43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
|
var generatePrime = require('./lib/generatePrime')
|
||
|
|
var primes = require('./lib/primes.json')
|
||
|
|
|
||
|
|
var DH = require('./lib/dh')
|
||
|
|
|
||
|
|
function getDiffieHellman (mod) {
|
||
|
|
var prime = new Buffer(primes[mod].prime, 'hex')
|
||
|
|
var gen = new Buffer(primes[mod].gen, 'hex')
|
||
|
|
|
||
|
|
return new DH(prime, gen)
|
||
|
|
}
|
||
|
|
|
||
|
|
var ENCODINGS = {
|
||
|
|
'binary': true, 'hex': true, 'base64': true
|
||
|
|
}
|
||
|
|
|
||
|
|
function createDiffieHellman (prime, enc, generator, genc) {
|
||
|
|
if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) {
|
||
|
|
return createDiffieHellman(prime, 'binary', enc, generator)
|
||
|
|
}
|
||
|
|
|
||
|
|
enc = enc || 'binary'
|
||
|
|
genc = genc || 'binary'
|
||
|
|
generator = generator || new Buffer([2])
|
||
|
|
|
||
|
|
if (!Buffer.isBuffer(generator)) {
|
||
|
|
generator = new Buffer(generator, genc)
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof prime === 'number') {
|
||
|
|
return new DH(generatePrime(prime, generator), generator, true)
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!Buffer.isBuffer(prime)) {
|
||
|
|
prime = new Buffer(prime, enc)
|
||
|
|
}
|
||
|
|
|
||
|
|
return new DH(prime, generator, true)
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman
|
||
|
|
exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman
|