40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
/* eslint-disable camelcase */
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const test = require('brittle')
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const sodium = require('..')
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test('crypto_scalarmult_base', function (t) {
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const keys = keyPair()
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t.not(keys.secretKey, Buffer.alloc(keys.secretKey.length), 'secret key not blank')
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t.not(keys.publicKey, Buffer.alloc(keys.publicKey.length), 'public key not blank')
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})
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test('crypto_scalarmult', function (t) {
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const peer1 = keyPair()
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const peer2 = keyPair()
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t.not(peer1.secretKey, peer2.secretKey, 'diff secret keys')
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t.not(peer1.publicKey, peer2.publicKey, 'diff public keys')
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const shared1 = Buffer.alloc(sodium.crypto_scalarmult_BYTES)
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const shared2 = Buffer.alloc(sodium.crypto_scalarmult_BYTES)
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sodium.crypto_scalarmult(shared1, peer1.secretKey, peer2.publicKey)
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sodium.crypto_scalarmult(shared2, peer2.secretKey, peer1.publicKey)
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t.alike(shared1, shared2, 'same shared secret')
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})
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function keyPair () {
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const secretKey = Buffer.alloc(sodium.crypto_scalarmult_SCALARBYTES)
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sodium.randombytes_buf(secretKey)
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const publicKey = Buffer.alloc(sodium.crypto_scalarmult_BYTES)
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sodium.crypto_scalarmult_base(publicKey, secretKey)
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return {
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publicKey,
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secretKey
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}
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}
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