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