ $448, DI
|
||||
SUBQ $448, CX
|
||||
JMP finalize
|
||||
|
||||
between_320_and_448:
|
||||
VMOVDQA Y0, Y4
|
||||
VMOVDQA Y1, Y5
|
||||
VMOVDQA Y2, Y6
|
||||
VPADDQ TWO, Y3, Y7
|
||||
VMOVDQA Y0, Y8
|
||||
VMOVDQA Y1, Y9
|
||||
VMOVDQA Y2, Y10
|
||||
VPADDQ TWO, Y7, Y11
|
||||
|
||||
MOVQ DX, R9
|
||||
|
||||
chacha_loop_384:
|
||||
CHACHA_QROUND_AVX(Y0, Y1, Y2, Y3, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y1, Y2, Y3)
|
||||
CHACHA_SHUFFLE_AVX(Y5, Y6, Y7)
|
||||
CHACHA_SHUFFLE_AVX(Y9, Y10, Y11)
|
||||
CHACHA_QROUND_AVX(Y0, Y1, Y2, Y3, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y3, Y2, Y1)
|
||||
CHACHA_SHUFFLE_AVX(Y7, Y6, Y5)
|
||||
CHACHA_SHUFFLE_AVX(Y11, Y10, Y9)
|
||||
SUBQ $2, R9
|
||||
JA chacha_loop_384
|
||||
|
||||
VPADDD STATE_0, Y0, Y0
|
||||
VPADDD STATE_1, Y1, Y1
|
||||
VPADDD STATE_2, Y2, Y2
|
||||
VPADDD STATE_3, Y3, Y3
|
||||
XOR_AVX2(DI, SI, 0, Y0, Y1, Y2, Y3, Y12, Y13)
|
||||
VMOVDQA STATE_0, Y0
|
||||
VMOVDQA STATE_1, Y1
|
||||
VMOVDQA STATE_2, Y2
|
||||
VMOVDQA STATE_3, Y3
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
VPADDD Y0, Y4, Y4
|
||||
VPADDD Y1, Y5, Y5
|
||||
VPADDD Y2, Y6, Y6
|
||||
VPADDD Y3, Y7, Y7
|
||||
XOR_AVX2(DI, SI, 128, Y4, Y5, Y6, Y7, Y12, Y13)
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
VPADDD Y0, Y8, Y8
|
||||
VPADDD Y1, Y9, Y9
|
||||
VPADDD Y2, Y10, Y10
|
||||
VPADDD Y3, Y11, Y11
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
CMPQ CX, $384
|
||||
JB less_than_384
|
||||
|
||||
XOR_AVX2(DI, SI, 256, Y8, Y9, Y10, Y11, Y12, Y13)
|
||||
SUBQ $384, CX
|
||||
TESTQ CX, CX
|
||||
JE done
|
||||
|
||||
ADDQ $384, SI
|
||||
ADDQ $384, DI
|
||||
JMP between_0_and_64
|
||||
|
||||
less_than_384:
|
||||
XOR_UPPER_AVX2(DI, SI, 256, Y8, Y9, Y10, Y11, Y12, Y13)
|
||||
EXTRACT_LOWER(BX, Y8, Y9, Y10, Y11, Y12)
|
||||
ADDQ $320, SI
|
||||
ADDQ $320, DI
|
||||
SUBQ $320, CX
|
||||
JMP finalize
|
||||
|
||||
between_192_and_320:
|
||||
VMOVDQA Y0, Y4
|
||||
VMOVDQA Y1, Y5
|
||||
VMOVDQA Y2, Y6
|
||||
VMOVDQA Y3, Y7
|
||||
VMOVDQA Y0, Y8
|
||||
VMOVDQA Y1, Y9
|
||||
VMOVDQA Y2, Y10
|
||||
VPADDQ TWO, Y3, Y11
|
||||
|
||||
MOVQ DX, R9
|
||||
|
||||
chacha_loop_256:
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y5, Y6, Y7)
|
||||
CHACHA_SHUFFLE_AVX(Y9, Y10, Y11)
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_QROUND_AVX(Y8, Y9, Y10, Y11, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y7, Y6, Y5)
|
||||
CHACHA_SHUFFLE_AVX(Y11, Y10, Y9)
|
||||
SUBQ $2, R9
|
||||
JA chacha_loop_256
|
||||
|
||||
VPADDD Y0, Y4, Y4
|
||||
VPADDD Y1, Y5, Y5
|
||||
VPADDD Y2, Y6, Y6
|
||||
VPADDD Y3, Y7, Y7
|
||||
VPADDQ TWO, Y3, Y3
|
||||
XOR_AVX2(DI, SI, 0, Y4, Y5, Y6, Y7, Y12, Y13)
|
||||
VPADDD Y0, Y8, Y8
|
||||
VPADDD Y1, Y9, Y9
|
||||
VPADDD Y2, Y10, Y10
|
||||
VPADDD Y3, Y11, Y11
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
CMPQ CX, $256
|
||||
JB less_than_256
|
||||
|
||||
XOR_AVX2(DI, SI, 128, Y8, Y9, Y10, Y11, Y12, Y13)
|
||||
SUBQ $256, CX
|
||||
TESTQ CX, CX
|
||||
JE done
|
||||
|
||||
ADDQ $256, SI
|
||||
ADDQ $256, DI
|
||||
JMP between_0_and_64
|
||||
|
||||
less_than_256:
|
||||
XOR_UPPER_AVX2(DI, SI, 128, Y8, Y9, Y10, Y11, Y12, Y13)
|
||||
EXTRACT_LOWER(BX, Y8, Y9, Y10, Y11, Y12)
|
||||
ADDQ $192, SI
|
||||
ADDQ $192, DI
|
||||
SUBQ $192, CX
|
||||
JMP finalize
|
||||
|
||||
between_64_and_192:
|
||||
VMOVDQA Y0, Y4
|
||||
VMOVDQA Y1, Y5
|
||||
VMOVDQA Y2, Y6
|
||||
VMOVDQA Y3, Y7
|
||||
|
||||
MOVQ DX, R9
|
||||
|
||||
chacha_loop_128:
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y5, Y6, Y7)
|
||||
CHACHA_QROUND_AVX(Y4, Y5, Y6, Y7, Y13, Y14, Y15)
|
||||
CHACHA_SHUFFLE_AVX(Y7, Y6, Y5)
|
||||
SUBQ $2, R9
|
||||
JA chacha_loop_128
|
||||
|
||||
VPADDD Y0, Y4, Y4
|
||||
VPADDD Y1, Y5, Y5
|
||||
VPADDD Y2, Y6, Y6
|
||||
VPADDD Y3, Y7, Y7
|
||||
VPADDQ TWO, Y3, Y3
|
||||
|
||||
CMPQ CX, $128
|
||||
JB less_than_128
|
||||
|
||||
XOR_AVX2(DI, SI, 0, Y4, Y5, Y6, Y7, Y12, Y13)
|
||||
SUBQ $128, CX
|
||||
TESTQ CX, CX
|
||||
JE done
|
||||
|
||||
ADDQ $128, SI
|
||||
ADDQ $128, DI
|
||||
JMP between_0_and_64
|
||||
|
||||
less_than_128:
|
||||
XOR_UPPER_AVX2(DI, SI, 0, Y4, Y5, Y6, Y7, Y12, Y13)
|
||||
EXTRACT_LOWER(BX, Y4, Y5, Y6, Y7, Y13)
|
||||
ADDQ $64, SI
|
||||
ADDQ $64, DI
|
||||
SUBQ $64, CX
|
||||
JMP finalize
|
||||
|
||||
between_0_and_64:
|
||||
VMOVDQA X0, X4
|
||||
VMOVDQA X1, X5
|
||||
VMOVDQA X2, X6
|
||||
VMOVDQA X3, X7
|
||||
|
||||
MOVQ DX, R9
|
||||
|
||||
chacha_loop_64:
|
||||
CHACHA_QROUND_AVX(X4, X5, X6, X7, X13, X14, X15)
|
||||
CHACHA_SHUFFLE_AVX(X5, X6, X7)
|
||||
CHACHA_QROUND_AVX(X4, X5, X6, X7, X13, X14, X15)
|
||||
CHACHA_SHUFFLE_AVX(X7, X6, X5)
|
||||
SUBQ $2, R9
|
||||
JA chacha_loop_64
|
||||
|
||||
VPADDD X0, X4, X4
|
||||
VPADDD X1, X5, X5
|
||||
VPADDD X2, X6, X6
|
||||
VPADDD X3, X7, X7
|
||||
VMOVDQU ·one<>(SB), X0
|
||||
VPADDQ X0, X3, X3
|
||||
|
||||
CMPQ CX, $64
|
||||
JB less_than_64
|
||||
|
||||
XOR_AVX(DI, SI, 0, X4, X5, X6, X7, X13)
|
||||
SUBQ $64, CX
|
||||
JMP done
|
||||
|
||||
less_than_64:
|
||||
VMOVDQU X4, 0(BX)
|
||||
VMOVDQU X5, 16(BX)
|
||||
VMOVDQU X6, 32(BX)
|
||||
VMOVDQU X7, 48(BX)
|
||||
|
||||
finalize:
|
||||
XORQ R11, R11
|
||||
XORQ R12, R12
|
||||
MOVQ CX, BP
|
||||
|
||||
xor_loop:
|
||||
MOVB 0(SI), R11
|
||||
MOVB 0(BX), R12
|
||||
XORQ R11, R12
|
||||
MOVB R12, 0(DI)
|
||||
INCQ SI
|
||||
INCQ BX
|
||||
INCQ DI
|
||||
DECQ BP
|
||||
JA xor_loop
|
||||
|
||||
done:
|
||||
VMOVDQU X3, 48(AX)
|
||||
VZEROUPPER
|
||||
MOVQ R8, SP
|
||||
MOVQ CX, ret+72(FP)
|
||||
RET
|
||||
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build 386,!gccgo,!appengine,!nacl
|
||||
|
||||
package chacha
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
|
||||
"golang.org/x/sys/cpu"
|
||||
)
|
||||
|
||||
func init() {
|
||||
useSSE2 = cpu.X86.HasSSE2
|
||||
useSSSE3 = cpu.X86.HasSSSE3
|
||||
useAVX = false
|
||||
useAVX2 = false
|
||||
}
|
||||
|
||||
func initialize(state *[64]byte, key []byte, nonce *[16]byte) {
|
||||
binary.LittleEndian.PutUint32(state[0:], sigma[0])
|
||||
binary.LittleEndian.PutUint32(state[4:], sigma[1])
|
||||
binary.LittleEndian.PutUint32(state[8:], sigma[2])
|
||||
binary.LittleEndian.PutUint32(state[12:], sigma[3])
|
||||
copy(state[16:], key[:])
|
||||
copy(state[48:], nonce[:])
|
||||
}
|
||||
|
||||
// This function is implemented in chacha_386.s
|
||||
//go:noescape
|
||||
func hChaCha20SSE2(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
|
||||
// This function is implemented in chacha_386.s
|
||||
//go:noescape
|
||||
func hChaCha20SSSE3(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
|
||||
// This function is implemented in chacha_386.s
|
||||
//go:noescape
|
||||
func xorKeyStreamSSE2(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
|
||||
func hChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
||||
switch {
|
||||
case useSSSE3:
|
||||
hChaCha20SSSE3(out, nonce, key)
|
||||
case useSSE2:
|
||||
hChaCha20SSE2(out, nonce, key)
|
||||
default:
|
||||
hChaCha20Generic(out, nonce, key)
|
||||
}
|
||||
}
|
||||
|
||||
func xorKeyStream(dst, src []byte, block, state *[64]byte, rounds int) int {
|
||||
if useSSE2 {
|
||||
return xorKeyStreamSSE2(dst, src, block, state, rounds)
|
||||
} else {
|
||||
return xorKeyStreamGeneric(dst, src, block, state, rounds)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,163 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build 386,!gccgo,!appengine,!nacl
|
||||
|
||||
#include "const.s"
|
||||
#include "macro.s"
|
||||
|
||||
// FINALIZE xors len bytes from src and block using
|
||||
// the temp. registers t0 and t1 and writes the result
|
||||
// to dst.
|
||||
#define FINALIZE(dst, src, block, len, t0, t1) \
|
||||
XORL t0, t0; \
|
||||
XORL t1, t1; \
|
||||
FINALIZE_LOOP:; \
|
||||
MOVB 0(src), t0; \
|
||||
MOVB 0(block), t1; \
|
||||
XORL t0, t1; \
|
||||
MOVB t1, 0(dst); \
|
||||
INCL src; \
|
||||
INCL block; \
|
||||
INCL dst; \
|
||||
DECL len; \
|
||||
JG FINALIZE_LOOP \
|
||||
|
||||
#define Dst DI
|
||||
#define Nonce AX
|
||||
#define Key BX
|
||||
#define Rounds DX
|
||||
|
||||
// func hChaCha20SSE2(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
TEXT ·hChaCha20SSE2(SB), 4, $0-12
|
||||
MOVL out+0(FP), Dst
|
||||
MOVL nonce+4(FP), Nonce
|
||||
MOVL key+8(FP), Key
|
||||
|
||||
MOVOU ·sigma<>(SB), X0
|
||||
MOVOU 0*16(Key), X1
|
||||
MOVOU 1*16(Key), X2
|
||||
MOVOU 0*16(Nonce), X3
|
||||
MOVL $20, Rounds
|
||||
|
||||
chacha_loop:
|
||||
CHACHA_QROUND_SSE2(X0, X1, X2, X3, X4)
|
||||
CHACHA_SHUFFLE_SSE(X1, X2, X3)
|
||||
CHACHA_QROUND_SSE2(X0, X1, X2, X3, X4)
|
||||
CHACHA_SHUFFLE_SSE(X3, X2, X1)
|
||||
SUBL $2, Rounds
|
||||
JNZ chacha_loop
|
||||
|
||||
MOVOU X0, 0*16(Dst)
|
||||
MOVOU X3, 1*16(Dst)
|
||||
RET
|
||||
|
||||
// func hChaCha20SSSE3(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
TEXT ·hChaCha20SSSE3(SB), 4, $0-12
|
||||
MOVL out+0(FP), Dst
|
||||
MOVL nonce+4(FP), Nonce
|
||||
MOVL key+8(FP), Key
|
||||
|
||||
MOVOU ·sigma<>(SB), X0
|
||||
MOVOU 0*16(Key), X1
|
||||
MOVOU 1*16(Key), X2
|
||||
MOVOU 0*16(Nonce), X3
|
||||
MOVL $20, Rounds
|
||||
|
||||
MOVOU ·rol16<>(SB), X5
|
||||
MOVOU ·rol8<>(SB), X6
|
||||
|
||||
chacha_loop:
|
||||
CHACHA_QROUND_SSSE3(X0, X1, X2, X3, X4, X5, X6)
|
||||
CHACHA_SHUFFLE_SSE(X1, X2, X3)
|
||||
CHACHA_QROUND_SSSE3(X0, X1, X2, X3, X4, X5, X6)
|
||||
CHACHA_SHUFFLE_SSE(X3, X2, X1)
|
||||
SUBL $2, Rounds
|
||||
JNZ chacha_loop
|
||||
|
||||
MOVOU X0, 0*16(Dst)
|
||||
MOVOU X3, 1*16(Dst)
|
||||
RET
|
||||
|
||||
#undef Dst
|
||||
#undef Nonce
|
||||
#undef Key
|
||||
#undef Rounds
|
||||
|
||||
#define State AX
|
||||
#define Dst DI
|
||||
#define Src SI
|
||||
#define Len DX
|
||||
#define Tmp0 BX
|
||||
#define Tmp1 BP
|
||||
|
||||
// func xorKeyStreamSSE2(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
TEXT ·xorKeyStreamSSE2(SB), 4, $0-40
|
||||
MOVL dst_base+0(FP), Dst
|
||||
MOVL src_base+12(FP), Src
|
||||
MOVL state+28(FP), State
|
||||
MOVL src_len+16(FP), Len
|
||||
MOVL $0, ret+36(FP) // Number of bytes written to the keystream buffer - 0 iff len mod 64 == 0
|
||||
|
||||
MOVOU 0*16(State), X0
|
||||
MOVOU 1*16(State), X1
|
||||
MOVOU 2*16(State), X2
|
||||
MOVOU 3*16(State), X3
|
||||
TESTL Len, Len
|
||||
JZ DONE
|
||||
|
||||
GENERATE_KEYSTREAM:
|
||||
MOVO X0, X4
|
||||
MOVO X1, X5
|
||||
MOVO X2, X6
|
||||
MOVO X3, X7
|
||||
MOVL rounds+32(FP), Tmp0
|
||||
|
||||
CHACHA_LOOP:
|
||||
CHACHA_QROUND_SSE2(X4, X5, X6, X7, X0)
|
||||
CHACHA_SHUFFLE_SSE(X5, X6, X7)
|
||||
CHACHA_QROUND_SSE2(X4, X5, X6, X7, X0)
|
||||
CHACHA_SHUFFLE_SSE(X7, X6, X5)
|
||||
SUBL $2, Tmp0
|
||||
JA CHACHA_LOOP
|
||||
|
||||
MOVOU 0*16(State), X0 // Restore X0 from state
|
||||
PADDL X0, X4
|
||||
PADDL X1, X5
|
||||
PADDL X2, X6
|
||||
PADDL X3, X7
|
||||
MOVOU ·one<>(SB), X0
|
||||
PADDQ X0, X3
|
||||
|
||||
CMPL Len, $64
|
||||
JL BUFFER_KEYSTREAM
|
||||
|
||||
XOR_SSE(Dst, Src, 0, X4, X5, X6, X7, X0)
|
||||
MOVOU 0*16(State), X0 // Restore X0 from state
|
||||
ADDL $64, Src
|
||||
ADDL $64, Dst
|
||||
SUBL $64, Len
|
||||
JZ DONE
|
||||
JMP GENERATE_KEYSTREAM // There is at least one more plaintext byte
|
||||
|
||||
BUFFER_KEYSTREAM:
|
||||
MOVL block+24(FP), State
|
||||
MOVOU X4, 0(State)
|
||||
MOVOU X5, 16(State)
|
||||
MOVOU X6, 32(State)
|
||||
MOVOU X7, 48(State)
|
||||
MOVL Len, ret+36(FP) // Number of bytes written to the keystream buffer - 0 < Len < 64
|
||||
FINALIZE(Dst, Src, State, Len, Tmp0, Tmp1)
|
||||
|
||||
DONE:
|
||||
MOVL state+28(FP), State
|
||||
MOVOU X3, 3*16(State)
|
||||
RET
|
||||
|
||||
#undef State
|
||||
#undef Dst
|
||||
#undef Src
|
||||
#undef Len
|
||||
#undef Tmp0
|
||||
#undef Tmp1
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
// Copyright (c) 2017 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build go1.7,amd64,!gccgo,!appengine,!nacl
|
||||
|
||||
package chacha
|
||||
|
||||
import "golang.org/x/sys/cpu"
|
||||
|
||||
func init() {
|
||||
useSSE2 = cpu.X86.HasSSE2
|
||||
useSSSE3 = cpu.X86.HasSSSE3
|
||||
useAVX = cpu.X86.HasAVX
|
||||
useAVX2 = cpu.X86.HasAVX2
|
||||
}
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func initialize(state *[64]byte, key []byte, nonce *[16]byte)
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func hChaCha20SSE2(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func hChaCha20SSSE3(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
|
||||
// This function is implemented in chachaAVX2_amd64.s
|
||||
//go:noescape
|
||||
func hChaCha20AVX(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func xorKeyStreamSSE2(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func xorKeyStreamSSSE3(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
|
||||
// This function is implemented in chacha_amd64.s
|
||||
//go:noescape
|
||||
func xorKeyStreamAVX(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
|
||||
// This function is implemented in chachaAVX2_amd64.s
|
||||
//go:noescape
|
||||
func xorKeyStreamAVX2(dst, src []byte, block, state *[64]byte, rounds int) int
|
||||
|
||||
func hChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
||||
switch {
|
||||
case useAVX:
|
||||
hChaCha20AVX(out, nonce, key)
|
||||
case useSSSE3:
|
||||
hChaCha20SSSE3(out, nonce, key)
|
||||
case useSSE2:
|
||||
hChaCha20SSE2(out, nonce, key)
|
||||
default:
|
||||
hChaCha20Generic(out, nonce, key)
|
||||
}
|
||||
}
|
||||
|
||||
func xorKeyStream(dst, src []byte, block, state *[64]byte, rounds int) int {
|
||||
switch {
|
||||
case useAVX2:
|
||||
return xorKeyStreamAVX2(dst, src, block, state, rounds)
|
||||
case useAVX:
|
||||
return xorKeyStreamAVX(dst, src, block, state, rounds)
|
||||
case useSSSE3:
|
||||
return xorKeyStreamSSSE3(dst, src, block, state, rounds)
|
||||
case useSSE2:
|
||||
return xorKeyStreamSSE2(dst, src, block, state, rounds)
|
||||
default:
|
||||
return xorKeyStreamGeneric(dst, src, block, state, rounds)
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,319 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
package chacha
|
||||
|
||||
import "encoding/binary"
|
||||
|
||||
var sigma = [4]uint32{0x61707865, 0x3320646e, 0x79622d32, 0x6b206574}
|
||||
|
||||
func xorKeyStreamGeneric(dst, src []byte, block, state *[64]byte, rounds int) int {
|
||||
for len(src) >= 64 {
|
||||
chachaGeneric(block, state, rounds)
|
||||
|
||||
for i, v := range block {
|
||||
dst[i] = src[i] ^ v
|
||||
}
|
||||
src = src[64:]
|
||||
dst = dst[64:]
|
||||
}
|
||||
|
||||
n := len(src)
|
||||
if n > 0 {
|
||||
chachaGeneric(block, state, rounds)
|
||||
for i, v := range src {
|
||||
dst[i] = v ^ block[i]
|
||||
}
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
func chachaGeneric(dst *[64]byte, state *[64]byte, rounds int) {
|
||||
v00 := binary.LittleEndian.Uint32(state[0:])
|
||||
v01 := binary.LittleEndian.Uint32(state[4:])
|
||||
v02 := binary.LittleEndian.Uint32(state[8:])
|
||||
v03 := binary.LittleEndian.Uint32(state[12:])
|
||||
v04 := binary.LittleEndian.Uint32(state[16:])
|
||||
v05 := binary.LittleEndian.Uint32(state[20:])
|
||||
v06 := binary.LittleEndian.Uint32(state[24:])
|
||||
v07 := binary.LittleEndian.Uint32(state[28:])
|
||||
v08 := binary.LittleEndian.Uint32(state[32:])
|
||||
v09 := binary.LittleEndian.Uint32(state[36:])
|
||||
v10 := binary.LittleEndian.Uint32(state[40:])
|
||||
v11 := binary.LittleEndian.Uint32(state[44:])
|
||||
v12 := binary.LittleEndian.Uint32(state[48:])
|
||||
v13 := binary.LittleEndian.Uint32(state[52:])
|
||||
v14 := binary.LittleEndian.Uint32(state[56:])
|
||||
v15 := binary.LittleEndian.Uint32(state[60:])
|
||||
|
||||
s00, s01, s02, s03, s04, s05, s06, s07 := v00, v01, v02, v03, v04, v05, v06, v07
|
||||
s08, s09, s10, s11, s12, s13, s14, s15 := v08, v09, v10, v11, v12, v13, v14, v15
|
||||
|
||||
for i := 0; i < rounds; i += 2 {
|
||||
v00 += v04
|
||||
v12 ^= v00
|
||||
v12 = (v12 << 16) | (v12 >> 16)
|
||||
v08 += v12
|
||||
v04 ^= v08
|
||||
v04 = (v04 << 12) | (v04 >> 20)
|
||||
v00 += v04
|
||||
v12 ^= v00
|
||||
v12 = (v12 << 8) | (v12 >> 24)
|
||||
v08 += v12
|
||||
v04 ^= v08
|
||||
v04 = (v04 << 7) | (v04 >> 25)
|
||||
v01 += v05
|
||||
v13 ^= v01
|
||||
v13 = (v13 << 16) | (v13 >> 16)
|
||||
v09 += v13
|
||||
v05 ^= v09
|
||||
v05 = (v05 << 12) | (v05 >> 20)
|
||||
v01 += v05
|
||||
v13 ^= v01
|
||||
v13 = (v13 << 8) | (v13 >> 24)
|
||||
v09 += v13
|
||||
v05 ^= v09
|
||||
v05 = (v05 << 7) | (v05 >> 25)
|
||||
v02 += v06
|
||||
v14 ^= v02
|
||||
v14 = (v14 << 16) | (v14 >> 16)
|
||||
v10 += v14
|
||||
v06 ^= v10
|
||||
v06 = (v06 << 12) | (v06 >> 20)
|
||||
v02 += v06
|
||||
v14 ^= v02
|
||||
v14 = (v14 << 8) | (v14 >> 24)
|
||||
v10 += v14
|
||||
v06 ^= v10
|
||||
v06 = (v06 << 7) | (v06 >> 25)
|
||||
v03 += v07
|
||||
v15 ^= v03
|
||||
v15 = (v15 << 16) | (v15 >> 16)
|
||||
v11 += v15
|
||||
v07 ^= v11
|
||||
v07 = (v07 << 12) | (v07 >> 20)
|
||||
v03 += v07
|
||||
v15 ^= v03
|
||||
v15 = (v15 << 8) | (v15 >> 24)
|
||||
v11 += v15
|
||||
v07 ^= v11
|
||||
v07 = (v07 << 7) | (v07 >> 25)
|
||||
v00 += v05
|
||||
v15 ^= v00
|
||||
v15 = (v15 << 16) | (v15 >> 16)
|
||||
v10 += v15
|
||||
v05 ^= v10
|
||||
v05 = (v05 << 12) | (v05 >> 20)
|
||||
v00 += v05
|
||||
v15 ^= v00
|
||||
v15 = (v15 << 8) | (v15 >> 24)
|
||||
v10 += v15
|
||||
v05 ^= v10
|
||||
v05 = (v05 << 7) | (v05 >> 25)
|
||||
v01 += v06
|
||||
v12 ^= v01
|
||||
v12 = (v12 << 16) | (v12 >> 16)
|
||||
v11 += v12
|
||||
v06 ^= v11
|
||||
v06 = (v06 << 12) | (v06 >> 20)
|
||||
v01 += v06
|
||||
v12 ^= v01
|
||||
v12 = (v12 << 8) | (v12 >> 24)
|
||||
v11 += v12
|
||||
v06 ^= v11
|
||||
v06 = (v06 << 7) | (v06 >> 25)
|
||||
v02 += v07
|
||||
v13 ^= v02
|
||||
v13 = (v13 << 16) | (v13 >> 16)
|
||||
v08 += v13
|
||||
v07 ^= v08
|
||||
v07 = (v07 << 12) | (v07 >> 20)
|
||||
v02 += v07
|
||||
v13 ^= v02
|
||||
v13 = (v13 << 8) | (v13 >> 24)
|
||||
v08 += v13
|
||||
v07 ^= v08
|
||||
v07 = (v07 << 7) | (v07 >> 25)
|
||||
v03 += v04
|
||||
v14 ^= v03
|
||||
v14 = (v14 << 16) | (v14 >> 16)
|
||||
v09 += v14
|
||||
v04 ^= v09
|
||||
v04 = (v04 << 12) | (v04 >> 20)
|
||||
v03 += v04
|
||||
v14 ^= v03
|
||||
v14 = (v14 << 8) | (v14 >> 24)
|
||||
v09 += v14
|
||||
v04 ^= v09
|
||||
v04 = (v04 << 7) | (v04 >> 25)
|
||||
}
|
||||
|
||||
v00 += s00
|
||||
v01 += s01
|
||||
v02 += s02
|
||||
v03 += s03
|
||||
v04 += s04
|
||||
v05 += s05
|
||||
v06 += s06
|
||||
v07 += s07
|
||||
v08 += s08
|
||||
v09 += s09
|
||||
v10 += s10
|
||||
v11 += s11
|
||||
v12 += s12
|
||||
v13 += s13
|
||||
v14 += s14
|
||||
v15 += s15
|
||||
|
||||
s12++
|
||||
binary.LittleEndian.PutUint32(state[48:], s12)
|
||||
if s12 == 0 { // indicates overflow
|
||||
s13++
|
||||
binary.LittleEndian.PutUint32(state[52:], s13)
|
||||
}
|
||||
|
||||
binary.LittleEndian.PutUint32(dst[0:], v00)
|
||||
binary.LittleEndian.PutUint32(dst[4:], v01)
|
||||
binary.LittleEndian.PutUint32(dst[8:], v02)
|
||||
binary.LittleEndian.PutUint32(dst[12:], v03)
|
||||
binary.LittleEndian.PutUint32(dst[16:], v04)
|
||||
binary.LittleEndian.PutUint32(dst[20:], v05)
|
||||
binary.LittleEndian.PutUint32(dst[24:], v06)
|
||||
binary.LittleEndian.PutUint32(dst[28:], v07)
|
||||
binary.LittleEndian.PutUint32(dst[32:], v08)
|
||||
binary.LittleEndian.PutUint32(dst[36:], v09)
|
||||
binary.LittleEndian.PutUint32(dst[40:], v10)
|
||||
binary.LittleEndian.PutUint32(dst[44:], v11)
|
||||
binary.LittleEndian.PutUint32(dst[48:], v12)
|
||||
binary.LittleEndian.PutUint32(dst[52:], v13)
|
||||
binary.LittleEndian.PutUint32(dst[56:], v14)
|
||||
binary.LittleEndian.PutUint32(dst[60:], v15)
|
||||
}
|
||||
|
||||
func hChaCha20Generic(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
||||
v00 := sigma[0]
|
||||
v01 := sigma[1]
|
||||
v02 := sigma[2]
|
||||
v03 := sigma[3]
|
||||
v04 := binary.LittleEndian.Uint32(key[0:])
|
||||
v05 := binary.LittleEndian.Uint32(key[4:])
|
||||
v06 := binary.LittleEndian.Uint32(key[8:])
|
||||
v07 := binary.LittleEndian.Uint32(key[12:])
|
||||
v08 := binary.LittleEndian.Uint32(key[16:])
|
||||
v09 := binary.LittleEndian.Uint32(key[20:])
|
||||
v10 := binary.LittleEndian.Uint32(key[24:])
|
||||
v11 := binary.LittleEndian.Uint32(key[28:])
|
||||
v12 := binary.LittleEndian.Uint32(nonce[0:])
|
||||
v13 := binary.LittleEndian.Uint32(nonce[4:])
|
||||
v14 := binary.LittleEndian.Uint32(nonce[8:])
|
||||
v15 := binary.LittleEndian.Uint32(nonce[12:])
|
||||
|
||||
for i := 0; i < 20; i += 2 {
|
||||
v00 += v04
|
||||
v12 ^= v00
|
||||
v12 = (v12 << 16) | (v12 >> 16)
|
||||
v08 += v12
|
||||
v04 ^= v08
|
||||
v04 = (v04 << 12) | (v04 >> 20)
|
||||
v00 += v04
|
||||
v12 ^= v00
|
||||
v12 = (v12 << 8) | (v12 >> 24)
|
||||
v08 += v12
|
||||
v04 ^= v08
|
||||
v04 = (v04 << 7) | (v04 >> 25)
|
||||
v01 += v05
|
||||
v13 ^= v01
|
||||
v13 = (v13 << 16) | (v13 >> 16)
|
||||
v09 += v13
|
||||
v05 ^= v09
|
||||
v05 = (v05 << 12) | (v05 >> 20)
|
||||
v01 += v05
|
||||
v13 ^= v01
|
||||
v13 = (v13 << 8) | (v13 >> 24)
|
||||
v09 += v13
|
||||
v05 ^= v09
|
||||
v05 = (v05 << 7) | (v05 >> 25)
|
||||
v02 += v06
|
||||
v14 ^= v02
|
||||
v14 = (v14 << 16) | (v14 >> 16)
|
||||
v10 += v14
|
||||
v06 ^= v10
|
||||
v06 = (v06 << 12) | (v06 >> 20)
|
||||
v02 += v06
|
||||
v14 ^= v02
|
||||
v14 = (v14 << 8) | (v14 >> 24)
|
||||
v10 += v14
|
||||
v06 ^= v10
|
||||
v06 = (v06 << 7) | (v06 >> 25)
|
||||
v03 += v07
|
||||
v15 ^= v03
|
||||
v15 = (v15 << 16) | (v15 >> 16)
|
||||
v11 += v15
|
||||
v07 ^= v11
|
||||
v07 = (v07 << 12) | (v07 >> 20)
|
||||
v03 += v07
|
||||
v15 ^= v03
|
||||
v15 = (v15 << 8) | (v15 >> 24)
|
||||
v11 += v15
|
||||
v07 ^= v11
|
||||
v07 = (v07 << 7) | (v07 >> 25)
|
||||
v00 += v05
|
||||
v15 ^= v00
|
||||
v15 = (v15 << 16) | (v15 >> 16)
|
||||
v10 += v15
|
||||
v05 ^= v10
|
||||
v05 = (v05 << 12) | (v05 >> 20)
|
||||
v00 += v05
|
||||
v15 ^= v00
|
||||
v15 = (v15 << 8) | (v15 >> 24)
|
||||
v10 += v15
|
||||
v05 ^= v10
|
||||
v05 = (v05 << 7) | (v05 >> 25)
|
||||
v01 += v06
|
||||
v12 ^= v01
|
||||
v12 = (v12 << 16) | (v12 >> 16)
|
||||
v11 += v12
|
||||
v06 ^= v11
|
||||
v06 = (v06 << 12) | (v06 >> 20)
|
||||
v01 += v06
|
||||
v12 ^= v01
|
||||
v12 = (v12 << 8) | (v12 >> 24)
|
||||
v11 += v12
|
||||
v06 ^= v11
|
||||
v06 = (v06 << 7) | (v06 >> 25)
|
||||
v02 += v07
|
||||
v13 ^= v02
|
||||
v13 = (v13 << 16) | (v13 >> 16)
|
||||
v08 += v13
|
||||
v07 ^= v08
|
||||
v07 = (v07 << 12) | (v07 >> 20)
|
||||
v02 += v07
|
||||
v13 ^= v02
|
||||
v13 = (v13 << 8) | (v13 >> 24)
|
||||
v08 += v13
|
||||
v07 ^= v08
|
||||
v07 = (v07 << 7) | (v07 >> 25)
|
||||
v03 += v04
|
||||
v14 ^= v03
|
||||
v14 = (v14 << 16) | (v14 >> 16)
|
||||
v09 += v14
|
||||
v04 ^= v09
|
||||
v04 = (v04 << 12) | (v04 >> 20)
|
||||
v03 += v04
|
||||
v14 ^= v03
|
||||
v14 = (v14 << 8) | (v14 >> 24)
|
||||
v09 += v14
|
||||
v04 ^= v09
|
||||
v04 = (v04 << 7) | (v04 >> 25)
|
||||
}
|
||||
|
||||
binary.LittleEndian.PutUint32(out[0:], v00)
|
||||
binary.LittleEndian.PutUint32(out[4:], v01)
|
||||
binary.LittleEndian.PutUint32(out[8:], v02)
|
||||
binary.LittleEndian.PutUint32(out[12:], v03)
|
||||
binary.LittleEndian.PutUint32(out[16:], v12)
|
||||
binary.LittleEndian.PutUint32(out[20:], v13)
|
||||
binary.LittleEndian.PutUint32(out[24:], v14)
|
||||
binary.LittleEndian.PutUint32(out[28:], v15)
|
||||
}
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build !amd64,!386 gccgo appengine nacl
|
||||
|
||||
package chacha
|
||||
|
||||
import "encoding/binary"
|
||||
|
||||
func init() {
|
||||
useSSE2 = false
|
||||
useSSSE3 = false
|
||||
useAVX = false
|
||||
useAVX2 = false
|
||||
}
|
||||
|
||||
func initialize(state *[64]byte, key []byte, nonce *[16]byte) {
|
||||
binary.LittleEndian.PutUint32(state[0:], sigma[0])
|
||||
binary.LittleEndian.PutUint32(state[4:], sigma[1])
|
||||
binary.LittleEndian.PutUint32(state[8:], sigma[2])
|
||||
binary.LittleEndian.PutUint32(state[12:], sigma[3])
|
||||
copy(state[16:], key[:])
|
||||
copy(state[48:], nonce[:])
|
||||
}
|
||||
|
||||
func xorKeyStream(dst, src []byte, block, state *[64]byte, rounds int) int {
|
||||
return xorKeyStreamGeneric(dst, src, block, state, rounds)
|
||||
}
|
||||
|
||||
func hChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
||||
hChaCha20Generic(out, nonce, key)
|
||||
}
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
// Copyright (c) 2018 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build 386,!gccgo,!appengine,!nacl amd64,!gccgo,!appengine,!nacl
|
||||
|
||||
#include "textflag.h"
|
||||
|
||||
DATA ·sigma<>+0x00(SB)/4, $0x61707865
|
||||
DATA ·sigma<>+0x04(SB)/4, $0x3320646e
|
||||
DATA ·sigma<>+0x08(SB)/4, $0x79622d32
|
||||
DATA ·sigma<>+0x0C(SB)/4, $0x6b206574
|
||||
GLOBL ·sigma<>(SB), (NOPTR+RODATA), $16 // The 4 ChaCha initialization constants
|
||||
|
||||
// SSE2/SSE3/AVX constants
|
||||
|
||||
DATA ·one<>+0x00(SB)/8, $1
|
||||
DATA ·one<>+0x08(SB)/8, $0
|
||||
GLOBL ·one<>(SB), (NOPTR+RODATA), $16 // The constant 1 as 128 bit value
|
||||
|
||||
DATA ·rol16<>+0x00(SB)/8, $0x0504070601000302
|
||||
DATA ·rol16<>+0x08(SB)/8, $0x0D0C0F0E09080B0A
|
||||
GLOBL ·rol16<>(SB), (NOPTR+RODATA), $16 // The PSHUFB 16 bit left rotate constant
|
||||
|
||||
DATA ·rol8<>+0x00(SB)/8, $0x0605040702010003
|
||||
DATA ·rol8<>+0x08(SB)/8, $0x0E0D0C0F0A09080B
|
||||
GLOBL ·rol8<>(SB), (NOPTR+RODATA), $16 // The PSHUFB 8 bit left rotate constant
|
||||
|
||||
// AVX2 constants
|
||||
|
||||
DATA ·one_AVX2<>+0x00(SB)/8, $0
|
||||
DATA ·one_AVX2<>+0x08(SB)/8, $0
|
||||
DATA ·one_AVX2<>+0x10(SB)/8, $1
|
||||
DATA ·one_AVX2<>+0x18(SB)/8, $0
|
||||
GLOBL ·one_AVX2<>(SB), (NOPTR+RODATA), $32 // The constant 1 as 256 bit value
|
||||
|
||||
DATA ·two_AVX2<>+0x00(SB)/8, $2
|
||||
DATA ·two_AVX2<>+0x08(SB)/8, $0
|
||||
DATA ·two_AVX2<>+0x10(SB)/8, $2
|
||||
DATA ·two_AVX2<>+0x18(SB)/8, $0
|
||||
GLOBL ·two_AVX2<>(SB), (NOPTR+RODATA), $32
|
||||
|
||||
DATA ·rol16_AVX2<>+0x00(SB)/8, $0x0504070601000302
|
||||
DATA ·rol16_AVX2<>+0x08(SB)/8, $0x0D0C0F0E09080B0A
|
||||
DATA ·rol16_AVX2<>+0x10(SB)/8, $0x0504070601000302
|
||||
DATA ·rol16_AVX2<>+0x18(SB)/8, $0x0D0C0F0E09080B0A
|
||||
GLOBL ·rol16_AVX2<>(SB), (NOPTR+RODATA), $32 // The VPSHUFB 16 bit left rotate constant
|
||||
|
||||
DATA ·rol8_AVX2<>+0x00(SB)/8, $0x0605040702010003
|
||||
DATA ·rol8_AVX2<>+0x08(SB)/8, $0x0E0D0C0F0A09080B
|
||||
DATA ·rol8_AVX2<>+0x10(SB)/8, $0x0605040702010003
|
||||
DATA ·rol8_AVX2<>+0x18(SB)/8, $0x0E0D0C0F0A09080B
|
||||
GLOBL ·rol8_AVX2<>(SB), (NOPTR+RODATA), $32 // The VPSHUFB 8 bit left rotate constant
|
||||
|
|
@ -0,0 +1,163 @@
|
|||
// Copyright (c) 2018 Andreas Auernhammer. All rights reserved.
|
||||
// Use of this source code is governed by a license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// +build 386,!gccgo,!appengine,!nacl amd64,!gccgo,!appengine,!nacl
|
||||
|
||||
// ROTL_SSE rotates all 4 32 bit values of the XMM register v
|
||||
// left by n bits using SSE2 instructions (0 <= n <= 32).
|
||||
// The XMM register t is used as a temp. register.
|
||||
#define ROTL_SSE(n, t, v) \
|
||||
MOVO v, t; \
|
||||
PSLLL $n, t; \
|
||||
PSRLL $(32-n), v; \
|
||||
PXOR t, v
|
||||
|
||||
// ROTL_AVX rotates all 4/8 32 bit values of the AVX/AVX2 register v
|
||||
// left by n bits using AVX/AVX2 instructions (0 <= n <= 32).
|
||||
// The AVX/AVX2 register t is used as a temp. register.
|
||||
#define ROTL_AVX(n, t, v) \
|
||||
VPSLLD $n, v, t; \
|
||||
VPSRLD $(32-n), v, v; \
|
||||
VPXOR v, t, v
|
||||
|
||||
// CHACHA_QROUND_SSE2 performs a ChaCha quarter-round using the
|
||||
// 4 XMM registers v0, v1, v2 and v3. It uses only ROTL_SSE2 for
|
||||
// rotations. The XMM register t is used as a temp. register.
|
||||
#define CHACHA_QROUND_SSE2(v0, v1, v2, v3, t) \
|
||||
PADDL v1, v0; \
|
||||
PXOR v0, v3; \
|
||||
ROTL_SSE(16, t, v3); \
|
||||
PADDL v3, v2; \
|
||||
PXOR v2, v1; \
|
||||
ROTL_SSE(12, t, v1); \
|
||||
PADDL v1, v0; \
|
||||
PXOR v0, v3; \
|
||||
ROTL_SSE(8, t, v3); \
|
||||
PADDL v3, v2; \
|
||||
PXOR v2, v1; \
|
||||
ROTL_SSE(7, t, v1)
|
||||
|
||||
// CHACHA_QROUND_SSSE3 performs a ChaCha quarter-round using the
|
||||
// 4 XMM registers v0, v1, v2 and v3. It uses PSHUFB for 8/16 bit
|
||||
// rotations. The XMM register t is used as a temp. register.
|
||||
//
|
||||
// r16 holds the PSHUFB constant for a 16 bit left rotate.
|
||||
// r8 holds the PSHUFB constant for a 8 bit left rotate.
|
||||
#define CHACHA_QROUND_SSSE3(v0, v1, v2, v3, t, r16, r8) \
|
||||
PADDL v1, v0; \
|
||||
PXOR v0, v3; \
|
||||
PSHUFB r16, v3; \
|
||||
PADDL v3, v2; \
|
||||
PXOR v2, v1; \
|
||||
ROTL_SSE(12, t, v1); \
|
||||
PADDL v1, v0; \
|
||||
PXOR v0, v3; \
|
||||
PSHUFB r8, v3; \
|
||||
PADDL v3, v2; \
|
||||
PXOR v2, v1; \
|
||||
ROTL_SSE(7, t, v1)
|
||||
|
||||
// CHACHA_QROUND_AVX performs a ChaCha quarter-round using the
|
||||
// 4 AVX/AVX2 registers v0, v1, v2 and v3. It uses VPSHUFB for 8/16 bit
|
||||
// rotations. The AVX/AVX2 register t is used as a temp. register.
|
||||
//
|
||||
// r16 holds the VPSHUFB constant for a 16 bit left rotate.
|
||||
// r8 holds the VPSHUFB constant for a 8 bit left rotate.
|
||||
#define CHACHA_QROUND_AVX(v0, v1, v2, v3, t, r16, r8) \
|
||||
VPADDD v0, v1, v0; \
|
||||
VPXOR v3, v0, v3; \
|
||||
VPSHUFB r16, v3, v3; \
|
||||
VPADDD v2, v3, v2; \
|
||||
VPXOR v1, v2, v1; \
|
||||
ROTL_AVX(12, t, v1); \
|
||||
VPADDD v0, v1, v0; \
|
||||
VPXOR v3, v0, v3; \
|
||||
VPSHUFB r8, v3, v3; \
|
||||
VPADDD v2, v3, v2; \
|
||||
VPXOR v1, v2, v1; \
|
||||
ROTL_AVX(7, t, v1)
|
||||
|
||||
// CHACHA_SHUFFLE_SSE performs a ChaCha shuffle using the
|
||||
// 3 XMM registers v1, v2 and v3. The inverse shuffle is
|
||||
// performed by switching v1 and v3: CHACHA_SHUFFLE_SSE(v3, v2, v1).
|
||||
#define CHACHA_SHUFFLE_SSE(v1, v2, v3) \
|
||||
PSHUFL $0x39, v1, v1; \
|
||||
PSHUFL $0x4E, v2, v2; \
|
||||
PSHUFL $0x93, v3, v3
|
||||
|
||||
// CHACHA_SHUFFLE_AVX performs a ChaCha shuffle using the
|
||||
// 3 AVX/AVX2 registers v1, v2 and v3. The inverse shuffle is
|
||||
// performed by switching v1 and v3: CHACHA_SHUFFLE_AVX(v3, v2, v1).
|
||||
#define CHACHA_SHUFFLE_AVX(v1, v2, v3) \
|
||||
VPSHUFD $0x39, v1, v1; \
|
||||
VPSHUFD $0x4E, v2, v2; \
|
||||
VPSHUFD $0x93, v3, v3
|
||||
|
||||
// XOR_SSE extracts 4x16 byte vectors from src at
|
||||
// off, xors all vectors with the corresponding XMM
|
||||
// register (v0 - v3) and writes the result to dst
|
||||
// at off.
|
||||
// The XMM register t is used as a temp. register.
|
||||
#define XOR_SSE(dst, src, off, v0, v1, v2, v3, t) \
|
||||
MOVOU 0+off(src), t; \
|
||||
PXOR v0, t; \
|
||||
MOVOU t, 0+off(dst); \
|
||||
MOVOU 16+off(src), t; \
|
||||
PXOR v1, t; \
|
||||
MOVOU t, 16+off(dst); \
|
||||
MOVOU 32+off(src), t; \
|
||||
PXOR v2, t; \
|
||||
MOVOU t, 32+off(dst); \
|
||||
MOVOU 48+off(src), t; \
|
||||
PXOR v3, t; \
|
||||
MOVOU t, 48+off(dst)
|
||||
|
||||
// XOR_AVX extracts 4x16 byte vectors from src at
|
||||
// off, xors all vectors with the corresponding AVX
|
||||
// register (v0 - v3) and writes the result to dst
|
||||
// at off.
|
||||
// The XMM register t is used as a temp. register.
|
||||
#define XOR_AVX(dst, src, off, v0, v1, v2, v3, t) \
|
||||
VPXOR 0+off(src), v0, t; \
|
||||
VMOVDQU t, 0+off(dst); \
|
||||
VPXOR 16+off(src), v1, t; \
|
||||
VMOVDQU t, 16+off(dst); \
|
||||
VPXOR 32+off(src), v2, t; \
|
||||
VMOVDQU t, 32+off(dst); \
|
||||
VPXOR 48+off(src), v3, t; \
|
||||
VMOVDQU t, 48+off(dst)
|
||||
|
||||
#define XOR_AVX2(dst, src, off, v0, v1, v2, v3, t0, t1) \
|
||||
VMOVDQU (0+off)(src), t0; \
|
||||
VPERM2I128 $32, v1, v0, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (0+off)(dst); \
|
||||
VMOVDQU (32+off)(src), t0; \
|
||||
VPERM2I128 $32, v3, v2, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (32+off)(dst); \
|
||||
VMOVDQU (64+off)(src), t0; \
|
||||
VPERM2I128 $49, v1, v0, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (64+off)(dst); \
|
||||
VMOVDQU (96+off)(src), t0; \
|
||||
VPERM2I128 $49, v3, v2, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (96+off)(dst)
|
||||
|
||||
#define XOR_UPPER_AVX2(dst, src, off, v0, v1, v2, v3, t0, t1) \
|
||||
VMOVDQU (0+off)(src), t0; \
|
||||
VPERM2I128 $32, v1, v0, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (0+off)(dst); \
|
||||
VMOVDQU (32+off)(src), t0; \
|
||||
VPERM2I128 $32, v3, v2, t1; \
|
||||
VPXOR t0, t1, t0; \
|
||||
VMOVDQU t0, (32+off)(dst); \
|
||||
|
||||
#define EXTRACT_LOWER(dst, v0, v1, v2, v3, t0) \
|
||||
VPERM2I128 $49, v1, v0, t0; \
|
||||
VMOVDQU t0, 0(dst); \
|
||||
VPERM2I128 $49, v3, v2, t0; \
|
||||
VMOVDQU t0, 32(dst)
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
[568].out
|
||||
_go*
|
||||
_test*
|
||||
_obj
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
ARG GOVERSION=1.14
|
||||
FROM golang:${GOVERSION}
|
||||
|
||||
# Set base env.
|
||||
ARG GOOS=linux
|
||||
ARG GOARCH=amd64
|
||||
ENV GOOS=${GOOS} GOARCH=${GOARCH} CGO_ENABLED=0 GOFLAGS='-v -ldflags=-s -ldflags=-w'
|
||||
|
||||
# Pre compile the stdlib for 386/arm (32bits).
|
||||
RUN go build -a std
|
||||
|
||||
# Add the code to the image.
|
||||
WORKDIR pty
|
||||
ADD . .
|
||||
|
||||
# Build the lib.
|
||||
RUN go build
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
# NOTE: Using 1.13 as a base to build the RISCV compiler, the resulting version is based on go1.6.
|
||||
FROM golang:1.13
|
||||
|
||||
# Clone and complie a riscv compatible version of the go compiler.
|
||||
RUN git clone https://review.gerrithub.io/riscv/riscv-go /riscv-go
|
||||
# riscvdev branch HEAD as of 2019-06-29.
|
||||
RUN cd /riscv-go && git checkout 04885fddd096d09d4450726064d06dd107e374bf
|
||||
ENV PATH=/riscv-go/misc/riscv:/riscv-go/bin:$PATH
|
||||
RUN cd /riscv-go/src && GOROOT_BOOTSTRAP=$(go env GOROOT) ./make.bash
|
||||
ENV GOROOT=/riscv-go
|
||||
|
||||
# Set the base env.
|
||||
ENV GOOS=linux GOARCH=riscv CGO_ENABLED=0 GOFLAGS='-v -ldflags=-s -ldflags=-w'
|
||||
|
||||
# Pre compile the stdlib.
|
||||
RUN go build -a std
|
||||
|
||||
# Add the code to the image.
|
||||
WORKDIR pty
|
||||
ADD . .
|
||||
|
||||
# Build the lib.
|
||||
RUN go build
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
Copyright (c) 2011 Keith Rarick
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated
|
||||
documentation files (the "Software"), to deal in the
|
||||
Software without restriction, including without limitation
|
||||
the rights to use, copy, modify, merge, publish, distribute,
|
||||
sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall
|
||||
be included in all copies or substantial portions of the
|
||||
Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
||||
KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
||||
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
||||
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
|
||||
OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
||||
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
# pty
|
||||
|
||||
Pty is a Go package for using unix pseudo-terminals.
|
||||
|
||||
## Install
|
||||
|
||||
```sh
|
||||
go get github.com/creack/pty
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
Note that those examples are for demonstration purpose only, to showcase how to use the library. They are not meant to be used in any kind of production environment.
|
||||
|
||||
### Command
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"os/exec"
|
||||
|
||||
"github.com/creack/pty"
|
||||
)
|
||||
|
||||
func main() {
|
||||
c := exec.Command("grep", "--color=auto", "bar")
|
||||
f, err := pty.Start(c)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
go func() {
|
||||
f.Write([]byte("foo\n"))
|
||||
f.Write([]byte("bar\n"))
|
||||
f.Write([]byte("baz\n"))
|
||||
f.Write([]byte{4}) // EOT
|
||||
}()
|
||||
io.Copy(os.Stdout, f)
|
||||
}
|
||||
```
|
||||
|
||||
### Shell
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"io"
|
||||
"log"
|
||||
"os"
|
||||
"os/exec"
|
||||
"os/signal"
|
||||
"syscall"
|
||||
|
||||
"github.com/creack/pty"
|
||||
"golang.org/x/term"
|
||||
)
|
||||
|
||||
func test() error {
|
||||
// Create arbitrary command.
|
||||
c := exec.Command("bash")
|
||||
|
||||
// Start the command with a pty.
|
||||
ptmx, err := pty.Start(c)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// Make sure to close the pty at the end.
|
||||
defer func() { _ = ptmx.Close() }() // Best effort.
|
||||
|
||||
// Handle pty size.
|
||||
ch := make(chan os.Signal, 1)
|
||||
signal.Notify(ch, syscall.SIGWINCH)
|
||||
go func() {
|
||||
for range ch {
|
||||
if err := pty.InheritSize(os.Stdin, ptmx); err != nil {
|
||||
log.Printf("error resizing pty: %s", err)
|
||||
}
|
||||
}
|
||||
}()
|
||||
ch <- syscall.SIGWINCH // Initial resize.
|
||||
defer func() { signal.Stop(ch); close(ch) }() // Cleanup signals when done.
|
||||
|
||||
// Set stdin in raw mode.
|
||||
oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
defer func() { _ = term.Restore(int(os.Stdin.Fd()), oldState) }() // Best effort.
|
||||
|
||||
// Copy stdin to the pty and the pty to stdout.
|
||||
// NOTE: The goroutine will keep reading until the next keystroke before returning.
|
||||
go func() { _, _ = io.Copy(ptmx, os.Stdin) }()
|
||||
_, _ = io.Copy(os.Stdout, ptmx)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := test(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
// Copyright 2014 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build gc
|
||||
//+build gc
|
||||
|
||||
#include "textflag.h"
|
||||
|
||||
//
|
||||
// System calls for amd64, Solaris are implemented in runtime/syscall_solaris.go
|
||||
//
|
||||
|
||||
TEXT ·sysvicall6(SB),NOSPLIT,$0-88
|
||||
JMP syscall·sysvicall6(SB)
|
||||
|
||||
TEXT ·rawSysvicall6(SB),NOSPLIT,$0-88
|
||||
JMP syscall·rawSysvicall6(SB)
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
// Package pty provides functions for working with Unix terminals.
|
||||
package pty
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
)
|
||||
|
||||
// ErrUnsupported is returned if a function is not
|
||||
// available on the current platform.
|
||||
var ErrUnsupported = errors.New("unsupported")
|
||||
|
||||
// Open a pty and its corresponding tty.
|
||||
func Open() (pty, tty *os.File, err error) {
|
||||
return open()
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
//go:build !windows && !solaris && !aix
|
||||
// +build !windows,!solaris,!aix
|
||||
|
||||
package pty
|
||||
|
||||
import "syscall"
|
||||
|
||||
const (
|
||||
TIOCGWINSZ = syscall.TIOCGWINSZ
|
||||
TIOCSWINSZ = syscall.TIOCSWINSZ
|
||||
)
|
||||
|
||||
func ioctl(fd, cmd, ptr uintptr) error {
|
||||
_, _, e := syscall.Syscall(syscall.SYS_IOCTL, fd, cmd, ptr)
|
||||
if e != 0 {
|
||||
return e
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
//go:build darwin || dragonfly || freebsd || netbsd || openbsd
|
||||
// +build darwin dragonfly freebsd netbsd openbsd
|
||||
|
||||
package pty
|
||||
|
||||
// from <sys/ioccom.h>
|
||||
const (
|
||||
_IOC_VOID uintptr = 0x20000000
|
||||
_IOC_OUT uintptr = 0x40000000
|
||||
_IOC_IN uintptr = 0x80000000
|
||||
_IOC_IN_OUT uintptr = _IOC_OUT | _IOC_IN
|
||||
_IOC_DIRMASK = _IOC_VOID | _IOC_OUT | _IOC_IN
|
||||
|
||||
_IOC_PARAM_SHIFT = 13
|
||||
_IOC_PARAM_MASK = (1 << _IOC_PARAM_SHIFT) - 1
|
||||
)
|
||||
|
||||
func _IOC_PARM_LEN(ioctl uintptr) uintptr {
|
||||
return (ioctl >> 16) & _IOC_PARAM_MASK
|
||||
}
|
||||
|
||||
func _IOC(inout uintptr, group byte, ioctl_num uintptr, param_len uintptr) uintptr {
|
||||
return inout | (param_len&_IOC_PARAM_MASK)<<16 | uintptr(group)<<8 | ioctl_num
|
||||
}
|
||||
|
||||
func _IO(group byte, ioctl_num uintptr) uintptr {
|
||||
return _IOC(_IOC_VOID, group, ioctl_num, 0)
|
||||
}
|
||||
|
||||
func _IOR(group byte, ioctl_num uintptr, param_len uintptr) uintptr {
|
||||
return _IOC(_IOC_OUT, group, ioctl_num, param_len)
|
||||
}
|
||||
|
||||
func _IOW(group byte, ioctl_num uintptr, param_len uintptr) uintptr {
|
||||
return _IOC(_IOC_IN, group, ioctl_num, param_len)
|
||||
}
|
||||
|
||||
func _IOWR(group byte, ioctl_num uintptr, param_len uintptr) uintptr {
|
||||
return _IOC(_IOC_IN_OUT, group, ioctl_num, param_len)
|
||||
}
|
||||
|
|
@ -0,0 +1,48 @@
|
|||
//go:build solaris
|
||||
// +build solaris
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
//go:cgo_import_dynamic libc_ioctl ioctl "libc.so"
|
||||
//go:linkname procioctl libc_ioctl
|
||||
var procioctl uintptr
|
||||
|
||||
const (
|
||||
// see /usr/include/sys/stropts.h
|
||||
I_PUSH = uintptr((int32('S')<<8 | 002))
|
||||
I_STR = uintptr((int32('S')<<8 | 010))
|
||||
I_FIND = uintptr((int32('S')<<8 | 013))
|
||||
|
||||
// see /usr/include/sys/ptms.h
|
||||
ISPTM = (int32('P') << 8) | 1
|
||||
UNLKPT = (int32('P') << 8) | 2
|
||||
PTSSTTY = (int32('P') << 8) | 3
|
||||
ZONEPT = (int32('P') << 8) | 4
|
||||
OWNERPT = (int32('P') << 8) | 5
|
||||
|
||||
// see /usr/include/sys/termios.h
|
||||
TIOCSWINSZ = (uint32('T') << 8) | 103
|
||||
TIOCGWINSZ = (uint32('T') << 8) | 104
|
||||
)
|
||||
|
||||
type strioctl struct {
|
||||
icCmd int32
|
||||
icTimeout int32
|
||||
icLen int32
|
||||
icDP unsafe.Pointer
|
||||
}
|
||||
|
||||
// Defined in asm_solaris_amd64.s.
|
||||
func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
|
||||
|
||||
func ioctl(fd, cmd, ptr uintptr) error {
|
||||
if _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procioctl)), 3, fd, cmd, ptr, 0, 0, 0); errno != 0 {
|
||||
return errno
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
//go:build aix
|
||||
// +build aix
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
TIOCGWINSZ = 0
|
||||
TIOCSWINSZ = 0
|
||||
)
|
||||
|
||||
func ioctl(fd, cmd, ptr uintptr) error {
|
||||
return ErrUnsupported
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
#!/usr/bin/env bash
|
||||
|
||||
GOOSARCH="${GOOS}_${GOARCH}"
|
||||
case "$GOOSARCH" in
|
||||
_* | *_ | _)
|
||||
echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
GODEFS="go tool cgo -godefs"
|
||||
|
||||
$GODEFS types.go |gofmt > ztypes_$GOARCH.go
|
||||
|
||||
case $GOOS in
|
||||
freebsd|dragonfly|netbsd|openbsd)
|
||||
$GODEFS types_$GOOS.go |gofmt > ztypes_$GOOSARCH.go
|
||||
;;
|
||||
esac
|
||||
|
|
@ -0,0 +1,68 @@
|
|||
//go:build darwin
|
||||
// +build darwin
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
pFD, err := syscall.Open("/dev/ptmx", syscall.O_RDWR|syscall.O_CLOEXEC, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
p := os.NewFile(uintptr(pFD), "/dev/ptmx")
|
||||
// In case of error after this point, make sure we close the ptmx fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := grantpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := unlockpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
t, err := os.OpenFile(sname, os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
n := make([]byte, _IOC_PARM_LEN(syscall.TIOCPTYGNAME))
|
||||
|
||||
err := ioctl(f.Fd(), syscall.TIOCPTYGNAME, uintptr(unsafe.Pointer(&n[0])))
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
for i, c := range n {
|
||||
if c == 0 {
|
||||
return string(n[:i]), nil
|
||||
}
|
||||
}
|
||||
return "", errors.New("TIOCPTYGNAME string not NUL-terminated")
|
||||
}
|
||||
|
||||
func grantpt(f *os.File) error {
|
||||
return ioctl(f.Fd(), syscall.TIOCPTYGRANT, 0)
|
||||
}
|
||||
|
||||
func unlockpt(f *os.File) error {
|
||||
return ioctl(f.Fd(), syscall.TIOCPTYUNLK, 0)
|
||||
}
|
||||
|
|
@ -0,0 +1,83 @@
|
|||
//go:build dragonfly
|
||||
// +build dragonfly
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"strings"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// same code as pty_darwin.go
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
// In case of error after this point, make sure we close the ptmx fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := grantpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := unlockpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
t, err := os.OpenFile(sname, os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func grantpt(f *os.File) error {
|
||||
_, err := isptmaster(f.Fd())
|
||||
return err
|
||||
}
|
||||
|
||||
func unlockpt(f *os.File) error {
|
||||
_, err := isptmaster(f.Fd())
|
||||
return err
|
||||
}
|
||||
|
||||
func isptmaster(fd uintptr) (bool, error) {
|
||||
err := ioctl(fd, syscall.TIOCISPTMASTER, 0)
|
||||
return err == nil, err
|
||||
}
|
||||
|
||||
var (
|
||||
emptyFiodgnameArg fiodgnameArg
|
||||
ioctl_FIODNAME = _IOW('f', 120, unsafe.Sizeof(emptyFiodgnameArg))
|
||||
)
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
name := make([]byte, _C_SPECNAMELEN)
|
||||
fa := fiodgnameArg{Name: (*byte)(unsafe.Pointer(&name[0])), Len: _C_SPECNAMELEN, Pad_cgo_0: [4]byte{0, 0, 0, 0}}
|
||||
|
||||
err := ioctl(f.Fd(), ioctl_FIODNAME, uintptr(unsafe.Pointer(&fa)))
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
for i, c := range name {
|
||||
if c == 0 {
|
||||
s := "/dev/" + string(name[:i])
|
||||
return strings.Replace(s, "ptm", "pts", -1), nil
|
||||
}
|
||||
}
|
||||
return "", errors.New("TIOCPTYGNAME string not NUL-terminated")
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
//go:build freebsd
|
||||
// +build freebsd
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func posixOpenpt(oflag int) (fd int, err error) {
|
||||
r0, _, e1 := syscall.Syscall(syscall.SYS_POSIX_OPENPT, uintptr(oflag), 0, 0)
|
||||
fd = int(r0)
|
||||
if e1 != 0 {
|
||||
err = e1
|
||||
}
|
||||
return fd, err
|
||||
}
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
fd, err := posixOpenpt(syscall.O_RDWR | syscall.O_CLOEXEC)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
p := os.NewFile(uintptr(fd), "/dev/pts")
|
||||
// In case of error after this point, make sure we close the pts fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
t, err := os.OpenFile("/dev/"+sname, os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func isptmaster(fd uintptr) (bool, error) {
|
||||
err := ioctl(fd, syscall.TIOCPTMASTER, 0)
|
||||
return err == nil, err
|
||||
}
|
||||
|
||||
var (
|
||||
emptyFiodgnameArg fiodgnameArg
|
||||
ioctlFIODGNAME = _IOW('f', 120, unsafe.Sizeof(emptyFiodgnameArg))
|
||||
)
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
master, err := isptmaster(f.Fd())
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
if !master {
|
||||
return "", syscall.EINVAL
|
||||
}
|
||||
|
||||
const n = _C_SPECNAMELEN + 1
|
||||
var (
|
||||
buf = make([]byte, n)
|
||||
arg = fiodgnameArg{Len: n, Buf: (*byte)(unsafe.Pointer(&buf[0]))}
|
||||
)
|
||||
if err := ioctl(f.Fd(), ioctlFIODGNAME, uintptr(unsafe.Pointer(&arg))); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
for i, c := range buf {
|
||||
if c == 0 {
|
||||
return string(buf[:i]), nil
|
||||
}
|
||||
}
|
||||
return "", errors.New("FIODGNAME string not NUL-terminated")
|
||||
}
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
//go:build linux
|
||||
// +build linux
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"strconv"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
// In case of error after this point, make sure we close the ptmx fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := unlockpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
t, err := os.OpenFile(sname, os.O_RDWR|syscall.O_NOCTTY, 0) //nolint:gosec // Expected Open from a variable.
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
var n _C_uint
|
||||
err := ioctl(f.Fd(), syscall.TIOCGPTN, uintptr(unsafe.Pointer(&n))) //nolint:gosec // Expected unsafe pointer for Syscall call.
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return "/dev/pts/" + strconv.Itoa(int(n)), nil
|
||||
}
|
||||
|
||||
func unlockpt(f *os.File) error {
|
||||
var u _C_int
|
||||
// use TIOCSPTLCK with a pointer to zero to clear the lock
|
||||
return ioctl(f.Fd(), syscall.TIOCSPTLCK, uintptr(unsafe.Pointer(&u))) //nolint:gosec // Expected unsafe pointer for Syscall call.
|
||||
}
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
//go:build netbsd
|
||||
// +build netbsd
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
// In case of error after this point, make sure we close the ptmx fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := grantpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// In NetBSD unlockpt() does nothing, so it isn't called here.
|
||||
|
||||
t, err := os.OpenFile(sname, os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
/*
|
||||
* from ptsname(3): The ptsname() function is equivalent to:
|
||||
* struct ptmget pm;
|
||||
* ioctl(fd, TIOCPTSNAME, &pm) == -1 ? NULL : pm.sn;
|
||||
*/
|
||||
var ptm ptmget
|
||||
if err := ioctl(f.Fd(), uintptr(ioctl_TIOCPTSNAME), uintptr(unsafe.Pointer(&ptm))); err != nil {
|
||||
return "", err
|
||||
}
|
||||
name := make([]byte, len(ptm.Sn))
|
||||
for i, c := range ptm.Sn {
|
||||
name[i] = byte(c)
|
||||
if c == 0 {
|
||||
return string(name[:i]), nil
|
||||
}
|
||||
}
|
||||
return "", errors.New("TIOCPTSNAME string not NUL-terminated")
|
||||
}
|
||||
|
||||
func grantpt(f *os.File) error {
|
||||
/*
|
||||
* from grantpt(3): Calling grantpt() is equivalent to:
|
||||
* ioctl(fd, TIOCGRANTPT, 0);
|
||||
*/
|
||||
return ioctl(f.Fd(), uintptr(ioctl_TIOCGRANTPT), 0)
|
||||
}
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
//go:build openbsd
|
||||
// +build openbsd
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
/*
|
||||
* from ptm(4):
|
||||
* The PTMGET command allocates a free pseudo terminal, changes its
|
||||
* ownership to the caller, revokes the access privileges for all previous
|
||||
* users, opens the file descriptors for the pty and tty devices and
|
||||
* returns them to the caller in struct ptmget.
|
||||
*/
|
||||
|
||||
p, err := os.OpenFile("/dev/ptm", os.O_RDWR|syscall.O_CLOEXEC, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
var ptm ptmget
|
||||
if err := ioctl(p.Fd(), uintptr(ioctl_PTMGET), uintptr(unsafe.Pointer(&ptm))); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
pty = os.NewFile(uintptr(ptm.Cfd), "/dev/ptm")
|
||||
tty = os.NewFile(uintptr(ptm.Sfd), "/dev/ptm")
|
||||
|
||||
return pty, tty, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,152 @@
|
|||
//go:build solaris
|
||||
// +build solaris
|
||||
|
||||
package pty
|
||||
|
||||
/* based on:
|
||||
http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libc/port/gen/pt.c
|
||||
*/
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"strconv"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
ptmxfd, err := syscall.Open("/dev/ptmx", syscall.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
p := os.NewFile(uintptr(ptmxfd), "/dev/ptmx")
|
||||
// In case of error after this point, make sure we close the ptmx fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = p.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
sname, err := ptsname(p)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := grantpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if err := unlockpt(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
ptsfd, err := syscall.Open(sname, os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
t := os.NewFile(uintptr(ptsfd), sname)
|
||||
|
||||
// In case of error after this point, make sure we close the pts fd.
|
||||
defer func() {
|
||||
if err != nil {
|
||||
_ = t.Close() // Best effort.
|
||||
}
|
||||
}()
|
||||
|
||||
// pushing terminal driver STREAMS modules as per pts(7)
|
||||
for _, mod := range []string{"ptem", "ldterm", "ttcompat"} {
|
||||
if err := streamsPush(t, mod); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return p, t, nil
|
||||
}
|
||||
|
||||
func ptsname(f *os.File) (string, error) {
|
||||
dev, err := ptsdev(f.Fd())
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
fn := "/dev/pts/" + strconv.FormatInt(int64(dev), 10)
|
||||
|
||||
if err := syscall.Access(fn, 0); err != nil {
|
||||
return "", err
|
||||
}
|
||||
return fn, nil
|
||||
}
|
||||
|
||||
func unlockpt(f *os.File) error {
|
||||
istr := strioctl{
|
||||
icCmd: UNLKPT,
|
||||
icTimeout: 0,
|
||||
icLen: 0,
|
||||
icDP: nil,
|
||||
}
|
||||
return ioctl(f.Fd(), I_STR, uintptr(unsafe.Pointer(&istr)))
|
||||
}
|
||||
|
||||
func minor(x uint64) uint64 { return x & 0377 }
|
||||
|
||||
func ptsdev(fd uintptr) (uint64, error) {
|
||||
istr := strioctl{
|
||||
icCmd: ISPTM,
|
||||
icTimeout: 0,
|
||||
icLen: 0,
|
||||
icDP: nil,
|
||||
}
|
||||
|
||||
if err := ioctl(fd, I_STR, uintptr(unsafe.Pointer(&istr))); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
var status syscall.Stat_t
|
||||
if err := syscall.Fstat(int(fd), &status); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return uint64(minor(status.Rdev)), nil
|
||||
}
|
||||
|
||||
type ptOwn struct {
|
||||
rUID int32
|
||||
rGID int32
|
||||
}
|
||||
|
||||
func grantpt(f *os.File) error {
|
||||
if _, err := ptsdev(f.Fd()); err != nil {
|
||||
return err
|
||||
}
|
||||
pto := ptOwn{
|
||||
rUID: int32(os.Getuid()),
|
||||
// XXX should first attempt to get gid of DEFAULT_TTY_GROUP="tty"
|
||||
rGID: int32(os.Getgid()),
|
||||
}
|
||||
istr := strioctl{
|
||||
icCmd: OWNERPT,
|
||||
icTimeout: 0,
|
||||
icLen: int32(unsafe.Sizeof(strioctl{})),
|
||||
icDP: unsafe.Pointer(&pto),
|
||||
}
|
||||
if err := ioctl(f.Fd(), I_STR, uintptr(unsafe.Pointer(&istr))); err != nil {
|
||||
return errors.New("access denied")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// streamsPush pushes STREAMS modules if not already done so.
|
||||
func streamsPush(f *os.File, mod string) error {
|
||||
buf := []byte(mod)
|
||||
|
||||
// XXX I_FIND is not returning an error when the module
|
||||
// is already pushed even though truss reports a return
|
||||
// value of 1. A bug in the Go Solaris syscall interface?
|
||||
// XXX without this we are at risk of the issue
|
||||
// https://www.illumos.org/issues/9042
|
||||
// but since we are not using libc or XPG4.2, we should not be
|
||||
// double-pushing modules
|
||||
|
||||
if err := ioctl(f.Fd(), I_FIND, uintptr(unsafe.Pointer(&buf[0]))); err != nil {
|
||||
return nil
|
||||
}
|
||||
return ioctl(f.Fd(), I_PUSH, uintptr(unsafe.Pointer(&buf[0])))
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build !linux && !darwin && !freebsd && !dragonfly && !netbsd && !openbsd && !solaris
|
||||
// +build !linux,!darwin,!freebsd,!dragonfly,!netbsd,!openbsd,!solaris
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
)
|
||||
|
||||
func open() (pty, tty *os.File, err error) {
|
||||
return nil, nil, ErrUnsupported
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/exec"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// Start assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout,
|
||||
// and c.Stderr, calls c.Start, and returns the File of the tty's
|
||||
// corresponding pty.
|
||||
//
|
||||
// Starts the process in a new session and sets the controlling terminal.
|
||||
func Start(cmd *exec.Cmd) (*os.File, error) {
|
||||
return StartWithSize(cmd, nil)
|
||||
}
|
||||
|
||||
// StartWithAttrs assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout,
|
||||
// and c.Stderr, calls c.Start, and returns the File of the tty's
|
||||
// corresponding pty.
|
||||
//
|
||||
// This will resize the pty to the specified size before starting the command if a size is provided.
|
||||
// The `attrs` parameter overrides the one set in c.SysProcAttr.
|
||||
//
|
||||
// This should generally not be needed. Used in some edge cases where it is needed to create a pty
|
||||
// without a controlling terminal.
|
||||
func StartWithAttrs(c *exec.Cmd, sz *Winsize, attrs *syscall.SysProcAttr) (*os.File, error) {
|
||||
pty, tty, err := Open()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer func() { _ = tty.Close() }() // Best effort.
|
||||
|
||||
if sz != nil {
|
||||
if err := Setsize(pty, sz); err != nil {
|
||||
_ = pty.Close() // Best effort.
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if c.Stdout == nil {
|
||||
c.Stdout = tty
|
||||
}
|
||||
if c.Stderr == nil {
|
||||
c.Stderr = tty
|
||||
}
|
||||
if c.Stdin == nil {
|
||||
c.Stdin = tty
|
||||
}
|
||||
|
||||
c.SysProcAttr = attrs
|
||||
|
||||
if err := c.Start(); err != nil {
|
||||
_ = pty.Close() // Best effort.
|
||||
return nil, err
|
||||
}
|
||||
return pty, err
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
//go:build !windows
|
||||
// +build !windows
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/exec"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// StartWithSize assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout,
|
||||
// and c.Stderr, calls c.Start, and returns the File of the tty's
|
||||
// corresponding pty.
|
||||
//
|
||||
// This will resize the pty to the specified size before starting the command.
|
||||
// Starts the process in a new session and sets the controlling terminal.
|
||||
func StartWithSize(cmd *exec.Cmd, ws *Winsize) (*os.File, error) {
|
||||
if cmd.SysProcAttr == nil {
|
||||
cmd.SysProcAttr = &syscall.SysProcAttr{}
|
||||
}
|
||||
cmd.SysProcAttr.Setsid = true
|
||||
cmd.SysProcAttr.Setctty = true
|
||||
return StartWithAttrs(cmd, ws, cmd.SysProcAttr)
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
//go:build windows
|
||||
// +build windows
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/exec"
|
||||
)
|
||||
|
||||
// StartWithSize assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout,
|
||||
// and c.Stderr, calls c.Start, and returns the File of the tty's
|
||||
// corresponding pty.
|
||||
//
|
||||
// This will resize the pty to the specified size before starting the command.
|
||||
// Starts the process in a new session and sets the controlling terminal.
|
||||
func StartWithSize(cmd *exec.Cmd, ws *Winsize) (*os.File, error) {
|
||||
return nil, ErrUnsupported
|
||||
}
|
||||
|
|
@ -0,0 +1,64 @@
|
|||
#!/usr/bin/env sh
|
||||
|
||||
# Test script checking that all expected os/arch compile properly.
|
||||
# Does not actually test the logic, just the compilation so we make sure we don't break code depending on the lib.
|
||||
|
||||
echo2() {
|
||||
echo $@ >&2
|
||||
}
|
||||
|
||||
trap end 0
|
||||
end() {
|
||||
[ "$?" = 0 ] && echo2 "Pass." || (echo2 "Fail."; exit 1)
|
||||
}
|
||||
|
||||
cross() {
|
||||
os=$1
|
||||
shift
|
||||
echo2 "Build for $os."
|
||||
for arch in $@; do
|
||||
echo2 " - $os/$arch"
|
||||
GOOS=$os GOARCH=$arch go build
|
||||
done
|
||||
echo2
|
||||
}
|
||||
|
||||
set -e
|
||||
|
||||
cross linux amd64 386 arm arm64 ppc64 ppc64le s390x mips mipsle mips64 mips64le
|
||||
cross darwin amd64 arm64
|
||||
cross freebsd amd64 386 arm arm64
|
||||
cross netbsd amd64 386 arm arm64
|
||||
cross openbsd amd64 386 arm arm64
|
||||
cross dragonfly amd64
|
||||
cross solaris amd64
|
||||
|
||||
# Not expected to work but should still compile.
|
||||
cross windows amd64 386 arm
|
||||
|
||||
# TODO: Fix compilation error on openbsd/arm.
|
||||
# TODO: Merge the solaris PR.
|
||||
|
||||
# Some os/arch require a different compiler. Run in docker.
|
||||
if ! hash docker; then
|
||||
# If docker is not present, stop here.
|
||||
return
|
||||
fi
|
||||
|
||||
echo2 "Build for linux."
|
||||
echo2 " - linux/riscv"
|
||||
docker build -t creack-pty-test -f Dockerfile.riscv .
|
||||
|
||||
# Golang dropped support for darwin 32bits since go1.15. Make sure the lib still compile with go1.14 on those archs.
|
||||
echo2 "Build for darwin (32bits)."
|
||||
echo2 " - darwin/386"
|
||||
docker build -t creack-pty-test -f Dockerfile.golang --build-arg=GOVERSION=1.14 --build-arg=GOOS=darwin --build-arg=GOARCH=386 .
|
||||
echo2 " - darwin/arm"
|
||||
docker build -t creack-pty-test -f Dockerfile.golang --build-arg=GOVERSION=1.14 --build-arg=GOOS=darwin --build-arg=GOARCH=arm .
|
||||
|
||||
# Run a single test for an old go version. Would be best with go1.0, but not available on Dockerhub.
|
||||
# Using 1.6 as it is the base version for the RISCV compiler.
|
||||
# Would also be better to run all the tests, not just one, need to refactor this file to allow for specifc archs per version.
|
||||
echo2 "Build for linux - go1.6."
|
||||
echo2 " - linux/amd64"
|
||||
docker build -t creack-pty-test -f Dockerfile.golang --build-arg=GOVERSION=1.6 --build-arg=GOOS=linux --build-arg=GOARCH=amd64 .
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
package pty
|
||||
|
||||
import "os"
|
||||
|
||||
// InheritSize applies the terminal size of pty to tty. This should be run
|
||||
// in a signal handler for syscall.SIGWINCH to automatically resize the tty when
|
||||
// the pty receives a window size change notification.
|
||||
func InheritSize(pty, tty *os.File) error {
|
||||
size, err := GetsizeFull(pty)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := Setsize(tty, size); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Getsize returns the number of rows (lines) and cols (positions
|
||||
// in each line) in terminal t.
|
||||
func Getsize(t *os.File) (rows, cols int, err error) {
|
||||
ws, err := GetsizeFull(t)
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
return int(ws.Rows), int(ws.Cols), nil
|
||||
}
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
//go:build !windows
|
||||
// +build !windows
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Winsize describes the terminal size.
|
||||
type Winsize struct {
|
||||
Rows uint16 // ws_row: Number of rows (in cells)
|
||||
Cols uint16 // ws_col: Number of columns (in cells)
|
||||
X uint16 // ws_xpixel: Width in pixels
|
||||
Y uint16 // ws_ypixel: Height in pixels
|
||||
}
|
||||
|
||||
// Setsize resizes t to s.
|
||||
func Setsize(t *os.File, ws *Winsize) error {
|
||||
//nolint:gosec // Expected unsafe pointer for Syscall call.
|
||||
return ioctl(t.Fd(), syscall.TIOCSWINSZ, uintptr(unsafe.Pointer(ws)))
|
||||
}
|
||||
|
||||
// GetsizeFull returns the full terminal size description.
|
||||
func GetsizeFull(t *os.File) (size *Winsize, err error) {
|
||||
var ws Winsize
|
||||
|
||||
//nolint:gosec // Expected unsafe pointer for Syscall call.
|
||||
if err := ioctl(t.Fd(), syscall.TIOCGWINSZ, uintptr(unsafe.Pointer(&ws))); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &ws, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
//go:build windows
|
||||
// +build windows
|
||||
|
||||
package pty
|
||||
|
||||
import (
|
||||
"os"
|
||||
)
|
||||
|
||||
// Winsize is a dummy struct to enable compilation on unsupported platforms.
|
||||
type Winsize struct {
|
||||
Rows, Cols, X, Y uint16
|
||||
}
|
||||
|
||||
// Setsize resizes t to s.
|
||||
func Setsize(*os.File, *Winsize) error {
|
||||
return ErrUnsupported
|
||||
}
|
||||
|
||||
// GetsizeFull returns the full terminal size description.
|
||||
func GetsizeFull(*os.File) (*Winsize, error) {
|
||||
return nil, ErrUnsupported
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build 386
|
||||
// +build 386
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types.go
|
||||
|
||||
package pty
|
||||
|
||||
type (
|
||||
_C_int int32
|
||||
_C_uint uint32
|
||||
)
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build amd64
|
||||
// +build amd64
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types.go
|
||||
|
||||
package pty
|
||||
|
||||
type (
|
||||
_C_int int32
|
||||
_C_uint uint32
|
||||
)
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build arm
|
||||
// +build arm
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types.go
|
||||
|
||||
package pty
|
||||
|
||||
type (
|
||||
_C_int int32
|
||||
_C_uint uint32
|
||||
)
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build arm64
|
||||
// +build arm64
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types.go
|
||||
|
||||
package pty
|
||||
|
||||
type (
|
||||
_C_int int32
|
||||
_C_uint uint32
|
||||
)
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
//go:build amd64 && dragonfly
|
||||
// +build amd64,dragonfly
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types_dragonfly.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0x3f
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Name *byte
|
||||
Len uint32
|
||||
Pad_cgo_0 [4]byte
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
//go:build 386 && freebsd
|
||||
// +build 386,freebsd
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types_freebsd.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0x3f
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Len int32
|
||||
Buf *byte
|
||||
}
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
//go:build amd64 && freebsd
|
||||
// +build amd64,freebsd
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types_freebsd.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0x3f
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Len int32
|
||||
Pad_cgo_0 [4]byte
|
||||
Buf *byte
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
//go:build arm && freebsd
|
||||
// +build arm,freebsd
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types_freebsd.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0x3f
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Len int32
|
||||
Buf *byte
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
//go:build arm64 && freebsd
|
||||
// +build arm64,freebsd
|
||||
|
||||
// Code generated by cmd/cgo -godefs; DO NOT EDIT.
|
||||
// cgo -godefs types_freebsd.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0xff
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Len int32
|
||||
Buf *byte
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types_freebsd.go
|
||||
|
||||
package pty
|
||||
|
||||
const (
|
||||
_C_SPECNAMELEN = 0x3f
|
||||
)
|
||||
|
||||
type fiodgnameArg struct {
|
||||
Len int32
|
||||
Pad_cgo_0 [4]byte
|
||||
Buf *byte
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
//go:build loong64
|
||||
// +build loong64
|
||||
|
||||
// Created by cgo -godefs - DO NOT EDIT
|
||||
// cgo -godefs types.go
|
||||
|
||||
package pty
|
||||
|
||||
type (
|
||||
_C_int int32
|
||||
_C_uint uint32
|
||||
)
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue