int
crypto_box_curve25519xchacha20poly1305_beforenm(unsigned char *k,
const unsigned char *pk,
const unsigned char *sk)
{
unsigned char s[32];
if (crypto_scalarmult_curve25519(s, sk, pk) != 0) {
return -1;
}
return crypto_core_hchacha20(k, n, s, NULL);
}
int
crypto_stream_xchacha20_xor_ic(unsigned char *c, const unsigned char *m,
unsigned long long mlen,
const unsigned char *n, uint64_t ic,
const unsigned char *k)
{
unsigned char k2[crypto_core_hchacha20_OUTPUTBYTES];
crypto_core_hchacha20(k2, n, k, NULL);
return crypto_stream_chacha20_xor_ic(c, m, mlen,
n + crypto_core_hchacha20_INPUTBYTES,
ic, k2);
}
int
crypto_stream_xchacha20(unsigned char *c, unsigned long long clen,
const unsigned char *n, const unsigned char *k)
{
unsigned char k2[crypto_core_hchacha20_OUTPUTBYTES];
crypto_core_hchacha20(k2, n, k, NULL);
assert(crypto_stream_chacha20_KEYBYTES <= sizeof k2);
assert(crypto_stream_chacha20_NONCEBYTES ==
(sizeof n) - crypto_core_hchacha20_INPUTBYTES);
return crypto_stream_chacha20(c, clen,
n + crypto_core_hchacha20_INPUTBYTES, k2);
}
static void
tv_hchacha20(void)
{
static const HChaCha20TV tvs[] = {
{ "24f11cce8a1b3d61e441561a696c1c1b7e173d084fd4812425435a8896a013dc", "d9660c5900ae19ddad28d6e06e45fe5e", "5966b3eec3bff1189f831f06afe4d4e3be97fa9235ec8c20d08acfbbb4e851e3" },
{ "80a5f6272031e18bb9bcd84f3385da65e7731b7039f13f5e3d475364cd4d42f7", "c0eccc384b44c88e92c57eb2d5ca4dfa", "6ed11741f724009a640a44fce7320954c46e18e0d7ae063bdbc8d7cf372709df" },
{ "cb1fc686c0eec11a89438b6f4013bf110e7171dace3297f3a657a309b3199629", "fcd49b93e5f8f299227e64d40dc864a3", "84b7e96937a1a0a406bb7162eeaad34308d49de60fd2f7ec9dc6a79cbab2ca34" },
{ "6640f4d80af5496ca1bc2cfff1fefbe99638dbceaabd7d0ade118999d45f053d", "31f59ceeeafdbfe8cae7914caeba90d6", "9af4697d2f5574a44834a2c2ae1a0505af9f5d869dbe381a994a18eb374c36a0" },
{ "0693ff36d971225a44ac92c092c60b399e672e4cc5aafd5e31426f123787ac27", "3a6293da061da405db45be1731d5fc4d", "f87b38609142c01095bfc425573bb3c698f9ae866b7e4216840b9c4caf3b0865" },
{ "809539bd2639a23bf83578700f055f313561c7785a4a19fc9114086915eee551", "780c65d6a3318e479c02141d3f0b3918", "902ea8ce4680c09395ce71874d242f84274243a156938aaa2dd37ac5be382b42" },
{ "1a170ddf25a4fd69b648926e6d794e73408805835c64b2c70efddd8cd1c56ce0", "05dbee10de87eb0c5acb2b66ebbe67d3", "a4e20b634c77d7db908d387b48ec2b370059db916e8ea7716dc07238532d5981" },
{ "3b354e4bb69b5b4a1126f509e84cad49f18c9f5f29f0be0c821316a6986e15a6", "d8a89af02f4b8b2901d8321796388b6c", "9816cb1a5b61993735a4b161b51ed2265b696e7ded5309c229a5a99f53534fbc" },
{ "4b9a818892e15a530db50dd2832e95ee192e5ed6afffb408bd624a0c4e12a081", "a9079c551de70501be0286d1bc78b045", "ebc5224cf41ea97473683b6c2f38a084bf6e1feaaeff62676db59d5b719d999b" },
{ "c49758f00003714c38f1d4972bde57ee8271f543b91e07ebce56b554eb7fa6a7", "31f0204e10cf4f2035f9e62bb5ba7303", "0dd8cc400f702d2c06ed920be52048a287076b86480ae273c6d568a2e9e7518c" }
};
const HChaCha20TV *tv;
unsigned char *constant;
unsigned char *key;
unsigned char *in;
unsigned char *out;
unsigned char *out2;
int i;
constant = (unsigned char *) sodium_malloc(crypto_core_hchacha20_CONSTBYTES);
key = (unsigned char *) sodium_malloc(crypto_core_hchacha20_KEYBYTES);
in = (unsigned char *) sodium_malloc(crypto_core_hchacha20_INPUTBYTES);
out = (unsigned char *) sodium_malloc(crypto_core_hchacha20_OUTPUTBYTES);
out2 = (unsigned char *) sodium_malloc(crypto_core_hchacha20_OUTPUTBYTES);
for (i = 0; i < (sizeof tvs) / (sizeof tvs[0]); i++) {
tv = &tvs[i];
sodium_hex2bin(key, crypto_core_hchacha20_KEYBYTES,
tv->key, strlen(tv->key), NULL, NULL, NULL);
sodium_hex2bin(in, crypto_core_hchacha20_INPUTBYTES,
tv->in, strlen(tv->in), NULL, NULL, NULL);
sodium_hex2bin(out, crypto_core_hchacha20_OUTPUTBYTES,
tv->out, strlen(tv->out), NULL, NULL, NULL);
crypto_core_hchacha20(out2, in, key, NULL);
assert(memcmp(out, out2, crypto_core_hchacha20_OUTPUTBYTES) == 0);
}
sodium_hex2bin(constant, crypto_core_hchacha20_CONSTBYTES,
"0d29b795c1ca70c1652e823364d32417",
crypto_core_hchacha20_CONSTBYTES * 2 + 1, NULL, NULL, NULL);
sodium_hex2bin(out, crypto_core_hchacha20_OUTPUTBYTES,
"934d941d78eb9bfc2f0376f7ccd4a11ecf0c6a44104618a9749ef47fe97037a2",
crypto_core_hchacha20_OUTPUTBYTES * 2 + 1, NULL, NULL, NULL);
crypto_core_hchacha20(out2, in, key, constant);
assert(memcmp(out, out2, crypto_core_hchacha20_OUTPUTBYTES) == 0);
sodium_free(out2);
sodium_free(out);
sodium_free(in);
sodium_free(key);
sodium_free(constant);
assert(crypto_core_hchacha20_outputbytes() == crypto_core_hchacha20_OUTPUTBYTES);
assert(crypto_core_hchacha20_inputbytes() == crypto_core_hchacha20_INPUTBYTES);
assert(crypto_core_hchacha20_keybytes() == crypto_core_hchacha20_KEYBYTES);
assert(crypto_core_hchacha20_constbytes() == crypto_core_hchacha20_CONSTBYTES);
printf("tv_hchacha20: ok\n");
}