| 1 | var generatePrime = require('./lib/generatePrime')
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| 2 | var primes = require('./lib/primes.json')
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| 3 |
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| 4 | var DH = require('./lib/dh')
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| 5 |
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| 6 | function getDiffieHellman (mod) {
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| 7 | var prime = new Buffer(primes[mod].prime, 'hex')
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| 8 | var gen = new Buffer(primes[mod].gen, 'hex')
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| 9 |
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| 10 | return new DH(prime, gen)
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| 11 | }
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| 12 |
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| 13 | var ENCODINGS = {
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| 14 | 'binary': true, 'hex': true, 'base64': true
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| 15 | }
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| 16 |
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| 17 | function createDiffieHellman (prime, enc, generator, genc) {
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| 18 | if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) {
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| 19 | return createDiffieHellman(prime, 'binary', enc, generator)
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| 20 | }
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| 21 |
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| 22 | enc = enc || 'binary'
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| 23 | genc = genc || 'binary'
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| 24 | generator = generator || new Buffer([2])
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| 25 |
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| 26 | if (!Buffer.isBuffer(generator)) {
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| 27 | generator = new Buffer(generator, genc)
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| 28 | }
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| 29 |
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| 30 | if (typeof prime === 'number') {
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| 31 | return new DH(generatePrime(prime, generator), generator, true)
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| 32 | }
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| 33 |
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| 34 | if (!Buffer.isBuffer(prime)) {
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| 35 | prime = new Buffer(prime, enc)
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| 36 | }
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| 37 |
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| 38 | return new DH(prime, generator, true)
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| 39 | }
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| 40 |
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| 41 | exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman
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| 42 | exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman
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