[453] | 1 | /*
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| 2 | BLAKE2 reference source code package - reference C implementations
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| 3 |
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| 4 | Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
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| 5 |
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| 6 | To the extent possible under law, the author(s) have dedicated all copyright
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| 7 | and related and neighboring rights to this software to the public domain
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| 8 | worldwide. This software is distributed without any warranty.
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| 9 |
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| 10 | You should have received a copy of the CC0 Public Domain Dedication along with
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| 11 | this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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| 12 | */
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| 13 | /* blake2b.c
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| 14 | *
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| 15 | * Copyright (C) 2006-2020 wolfSSL Inc.
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| 16 | *
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| 17 | * This file is part of wolfSSL.
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| 18 | *
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| 19 | * wolfSSL is free software; you can redistribute it and/or modify
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| 20 | * it under the terms of the GNU General Public License as published by
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| 21 | * the Free Software Foundation; either version 2 of the License, or
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| 22 | * (at your option) any later version.
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| 23 | *
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| 24 | * wolfSSL is distributed in the hope that it will be useful,
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| 25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 27 | * GNU General Public License for more details.
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| 28 | *
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| 29 | * You should have received a copy of the GNU General Public License
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| 30 | * along with this program; if not, write to the Free Software
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| 31 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 32 | */
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| 33 |
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| 34 |
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| 35 |
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| 36 | #ifdef HAVE_CONFIG_H
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| 37 | #include <config.h>
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| 38 | #endif
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| 39 |
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| 40 | #include <wolfssl/wolfcrypt/settings.h>
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| 41 |
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| 42 | #ifdef HAVE_BLAKE2
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| 43 |
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| 44 | #include <wolfssl/wolfcrypt/blake2.h>
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| 45 | #include <wolfssl/wolfcrypt/blake2-impl.h>
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| 46 |
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| 47 |
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| 48 | static const word64 blake2b_IV[8] =
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| 49 | {
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| 50 | 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
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| 51 | 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
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| 52 | 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
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| 53 | 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
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| 54 | };
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| 55 |
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| 56 | static const byte blake2b_sigma[12][16] =
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| 57 | {
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| 58 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
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| 59 | { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
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| 60 | { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
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| 61 | { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
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| 62 | { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
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| 63 | { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
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| 64 | { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
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| 65 | { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
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| 66 | { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
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| 67 | { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
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| 68 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
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| 69 | { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
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| 70 | };
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| 71 |
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| 72 |
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| 73 | static WC_INLINE int blake2b_set_lastnode( blake2b_state *S )
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| 74 | {
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| 75 | S->f[1] = ~0ULL;
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| 76 | return 0;
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| 77 | }
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| 78 |
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| 79 | /* Some helper functions, not necessarily useful */
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| 80 | static WC_INLINE int blake2b_set_lastblock( blake2b_state *S )
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| 81 | {
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| 82 | if( S->last_node ) blake2b_set_lastnode( S );
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| 83 |
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| 84 | S->f[0] = ~0ULL;
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| 85 | return 0;
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| 86 | }
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| 87 |
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| 88 | static WC_INLINE int blake2b_increment_counter( blake2b_state *S, const word64
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| 89 | inc )
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| 90 | {
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| 91 | S->t[0] += inc;
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| 92 | S->t[1] += ( S->t[0] < inc );
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| 93 | return 0;
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| 94 | }
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| 95 |
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| 96 | static WC_INLINE int blake2b_init0( blake2b_state *S )
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| 97 | {
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| 98 | int i;
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| 99 | XMEMSET( S, 0, sizeof( blake2b_state ) );
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| 100 |
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| 101 | for( i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
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| 102 |
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| 103 | return 0;
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| 104 | }
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| 105 |
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| 106 | /* init xors IV with input parameter block */
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| 107 | int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
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| 108 | {
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| 109 | word32 i;
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| 110 | byte *p ;
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| 111 | blake2b_init0( S );
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| 112 | p = ( byte * )( P );
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| 113 |
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| 114 | /* IV XOR ParamBlock */
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| 115 | for( i = 0; i < 8; ++i )
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| 116 | S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
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| 117 |
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| 118 | return 0;
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| 119 | }
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| 120 |
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| 121 |
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| 122 |
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| 123 | int blake2b_init( blake2b_state *S, const byte outlen )
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| 124 | {
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| 125 | blake2b_param P[1];
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| 126 |
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| 127 | if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
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| 128 |
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| 129 | #ifdef WOLFSSL_BLAKE2B_INIT_EACH_FIELD
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| 130 | P->digest_length = outlen;
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| 131 | P->key_length = 0;
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| 132 | P->fanout = 1;
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| 133 | P->depth = 1;
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| 134 | store32( &P->leaf_length, 0 );
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| 135 | store64( &P->node_offset, 0 );
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| 136 | P->node_depth = 0;
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| 137 | P->inner_length = 0;
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| 138 | XMEMSET( P->reserved, 0, sizeof( P->reserved ) );
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| 139 | XMEMSET( P->salt, 0, sizeof( P->salt ) );
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| 140 | XMEMSET( P->personal, 0, sizeof( P->personal ) );
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| 141 | #else
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| 142 | XMEMSET( P, 0, sizeof( *P ) );
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| 143 | P->digest_length = outlen;
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| 144 | P->fanout = 1;
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| 145 | P->depth = 1;
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| 146 | #endif
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| 147 | return blake2b_init_param( S, P );
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| 148 | }
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| 149 |
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| 150 |
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| 151 | int blake2b_init_key( blake2b_state *S, const byte outlen, const void *key,
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| 152 | const byte keylen )
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| 153 | {
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| 154 | blake2b_param P[1];
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| 155 |
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| 156 | if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
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| 157 |
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| 158 | if ( !key || !keylen || keylen > BLAKE2B_KEYBYTES ) return -1;
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| 159 |
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| 160 | #ifdef WOLFSSL_BLAKE2B_INIT_EACH_FIELD
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| 161 | P->digest_length = outlen;
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| 162 | P->key_length = keylen;
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| 163 | P->fanout = 1;
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| 164 | P->depth = 1;
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| 165 | store32( &P->leaf_length, 0 );
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| 166 | store64( &P->node_offset, 0 );
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| 167 | P->node_depth = 0;
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| 168 | P->inner_length = 0;
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| 169 | XMEMSET( P->reserved, 0, sizeof( P->reserved ) );
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| 170 | XMEMSET( P->salt, 0, sizeof( P->salt ) );
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| 171 | XMEMSET( P->personal, 0, sizeof( P->personal ) );
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| 172 | #else
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| 173 | XMEMSET( P, 0, sizeof( *P ) );
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| 174 | P->digest_length = outlen;
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| 175 | P->key_length = keylen;
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| 176 | P->fanout = 1;
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| 177 | P->depth = 1;
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| 178 | #endif
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| 179 |
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| 180 | if( blake2b_init_param( S, P ) < 0 ) return -1;
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| 181 |
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| 182 | {
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| 183 | #ifdef WOLFSSL_SMALL_STACK
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| 184 | byte* block;
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| 185 |
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| 186 | block = (byte*)XMALLOC(BLAKE2B_BLOCKBYTES, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 187 |
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| 188 | if ( block == NULL ) return -1;
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| 189 | #else
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| 190 | byte block[BLAKE2B_BLOCKBYTES];
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| 191 | #endif
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| 192 |
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| 193 | XMEMSET( block, 0, BLAKE2B_BLOCKBYTES );
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| 194 | XMEMCPY( block, key, keylen );
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| 195 | blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
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| 196 | secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from */
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| 197 | /* memory */
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| 198 |
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| 199 | #ifdef WOLFSSL_SMALL_STACK
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| 200 | XFREE(block, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 201 | #endif
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| 202 | }
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| 203 | return 0;
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| 204 | }
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| 205 |
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| 206 | static int blake2b_compress( blake2b_state *S,
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| 207 | const byte block[BLAKE2B_BLOCKBYTES] )
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| 208 | {
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| 209 | int i;
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| 210 |
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| 211 | #ifdef WOLFSSL_SMALL_STACK
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| 212 | word64* m;
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| 213 | word64* v;
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| 214 |
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| 215 | m = (word64*)XMALLOC(sizeof(word64) * 16, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 216 |
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| 217 | if ( m == NULL ) return -1;
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| 218 |
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| 219 | v = (word64*)XMALLOC(sizeof(word64) * 16, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 220 |
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| 221 | if ( v == NULL )
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| 222 | {
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| 223 | XFREE(m, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 224 | return -1;
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| 225 | }
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| 226 | #else
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| 227 | word64 m[16];
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| 228 | word64 v[16];
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| 229 | #endif
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| 230 |
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| 231 | for( i = 0; i < 16; ++i )
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| 232 | m[i] = load64( block + i * sizeof( m[i] ) );
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| 233 |
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| 234 | for( i = 0; i < 8; ++i )
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| 235 | v[i] = S->h[i];
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| 236 |
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| 237 | v[ 8] = blake2b_IV[0];
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| 238 | v[ 9] = blake2b_IV[1];
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| 239 | v[10] = blake2b_IV[2];
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| 240 | v[11] = blake2b_IV[3];
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| 241 | v[12] = S->t[0] ^ blake2b_IV[4];
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| 242 | v[13] = S->t[1] ^ blake2b_IV[5];
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| 243 | v[14] = S->f[0] ^ blake2b_IV[6];
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| 244 | v[15] = S->f[1] ^ blake2b_IV[7];
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| 245 | #define G(r,i,a,b,c,d) \
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| 246 | do { \
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| 247 | a = a + b + m[blake2b_sigma[r][2*i+0]]; \
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| 248 | d = rotr64(d ^ a, 32); \
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| 249 | c = c + d; \
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| 250 | b = rotr64(b ^ c, 24); \
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| 251 | a = a + b + m[blake2b_sigma[r][2*i+1]]; \
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| 252 | d = rotr64(d ^ a, 16); \
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| 253 | c = c + d; \
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| 254 | b = rotr64(b ^ c, 63); \
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| 255 | } while(0)
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| 256 | #define ROUND(r) \
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| 257 | do { \
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| 258 | G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
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| 259 | G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
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| 260 | G(r,2,v[ 2],v[ 6],v[10],v[14]); \
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| 261 | G(r,3,v[ 3],v[ 7],v[11],v[15]); \
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| 262 | G(r,4,v[ 0],v[ 5],v[10],v[15]); \
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| 263 | G(r,5,v[ 1],v[ 6],v[11],v[12]); \
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| 264 | G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
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| 265 | G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
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| 266 | } while(0)
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| 267 | ROUND( 0 );
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| 268 | ROUND( 1 );
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| 269 | ROUND( 2 );
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| 270 | ROUND( 3 );
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| 271 | ROUND( 4 );
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| 272 | ROUND( 5 );
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| 273 | ROUND( 6 );
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| 274 | ROUND( 7 );
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| 275 | ROUND( 8 );
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| 276 | ROUND( 9 );
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| 277 | ROUND( 10 );
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| 278 | ROUND( 11 );
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| 279 |
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| 280 | for( i = 0; i < 8; ++i )
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| 281 | S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
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| 282 |
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| 283 | #undef G
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| 284 | #undef ROUND
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| 285 |
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| 286 | #ifdef WOLFSSL_SMALL_STACK
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| 287 | XFREE(m, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 288 | XFREE(v, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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| 289 | #endif
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| 290 |
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| 291 | return 0;
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| 292 | }
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| 293 |
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| 294 | /* inlen now in bytes */
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| 295 | int blake2b_update( blake2b_state *S, const byte *in, word64 inlen )
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| 296 | {
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| 297 | while( inlen > 0 )
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| 298 | {
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| 299 | word64 left = S->buflen;
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| 300 | word64 fill = 2 * BLAKE2B_BLOCKBYTES - left;
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| 301 |
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| 302 | if( inlen > fill )
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| 303 | {
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| 304 | XMEMCPY( S->buf + left, in, (wolfssl_word)fill ); /* Fill buffer */
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| 305 | S->buflen += fill;
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| 306 | blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
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| 307 |
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| 308 | if ( blake2b_compress( S, S->buf ) < 0 ) return -1; /* Compress */
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| 309 |
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| 310 | XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES );
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| 311 | /* Shift buffer left */
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| 312 | S->buflen -= BLAKE2B_BLOCKBYTES;
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| 313 | in += fill;
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| 314 | inlen -= fill;
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| 315 | }
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| 316 | else /* inlen <= fill */
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| 317 | {
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| 318 | XMEMCPY( S->buf + left, in, (wolfssl_word)inlen );
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| 319 | S->buflen += inlen; /* Be lazy, do not compress */
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| 320 | inlen = 0;
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| 321 | }
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| 322 | }
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| 323 |
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| 324 | return 0;
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| 325 | }
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| 326 |
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| 327 | /* Is this correct? */
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| 328 | int blake2b_final( blake2b_state *S, byte *out, byte outlen )
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| 329 | {
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| 330 | byte buffer[BLAKE2B_OUTBYTES];
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| 331 | int i;
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| 332 |
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| 333 | if( S->buflen > BLAKE2B_BLOCKBYTES )
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| 334 | {
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| 335 | blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
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| 336 |
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| 337 | if ( blake2b_compress( S, S->buf ) < 0 ) return -1;
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| 338 |
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| 339 | S->buflen -= BLAKE2B_BLOCKBYTES;
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| 340 | XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );
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| 341 | }
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| 342 |
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| 343 | blake2b_increment_counter( S, S->buflen );
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| 344 | blake2b_set_lastblock( S );
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| 345 | XMEMSET( S->buf + S->buflen, 0, (wolfssl_word)(2 * BLAKE2B_BLOCKBYTES - S->buflen) );
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| 346 | /* Padding */
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| 347 | if ( blake2b_compress( S, S->buf ) < 0 ) return -1;
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| 348 |
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| 349 | for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
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| 350 | store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
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| 351 |
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| 352 | XMEMCPY( out, buffer, outlen );
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| 353 | return 0;
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| 354 | }
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| 355 |
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| 356 | /* inlen, at least, should be word64. Others can be size_t. */
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| 357 | int blake2b( byte *out, const void *in, const void *key, const byte outlen,
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| 358 | const word64 inlen, byte keylen )
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| 359 | {
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| 360 | blake2b_state S[1];
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| 361 |
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| 362 | /* Verify parameters */
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| 363 | if ( NULL == in ) return -1;
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| 364 |
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| 365 | if ( NULL == out ) return -1;
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| 366 |
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| 367 | if( NULL == key ) keylen = 0;
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| 368 |
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| 369 | if( keylen > 0 )
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| 370 | {
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| 371 | if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
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| 372 | }
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| 373 | else
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| 374 | {
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| 375 | if( blake2b_init( S, outlen ) < 0 ) return -1;
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| 376 | }
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| 377 |
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| 378 | if ( blake2b_update( S, ( byte * )in, inlen ) < 0) return -1;
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| 379 |
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| 380 | return blake2b_final( S, out, outlen );
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| 381 | }
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| 382 |
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| 383 | #if defined(BLAKE2B_SELFTEST)
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| 384 | #include <string.h>
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| 385 | #include "blake2-kat.h"
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| 386 | int main( int argc, char **argv )
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| 387 | {
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| 388 | byte key[BLAKE2B_KEYBYTES];
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| 389 | byte buf[KAT_LENGTH];
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| 390 |
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| 391 | for( word32 i = 0; i < BLAKE2B_KEYBYTES; ++i )
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| 392 | key[i] = ( byte )i;
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| 393 |
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| 394 | for( word32 i = 0; i < KAT_LENGTH; ++i )
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| 395 | buf[i] = ( byte )i;
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| 396 |
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| 397 | for( word32 i = 0; i < KAT_LENGTH; ++i )
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| 398 | {
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| 399 | byte hash[BLAKE2B_OUTBYTES];
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| 400 | if ( blake2b( hash, buf, key, BLAKE2B_OUTBYTES, i, BLAKE2B_KEYBYTES ) < 0 )
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| 401 | {
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| 402 | puts( "error" );
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| 403 | return -1;
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| 404 | }
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| 405 |
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| 406 | if( 0 != XMEMCMP( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
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| 407 | {
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| 408 | puts( "error" );
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| 409 | return -1;
|
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| 410 | }
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| 411 | }
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| 412 |
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| 413 | puts( "ok" );
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| 414 | return 0;
|
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| 415 | }
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| 416 | #endif
|
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| 417 |
|
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| 418 |
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| 419 | /* wolfCrypt API */
|
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| 420 |
|
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| 421 | /* Init Blake2b digest, track size in case final doesn't want to "remember" */
|
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| 422 | int wc_InitBlake2b(Blake2b* b2b, word32 digestSz)
|
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| 423 | {
|
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| 424 | if (b2b == NULL){
|
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| 425 | return -1;
|
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| 426 | }
|
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| 427 | b2b->digestSz = digestSz;
|
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| 428 |
|
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| 429 | return blake2b_init(b2b->S, (byte)digestSz);
|
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| 430 | }
|
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| 431 |
|
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| 432 |
|
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| 433 | /* Blake2b Update */
|
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| 434 | int wc_Blake2bUpdate(Blake2b* b2b, const byte* data, word32 sz)
|
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| 435 | {
|
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| 436 | return blake2b_update(b2b->S, data, sz);
|
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| 437 | }
|
---|
| 438 |
|
---|
| 439 |
|
---|
| 440 | /* Blake2b Final, if pass in zero size we use init digestSz */
|
---|
| 441 | int wc_Blake2bFinal(Blake2b* b2b, byte* final, word32 requestSz)
|
---|
| 442 | {
|
---|
| 443 | word32 sz = requestSz ? requestSz : b2b->digestSz;
|
---|
| 444 |
|
---|
| 445 | return blake2b_final(b2b->S, final, (byte)sz);
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 |
|
---|
| 449 | /* end CTaoCrypt API */
|
---|
| 450 |
|
---|
| 451 | #endif /* HAVE_BLAKE2 */
|
---|
| 452 |
|
---|