wolf SSL / wolfSSL

wolfSSL SSL/TLS library, support up to TLS1.3

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wolfcrypt/src/blake2b.c@11:cee25a834751, 2017-05-30 (annotated)

Committer:
wolfSSL
Date:
Tue May 30 01:44:10 2017 +0000
Revision:
11:cee25a834751
wolfSSL 3.11.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 11:cee25a834751 1 /*
wolfSSL 11:cee25a834751 2 BLAKE2 reference source code package - reference C implementations
wolfSSL 11:cee25a834751 3
wolfSSL 11:cee25a834751 4 Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
wolfSSL 11:cee25a834751 5
wolfSSL 11:cee25a834751 6 To the extent possible under law, the author(s) have dedicated all copyright
wolfSSL 11:cee25a834751 7 and related and neighboring rights to this software to the public domain
wolfSSL 11:cee25a834751 8 worldwide. This software is distributed without any warranty.
wolfSSL 11:cee25a834751 9
wolfSSL 11:cee25a834751 10 You should have received a copy of the CC0 Public Domain Dedication along with
wolfSSL 11:cee25a834751 11 this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
wolfSSL 11:cee25a834751 12 */
wolfSSL 11:cee25a834751 13 /* blake2b.c
wolfSSL 11:cee25a834751 14 *
wolfSSL 11:cee25a834751 15 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 11:cee25a834751 16 *
wolfSSL 11:cee25a834751 17 * This file is part of wolfSSL.
wolfSSL 11:cee25a834751 18 *
wolfSSL 11:cee25a834751 19 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 11:cee25a834751 20 * it under the terms of the GNU General Public License as published by
wolfSSL 11:cee25a834751 21 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 11:cee25a834751 22 * (at your option) any later version.
wolfSSL 11:cee25a834751 23 *
wolfSSL 11:cee25a834751 24 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 11:cee25a834751 25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 11:cee25a834751 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 11:cee25a834751 27 * GNU General Public License for more details.
wolfSSL 11:cee25a834751 28 *
wolfSSL 11:cee25a834751 29 * You should have received a copy of the GNU General Public License
wolfSSL 11:cee25a834751 30 * along with this program; if not, write to the Free Software
wolfSSL 11:cee25a834751 31 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 11:cee25a834751 32 */
wolfSSL 11:cee25a834751 33
wolfSSL 11:cee25a834751 34
wolfSSL 11:cee25a834751 35
wolfSSL 11:cee25a834751 36 #ifdef HAVE_CONFIG_H
wolfSSL 11:cee25a834751 37 #include <config.h>
wolfSSL 11:cee25a834751 38 #endif
wolfSSL 11:cee25a834751 39
wolfSSL 11:cee25a834751 40 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 11:cee25a834751 41
wolfSSL 11:cee25a834751 42 #ifdef HAVE_BLAKE2
wolfSSL 11:cee25a834751 43
wolfSSL 11:cee25a834751 44 #include <wolfssl/wolfcrypt/blake2.h>
wolfSSL 11:cee25a834751 45 #include <wolfssl/wolfcrypt/blake2-impl.h>
wolfSSL 11:cee25a834751 46
wolfSSL 11:cee25a834751 47
wolfSSL 11:cee25a834751 48 static const word64 blake2b_IV[8] =
wolfSSL 11:cee25a834751 49 {
wolfSSL 11:cee25a834751 50 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
wolfSSL 11:cee25a834751 51 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
wolfSSL 11:cee25a834751 52 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
wolfSSL 11:cee25a834751 53 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
wolfSSL 11:cee25a834751 54 };
wolfSSL 11:cee25a834751 55
wolfSSL 11:cee25a834751 56 static const byte blake2b_sigma[12][16] =
wolfSSL 11:cee25a834751 57 {
wolfSSL 11:cee25a834751 58 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
wolfSSL 11:cee25a834751 59 { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
wolfSSL 11:cee25a834751 60 { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
wolfSSL 11:cee25a834751 61 { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
wolfSSL 11:cee25a834751 62 { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
wolfSSL 11:cee25a834751 63 { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
wolfSSL 11:cee25a834751 64 { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
wolfSSL 11:cee25a834751 65 { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
wolfSSL 11:cee25a834751 66 { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
wolfSSL 11:cee25a834751 67 { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
wolfSSL 11:cee25a834751 68 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
wolfSSL 11:cee25a834751 69 { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
wolfSSL 11:cee25a834751 70 };
wolfSSL 11:cee25a834751 71
wolfSSL 11:cee25a834751 72
wolfSSL 11:cee25a834751 73 static INLINE int blake2b_set_lastnode( blake2b_state *S )
wolfSSL 11:cee25a834751 74 {
wolfSSL 11:cee25a834751 75 S->f[1] = ~0ULL;
wolfSSL 11:cee25a834751 76 return 0;
wolfSSL 11:cee25a834751 77 }
wolfSSL 11:cee25a834751 78
wolfSSL 11:cee25a834751 79 /* Some helper functions, not necessarily useful */
wolfSSL 11:cee25a834751 80 static INLINE int blake2b_set_lastblock( blake2b_state *S )
wolfSSL 11:cee25a834751 81 {
wolfSSL 11:cee25a834751 82 if( S->last_node ) blake2b_set_lastnode( S );
wolfSSL 11:cee25a834751 83
wolfSSL 11:cee25a834751 84 S->f[0] = ~0ULL;
wolfSSL 11:cee25a834751 85 return 0;
wolfSSL 11:cee25a834751 86 }
wolfSSL 11:cee25a834751 87
wolfSSL 11:cee25a834751 88 static INLINE int blake2b_increment_counter( blake2b_state *S, const word64
wolfSSL 11:cee25a834751 89 inc )
wolfSSL 11:cee25a834751 90 {
wolfSSL 11:cee25a834751 91 S->t[0] += inc;
wolfSSL 11:cee25a834751 92 S->t[1] += ( S->t[0] < inc );
wolfSSL 11:cee25a834751 93 return 0;
wolfSSL 11:cee25a834751 94 }
wolfSSL 11:cee25a834751 95
wolfSSL 11:cee25a834751 96 static INLINE int blake2b_init0( blake2b_state *S )
wolfSSL 11:cee25a834751 97 {
wolfSSL 11:cee25a834751 98 int i;
wolfSSL 11:cee25a834751 99 XMEMSET( S, 0, sizeof( blake2b_state ) );
wolfSSL 11:cee25a834751 100
wolfSSL 11:cee25a834751 101 for( i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
wolfSSL 11:cee25a834751 102
wolfSSL 11:cee25a834751 103 return 0;
wolfSSL 11:cee25a834751 104 }
wolfSSL 11:cee25a834751 105
wolfSSL 11:cee25a834751 106 /* init xors IV with input parameter block */
wolfSSL 11:cee25a834751 107 int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
wolfSSL 11:cee25a834751 108 {
wolfSSL 11:cee25a834751 109 word32 i;
wolfSSL 11:cee25a834751 110 byte *p ;
wolfSSL 11:cee25a834751 111 blake2b_init0( S );
wolfSSL 11:cee25a834751 112 p = ( byte * )( P );
wolfSSL 11:cee25a834751 113
wolfSSL 11:cee25a834751 114 /* IV XOR ParamBlock */
wolfSSL 11:cee25a834751 115 for( i = 0; i < 8; ++i )
wolfSSL 11:cee25a834751 116 S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
wolfSSL 11:cee25a834751 117
wolfSSL 11:cee25a834751 118 return 0;
wolfSSL 11:cee25a834751 119 }
wolfSSL 11:cee25a834751 120
wolfSSL 11:cee25a834751 121
wolfSSL 11:cee25a834751 122
wolfSSL 11:cee25a834751 123 int blake2b_init( blake2b_state *S, const byte outlen )
wolfSSL 11:cee25a834751 124 {
wolfSSL 11:cee25a834751 125 blake2b_param P[1];
wolfSSL 11:cee25a834751 126
wolfSSL 11:cee25a834751 127 if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
wolfSSL 11:cee25a834751 128
wolfSSL 11:cee25a834751 129 P->digest_length = outlen;
wolfSSL 11:cee25a834751 130 P->key_length = 0;
wolfSSL 11:cee25a834751 131 P->fanout = 1;
wolfSSL 11:cee25a834751 132 P->depth = 1;
wolfSSL 11:cee25a834751 133 store32( &P->leaf_length, 0 );
wolfSSL 11:cee25a834751 134 store64( &P->node_offset, 0 );
wolfSSL 11:cee25a834751 135 P->node_depth = 0;
wolfSSL 11:cee25a834751 136 P->inner_length = 0;
wolfSSL 11:cee25a834751 137 XMEMSET( P->reserved, 0, sizeof( P->reserved ) );
wolfSSL 11:cee25a834751 138 XMEMSET( P->salt, 0, sizeof( P->salt ) );
wolfSSL 11:cee25a834751 139 XMEMSET( P->personal, 0, sizeof( P->personal ) );
wolfSSL 11:cee25a834751 140 return blake2b_init_param( S, P );
wolfSSL 11:cee25a834751 141 }
wolfSSL 11:cee25a834751 142
wolfSSL 11:cee25a834751 143
wolfSSL 11:cee25a834751 144 int blake2b_init_key( blake2b_state *S, const byte outlen, const void *key,
wolfSSL 11:cee25a834751 145 const byte keylen )
wolfSSL 11:cee25a834751 146 {
wolfSSL 11:cee25a834751 147 blake2b_param P[1];
wolfSSL 11:cee25a834751 148
wolfSSL 11:cee25a834751 149 if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
wolfSSL 11:cee25a834751 150
wolfSSL 11:cee25a834751 151 if ( !key || !keylen || keylen > BLAKE2B_KEYBYTES ) return -1;
wolfSSL 11:cee25a834751 152
wolfSSL 11:cee25a834751 153 P->digest_length = outlen;
wolfSSL 11:cee25a834751 154 P->key_length = keylen;
wolfSSL 11:cee25a834751 155 P->fanout = 1;
wolfSSL 11:cee25a834751 156 P->depth = 1;
wolfSSL 11:cee25a834751 157 store32( &P->leaf_length, 0 );
wolfSSL 11:cee25a834751 158 store64( &P->node_offset, 0 );
wolfSSL 11:cee25a834751 159 P->node_depth = 0;
wolfSSL 11:cee25a834751 160 P->inner_length = 0;
wolfSSL 11:cee25a834751 161 XMEMSET( P->reserved, 0, sizeof( P->reserved ) );
wolfSSL 11:cee25a834751 162 XMEMSET( P->salt, 0, sizeof( P->salt ) );
wolfSSL 11:cee25a834751 163 XMEMSET( P->personal, 0, sizeof( P->personal ) );
wolfSSL 11:cee25a834751 164
wolfSSL 11:cee25a834751 165 if( blake2b_init_param( S, P ) < 0 ) return -1;
wolfSSL 11:cee25a834751 166
wolfSSL 11:cee25a834751 167 {
wolfSSL 11:cee25a834751 168 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 169 byte* block;
wolfSSL 11:cee25a834751 170
wolfSSL 11:cee25a834751 171 block = (byte*)XMALLOC(BLAKE2B_BLOCKBYTES, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 172
wolfSSL 11:cee25a834751 173 if ( block == NULL ) return -1;
wolfSSL 11:cee25a834751 174 #else
wolfSSL 11:cee25a834751 175 byte block[BLAKE2B_BLOCKBYTES];
wolfSSL 11:cee25a834751 176 #endif
wolfSSL 11:cee25a834751 177
wolfSSL 11:cee25a834751 178 XMEMSET( block, 0, BLAKE2B_BLOCKBYTES );
wolfSSL 11:cee25a834751 179 XMEMCPY( block, key, keylen );
wolfSSL 11:cee25a834751 180 blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
wolfSSL 11:cee25a834751 181 secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from */
wolfSSL 11:cee25a834751 182 /* memory */
wolfSSL 11:cee25a834751 183
wolfSSL 11:cee25a834751 184 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 185 XFREE(block, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 186 #endif
wolfSSL 11:cee25a834751 187 }
wolfSSL 11:cee25a834751 188 return 0;
wolfSSL 11:cee25a834751 189 }
wolfSSL 11:cee25a834751 190
wolfSSL 11:cee25a834751 191 static int blake2b_compress( blake2b_state *S,
wolfSSL 11:cee25a834751 192 const byte block[BLAKE2B_BLOCKBYTES] )
wolfSSL 11:cee25a834751 193 {
wolfSSL 11:cee25a834751 194 int i;
wolfSSL 11:cee25a834751 195
wolfSSL 11:cee25a834751 196 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 197 word64* m;
wolfSSL 11:cee25a834751 198 word64* v;
wolfSSL 11:cee25a834751 199
wolfSSL 11:cee25a834751 200 m = (word64*)XMALLOC(sizeof(word64) * 16, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 201
wolfSSL 11:cee25a834751 202 if ( m == NULL ) return -1;
wolfSSL 11:cee25a834751 203
wolfSSL 11:cee25a834751 204 v = (word64*)XMALLOC(sizeof(word64) * 16, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 205
wolfSSL 11:cee25a834751 206 if ( v == NULL )
wolfSSL 11:cee25a834751 207 {
wolfSSL 11:cee25a834751 208 XFREE(m, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 209 return -1;
wolfSSL 11:cee25a834751 210 }
wolfSSL 11:cee25a834751 211 #else
wolfSSL 11:cee25a834751 212 word64 m[16];
wolfSSL 11:cee25a834751 213 word64 v[16];
wolfSSL 11:cee25a834751 214 #endif
wolfSSL 11:cee25a834751 215
wolfSSL 11:cee25a834751 216 for( i = 0; i < 16; ++i )
wolfSSL 11:cee25a834751 217 m[i] = load64( block + i * sizeof( m[i] ) );
wolfSSL 11:cee25a834751 218
wolfSSL 11:cee25a834751 219 for( i = 0; i < 8; ++i )
wolfSSL 11:cee25a834751 220 v[i] = S->h[i];
wolfSSL 11:cee25a834751 221
wolfSSL 11:cee25a834751 222 v[ 8] = blake2b_IV[0];
wolfSSL 11:cee25a834751 223 v[ 9] = blake2b_IV[1];
wolfSSL 11:cee25a834751 224 v[10] = blake2b_IV[2];
wolfSSL 11:cee25a834751 225 v[11] = blake2b_IV[3];
wolfSSL 11:cee25a834751 226 v[12] = S->t[0] ^ blake2b_IV[4];
wolfSSL 11:cee25a834751 227 v[13] = S->t[1] ^ blake2b_IV[5];
wolfSSL 11:cee25a834751 228 v[14] = S->f[0] ^ blake2b_IV[6];
wolfSSL 11:cee25a834751 229 v[15] = S->f[1] ^ blake2b_IV[7];
wolfSSL 11:cee25a834751 230 #define G(r,i,a,b,c,d) \
wolfSSL 11:cee25a834751 231 do { \
wolfSSL 11:cee25a834751 232 a = a + b + m[blake2b_sigma[r][2*i+0]]; \
wolfSSL 11:cee25a834751 233 d = rotr64(d ^ a, 32); \
wolfSSL 11:cee25a834751 234 c = c + d; \
wolfSSL 11:cee25a834751 235 b = rotr64(b ^ c, 24); \
wolfSSL 11:cee25a834751 236 a = a + b + m[blake2b_sigma[r][2*i+1]]; \
wolfSSL 11:cee25a834751 237 d = rotr64(d ^ a, 16); \
wolfSSL 11:cee25a834751 238 c = c + d; \
wolfSSL 11:cee25a834751 239 b = rotr64(b ^ c, 63); \
wolfSSL 11:cee25a834751 240 } while(0)
wolfSSL 11:cee25a834751 241 #define ROUND(r) \
wolfSSL 11:cee25a834751 242 do { \
wolfSSL 11:cee25a834751 243 G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
wolfSSL 11:cee25a834751 244 G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
wolfSSL 11:cee25a834751 245 G(r,2,v[ 2],v[ 6],v[10],v[14]); \
wolfSSL 11:cee25a834751 246 G(r,3,v[ 3],v[ 7],v[11],v[15]); \
wolfSSL 11:cee25a834751 247 G(r,4,v[ 0],v[ 5],v[10],v[15]); \
wolfSSL 11:cee25a834751 248 G(r,5,v[ 1],v[ 6],v[11],v[12]); \
wolfSSL 11:cee25a834751 249 G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
wolfSSL 11:cee25a834751 250 G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
wolfSSL 11:cee25a834751 251 } while(0)
wolfSSL 11:cee25a834751 252 ROUND( 0 );
wolfSSL 11:cee25a834751 253 ROUND( 1 );
wolfSSL 11:cee25a834751 254 ROUND( 2 );
wolfSSL 11:cee25a834751 255 ROUND( 3 );
wolfSSL 11:cee25a834751 256 ROUND( 4 );
wolfSSL 11:cee25a834751 257 ROUND( 5 );
wolfSSL 11:cee25a834751 258 ROUND( 6 );
wolfSSL 11:cee25a834751 259 ROUND( 7 );
wolfSSL 11:cee25a834751 260 ROUND( 8 );
wolfSSL 11:cee25a834751 261 ROUND( 9 );
wolfSSL 11:cee25a834751 262 ROUND( 10 );
wolfSSL 11:cee25a834751 263 ROUND( 11 );
wolfSSL 11:cee25a834751 264
wolfSSL 11:cee25a834751 265 for( i = 0; i < 8; ++i )
wolfSSL 11:cee25a834751 266 S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
wolfSSL 11:cee25a834751 267
wolfSSL 11:cee25a834751 268 #undef G
wolfSSL 11:cee25a834751 269 #undef ROUND
wolfSSL 11:cee25a834751 270
wolfSSL 11:cee25a834751 271 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 272 XFREE(m, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 273 XFREE(v, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 274 #endif
wolfSSL 11:cee25a834751 275
wolfSSL 11:cee25a834751 276 return 0;
wolfSSL 11:cee25a834751 277 }
wolfSSL 11:cee25a834751 278
wolfSSL 11:cee25a834751 279 /* inlen now in bytes */
wolfSSL 11:cee25a834751 280 int blake2b_update( blake2b_state *S, const byte *in, word64 inlen )
wolfSSL 11:cee25a834751 281 {
wolfSSL 11:cee25a834751 282 while( inlen > 0 )
wolfSSL 11:cee25a834751 283 {
wolfSSL 11:cee25a834751 284 word64 left = S->buflen;
wolfSSL 11:cee25a834751 285 word64 fill = 2 * BLAKE2B_BLOCKBYTES - left;
wolfSSL 11:cee25a834751 286
wolfSSL 11:cee25a834751 287 if( inlen > fill )
wolfSSL 11:cee25a834751 288 {
wolfSSL 11:cee25a834751 289 XMEMCPY( S->buf + left, in, (wolfssl_word)fill ); /* Fill buffer */
wolfSSL 11:cee25a834751 290 S->buflen += fill;
wolfSSL 11:cee25a834751 291 blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
wolfSSL 11:cee25a834751 292
wolfSSL 11:cee25a834751 293 if ( blake2b_compress( S, S->buf ) < 0 ) return -1; /* Compress */
wolfSSL 11:cee25a834751 294
wolfSSL 11:cee25a834751 295 XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES );
wolfSSL 11:cee25a834751 296 /* Shift buffer left */
wolfSSL 11:cee25a834751 297 S->buflen -= BLAKE2B_BLOCKBYTES;
wolfSSL 11:cee25a834751 298 in += fill;
wolfSSL 11:cee25a834751 299 inlen -= fill;
wolfSSL 11:cee25a834751 300 }
wolfSSL 11:cee25a834751 301 else /* inlen <= fill */
wolfSSL 11:cee25a834751 302 {
wolfSSL 11:cee25a834751 303 XMEMCPY( S->buf + left, in, (wolfssl_word)inlen );
wolfSSL 11:cee25a834751 304 S->buflen += inlen; /* Be lazy, do not compress */
wolfSSL 11:cee25a834751 305 in += inlen;
wolfSSL 11:cee25a834751 306 inlen -= inlen;
wolfSSL 11:cee25a834751 307 }
wolfSSL 11:cee25a834751 308 }
wolfSSL 11:cee25a834751 309
wolfSSL 11:cee25a834751 310 return 0;
wolfSSL 11:cee25a834751 311 }
wolfSSL 11:cee25a834751 312
wolfSSL 11:cee25a834751 313 /* Is this correct? */
wolfSSL 11:cee25a834751 314 int blake2b_final( blake2b_state *S, byte *out, byte outlen )
wolfSSL 11:cee25a834751 315 {
wolfSSL 11:cee25a834751 316 byte buffer[BLAKE2B_OUTBYTES];
wolfSSL 11:cee25a834751 317 int i;
wolfSSL 11:cee25a834751 318
wolfSSL 11:cee25a834751 319 if( S->buflen > BLAKE2B_BLOCKBYTES )
wolfSSL 11:cee25a834751 320 {
wolfSSL 11:cee25a834751 321 blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
wolfSSL 11:cee25a834751 322
wolfSSL 11:cee25a834751 323 if ( blake2b_compress( S, S->buf ) < 0 ) return -1;
wolfSSL 11:cee25a834751 324
wolfSSL 11:cee25a834751 325 S->buflen -= BLAKE2B_BLOCKBYTES;
wolfSSL 11:cee25a834751 326 XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );
wolfSSL 11:cee25a834751 327 }
wolfSSL 11:cee25a834751 328
wolfSSL 11:cee25a834751 329 blake2b_increment_counter( S, S->buflen );
wolfSSL 11:cee25a834751 330 blake2b_set_lastblock( S );
wolfSSL 11:cee25a834751 331 XMEMSET( S->buf + S->buflen, 0, (wolfssl_word)(2 * BLAKE2B_BLOCKBYTES - S->buflen) );
wolfSSL 11:cee25a834751 332 /* Padding */
wolfSSL 11:cee25a834751 333 if ( blake2b_compress( S, S->buf ) < 0 ) return -1;
wolfSSL 11:cee25a834751 334
wolfSSL 11:cee25a834751 335 for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
wolfSSL 11:cee25a834751 336 store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
wolfSSL 11:cee25a834751 337
wolfSSL 11:cee25a834751 338 XMEMCPY( out, buffer, outlen );
wolfSSL 11:cee25a834751 339 return 0;
wolfSSL 11:cee25a834751 340 }
wolfSSL 11:cee25a834751 341
wolfSSL 11:cee25a834751 342 /* inlen, at least, should be word64. Others can be size_t. */
wolfSSL 11:cee25a834751 343 int blake2b( byte *out, const void *in, const void *key, const byte outlen,
wolfSSL 11:cee25a834751 344 const word64 inlen, byte keylen )
wolfSSL 11:cee25a834751 345 {
wolfSSL 11:cee25a834751 346 blake2b_state S[1];
wolfSSL 11:cee25a834751 347
wolfSSL 11:cee25a834751 348 /* Verify parameters */
wolfSSL 11:cee25a834751 349 if ( NULL == in ) return -1;
wolfSSL 11:cee25a834751 350
wolfSSL 11:cee25a834751 351 if ( NULL == out ) return -1;
wolfSSL 11:cee25a834751 352
wolfSSL 11:cee25a834751 353 if( NULL == key ) keylen = 0;
wolfSSL 11:cee25a834751 354
wolfSSL 11:cee25a834751 355 if( keylen > 0 )
wolfSSL 11:cee25a834751 356 {
wolfSSL 11:cee25a834751 357 if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
wolfSSL 11:cee25a834751 358 }
wolfSSL 11:cee25a834751 359 else
wolfSSL 11:cee25a834751 360 {
wolfSSL 11:cee25a834751 361 if( blake2b_init( S, outlen ) < 0 ) return -1;
wolfSSL 11:cee25a834751 362 }
wolfSSL 11:cee25a834751 363
wolfSSL 11:cee25a834751 364 if ( blake2b_update( S, ( byte * )in, inlen ) < 0) return -1;
wolfSSL 11:cee25a834751 365
wolfSSL 11:cee25a834751 366 return blake2b_final( S, out, outlen );
wolfSSL 11:cee25a834751 367 }
wolfSSL 11:cee25a834751 368
wolfSSL 11:cee25a834751 369 #if defined(BLAKE2B_SELFTEST)
wolfSSL 11:cee25a834751 370 #include <string.h>
wolfSSL 11:cee25a834751 371 #include "blake2-kat.h"
wolfSSL 11:cee25a834751 372 int main( int argc, char **argv )
wolfSSL 11:cee25a834751 373 {
wolfSSL 11:cee25a834751 374 byte key[BLAKE2B_KEYBYTES];
wolfSSL 11:cee25a834751 375 byte buf[KAT_LENGTH];
wolfSSL 11:cee25a834751 376
wolfSSL 11:cee25a834751 377 for( word32 i = 0; i < BLAKE2B_KEYBYTES; ++i )
wolfSSL 11:cee25a834751 378 key[i] = ( byte )i;
wolfSSL 11:cee25a834751 379
wolfSSL 11:cee25a834751 380 for( word32 i = 0; i < KAT_LENGTH; ++i )
wolfSSL 11:cee25a834751 381 buf[i] = ( byte )i;
wolfSSL 11:cee25a834751 382
wolfSSL 11:cee25a834751 383 for( word32 i = 0; i < KAT_LENGTH; ++i )
wolfSSL 11:cee25a834751 384 {
wolfSSL 11:cee25a834751 385 byte hash[BLAKE2B_OUTBYTES];
wolfSSL 11:cee25a834751 386 if ( blake2b( hash, buf, key, BLAKE2B_OUTBYTES, i, BLAKE2B_KEYBYTES ) < 0 )
wolfSSL 11:cee25a834751 387 {
wolfSSL 11:cee25a834751 388 puts( "error" );
wolfSSL 11:cee25a834751 389 return -1;
wolfSSL 11:cee25a834751 390 }
wolfSSL 11:cee25a834751 391
wolfSSL 11:cee25a834751 392 if( 0 != XMEMCMP( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
wolfSSL 11:cee25a834751 393 {
wolfSSL 11:cee25a834751 394 puts( "error" );
wolfSSL 11:cee25a834751 395 return -1;
wolfSSL 11:cee25a834751 396 }
wolfSSL 11:cee25a834751 397 }
wolfSSL 11:cee25a834751 398
wolfSSL 11:cee25a834751 399 puts( "ok" );
wolfSSL 11:cee25a834751 400 return 0;
wolfSSL 11:cee25a834751 401 }
wolfSSL 11:cee25a834751 402 #endif
wolfSSL 11:cee25a834751 403
wolfSSL 11:cee25a834751 404
wolfSSL 11:cee25a834751 405 /* wolfCrypt API */
wolfSSL 11:cee25a834751 406
wolfSSL 11:cee25a834751 407 /* Init Blake2b digest, track size in case final doesn't want to "remember" */
wolfSSL 11:cee25a834751 408 int wc_InitBlake2b(Blake2b* b2b, word32 digestSz)
wolfSSL 11:cee25a834751 409 {
wolfSSL 11:cee25a834751 410 b2b->digestSz = digestSz;
wolfSSL 11:cee25a834751 411
wolfSSL 11:cee25a834751 412 return blake2b_init(b2b->S, (byte)digestSz);
wolfSSL 11:cee25a834751 413 }
wolfSSL 11:cee25a834751 414
wolfSSL 11:cee25a834751 415
wolfSSL 11:cee25a834751 416 /* Blake2b Update */
wolfSSL 11:cee25a834751 417 int wc_Blake2bUpdate(Blake2b* b2b, const byte* data, word32 sz)
wolfSSL 11:cee25a834751 418 {
wolfSSL 11:cee25a834751 419 return blake2b_update(b2b->S, data, sz);
wolfSSL 11:cee25a834751 420 }
wolfSSL 11:cee25a834751 421
wolfSSL 11:cee25a834751 422
wolfSSL 11:cee25a834751 423 /* Blake2b Final, if pass in zero size we use init digestSz */
wolfSSL 11:cee25a834751 424 int wc_Blake2bFinal(Blake2b* b2b, byte* final, word32 requestSz)
wolfSSL 11:cee25a834751 425 {
wolfSSL 11:cee25a834751 426 word32 sz = requestSz ? requestSz : b2b->digestSz;
wolfSSL 11:cee25a834751 427
wolfSSL 11:cee25a834751 428 return blake2b_final(b2b->S, final, (byte)sz);
wolfSSL 11:cee25a834751 429 }
wolfSSL 11:cee25a834751 430
wolfSSL 11:cee25a834751 431
wolfSSL 11:cee25a834751 432 /* end CTaoCrypt API */
wolfSSL 11:cee25a834751 433
wolfSSL 11:cee25a834751 434 #endif /* HAVE_BLAKE2 */
wolfSSL 11:cee25a834751 435
wolfSSL 11:cee25a834751 436