e597b14bae
Problem: randombytes_buf uses the size of the buffer as the number of bytes to output, so we don't need to add an argument about the number of bytes we want. Solution: Remove unused argument and use buffer size assertion to be sure that we're producing the correct number of random bytes.
35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
/* eslint-disable camelcase */
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const { crypto_scalarmult_base } = require('./crypto_scalarmult')
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const { crypto_generichash } = require('./crypto_generichash')
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const { randombytes_buf } = require('./randombytes')
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const assert = require('nanoassert')
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const crypto_kx_SEEDBYTES = 32
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const crypto_kx_PUBLICKEYBYTES = 32
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const crypto_kx_SECRETKEYBYTES = 32
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function crypto_kx_keypair (pk, sk) {
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assert(pk.byteLength === crypto_kx_PUBLICKEYBYTES, "pk must be 'crypto_kx_PUBLICKEYBYTES' bytes")
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assert(sk.byteLength === crypto_kx_SECRETKEYBYTES, "sk must be 'crypto_kx_SECRETKEYBYTES' bytes")
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randombytes_buf(sk)
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return crypto_scalarmult_base(pk, sk)
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}
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function crypto_kx_seed_keypair (pk, sk, seed) {
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assert(pk.byteLength === crypto_kx_PUBLICKEYBYTES, "pk must be 'crypto_kx_PUBLICKEYBYTES' bytes")
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assert(sk.byteLength === crypto_kx_SECRETKEYBYTES, "sk must be 'crypto_kx_SECRETKEYBYTES' bytes")
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assert(seed.byteLength === crypto_kx_SEEDBYTES, "seed must be 'crypto_kx_SEEDBYTES' bytes")
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crypto_generichash(sk, seed)
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return crypto_scalarmult_base(pk, sk)
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}
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module.exports = {
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crypto_kx_keypair,
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crypto_kx_seed_keypair,
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crypto_kx_SEEDBYTES,
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crypto_kx_SECRETKEYBYTES,
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crypto_kx_PUBLICKEYBYTES
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}
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