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Add crypto_box_open_easy

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This commit is contained in:
Christian Bundy 2020-08-28 10:06:52 -07:00
parent a09599c2dc
commit 2e9a73a0cf
1 changed files with 71 additions and 8 deletions
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79
crypto_box.js
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@ -4,7 +4,7 @@ const { crypto_scalarmult, crypto_scalarmult_base } = require('./crypto_scalarmu
const { randombytes } = require('./randombytes')
const { crypto_generichash_batch } = require('./crypto_generichash')
const { crypto_stream_xsalsa20_MESSAGEBYTES_MAX } = require('./crypto_stream')
const { crypto_secretbox_open_easy, crypto_secretbox_easy, crypto_secretbox_detached } = require('./crypto_secretbox')
const { crypto_secretbox_open_easy, crypto_secretbox_easy, crypto_secretbox_detached, crypto_secretbox_open_detached } = require('./crypto_secretbox')
const xsalsa20 = require('xsalsa20')
const assert = require('nanoassert')
@ -24,6 +24,7 @@ const crypto_box_MESSAGEBYTES_MAX = crypto_stream_xsalsa20_MESSAGEBYTES_MAX - cr
module.exports = {
crypto_box_easy,
crypto_box_open_easy,
crypto_box_keypair,
crypto_box_seed_keypair,
crypto_box_seal,
@ -116,9 +117,6 @@ function crypto_box_seal_open (m, c, pk, sk) {
// return crypto_core_hsalsa20(k, zero, s, NULL);
// }
function crypto_box_beforenm (k, pk, sk) {
check(pk, crypto_box_PUBLICKEYBYTES)
check(sk, crypto_box_SECRETKEYBYTES)
const zero = new Uint8Array(16)
const s = new Uint8Array(32)
@ -137,7 +135,7 @@ function crypto_box_beforenm (k, pk, sk) {
// return crypto_secretbox_detached(c, mac, m, mlen, n, k);
// }
function crypto_box_detached_afternm (c, mac, m, n, k) {
return crypto_secretbox_detached(c, mac, m, m.length, n, k)
return crypto_secretbox_detached(c, mac, m, n, k)
}
// crypto_box_detached(unsigned char *c, unsigned char *mac,
@ -169,7 +167,7 @@ function crypto_box_detached (c, mac, m, n, pk, sk) {
return -1
}
return crypto_box_detached_afternm(c, mac, m, m.length, n, k)
return crypto_box_detached_afternm(c, mac, m, n, k)
}
// int
@ -184,13 +182,78 @@ function crypto_box_detached (c, mac, m, n, pk, sk) {
// pk, sk);
// }
function crypto_box_easy (c, m, n, pk, sk) {
assert(c.length <= crypto_box_MESSAGEBYTES_MAX, "m should not be more than 'crypto_box_MESSAGEBYTESMAX' bytes")
return crypto_box_detached(c + crypto_box_MACBYTES, c, m, n, pk, sk)
}
// int
// crypto_box_open_detached_afternm(unsigned char *m, const unsigned char *c,
// const unsigned char *mac,
// unsigned long long clen,
// const unsigned char *n,
// const unsigned char *k)
// {
// return crypto_secretbox_open_detached(m, c, mac, clen, n, k);
// }
function crypto_box_open_detached_afternm (m, c, mac, n, k) {
return crypto_secretbox_open_detached(m, c, mac, n, k)
}
// int
// crypto_box_open_detached(unsigned char *m, const unsigned char *c,
// const unsigned char *mac,
// unsigned long long clen, const unsigned char *n,
// const unsigned char *pk, const unsigned char *sk)
// {
// unsigned char k[crypto_box_BEFORENMBYTES];
// int ret;
//
// if (crypto_box_beforenm(k, pk, sk) != 0) {
// return -1;
// }
// ret = crypto_box_open_detached_afternm(m, c, mac, clen, n, k);
// sodium_memzero(k, sizeof k);
//
// return ret;
// }
function crypto_box_open_detached (m, c, mac, n, pk, sk) {
check(mac, crypto_box_MACBYTES)
check(n, crypto_box_NONCEBYTES)
check(pk, crypto_box_PUBLICKEYBYTES)
check(sk, crypto_box_SECRETKEYBYTES)
const k = Uint8Array(crypto_box_BEFORENMBYTES)
if (crypto_box_beforenm(k, pk, sk) !== 0) {
return -1
}
return crypto_box_open_detached_afternm(m, c, mac, n, k)
}
// int
// crypto_box_open_easy(unsigned char *m, const unsigned char *c,
// unsigned long long clen, const unsigned char *n,
// const unsigned char *pk, const unsigned char *sk)
// {
// if (clen < crypto_box_MACBYTES) {
// return -1;
// }
// return crypto_box_open_detached(m, c + crypto_box_MACBYTES, c,
// clen - crypto_box_MACBYTES,
// n, pk, sk);
// }
function crypto_box_open_easy (m, c, n, pk, sk) {
check(m, crypto_box_MACBYTES)
check(n, crypto_box_NONCEBYTES)
check(pk, crypto_box_PUBLICKEYBYTES)
check(sk, crypto_box_SECRETKEYBYTES)
assert(m.length <= crypto_box_MESSAGEBYTES_MAX, "m should not be more than 'crypto_box_MESSAGEBYTESMAX' bytes")
return crypto_box_detached(c + crypto_box_MACBYTES, c, m, m.length, n, pk, sk)
if (c.length < crypto_box_MACBYTES) {
return -1
}
return crypto_box_open_detached(m, c + crypto_box_MACBYTES, c, n, pk, sk)
}
function check (buf, len) {