mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-15 12:08:59 +00:00
315 lines
9.6 KiB
C
315 lines
9.6 KiB
C
/*
|
|
BLAKE2 reference source code package - reference C implementations
|
|
|
|
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
|
|
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
|
|
your option. The terms of these licenses can be found at:
|
|
|
|
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
|
|
- OpenSSL license : https://www.openssl.org/source/license.html
|
|
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
More information about the BLAKE2 hash function can be found at
|
|
https://blake2.net.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "blake2_common.h"
|
|
#include "blake2b.h"
|
|
#include "memzero.h"
|
|
#include "options.h"
|
|
|
|
typedef struct blake2b_param__ {
|
|
uint8_t digest_length; /* 1 */
|
|
uint8_t key_length; /* 2 */
|
|
uint8_t fanout; /* 3 */
|
|
uint8_t depth; /* 4 */
|
|
uint32_t leaf_length; /* 8 */
|
|
uint32_t node_offset; /* 12 */
|
|
uint32_t xof_length; /* 16 */
|
|
uint8_t node_depth; /* 17 */
|
|
uint8_t inner_length; /* 18 */
|
|
uint8_t reserved[14]; /* 32 */
|
|
uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
|
|
uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
|
|
} __attribute__((packed)) blake2b_param;
|
|
|
|
static const uint64_t blake2b_IV[8] = {
|
|
0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, 0x3c6ef372fe94f82bULL,
|
|
0xa54ff53a5f1d36f1ULL, 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
|
|
0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL};
|
|
|
|
static const uint8_t blake2b_sigma[12][16] = {
|
|
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
|
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
|
|
{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},
|
|
{7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},
|
|
{9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},
|
|
{2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},
|
|
{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},
|
|
{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},
|
|
{6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},
|
|
{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0},
|
|
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
|
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3}};
|
|
|
|
static void blake2b_set_lastnode(blake2b_state *S) { S->f[1] = (uint64_t)-1; }
|
|
|
|
/* Some helper functions, not necessarily useful */
|
|
static int blake2b_is_lastblock(const blake2b_state *S) { return S->f[0] != 0; }
|
|
|
|
static void blake2b_set_lastblock(blake2b_state *S) {
|
|
if (S->last_node) blake2b_set_lastnode(S);
|
|
|
|
S->f[0] = (uint64_t)-1;
|
|
}
|
|
|
|
static void blake2b_increment_counter(blake2b_state *S, const uint64_t inc) {
|
|
S->t[0] += inc;
|
|
S->t[1] += (S->t[0] < inc);
|
|
}
|
|
|
|
static void blake2b_init0(blake2b_state *S) {
|
|
size_t i = 0;
|
|
memzero(S, sizeof(blake2b_state));
|
|
|
|
for (i = 0; i < 8; ++i) S->h[i] = blake2b_IV[i];
|
|
}
|
|
|
|
/* init xors IV with input parameter block */
|
|
int blake2b_init_param(blake2b_state *S, const blake2b_param *P) {
|
|
const uint8_t *p = (const uint8_t *)(P);
|
|
size_t i = 0;
|
|
|
|
blake2b_init0(S);
|
|
|
|
/* IV XOR ParamBlock */
|
|
for (i = 0; i < 8; ++i) S->h[i] ^= load64(p + sizeof(S->h[i]) * i);
|
|
|
|
S->outlen = P->digest_length;
|
|
return 0;
|
|
}
|
|
|
|
/* Sequential blake2b initialization */
|
|
int blake2b_Init(blake2b_state *S, size_t outlen) {
|
|
blake2b_param P[1] = {0};
|
|
|
|
if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) return -1;
|
|
|
|
P->digest_length = (uint8_t)outlen;
|
|
P->key_length = 0;
|
|
P->fanout = 1;
|
|
P->depth = 1;
|
|
store32(&P->leaf_length, 0);
|
|
store32(&P->node_offset, 0);
|
|
store32(&P->xof_length, 0);
|
|
P->node_depth = 0;
|
|
P->inner_length = 0;
|
|
memzero(P->reserved, sizeof(P->reserved));
|
|
memzero(P->salt, sizeof(P->salt));
|
|
memzero(P->personal, sizeof(P->personal));
|
|
return blake2b_init_param(S, P);
|
|
}
|
|
|
|
int blake2b_InitPersonal(blake2b_state *S, size_t outlen, const void *personal,
|
|
size_t personal_len) {
|
|
blake2b_param P[1] = {0};
|
|
|
|
if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) return -1;
|
|
if ((!personal) || (personal_len != BLAKE2B_PERSONALBYTES)) return -1;
|
|
|
|
P->digest_length = (uint8_t)outlen;
|
|
P->key_length = 0;
|
|
P->fanout = 1;
|
|
P->depth = 1;
|
|
store32(&P->leaf_length, 0);
|
|
store32(&P->node_offset, 0);
|
|
store32(&P->xof_length, 0);
|
|
P->node_depth = 0;
|
|
P->inner_length = 0;
|
|
memzero(P->reserved, sizeof(P->reserved));
|
|
memzero(P->salt, sizeof(P->salt));
|
|
memcpy(P->personal, personal, BLAKE2B_PERSONALBYTES);
|
|
return blake2b_init_param(S, P);
|
|
}
|
|
|
|
int blake2b_InitKey(blake2b_state *S, size_t outlen, const void *key,
|
|
size_t keylen) {
|
|
blake2b_param P[1] = {0};
|
|
|
|
if ((!outlen) || (outlen > BLAKE2B_OUTBYTES)) return -1;
|
|
|
|
if (!key || !keylen || keylen > BLAKE2B_KEYBYTES) return -1;
|
|
|
|
P->digest_length = (uint8_t)outlen;
|
|
P->key_length = (uint8_t)keylen;
|
|
P->fanout = 1;
|
|
P->depth = 1;
|
|
store32(&P->leaf_length, 0);
|
|
store32(&P->node_offset, 0);
|
|
store32(&P->xof_length, 0);
|
|
P->node_depth = 0;
|
|
P->inner_length = 0;
|
|
memzero(P->reserved, sizeof(P->reserved));
|
|
memzero(P->salt, sizeof(P->salt));
|
|
memzero(P->personal, sizeof(P->personal));
|
|
|
|
if (blake2b_init_param(S, P) < 0) return -1;
|
|
|
|
{
|
|
uint8_t block[BLAKE2B_BLOCKBYTES] = {0};
|
|
memzero(block, BLAKE2B_BLOCKBYTES);
|
|
memcpy(block, key, keylen);
|
|
blake2b_Update(S, block, BLAKE2B_BLOCKBYTES);
|
|
memzero(block, BLAKE2B_BLOCKBYTES); /* Burn the key from stack */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define G(m, r, i, a, b, c, d) \
|
|
do { \
|
|
*(a) = *(a) + *(b) + m[blake2b_sigma[r][2 * i + 0]]; \
|
|
*(d) = rotr64(*(d) ^ *(a), 32); \
|
|
*(c) = *(c) + *(d); \
|
|
*(b) = rotr64(*(b) ^ *(c), 24); \
|
|
*(a) = *(a) + *(b) + m[blake2b_sigma[r][2 * i + 1]]; \
|
|
*(d) = rotr64(*(d) ^ *(a), 16); \
|
|
*(c) = *(c) + *(d); \
|
|
*(b) = rotr64(*(b) ^ *(c), 63); \
|
|
} while (0)
|
|
|
|
#if OPTIMIZE_SIZE_BLAKE2B
|
|
static void g(uint64_t *m, int r, int i, uint64_t *a, uint64_t *b, uint64_t *c,
|
|
uint64_t *d) {
|
|
G(m, r, i, a, b, c, d);
|
|
}
|
|
#else
|
|
#define g(m, r, i, a, b, c, d) G(m, r, i, a, b, c, d)
|
|
#endif
|
|
|
|
#define ROUND(m, v, r) \
|
|
do { \
|
|
g(m, r, 0, v + 0, v + 4, v + 8, v + 12); \
|
|
g(m, r, 1, v + 1, v + 5, v + 9, v + 13); \
|
|
g(m, r, 2, v + 2, v + 6, v + 10, v + 14); \
|
|
g(m, r, 3, v + 3, v + 7, v + 11, v + 15); \
|
|
g(m, r, 4, v + 0, v + 5, v + 10, v + 15); \
|
|
g(m, r, 5, v + 1, v + 6, v + 11, v + 12); \
|
|
g(m, r, 6, v + 2, v + 7, v + 8, v + 13); \
|
|
g(m, r, 7, v + 3, v + 4, v + 9, v + 14); \
|
|
} while (0)
|
|
|
|
static void blake2b_compress(blake2b_state *S,
|
|
const uint8_t block[BLAKE2B_BLOCKBYTES]) {
|
|
uint64_t m[16] = {0};
|
|
uint64_t v[16] = {0};
|
|
size_t i = 0;
|
|
|
|
for (i = 0; i < 16; ++i) {
|
|
m[i] = load64(block + i * sizeof(m[i]));
|
|
}
|
|
|
|
for (i = 0; i < 8; ++i) {
|
|
v[i] = S->h[i];
|
|
}
|
|
|
|
v[8] = blake2b_IV[0];
|
|
v[9] = blake2b_IV[1];
|
|
v[10] = blake2b_IV[2];
|
|
v[11] = blake2b_IV[3];
|
|
v[12] = blake2b_IV[4] ^ S->t[0];
|
|
v[13] = blake2b_IV[5] ^ S->t[1];
|
|
v[14] = blake2b_IV[6] ^ S->f[0];
|
|
v[15] = blake2b_IV[7] ^ S->f[1];
|
|
|
|
#if OPTIMIZE_SIZE_BLAKE2B
|
|
for (int r = 0; r < 12; r++) {
|
|
ROUND(m, v, r);
|
|
}
|
|
#else
|
|
ROUND(m, v, 0);
|
|
ROUND(m, v, 1);
|
|
ROUND(m, v, 2);
|
|
ROUND(m, v, 3);
|
|
ROUND(m, v, 4);
|
|
ROUND(m, v, 5);
|
|
ROUND(m, v, 6);
|
|
ROUND(m, v, 7);
|
|
ROUND(m, v, 8);
|
|
ROUND(m, v, 9);
|
|
ROUND(m, v, 10);
|
|
ROUND(m, v, 11);
|
|
#endif
|
|
|
|
for (i = 0; i < 8; ++i) {
|
|
S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
|
|
}
|
|
}
|
|
|
|
#undef G
|
|
#undef ROUND
|
|
|
|
int blake2b_Update(blake2b_state *S, const void *pin, size_t inlen) {
|
|
const unsigned char *in = (const unsigned char *)pin;
|
|
if (inlen > 0) {
|
|
size_t left = S->buflen;
|
|
size_t fill = BLAKE2B_BLOCKBYTES - left;
|
|
if (inlen > fill) {
|
|
S->buflen = 0;
|
|
memcpy(S->buf + left, in, fill); /* Fill buffer */
|
|
blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
|
|
blake2b_compress(S, S->buf); /* Compress */
|
|
in += fill;
|
|
inlen -= fill;
|
|
while (inlen > BLAKE2B_BLOCKBYTES) {
|
|
blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
|
|
blake2b_compress(S, in);
|
|
in += BLAKE2B_BLOCKBYTES;
|
|
inlen -= BLAKE2B_BLOCKBYTES;
|
|
}
|
|
}
|
|
memcpy(S->buf + S->buflen, in, inlen);
|
|
S->buflen += inlen;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int blake2b_Final(blake2b_state *S, void *out, size_t outlen) {
|
|
uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
|
|
size_t i = 0;
|
|
|
|
if (out == NULL || outlen < S->outlen) return -1;
|
|
|
|
if (blake2b_is_lastblock(S)) return -1;
|
|
|
|
blake2b_increment_counter(S, S->buflen);
|
|
blake2b_set_lastblock(S);
|
|
memzero(S->buf + S->buflen, BLAKE2B_BLOCKBYTES - S->buflen); /* Padding */
|
|
blake2b_compress(S, S->buf);
|
|
|
|
for (i = 0; i < 8; ++i) /* Output full hash to temp buffer */
|
|
store64(buffer + sizeof(S->h[i]) * i, S->h[i]);
|
|
|
|
memcpy(out, buffer, S->outlen);
|
|
memzero(buffer, sizeof(buffer));
|
|
return 0;
|
|
}
|
|
|
|
int blake2b(const uint8_t *msg, uint32_t msg_len, void *out, size_t outlen) {
|
|
BLAKE2B_CTX ctx;
|
|
if (0 != blake2b_Init(&ctx, outlen)) return -1;
|
|
if (0 != blake2b_Update(&ctx, msg, msg_len)) return -1;
|
|
if (0 != blake2b_Final(&ctx, out, outlen)) return -1;
|
|
return 0;
|
|
}
|
|
|
|
int blake2b_Key(const uint8_t *msg, uint32_t msg_len, const void *key,
|
|
size_t keylen, void *out, size_t outlen) {
|
|
BLAKE2B_CTX ctx;
|
|
if (0 != blake2b_InitKey(&ctx, outlen, key, keylen)) return -1;
|
|
if (0 != blake2b_Update(&ctx, msg, msg_len)) return -1;
|
|
if (0 != blake2b_Final(&ctx, out, outlen)) return -1;
|
|
return 0;
|
|
}
|