forked from lthn/blockchain
06e7780df5
adds this to the bottom of whats there: // Copyright (c) 2017-2025 Lethean (https://lt.hn) // // Licensed under the European Union Public Licence (EUPL) version 1.2. // You may obtain a copy of the licence at: // // https://joinup.ec.europa.eu/software/page/eupl/licence-eupl // // The EUPL is a copyleft licence that is compatible with the MIT/X11 // licence used by the original projects; the MIT terms are therefore // considered “grandfathered” under the EUPL for this code. // // SPDX‑License‑Identifier: EUPL-1.2 //
381 lines
9.9 KiB
C
381 lines
9.9 KiB
C
// Copyright (c) 2014-2018 Zano Project
|
||
// Copyright (c) 2014-2018 The Louisdor Project
|
||
// Copyright (c) 2012-2013 The Boolberry developers
|
||
// Copyright (c) 2017-2025 Lethean (https://lt.hn)
|
||
//
|
||
// Licensed under the European Union Public Licence (EUPL) version 1.2.
|
||
// You may obtain a copy of the licence at:
|
||
//
|
||
// https://joinup.ec.europa.eu/software/page/eupl/licence-eupl
|
||
//
|
||
// The EUPL is a copyleft licence that is compatible with the MIT/X11
|
||
// licence used by the original projects; the MIT terms are therefore
|
||
// considered “grandfathered” under the EUPL for this code.
|
||
//
|
||
// SPDX‑License‑Identifier: EUPL-1.2
|
||
//
|
||
|
||
#include <stdint.h>
|
||
#include <string.h>
|
||
#include <stdio.h>
|
||
|
||
#include "blake2.h"
|
||
#include "blake2-impl.h"
|
||
|
||
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;
|
||
memset( S, 0, 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;
|
||
|
||
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;
|
||
}
|
||
|
||
|
||
|
||
int blake2b_init( blake2b_state *S, size_t outlen )
|
||
{
|
||
blake2b_param P[1];
|
||
|
||
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;
|
||
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_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen )
|
||
{
|
||
blake2b_param P[1];
|
||
|
||
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;
|
||
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 ) return -1;
|
||
|
||
{
|
||
uint8_t block[BLAKE2B_BLOCKBYTES];
|
||
memset( block, 0, BLAKE2B_BLOCKBYTES );
|
||
memcpy( block, key, keylen );
|
||
blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
|
||
secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from stack */
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#define G(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)
|
||
|
||
#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 blake2b_compress( blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES] )
|
||
{
|
||
uint64_t m[16];
|
||
uint64_t v[16];
|
||
size_t i;
|
||
|
||
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];
|
||
|
||
ROUND( 0 );
|
||
ROUND( 1 );
|
||
ROUND( 2 );
|
||
ROUND( 3 );
|
||
ROUND( 4 );
|
||
ROUND( 5 );
|
||
ROUND( 6 );
|
||
ROUND( 7 );
|
||
ROUND( 8 );
|
||
ROUND( 9 );
|
||
ROUND( 10 );
|
||
ROUND( 11 );
|
||
|
||
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;
|
||
|
||
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 );
|
||
memset( S->buf + S->buflen, 0, 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 );
|
||
secure_zero_memory(buffer, sizeof(buffer));
|
||
return 0;
|
||
}
|
||
|
||
/* inlen, at least, should be uint64_t. Others can be size_t. */
|
||
int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen )
|
||
{
|
||
blake2b_state S[1];
|
||
|
||
/* Verify parameters */
|
||
if ( NULL == in && inlen > 0 ) return -1;
|
||
|
||
if ( NULL == out ) return -1;
|
||
|
||
if( NULL == key && keylen > 0 ) return -1;
|
||
|
||
if( !outlen || outlen > BLAKE2B_OUTBYTES ) return -1;
|
||
|
||
if( keylen > BLAKE2B_KEYBYTES ) return -1;
|
||
|
||
if( keylen > 0 )
|
||
{
|
||
if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
|
||
}
|
||
else
|
||
{
|
||
if( blake2b_init( S, outlen ) < 0 ) return -1;
|
||
}
|
||
|
||
blake2b_update( S, ( const uint8_t * )in, inlen );
|
||
blake2b_final( S, out, outlen );
|
||
return 0;
|
||
}
|
||
|
||
int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ) {
|
||
return blake2b(out, outlen, in, inlen, key, keylen);
|
||
}
|
||
|
||
#if defined(SUPERCOP)
|
||
int crypto_hash( unsigned char *out, unsigned char *in, unsigned long long inlen )
|
||
{
|
||
return blake2b( out, BLAKE2B_OUTBYTES, in, inlen, NULL, 0 );
|
||
}
|
||
#endif
|
||
|
||
#if defined(BLAKE2B_SELFTEST)
|
||
#include <string.h>
|
||
#include "blake2-kat.h"
|
||
int main( void )
|
||
{
|
||
uint8_t key[BLAKE2B_KEYBYTES];
|
||
uint8_t buf[BLAKE2_KAT_LENGTH];
|
||
size_t i, step;
|
||
|
||
for( i = 0; i < BLAKE2B_KEYBYTES; ++i )
|
||
key[i] = ( uint8_t )i;
|
||
|
||
for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
|
||
buf[i] = ( uint8_t )i;
|
||
|
||
/* Test simple API */
|
||
for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
|
||
{
|
||
uint8_t hash[BLAKE2B_OUTBYTES];
|
||
blake2b( hash, BLAKE2B_OUTBYTES, buf, i, key, BLAKE2B_KEYBYTES );
|
||
|
||
if( 0 != memcmp( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
|
||
{
|
||
goto fail;
|
||
}
|
||
}
|
||
|
||
/* Test streaming API */
|
||
for(step = 1; step < BLAKE2B_BLOCKBYTES; ++step) {
|
||
for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
|
||
uint8_t hash[BLAKE2B_OUTBYTES];
|
||
blake2b_state S;
|
||
uint8_t * p = buf;
|
||
size_t mlen = i;
|
||
int err = 0;
|
||
|
||
if( (err = blake2b_init_key(&S, BLAKE2B_OUTBYTES, key, BLAKE2B_KEYBYTES)) < 0 ) {
|
||
goto fail;
|
||
}
|
||
|
||
while (mlen >= step) {
|
||
if ( (err = blake2b_update(&S, p, step)) < 0 ) {
|
||
goto fail;
|
||
}
|
||
mlen -= step;
|
||
p += step;
|
||
}
|
||
if ( (err = blake2b_update(&S, p, mlen)) < 0) {
|
||
goto fail;
|
||
}
|
||
if ( (err = blake2b_final(&S, hash, BLAKE2B_OUTBYTES)) < 0) {
|
||
goto fail;
|
||
}
|
||
|
||
if (0 != memcmp(hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES)) {
|
||
goto fail;
|
||
}
|
||
}
|
||
}
|
||
|
||
puts( "ok" );
|
||
return 0;
|
||
fail:
|
||
puts("error");
|
||
return -1;
|
||
}
|
||
#endif
|