mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-23 07:58:09 +00:00
319 lines
9.0 KiB
C
319 lines
9.0 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 "blake2s.h"
|
|
#include "blake2_common.h"
|
|
#include "memzero.h"
|
|
|
|
typedef struct blake2s_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 */
|
|
uint16_t xof_length; /* 14 */
|
|
uint8_t node_depth; /* 15 */
|
|
uint8_t inner_length; /* 16 */
|
|
/* uint8_t reserved[0]; */
|
|
uint8_t salt[BLAKE2S_SALTBYTES]; /* 24 */
|
|
uint8_t personal[BLAKE2S_PERSONALBYTES]; /* 32 */
|
|
} __attribute__((packed)) blake2s_param;
|
|
|
|
static const uint32_t blake2s_IV[8] =
|
|
{
|
|
0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
|
|
0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
|
|
};
|
|
|
|
static const uint8_t blake2s_sigma[10][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 } ,
|
|
};
|
|
|
|
static void blake2s_set_lastnode( blake2s_state *S )
|
|
{
|
|
S->f[1] = (uint32_t)-1;
|
|
}
|
|
|
|
/* Some helper functions, not necessarily useful */
|
|
static int blake2s_is_lastblock( const blake2s_state *S )
|
|
{
|
|
return S->f[0] != 0;
|
|
}
|
|
|
|
static void blake2s_set_lastblock( blake2s_state *S )
|
|
{
|
|
if( S->last_node ) blake2s_set_lastnode( S );
|
|
|
|
S->f[0] = (uint32_t)-1;
|
|
}
|
|
|
|
static void blake2s_increment_counter( blake2s_state *S, const uint32_t inc )
|
|
{
|
|
S->t[0] += inc;
|
|
S->t[1] += ( S->t[0] < inc );
|
|
}
|
|
|
|
static void blake2s_init0( blake2s_state *S )
|
|
{
|
|
size_t i = 0;
|
|
memzero( S, sizeof( blake2s_state ) );
|
|
|
|
for( i = 0; i < 8; ++i ) S->h[i] = blake2s_IV[i];
|
|
}
|
|
|
|
/* init2 xors IV with input parameter block */
|
|
int blake2s_init_param( blake2s_state *S, const blake2s_param *P )
|
|
{
|
|
const unsigned char *p = ( const unsigned char * )( P );
|
|
size_t i = 0;
|
|
|
|
blake2s_init0( S );
|
|
|
|
/* IV XOR ParamBlock */
|
|
for( i = 0; i < 8; ++i )
|
|
S->h[i] ^= load32( &p[i * 4] );
|
|
|
|
S->outlen = P->digest_length;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Sequential blake2s initialization */
|
|
int blake2s_Init( blake2s_state *S, size_t outlen )
|
|
{
|
|
blake2s_param P[1] = {0};
|
|
|
|
if ( ( !outlen ) || ( outlen > BLAKE2S_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 );
|
|
store16( &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 blake2s_init_param( S, P );
|
|
}
|
|
|
|
int blake2s_InitPersonal( blake2s_state *S, size_t outlen, const void *personal, size_t personal_len)
|
|
{
|
|
blake2s_param P[1] = {0};
|
|
|
|
if ( ( !outlen ) || ( outlen > BLAKE2S_OUTBYTES ) ) return -1;
|
|
if ( ( !personal ) || ( personal_len != BLAKE2S_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 );
|
|
store16( &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, BLAKE2S_PERSONALBYTES );
|
|
return blake2s_init_param( S, P );
|
|
}
|
|
|
|
|
|
int blake2s_InitKey( blake2s_state *S, size_t outlen, const void *key, size_t keylen )
|
|
{
|
|
blake2s_param P[1] = {0};
|
|
|
|
if ( ( !outlen ) || ( outlen > BLAKE2S_OUTBYTES ) ) return -1;
|
|
|
|
if ( !key || !keylen || keylen > BLAKE2S_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 );
|
|
store16( &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( blake2s_init_param( S, P ) < 0 ) return -1;
|
|
|
|
{
|
|
uint8_t block[BLAKE2S_BLOCKBYTES] = {0};
|
|
memzero( block, BLAKE2S_BLOCKBYTES );
|
|
memcpy( block, key, keylen );
|
|
blake2s_Update( S, block, BLAKE2S_BLOCKBYTES );
|
|
memzero( block, BLAKE2S_BLOCKBYTES ); /* Burn the key from stack */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define G(r,i,a,b,c,d) \
|
|
do { \
|
|
a = a + b + m[blake2s_sigma[r][2*i+0]]; \
|
|
d = rotr32(d ^ a, 16); \
|
|
c = c + d; \
|
|
b = rotr32(b ^ c, 12); \
|
|
a = a + b + m[blake2s_sigma[r][2*i+1]]; \
|
|
d = rotr32(d ^ a, 8); \
|
|
c = c + d; \
|
|
b = rotr32(b ^ c, 7); \
|
|
} while(0)
|
|
|
|
#define ROUND(r) \
|
|
do { \
|
|
G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
|
|
G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
|
|
G(r,2,v[ 2],v[ 6],v[10],v[14]); \
|
|
G(r,3,v[ 3],v[ 7],v[11],v[15]); \
|
|
G(r,4,v[ 0],v[ 5],v[10],v[15]); \
|
|
G(r,5,v[ 1],v[ 6],v[11],v[12]); \
|
|
G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
|
|
G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
|
|
} while(0)
|
|
|
|
static void blake2s_compress( blake2s_state *S, const uint8_t in[BLAKE2S_BLOCKBYTES] )
|
|
{
|
|
uint32_t m[16] = {0};
|
|
uint32_t v[16] = {0};
|
|
size_t i = 0;
|
|
|
|
for( i = 0; i < 16; ++i ) {
|
|
m[i] = load32( in + i * sizeof( m[i] ) );
|
|
}
|
|
|
|
for( i = 0; i < 8; ++i ) {
|
|
v[i] = S->h[i];
|
|
}
|
|
|
|
v[ 8] = blake2s_IV[0];
|
|
v[ 9] = blake2s_IV[1];
|
|
v[10] = blake2s_IV[2];
|
|
v[11] = blake2s_IV[3];
|
|
v[12] = S->t[0] ^ blake2s_IV[4];
|
|
v[13] = S->t[1] ^ blake2s_IV[5];
|
|
v[14] = S->f[0] ^ blake2s_IV[6];
|
|
v[15] = S->f[1] ^ blake2s_IV[7];
|
|
|
|
ROUND( 0 );
|
|
ROUND( 1 );
|
|
ROUND( 2 );
|
|
ROUND( 3 );
|
|
ROUND( 4 );
|
|
ROUND( 5 );
|
|
ROUND( 6 );
|
|
ROUND( 7 );
|
|
ROUND( 8 );
|
|
ROUND( 9 );
|
|
|
|
for( i = 0; i < 8; ++i ) {
|
|
S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
|
|
}
|
|
}
|
|
|
|
#undef G
|
|
#undef ROUND
|
|
|
|
int blake2s_Update( blake2s_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 = BLAKE2S_BLOCKBYTES - left;
|
|
if( inlen > fill )
|
|
{
|
|
S->buflen = 0;
|
|
memcpy( S->buf + left, in, fill ); /* Fill buffer */
|
|
blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
|
|
blake2s_compress( S, S->buf ); /* Compress */
|
|
in += fill; inlen -= fill;
|
|
while(inlen > BLAKE2S_BLOCKBYTES) {
|
|
blake2s_increment_counter(S, BLAKE2S_BLOCKBYTES);
|
|
blake2s_compress( S, in );
|
|
in += BLAKE2S_BLOCKBYTES;
|
|
inlen -= BLAKE2S_BLOCKBYTES;
|
|
}
|
|
}
|
|
memcpy( S->buf + S->buflen, in, inlen );
|
|
S->buflen += inlen;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int blake2s_Final( blake2s_state *S, void *out, size_t outlen )
|
|
{
|
|
uint8_t buffer[BLAKE2S_OUTBYTES] = {0};
|
|
size_t i = 0;
|
|
|
|
if( out == NULL || outlen < S->outlen )
|
|
return -1;
|
|
|
|
if( blake2s_is_lastblock( S ) )
|
|
return -1;
|
|
|
|
blake2s_increment_counter( S, ( uint32_t )S->buflen );
|
|
blake2s_set_lastblock( S );
|
|
memzero( S->buf + S->buflen, BLAKE2S_BLOCKBYTES - S->buflen ); /* Padding */
|
|
blake2s_compress( S, S->buf );
|
|
|
|
for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
|
|
store32( buffer + sizeof( S->h[i] ) * i, S->h[i] );
|
|
|
|
memcpy( out, buffer, outlen );
|
|
memzero(buffer, sizeof(buffer));
|
|
return 0;
|
|
}
|
|
|
|
int blake2s(const uint8_t *msg, uint32_t msg_len, void *out, size_t outlen)
|
|
{
|
|
BLAKE2S_CTX ctx;
|
|
if (0 != blake2s_Init(&ctx, outlen)) return -1;
|
|
if (0 != blake2s_Update(&ctx, msg, msg_len)) return -1;
|
|
if (0 != blake2s_Final(&ctx, out, outlen)) return -1;
|
|
return 0;
|
|
}
|
|
|
|
int blake2s_Key(const uint8_t *msg, uint32_t msg_len, const void *key, size_t keylen, void *out, size_t outlen)
|
|
{
|
|
BLAKE2S_CTX ctx;
|
|
if (0 != blake2s_InitKey(&ctx, outlen, key, keylen)) return -1;
|
|
if (0 != blake2s_Update(&ctx, msg, msg_len)) return -1;
|
|
if (0 != blake2s_Final(&ctx, out, outlen)) return -1;
|
|
return 0;
|
|
}
|