mirror of https://gogs.blitter.com/RLabs/xs
Split core KEx and net support code
This commit is contained in:
Russ Magee
parent
2faee8eae1
commit
f7a3be637b
BIN
demo/client
BIN
demo/client
Binary file not shown.
|
|
@ -6,6 +6,12 @@ import (
|
|||
hkex "blitter.com/herradurakex"
|
||||
)
|
||||
|
||||
// Demo of a simple client that dials up to a simple test server to
|
||||
// send data.
|
||||
// Note this code is identical to standard tcp client code, save for
|
||||
// declaring a 'hkex' rather than a 'net' Dialer Conn. The KEx and
|
||||
// encrypt/decrypt is done within the type.
|
||||
// Compare to 'clientp.go' in this directory to see the equivalence.
|
||||
func main() {
|
||||
conn, err := hkex.Dial("tcp", "localhost:2000")
|
||||
if err != nil {
|
||||
|
|
|
|||
BIN
demo/server
BIN
demo/server
Binary file not shown.
|
|
@ -8,6 +8,11 @@ import (
|
|||
hkex "blitter.com/herradurakex"
|
||||
)
|
||||
|
||||
// Demo of a simple server that listens and spawns goroutines for each
|
||||
// connecting client. Note this code is identical to standard tcp
|
||||
// server code, save for declaring 'hkex' rather than 'net'
|
||||
// Listener and Conns. The KEx and encrypt/decrypt is done within the type.
|
||||
// Compare to 'serverp.go' in this directory to see the equivalence.
|
||||
func main() {
|
||||
// Listen on TCP port 2000 on all available unicast and
|
||||
// anycast IP addresses of the local system.
|
||||
|
|
|
|||
136
herradurakex.go
136
herradurakex.go
|
|
@ -17,11 +17,14 @@
|
|||
golang implementation by Russ Magee (rmagee_at_gmail.com) */
|
||||
package herradurakex
|
||||
|
||||
/* This is the core KEx algorithm. For client/server net support code,
|
||||
See hkexnet.go for a golang/pkg/net for the compatible Conn interface
|
||||
using this to transparently negotiate keys and secure a network channel. */
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math/big"
|
||||
"math/rand"
|
||||
"net"
|
||||
"time"
|
||||
)
|
||||
|
||||
|
|
@ -143,134 +146,3 @@ func (h *HerraduraKEx) String() string {
|
|||
h.PeerD.Text(16),
|
||||
h.fa.Text(16))
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
type Conn struct {
|
||||
c net.Conn // which also implements io.Reader, io.Writer, ...
|
||||
h *HerraduraKEx
|
||||
}
|
||||
|
||||
// Dial as net.Dial(), but with implicit HKEx PeerD read on connect
|
||||
func Dial(protocol string, ipport string) (hc *Conn, err error) {
|
||||
c, err := net.Dial(protocol, ipport)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
hc = &Conn{c, New(0, 0)}
|
||||
|
||||
// KEx
|
||||
fmt.Fprintf(c, "0x%s\n", hc.h.d.Text(16))
|
||||
|
||||
d := big.NewInt(0)
|
||||
_, err = fmt.Fscanln(c, d)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("**(c)** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
hc.h.FA()
|
||||
fmt.Printf("**(c)** FA:%s\n", hc.h.fa)
|
||||
return
|
||||
}
|
||||
|
||||
func (hc *Conn) Close() (err error) {
|
||||
err = hc.c.Close()
|
||||
fmt.Println("[Conn Closing]")
|
||||
return
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
type HKExListener struct {
|
||||
l net.Listener
|
||||
}
|
||||
|
||||
func Listen(protocol string, ipport string) (hl HKExListener, e error) {
|
||||
l, err := net.Listen(protocol, ipport)
|
||||
if err != nil {
|
||||
return HKExListener{nil}, err
|
||||
}
|
||||
fmt.Println("[Listening]")
|
||||
hl.l = l
|
||||
return
|
||||
}
|
||||
|
||||
func (hl *HKExListener) Close() {
|
||||
hl.l.Close()
|
||||
fmt.Println("[Listener Closed]")
|
||||
}
|
||||
|
||||
func (hl *HKExListener) Accept() (hc Conn, err error) {
|
||||
c, err := hl.l.Accept()
|
||||
|
||||
fmt.Println("[Accepted]")
|
||||
if err != nil {
|
||||
return Conn{nil, nil}, err
|
||||
}
|
||||
hc = Conn{c, New(0, 0)}
|
||||
|
||||
d := big.NewInt(0)
|
||||
_, err = fmt.Fscanln(c, d)
|
||||
if err != nil {
|
||||
fmt.Println("[Error]")
|
||||
return hc, err
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("**(s)** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
hc.h.FA()
|
||||
fmt.Printf("**(s)** FA:%s\n", hc.h.fa)
|
||||
|
||||
// KEx
|
||||
fmt.Fprintf(c, "0x%s\n", hc.h.d.Text(16))
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
func (hc Conn) Read(b []byte) (n int, err error) {
|
||||
n, err = hc.c.Read(b)
|
||||
fmt.Printf("[Decrypting...]\n")
|
||||
fmt.Printf("[ciphertext:%+v]\n", b[0:n])
|
||||
for i := 0; i < n; i++ {
|
||||
//for i, _ := range b {
|
||||
// FOR TESTING ONLY!! USE REAL CRYPTO HERE
|
||||
//b[i] ^= byte( hc.h.d.Mod(hc.h.d, big.NewInt(int64(c))).Int64() )
|
||||
b[i] ^= hc.h.fa.Bytes()[0]
|
||||
}
|
||||
fmt.Printf("[plaintext:%+v]\n", b[0:n])
|
||||
return
|
||||
}
|
||||
|
||||
func (hc Conn) Write(b []byte) (n int, err error) {
|
||||
fmt.Printf("[Encrypting...]\n")
|
||||
for i, _ := range b {
|
||||
// FOR TESTING ONLY!! USE REAL CRYPTO HERE
|
||||
//b[i] ^= byte( hc.h.d.Mod(hc.h.d, big.NewInt(int64(c))).Int64() )
|
||||
b[i] ^= hc.h.fa.Bytes()[0]
|
||||
}
|
||||
fmt.Printf("[ciphertext:%+v]\n", b)
|
||||
n, err = hc.c.Write(b)
|
||||
return
|
||||
}
|
||||
|
||||
// Return c coerced into a HKEx Conn (which implements interface net.Conn)
|
||||
// Only useful if one wants to convert an open connection later to HKEx
|
||||
// (Use Dial() instead to start with HKEx automatically.)
|
||||
func NewHKExConn(c *net.Conn) (hc *Conn) {
|
||||
hc = new(Conn)
|
||||
|
||||
hc.c = *c
|
||||
hc.h = New(0, 0)
|
||||
d := big.NewInt(0)
|
||||
_, err := fmt.Fscanln(hc.c, d)
|
||||
if err != nil {
|
||||
//
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
return
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,153 @@
|
|||
/* -*- go -*-
|
||||
* $RCSfile$ $Revision$ : $Date$ : $Author$
|
||||
*
|
||||
* Description
|
||||
*
|
||||
* Notes
|
||||
*
|
||||
**************
|
||||
*
|
||||
* Copyright (c) 2018 Russtopia Labs. All Rights Reserved.
|
||||
*
|
||||
* This document may not, in whole or in part, be copied, photocopied,
|
||||
* reproduced, translated, or reduced to any electronic medium or machine
|
||||
* readable form without prior written consent from Russtopia Labs.
|
||||
*/
|
||||
package herradurakex
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math/big"
|
||||
"net"
|
||||
)
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
type Conn struct {
|
||||
c net.Conn // which also implements io.Reader, io.Writer, ...
|
||||
h *HerraduraKEx
|
||||
}
|
||||
|
||||
// Dial as net.Dial(), but with implicit HKEx PeerD read on connect
|
||||
func Dial(protocol string, ipport string) (hc *Conn, err error) {
|
||||
c, err := net.Dial(protocol, ipport)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
hc = &Conn{c, New(0, 0)}
|
||||
|
||||
// KEx
|
||||
fmt.Fprintf(c, "0x%s\n", hc.h.d.Text(16))
|
||||
|
||||
d := big.NewInt(0)
|
||||
_, err = fmt.Fscanln(c, d)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("**(c)** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
hc.h.FA()
|
||||
fmt.Printf("**(c)** FA:%s\n", hc.h.fa)
|
||||
return
|
||||
}
|
||||
|
||||
func (hc *Conn) Close() (err error) {
|
||||
err = hc.c.Close()
|
||||
fmt.Println("[Conn Closing]")
|
||||
return
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
type HKExListener struct {
|
||||
l net.Listener
|
||||
}
|
||||
|
||||
func Listen(protocol string, ipport string) (hl HKExListener, e error) {
|
||||
l, err := net.Listen(protocol, ipport)
|
||||
if err != nil {
|
||||
return HKExListener{nil}, err
|
||||
}
|
||||
fmt.Println("[Listening]")
|
||||
hl.l = l
|
||||
return
|
||||
}
|
||||
|
||||
func (hl *HKExListener) Close() {
|
||||
hl.l.Close()
|
||||
fmt.Println("[Listener Closed]")
|
||||
}
|
||||
|
||||
func (hl *HKExListener) Accept() (hc Conn, err error) {
|
||||
c, err := hl.l.Accept()
|
||||
|
||||
fmt.Println("[Accepted]")
|
||||
if err != nil {
|
||||
return Conn{nil, nil}, err
|
||||
}
|
||||
hc = Conn{c, New(0, 0)}
|
||||
|
||||
d := big.NewInt(0)
|
||||
_, err = fmt.Fscanln(c, d)
|
||||
if err != nil {
|
||||
fmt.Println("[Error]")
|
||||
return hc, err
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("**(s)** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
hc.h.FA()
|
||||
fmt.Printf("**(s)** FA:%s\n", hc.h.fa)
|
||||
|
||||
// KEx
|
||||
fmt.Fprintf(c, "0x%s\n", hc.h.d.Text(16))
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
func (hc Conn) Read(b []byte) (n int, err error) {
|
||||
n, err = hc.c.Read(b)
|
||||
fmt.Printf("[Decrypting...]\n")
|
||||
fmt.Printf("[ciphertext:%+v]\n", b[0:n])
|
||||
for i := 0; i < n; i++ {
|
||||
//for i, _ := range b {
|
||||
// FOR TESTING ONLY!! USE REAL CRYPTO HERE
|
||||
//b[i] ^= byte( hc.h.d.Mod(hc.h.d, big.NewInt(int64(c))).Int64() )
|
||||
b[i] ^= hc.h.fa.Bytes()[0]
|
||||
}
|
||||
fmt.Printf("[plaintext:%+v]\n", b[0:n])
|
||||
return
|
||||
}
|
||||
|
||||
func (hc Conn) Write(b []byte) (n int, err error) {
|
||||
fmt.Printf("[Encrypting...]\n")
|
||||
for i, _ := range b {
|
||||
// FOR TESTING ONLY!! USE REAL CRYPTO HERE
|
||||
//b[i] ^= byte( hc.h.d.Mod(hc.h.d, big.NewInt(int64(c))).Int64() )
|
||||
b[i] ^= hc.h.fa.Bytes()[0]
|
||||
}
|
||||
fmt.Printf("[ciphertext:%+v]\n", b)
|
||||
n, err = hc.c.Write(b)
|
||||
return
|
||||
}
|
||||
|
||||
// Return c coerced into a HKEx Conn (which implements interface net.Conn)
|
||||
// Only useful if one wants to convert an open connection later to HKEx
|
||||
// (Use Dial() instead to start with HKEx automatically.)
|
||||
func NewHKExConn(c *net.Conn) (hc *Conn) {
|
||||
hc = new(Conn)
|
||||
|
||||
hc.c = *c
|
||||
hc.h = New(0, 0)
|
||||
d := big.NewInt(0)
|
||||
_, err := fmt.Fscanln(hc.c, d)
|
||||
if err != nil {
|
||||
//
|
||||
}
|
||||
hc.h.PeerD = d
|
||||
fmt.Printf("** D:%s\n", hc.h.d.Text(16))
|
||||
fmt.Printf("** peerD:%s\n", hc.h.PeerD.Text(16))
|
||||
return
|
||||
}
|
||||
Loading…
Reference in New Issue