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path: root/libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c
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Diffstat (limited to 'libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c')
-rw-r--r--libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c436
1 files changed, 436 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c b/libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c
new file mode 100644
index 0000000000..91435a1b16
--- /dev/null
+++ b/libs/libsodium/src/crypto_generichash/blake2b/ref/blake2b-ref.c
@@ -0,0 +1,436 @@
+/*
+ BLAKE2 reference source code package - C implementations
+
+ Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
+
+ To the extent possible under law, the author(s) have dedicated all copyright
+ and related and neighboring rights to this software to the public domain
+ worldwide. This software is distributed without any warranty.
+
+ You should have received a copy of the CC0 Public Domain Dedication along
+ with
+ this software. If not, see
+ <http://creativecommons.org/publicdomain/zero/1.0/>.
+*/
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "blake2.h"
+#include "core.h"
+#include "private/common.h"
+#include "runtime.h"
+#include "utils.h"
+
+static blake2b_compress_fn blake2b_compress = blake2b_compress_ref;
+
+static const uint64_t blake2b_IV[8] = {
+ 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, 0x3c6ef372fe94f82bULL,
+ 0xa54ff53a5f1d36f1ULL, 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
+ 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+};
+
+/* LCOV_EXCL_START */
+static inline int
+blake2b_set_lastnode(blake2b_state *S)
+{
+ S->f[1] = -1;
+ return 0;
+}
+/* LCOV_EXCL_STOP */
+
+static inline int
+blake2b_is_lastblock(const blake2b_state *S)
+{
+ return S->f[0] != 0;
+}
+
+static inline int
+blake2b_set_lastblock(blake2b_state *S)
+{
+ if (S->last_node)
+ blake2b_set_lastnode(S);
+
+ S->f[0] = -1;
+ return 0;
+}
+
+static inline int
+blake2b_increment_counter(blake2b_state *S, const uint64_t inc)
+{
+#ifdef HAVE_TI_MODE
+ uint128_t t = ((uint128_t) S->t[1] << 64) | S->t[0];
+ t += inc;
+ S->t[0] = (uint64_t)(t >> 0);
+ S->t[1] = (uint64_t)(t >> 64);
+#else
+ S->t[0] += inc;
+ S->t[1] += (S->t[0] < inc);
+#endif
+ return 0;
+}
+
+/* Parameter-related functions */
+static inline int
+blake2b_param_set_salt(blake2b_param *P, const uint8_t salt[BLAKE2B_SALTBYTES])
+{
+ memcpy(P->salt, salt, BLAKE2B_SALTBYTES);
+ return 0;
+}
+
+static inline int
+blake2b_param_set_personal(blake2b_param *P,
+ const uint8_t personal[BLAKE2B_PERSONALBYTES])
+{
+ memcpy(P->personal, personal, BLAKE2B_PERSONALBYTES);
+ return 0;
+}
+
+static inline int
+blake2b_init0(blake2b_state *S)
+{
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ S->h[i] = blake2b_IV[i];
+ }
+ memset(S->t, 0, offsetof(blake2b_state, last_node) + sizeof(S->last_node)
+ - offsetof(blake2b_state, t));
+ return 0;
+}
+
+/* init xors IV with input parameter block */
+int
+blake2b_init_param(blake2b_state *S, const blake2b_param *P)
+{
+ size_t i;
+ const uint8_t *p;
+
+ COMPILER_ASSERT(sizeof *P == 64);
+ blake2b_init0(S);
+ p = (const uint8_t *) (P);
+
+ /* IV XOR ParamBlock */
+ for (i = 0; i < 8; i++) {
+ S->h[i] ^= LOAD64_LE(p + sizeof(S->h[i]) * i);
+ }
+ return 0;
+}
+
+int
+blake2b_init(blake2b_state *S, const uint8_t outlen)
+{
+ blake2b_param P[1];
+
+ if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) {
+ sodium_misuse();
+ }
+ P->digest_length = outlen;
+ P->key_length = 0;
+ P->fanout = 1;
+ P->depth = 1;
+ STORE32_LE(P->leaf_length, 0);
+ STORE64_LE(P->node_offset, 0);
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset(P->reserved, 0, sizeof(P->reserved));
+ memset(P->salt, 0, sizeof(P->salt));
+ memset(P->personal, 0, sizeof(P->personal));
+ return blake2b_init_param(S, P);
+}
+
+int
+blake2b_init_salt_personal(blake2b_state *S, const uint8_t outlen,
+ const void *salt, const void *personal)
+{
+ blake2b_param P[1];
+
+ if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) {
+ sodium_misuse();
+ }
+ P->digest_length = outlen;
+ P->key_length = 0;
+ P->fanout = 1;
+ P->depth = 1;
+ STORE32_LE(P->leaf_length, 0);
+ STORE64_LE(P->node_offset, 0);
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset(P->reserved, 0, sizeof(P->reserved));
+ if (salt != NULL) {
+ blake2b_param_set_salt(P, (const uint8_t *) salt);
+ } else {
+ memset(P->salt, 0, sizeof(P->salt));
+ }
+ if (personal != NULL) {
+ blake2b_param_set_personal(P, (const uint8_t *) personal);
+ } else {
+ memset(P->personal, 0, sizeof(P->personal));
+ }
+ return blake2b_init_param(S, P);
+}
+
+int
+blake2b_init_key(blake2b_state *S, const uint8_t outlen, const void *key,
+ const uint8_t keylen)
+{
+ blake2b_param P[1];
+
+ if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) {
+ sodium_misuse();
+ }
+ if (!key || !keylen || keylen > BLAKE2B_KEYBYTES) {
+ sodium_misuse();
+ }
+ P->digest_length = outlen;
+ P->key_length = keylen;
+ P->fanout = 1;
+ P->depth = 1;
+ STORE32_LE(P->leaf_length, 0);
+ STORE64_LE(P->node_offset, 0);
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset(P->reserved, 0, sizeof(P->reserved));
+ memset(P->salt, 0, sizeof(P->salt));
+ memset(P->personal, 0, sizeof(P->personal));
+
+ if (blake2b_init_param(S, P) < 0) {
+ sodium_misuse();
+ }
+ {
+ uint8_t block[BLAKE2B_BLOCKBYTES];
+ memset(block, 0, BLAKE2B_BLOCKBYTES);
+ memcpy(block, key, keylen); /* keylen cannot be 0 */
+ blake2b_update(S, block, BLAKE2B_BLOCKBYTES);
+ sodium_memzero(block, BLAKE2B_BLOCKBYTES); /* Burn the key from stack */
+ }
+ return 0;
+}
+
+int
+blake2b_init_key_salt_personal(blake2b_state *S, const uint8_t outlen,
+ const void *key, const uint8_t keylen,
+ const void *salt, const void *personal)
+{
+ blake2b_param P[1];
+
+ if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) {
+ sodium_misuse();
+ }
+ if (!key || !keylen || keylen > BLAKE2B_KEYBYTES) {
+ sodium_misuse();
+ }
+ P->digest_length = outlen;
+ P->key_length = keylen;
+ P->fanout = 1;
+ P->depth = 1;
+ STORE32_LE(P->leaf_length, 0);
+ STORE64_LE(P->node_offset, 0);
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset(P->reserved, 0, sizeof(P->reserved));
+ if (salt != NULL) {
+ blake2b_param_set_salt(P, (const uint8_t *) salt);
+ } else {
+ memset(P->salt, 0, sizeof(P->salt));
+ }
+ if (personal != NULL) {
+ blake2b_param_set_personal(P, (const uint8_t *) personal);
+ } else {
+ memset(P->personal, 0, sizeof(P->personal));
+ }
+
+ if (blake2b_init_param(S, P) < 0) {
+ sodium_misuse();
+ }
+ {
+ uint8_t block[BLAKE2B_BLOCKBYTES];
+ memset(block, 0, BLAKE2B_BLOCKBYTES);
+ memcpy(block, key, keylen); /* keylen cannot be 0 */
+ blake2b_update(S, block, BLAKE2B_BLOCKBYTES);
+ sodium_memzero(block, BLAKE2B_BLOCKBYTES); /* Burn the key from stack */
+ }
+ return 0;
+}
+
+/* inlen now in bytes */
+int
+blake2b_update(blake2b_state *S, const uint8_t *in, uint64_t inlen)
+{
+ while (inlen > 0) {
+ size_t left = S->buflen;
+ size_t fill = 2 * BLAKE2B_BLOCKBYTES - left;
+
+ if (inlen > fill) {
+ memcpy(S->buf + left, in, fill); /* Fill buffer */
+ S->buflen += fill;
+ blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
+ blake2b_compress(S, S->buf); /* Compress */
+ memcpy(S->buf, S->buf + BLAKE2B_BLOCKBYTES,
+ BLAKE2B_BLOCKBYTES); /* Shift buffer left */
+ S->buflen -= BLAKE2B_BLOCKBYTES;
+ in += fill;
+ inlen -= fill;
+ } else /* inlen <= fill */
+ {
+ memcpy(S->buf + left, in, inlen);
+ S->buflen += inlen; /* Be lazy, do not compress */
+ in += inlen;
+ inlen -= inlen;
+ }
+ }
+
+ return 0;
+}
+
+int
+blake2b_final(blake2b_state *S, uint8_t *out, uint8_t outlen)
+{
+ unsigned char buffer[BLAKE2B_OUTBYTES];
+
+ if (!outlen || outlen > BLAKE2B_OUTBYTES) {
+ sodium_misuse();
+ }
+ if (blake2b_is_lastblock(S)) {
+ return -1;
+ }
+ if (S->buflen > BLAKE2B_BLOCKBYTES) {
+ blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
+ blake2b_compress(S, S->buf);
+ S->buflen -= BLAKE2B_BLOCKBYTES;
+ assert(S->buflen <= BLAKE2B_BLOCKBYTES);
+ memcpy(S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen);
+ }
+
+ blake2b_increment_counter(S, S->buflen);
+ blake2b_set_lastblock(S);
+ memset(S->buf + S->buflen, 0,
+ 2 * BLAKE2B_BLOCKBYTES - S->buflen); /* Padding */
+ blake2b_compress(S, S->buf);
+
+ COMPILER_ASSERT(sizeof buffer == 64U);
+ STORE64_LE(buffer + 8 * 0, S->h[0]);
+ STORE64_LE(buffer + 8 * 1, S->h[1]);
+ STORE64_LE(buffer + 8 * 2, S->h[2]);
+ STORE64_LE(buffer + 8 * 3, S->h[3]);
+ STORE64_LE(buffer + 8 * 4, S->h[4]);
+ STORE64_LE(buffer + 8 * 5, S->h[5]);
+ STORE64_LE(buffer + 8 * 6, S->h[6]);
+ STORE64_LE(buffer + 8 * 7, S->h[7]);
+ memcpy(out, buffer, outlen); /* outlen <= BLAKE2B_OUTBYTES (64) */
+
+ sodium_memzero(S->h, sizeof S->h);
+ sodium_memzero(S->buf, sizeof S->buf);
+
+ return 0;
+}
+
+/* inlen, at least, should be uint64_t. Others can be size_t. */
+int
+blake2b(uint8_t *out, const void *in, const void *key, const uint8_t outlen,
+ const uint64_t inlen, uint8_t keylen)
+{
+ blake2b_state S[1];
+
+ /* Verify parameters */
+ if (NULL == in && inlen > 0) {
+ sodium_misuse();
+ }
+ if (NULL == out) {
+ sodium_misuse();
+ }
+ if (!outlen || outlen > BLAKE2B_OUTBYTES) {
+ sodium_misuse();
+ }
+ if (NULL == key && keylen > 0) {
+ sodium_misuse();
+ }
+ if (keylen > BLAKE2B_KEYBYTES) {
+ sodium_misuse();
+ }
+ if (keylen > 0) {
+ if (blake2b_init_key(S, outlen, key, keylen) < 0) {
+ sodium_misuse();
+ }
+ } else {
+ if (blake2b_init(S, outlen) < 0) {
+ sodium_misuse();
+ }
+ }
+
+ blake2b_update(S, (const uint8_t *) in, inlen);
+ blake2b_final(S, out, outlen);
+ return 0;
+}
+
+int
+blake2b_salt_personal(uint8_t *out, const void *in, const void *key,
+ const uint8_t outlen, const uint64_t inlen,
+ uint8_t keylen, const void *salt, const void *personal)
+{
+ blake2b_state S[1];
+
+ /* Verify parameters */
+ if (NULL == in && inlen > 0) {
+ sodium_misuse();
+ }
+ if (NULL == out) {
+ sodium_misuse();
+ }
+ if (!outlen || outlen > BLAKE2B_OUTBYTES) {
+ sodium_misuse();
+ }
+ if (NULL == key && keylen > 0) {
+ sodium_misuse();
+ }
+ if (keylen > BLAKE2B_KEYBYTES) {
+ sodium_misuse();
+ }
+ if (keylen > 0) {
+ if (blake2b_init_key_salt_personal(S, outlen, key, keylen, salt,
+ personal) < 0) {
+ sodium_misuse();
+ }
+ } else {
+ if (blake2b_init_salt_personal(S, outlen, salt, personal) < 0) {
+ sodium_misuse();
+ }
+ }
+
+ blake2b_update(S, (const uint8_t *) in, inlen);
+ blake2b_final(S, out, outlen);
+ return 0;
+}
+
+int
+blake2b_pick_best_implementation(void)
+{
+/* LCOV_EXCL_START */
+#if defined(HAVE_AVX2INTRIN_H) && defined(HAVE_TMMINTRIN_H) && \
+ defined(HAVE_SMMINTRIN_H)
+ if (sodium_runtime_has_avx2()) {
+ blake2b_compress = blake2b_compress_avx2;
+ return 0;
+ }
+#endif
+#if defined(HAVE_EMMINTRIN_H) && defined(HAVE_TMMINTRIN_H) && \
+ defined(HAVE_SMMINTRIN_H)
+ if (sodium_runtime_has_sse41()) {
+ blake2b_compress = blake2b_compress_sse41;
+ return 0;
+ }
+#endif
+#if defined(HAVE_EMMINTRIN_H) && defined(HAVE_TMMINTRIN_H)
+ if (sodium_runtime_has_ssse3()) {
+ blake2b_compress = blake2b_compress_ssse3;
+ return 0;
+ }
+#endif
+ blake2b_compress = blake2b_compress_ref;
+
+ return 0;
+ /* LCOV_EXCL_STOP */
+}
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