2 BLAKE2 reference source code package - reference C implementations
4 Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
5 terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
6 your option. The terms of these licenses can be found at:
8 - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
9 - OpenSSL license : https://www.openssl.org/source/license.html
10 - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
12 More information about the BLAKE2 hash function can be found at
24 #include "archive_blake2.h"
25 #include "archive_blake2_impl.h"
27 #define PARALLELISM_DEGREE 8
30 blake2sp_init_param defaults to setting the expecting output length
31 from the digest_length parameter block field.
33 In some cases, however, we do not want this, as the output length
34 of these instances is given by inner_length instead.
36 static int blake2sp_init_leaf_param( blake2s_state *S, const blake2s_param *P )
38 int err = blake2s_init_param(S, P);
39 S->outlen = P->inner_length;
43 static int blake2sp_init_leaf( blake2s_state *S, size_t outlen, size_t keylen, uint32_t offset )
46 P->digest_length = (uint8_t)outlen;
47 P->key_length = (uint8_t)keylen;
48 P->fanout = PARALLELISM_DEGREE;
50 store32( &P->leaf_length, 0 );
51 store32( &P->node_offset, offset );
52 store16( &P->xof_length, 0 );
54 P->inner_length = BLAKE2S_OUTBYTES;
55 memset( P->salt, 0, sizeof( P->salt ) );
56 memset( P->personal, 0, sizeof( P->personal ) );
57 return blake2sp_init_leaf_param( S, P );
60 static int blake2sp_init_root( blake2s_state *S, size_t outlen, size_t keylen )
63 P->digest_length = (uint8_t)outlen;
64 P->key_length = (uint8_t)keylen;
65 P->fanout = PARALLELISM_DEGREE;
67 store32( &P->leaf_length, 0 );
68 store32( &P->node_offset, 0 );
69 store16( &P->xof_length, 0 );
71 P->inner_length = BLAKE2S_OUTBYTES;
72 memset( P->salt, 0, sizeof( P->salt ) );
73 memset( P->personal, 0, sizeof( P->personal ) );
74 return blake2s_init_param( S, P );
78 int blake2sp_init( blake2sp_state *S, size_t outlen )
82 if( !outlen || outlen > BLAKE2S_OUTBYTES ) return -1;
84 memset( S->buf, 0, sizeof( S->buf ) );
88 if( blake2sp_init_root( S->R, outlen, 0 ) < 0 )
91 for( i = 0; i < PARALLELISM_DEGREE; ++i )
92 if( blake2sp_init_leaf( S->S[i], outlen, 0, (uint32_t)i ) < 0 ) return -1;
95 S->S[PARALLELISM_DEGREE - 1]->last_node = 1;
99 int blake2sp_init_key( blake2sp_state *S, size_t outlen, const void *key, size_t keylen )
103 if( !outlen || outlen > BLAKE2S_OUTBYTES ) return -1;
105 if( !key || !keylen || keylen > BLAKE2S_KEYBYTES ) return -1;
107 memset( S->buf, 0, sizeof( S->buf ) );
111 if( blake2sp_init_root( S->R, outlen, keylen ) < 0 )
114 for( i = 0; i < PARALLELISM_DEGREE; ++i )
115 if( blake2sp_init_leaf( S->S[i], outlen, keylen, (uint32_t)i ) < 0 ) return -1;
118 S->S[PARALLELISM_DEGREE - 1]->last_node = 1;
120 uint8_t block[BLAKE2S_BLOCKBYTES];
121 memset( block, 0, BLAKE2S_BLOCKBYTES );
122 memcpy( block, key, keylen );
124 for( i = 0; i < PARALLELISM_DEGREE; ++i )
125 blake2s_update( S->S[i], block, BLAKE2S_BLOCKBYTES );
127 secure_zero_memory( block, BLAKE2S_BLOCKBYTES ); /* Burn the key from stack */
133 int blake2sp_update( blake2sp_state *S, const void *pin, size_t inlen )
135 const unsigned char * in = (const unsigned char *)pin;
136 size_t left = S->buflen;
137 size_t fill = sizeof( S->buf ) - left;
140 if( left && inlen >= fill )
142 memcpy( S->buf + left, in, fill );
144 for( i = 0; i < PARALLELISM_DEGREE; ++i )
145 blake2s_update( S->S[i], S->buf + i * BLAKE2S_BLOCKBYTES, BLAKE2S_BLOCKBYTES );
153 #pragma omp parallel shared(S), num_threads(PARALLELISM_DEGREE)
155 for( i = 0; i < PARALLELISM_DEGREE; ++i )
159 size_t i = omp_get_thread_num();
161 size_t inlen__ = inlen;
162 const unsigned char *in__ = ( const unsigned char * )in;
163 in__ += i * BLAKE2S_BLOCKBYTES;
165 while( inlen__ >= PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES )
167 blake2s_update( S->S[i], in__, BLAKE2S_BLOCKBYTES );
168 in__ += PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES;
169 inlen__ -= PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES;
173 in += inlen - inlen % ( PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES );
174 inlen %= PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES;
177 memcpy( S->buf + left, in, inlen );
179 S->buflen = left + inlen;
184 int blake2sp_final( blake2sp_state *S, void *out, size_t outlen )
186 uint8_t hash[PARALLELISM_DEGREE][BLAKE2S_OUTBYTES];
189 if(out == NULL || outlen < S->outlen) {
193 for( i = 0; i < PARALLELISM_DEGREE; ++i )
195 if( S->buflen > i * BLAKE2S_BLOCKBYTES )
197 size_t left = S->buflen - i * BLAKE2S_BLOCKBYTES;
199 if( left > BLAKE2S_BLOCKBYTES ) left = BLAKE2S_BLOCKBYTES;
201 blake2s_update( S->S[i], S->buf + i * BLAKE2S_BLOCKBYTES, left );
204 blake2s_final( S->S[i], hash[i], BLAKE2S_OUTBYTES );
207 for( i = 0; i < PARALLELISM_DEGREE; ++i )
208 blake2s_update( S->R, hash[i], BLAKE2S_OUTBYTES );
210 return blake2s_final( S->R, out, S->outlen );
214 int blake2sp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen )
216 uint8_t hash[PARALLELISM_DEGREE][BLAKE2S_OUTBYTES];
217 blake2s_state S[PARALLELISM_DEGREE][1];
221 /* Verify parameters */
222 if ( NULL == in && inlen > 0 ) return -1;
224 if ( NULL == out ) return -1;
226 if ( NULL == key && keylen > 0) return -1;
228 if( !outlen || outlen > BLAKE2S_OUTBYTES ) return -1;
230 if( keylen > BLAKE2S_KEYBYTES ) return -1;
232 for( i = 0; i < PARALLELISM_DEGREE; ++i )
233 if( blake2sp_init_leaf( S[i], outlen, keylen, (uint32_t)i ) < 0 ) return -1;
235 S[PARALLELISM_DEGREE - 1]->last_node = 1; /* mark last node */
239 uint8_t block[BLAKE2S_BLOCKBYTES];
240 memset( block, 0, BLAKE2S_BLOCKBYTES );
241 memcpy( block, key, keylen );
243 for( i = 0; i < PARALLELISM_DEGREE; ++i )
244 blake2s_update( S[i], block, BLAKE2S_BLOCKBYTES );
246 secure_zero_memory( block, BLAKE2S_BLOCKBYTES ); /* Burn the key from stack */
250 #pragma omp parallel shared(S,hash), num_threads(PARALLELISM_DEGREE)
253 for( i = 0; i < PARALLELISM_DEGREE; ++i )
257 size_t i = omp_get_thread_num();
259 size_t inlen__ = inlen;
260 const unsigned char *in__ = ( const unsigned char * )in;
261 in__ += i * BLAKE2S_BLOCKBYTES;
263 while( inlen__ >= PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES )
265 blake2s_update( S[i], in__, BLAKE2S_BLOCKBYTES );
266 in__ += PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES;
267 inlen__ -= PARALLELISM_DEGREE * BLAKE2S_BLOCKBYTES;
270 if( inlen__ > i * BLAKE2S_BLOCKBYTES )
272 const size_t left = inlen__ - i * BLAKE2S_BLOCKBYTES;
273 const size_t len = left <= BLAKE2S_BLOCKBYTES ? left : BLAKE2S_BLOCKBYTES;
274 blake2s_update( S[i], in__, len );
277 blake2s_final( S[i], hash[i], BLAKE2S_OUTBYTES );
280 if( blake2sp_init_root( FS, outlen, keylen ) < 0 )
285 for( i = 0; i < PARALLELISM_DEGREE; ++i )
286 blake2s_update( FS, hash[i], BLAKE2S_OUTBYTES );
288 return blake2s_final( FS, out, outlen );
293 #if defined(BLAKE2SP_SELFTEST)
295 #include "blake2-kat.h"
298 uint8_t key[BLAKE2S_KEYBYTES];
299 uint8_t buf[BLAKE2_KAT_LENGTH];
302 for( i = 0; i < BLAKE2S_KEYBYTES; ++i )
303 key[i] = ( uint8_t )i;
305 for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
306 buf[i] = ( uint8_t )i;
308 /* Test simple API */
309 for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
311 uint8_t hash[BLAKE2S_OUTBYTES];
312 blake2sp( hash, BLAKE2S_OUTBYTES, buf, i, key, BLAKE2S_KEYBYTES );
314 if( 0 != memcmp( hash, blake2sp_keyed_kat[i], BLAKE2S_OUTBYTES ) )
320 /* Test streaming API */
321 for(step = 1; step < BLAKE2S_BLOCKBYTES; ++step) {
322 for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
323 uint8_t hash[BLAKE2S_OUTBYTES];
329 if( (err = blake2sp_init_key(&S, BLAKE2S_OUTBYTES, key, BLAKE2S_KEYBYTES)) < 0 ) {
333 while (mlen >= step) {
334 if ( (err = blake2sp_update(&S, p, step)) < 0 ) {
340 if ( (err = blake2sp_update(&S, p, mlen)) < 0) {
343 if ( (err = blake2sp_final(&S, hash, BLAKE2S_OUTBYTES)) < 0) {
347 if (0 != memcmp(hash, blake2sp_keyed_kat[i], BLAKE2S_OUTBYTES)) {