| 1 | var test = require('tape')
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| 2 | var crypto = require('diffie-hellman/browser')
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| 3 |
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| 4 | test('diffie-hellman mod groups', function (t) {
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| 5 | [
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| 6 | 'modp1', 'modp2', 'modp5', 'modp14', 'modp15', 'modp16'
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| 7 | ].forEach(function (mod) {
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| 8 | t.test(mod, function (t) {
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| 9 | t.plan(3)
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| 10 | var dh1 = crypto.getDiffieHellman(mod)
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| 11 | var p1 = dh1.getPrime().toString('hex')
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| 12 | dh1.generateKeys()
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| 13 | var dh2 = crypto.getDiffieHellman(mod)
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| 14 | var p2 = dh2.getPrime().toString('hex')
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| 15 | dh2.generateKeys()
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| 16 | t.equals(p1, p2, 'equal primes')
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| 17 | var pubk1 = dh1.getPublicKey()
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| 18 | var pubk2 = dh2.getPublicKey()
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| 19 | t.notEquals(pubk1, pubk2, 'diff public keys')
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| 20 | var pub1 = dh1.computeSecret(pubk2).toString('hex')
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| 21 | var pub2 = dh2.computeSecret(dh1.getPublicKey()).toString('hex')
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| 22 | t.equals(pub1, pub2, 'equal secrets')
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| 23 | })
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| 24 | })
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| 25 | })
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| 26 |
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| 27 | test('diffie-hellman key lengths', function (t) {
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| 28 | [
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| 29 | 64, 65, 192
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| 30 | ].forEach(function (len) {
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| 31 | t.test('' + len, function (t) {
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| 32 | t.plan(3)
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| 33 | var dh2 = crypto.createDiffieHellman(len)
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| 34 | var prime2 = dh2.getPrime()
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| 35 | var p2 = prime2.toString('hex')
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| 36 | var dh1 = crypto.createDiffieHellman(prime2)
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| 37 | var p1 = dh1.getPrime().toString('hex')
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| 38 | dh1.generateKeys()
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| 39 | dh2.generateKeys()
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| 40 | t.equals(p1, p2, 'equal primes')
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| 41 | var pubk1 = dh1.getPublicKey()
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| 42 | var pubk2 = dh2.getPublicKey()
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| 43 | t.notEquals(pubk1, pubk2, 'diff public keys')
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| 44 | var pub1 = dh1.computeSecret(pubk2).toString('hex')
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| 45 | var pub2 = dh2.computeSecret(dh1.getPublicKey()).toString('hex')
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| 46 | t.equals(pub1, pub2, 'equal secrets')
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| 47 | })
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| 48 | })
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| 49 | })
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