void ed25519_sign(unsigned char *signature, const unsigned char *message, int32_t message_len, const unsigned char *public_key, const unsigned char *private_key) {
sha3_context ctx;
unsigned char hram[64];
unsigned char r[64];
ge_p3 R;
sha3_init512(&ctx);
sha3_update(&ctx, private_key + 32, 32);
sha3_update(&ctx, message, message_len);
sha3_finalize(&ctx, &r);
sc_reduce(r);
ge_scalarmult_base(&R, r);
ge_p3_tobytes(signature, &R);
sha3_init512(&ctx);
sha3_update(&ctx, signature, 32);
sha3_update(&ctx, public_key, 32);
sha3_update(&ctx, message, message_len);
sha3_finalize(&ctx, hram);
sc_reduce(hram);
sc_muladd(signature + 32, hram, private_key, r);
}
void notrand_seed(void *data, size_t len)
{
sha3_ctx_t ctx;
sha3_init(&ctx, 64);
sha3_update(&ctx, nrpool, 3 * 64);
sha3_update(&ctx, data, len);
sha3_final(nrpool[2], &ctx);
}
static int calc_steps_and_compare_hash_512(const uint8_t *msg1, size_t msg1_len,
const uint8_t *msg2, size_t msg2_len, const uint8_t *expected)
{
static unsigned char hash[SHA3_512_DIGEST_LENGTH];
keccak_state_t state;
sha3_512_init(&state);
sha3_update(&state, msg1, msg1_len);
sha3_update(&state, msg2, msg2_len);
sha3_512_final(&state, hash);
return (memcmp(expected, hash, sizeof(hash)) == 0);
}
void sha3_512(const unsigned char *message, size_t message_len, unsigned char *out) {
sha3_context ctx;
sha3_init512(&ctx);
sha3_update(&ctx, message, message_len);
sha3_finalize(&ctx, out);
}
static void
sha3_256_extremely_long_message_1_t (ut_test_t *const t)
{
const char *const pattern = "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno";
const size_t repeats = 16777216;
const size_t pattern_len = strlen(pattern);
const char *const expected_msg_digest_as_string =
"ecbbc42cbf296603" "acb2c6bc0410ef43" "78bafb24b710357f" "12df607758b33e2b";
char msg_digest[sha3_256_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_256_digest_lenght);
for (int i = 0; i < repeats; i++) {
sha3_update(&ctx, pattern, pattern_len);
}
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_256_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_256_1M_a_1_t (ut_test_t *const t)
{
char msg[1000 + 1];
for (int i = 0; i < 1000; i++) {
msg[i] = 'a';
}
msg[1000] = '\0';
const char *const expected_msg_digest_as_string =
"5c8875ae474a3634" "ba4fd55ec85bffd6" "61f32aca75c6d699" "d0cdcb6c115891c1";
char msg_digest[sha3_256_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_256_digest_lenght);
for (int i = 0; i < 1000; i++)
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_256_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_256_896_bits_t (ut_test_t *const t)
{
const char *const msg = "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";
const char *const expected_msg_digest_as_string =
"916f6061fe879741" "ca6469b43971dfdb" "28b1a32dc36cb325" "4e812be27aad1d18";
char msg_digest[sha3_256_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_256_digest_lenght);
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_256_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_256_empty_string_t (ut_test_t *const t)
{
const char *const msg = "";
const char *const expected_msg_digest_as_string =
"a7ffc6f8bf1ed766" "51c14756a061d662" "f580ff4de43b49fa" "82d80a4b80f8434a";
char msg_digest[sha3_256_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_256_digest_lenght);
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_256_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_256_abc_t (ut_test_t *const t)
{
const char *const msg = "abc";
const char *const expected_msg_digest_as_string =
"3a985da74fe225b2" "045c172d6bd390bd" "855f086e3e9d525b" "46bfe24511431532";
char msg_digest[sha3_256_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_256_digest_lenght);
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_256_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_512_empty_string_t (ut_test_t *const t)
{
const char *const msg = "";
const char *const expected_msg_digest_as_string =
"a69f73cca23a9ac5" "c8b567dc185a756e" "97c982164fe25859" "e0d1dcc1475c80a6"
"15b2123af1f5f94c" "11e3e9402c3ac558" "f500199d95b6d3e3" "01758586281dcd26";
char msg_digest[sha3_512_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_512_digest_lenght);
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_512_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
static void
sha3_512_abc_t (ut_test_t *const t)
{
const char *const msg = "abc";
const char *const expected_msg_digest_as_string =
"b751850b1a57168a" "5693cd924b6b096e" "08f621827444f70d" "884f5d0240d2712e"
"10e116e9192af3c9" "1a7ec57647e39340" "57340b4cf408d5a5" "6592f8274eec53f0";
char msg_digest[sha3_512_digest_lenght];
char msg_digest_as_string[sha3_256_digest_lenght * 2 + 1]; // Two hex digit per byte plus string termination.
size_t msg_len = strlen(msg);
sha3_ctx_t ctx;
sha3_init(&ctx, sha3_512_digest_lenght);
sha3_update(&ctx, msg, msg_len);
sha3_final(&ctx, msg_digest);
sha3_msg_digest_to_string(msg_digest_as_string, msg_digest, sha3_512_digest_lenght);
ut_assert(t, strcmp(expected_msg_digest_as_string, msg_digest_as_string) == 0);
}
//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------//
// update hash
void sha3_224_t::update(const void * const p, uint64_t size)
{
if (this->psha3_224_item == NULL) return;
sha3_update(&this->ctx, (uint8_t *)p, size);
}
void hash_update_sha3(void * ctx, const uint8_t * input, size_t length)
{
sha3_update((sha3_state *)ctx, input, length);
}
