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working on understanding poly1305 initialization

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This commit is contained in:
Theron Spiegl 2020-11-22 21:30:18 -06:00
parent b4b58c62a6
commit b6fe5fde1c
1 changed files with 25 additions and 1 deletions
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26
crypto_secretstream.js
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@ -1,7 +1,7 @@
/* eslint-disable camelcase */
const { assert } = require('nanoassert')
const { randombytes_buf } = require('./randombytes')
const { crypto_stream_chacha20_ietf_KEYBYTES, crypto_stream_chacha20_ietf_NONCEBYTES, crypto_stream_chacha20_ietf_xor } = require('./crypto_stream_chacha20')
const { crypto_stream_chacha20_ietf, crypto_stream_chacha20_ietf_xor, crypto_stream_chacha20_ietf_KEYBYTES, crypto_stream_chacha20_ietf_NONCEBYTES, } = require('./crypto_stream_chacha20')
const { crypto_core_hchacha20, crypto_core_hchacha20_INPUTBYTES } = require('./crypto_core_hchacha20')
const crypto_secretstream_xchacha20poly1305_COUNTERBYTES = 4
@ -15,6 +15,17 @@ const crypto_secretstream_xchacha20poly1305_KEYBYTES = crypto_aead_xchacha20poly
const crypto_aead_xchacha20poly1305_ietf_NPUBBYTES = 24
const crypto_secretstream_xchacha20poly1305_HEADERBYTES = crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
// #define crypto_aead_xchacha20poly1305_ietf_ABYTES 16U
const crypto_aead_xchacha20poly1305_ietf_ABYTES = 16
// #define crypto_secretstream_xchacha20poly1305_ABYTES \
// (1U + crypto_aead_xchacha20poly1305_ietf_ABYTES)
const crypto_secretstream_xchacha20poly1305_ABYTES = 1 + crypto_aead_xchacha20poly1305_ietf_ABYTES
// #define crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX \
// SODIUM_MIN(SODIUM_SIZE_MAX - crypto_secretstream_xchacha20poly1305_ABYTES, \
// (64ULL * ((1ULL << 32) - 2ULL)))
const crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX = Number.MAX_SAFE_INTEGER
// #define STATE_COUNTER(STATE) ((STATE)->nonce)
// #define STATE_INONCE(STATE) ((STATE)->nonce + \
// crypto_secretstream_xchacha20poly1305_COUNTERBYTES)
@ -248,6 +259,19 @@ function crypto_secretstream_xchacha20poly1305_rekey (state) {
// }
// return 0;
// }
function crypto_secretstream_xchacha20poly1305_push (state, out, m, ad, tag) {
// assert(out instanceof Uint8Array && out.length === outlen, "out is not byte array of length outlen")
// assert(m instanceof Uint8Array && m.length === mlen, "m is not byte array of length mlen")
// assert(ad instanceof Uint8Array && ad.length === adlen, "ad is not byte array of length adlen")
const block = new Uint8Array(64)
const slen = new Uint8Array(8)
assert(crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX
<= crypto_aead_chacha20poly1305_ietf_MESSAGEBYTES_MAX)
crypto_stream_chacha20_ietf(block, state.nonce, state.k)
}
// int
// crypto_secretstream_xchacha20poly1305_pull