wolf SSL / wolfSSL

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

Dependents:   CyaSSL-Twitter-OAuth4Tw Example-client-tls-cert TwitterReader TweetTest ... more

wolfcrypt/src/md4.c@7:481bce714567, 2017-05-02 (annotated)

Committer:
wolfSSL
Date:
Tue May 02 08:44:47 2017 +0000
Revision:
7:481bce714567
wolfSSL3.10.2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 7:481bce714567 1 /* md4.c
wolfSSL 7:481bce714567 2 *
wolfSSL 7:481bce714567 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 7:481bce714567 4 *
wolfSSL 7:481bce714567 5 * This file is part of wolfSSL.
wolfSSL 7:481bce714567 6 *
wolfSSL 7:481bce714567 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 7:481bce714567 8 * it under the terms of the GNU General Public License as published by
wolfSSL 7:481bce714567 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 7:481bce714567 10 * (at your option) any later version.
wolfSSL 7:481bce714567 11 *
wolfSSL 7:481bce714567 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 7:481bce714567 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 7:481bce714567 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 7:481bce714567 15 * GNU General Public License for more details.
wolfSSL 7:481bce714567 16 *
wolfSSL 7:481bce714567 17 * You should have received a copy of the GNU General Public License
wolfSSL 7:481bce714567 18 * along with this program; if not, write to the Free Software
wolfSSL 7:481bce714567 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 7:481bce714567 20 */
wolfSSL 7:481bce714567 21
wolfSSL 7:481bce714567 22
wolfSSL 7:481bce714567 23 #ifdef HAVE_CONFIG_H
wolfSSL 7:481bce714567 24 #include <config.h>
wolfSSL 7:481bce714567 25 #endif
wolfSSL 7:481bce714567 26
wolfSSL 7:481bce714567 27 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 7:481bce714567 28
wolfSSL 7:481bce714567 29 #ifndef NO_MD4
wolfSSL 7:481bce714567 30
wolfSSL 7:481bce714567 31 #include <wolfssl/wolfcrypt/md4.h>
wolfSSL 7:481bce714567 32 #ifdef NO_INLINE
wolfSSL 7:481bce714567 33 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 7:481bce714567 34 #else
wolfSSL 7:481bce714567 35 #define WOLFSSL_MISC_INCLUDED
wolfSSL 7:481bce714567 36 #include <wolfcrypt/src/misc.c>
wolfSSL 7:481bce714567 37 #endif
wolfSSL 7:481bce714567 38
wolfSSL 7:481bce714567 39
wolfSSL 7:481bce714567 40 void wc_InitMd4(Md4* md4)
wolfSSL 7:481bce714567 41 {
wolfSSL 7:481bce714567 42 md4->digest[0] = 0x67452301L;
wolfSSL 7:481bce714567 43 md4->digest[1] = 0xefcdab89L;
wolfSSL 7:481bce714567 44 md4->digest[2] = 0x98badcfeL;
wolfSSL 7:481bce714567 45 md4->digest[3] = 0x10325476L;
wolfSSL 7:481bce714567 46
wolfSSL 7:481bce714567 47 md4->buffLen = 0;
wolfSSL 7:481bce714567 48 md4->loLen = 0;
wolfSSL 7:481bce714567 49 md4->hiLen = 0;
wolfSSL 7:481bce714567 50 }
wolfSSL 7:481bce714567 51
wolfSSL 7:481bce714567 52
wolfSSL 7:481bce714567 53 static void Transform(Md4* md4)
wolfSSL 7:481bce714567 54 {
wolfSSL 7:481bce714567 55 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
wolfSSL 7:481bce714567 56 #define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
wolfSSL 7:481bce714567 57 #define H(x, y, z) ((x) ^ (y) ^ (z))
wolfSSL 7:481bce714567 58
wolfSSL 7:481bce714567 59 /* Copy context->state[] to working vars */
wolfSSL 7:481bce714567 60 word32 A = md4->digest[0];
wolfSSL 7:481bce714567 61 word32 B = md4->digest[1];
wolfSSL 7:481bce714567 62 word32 C = md4->digest[2];
wolfSSL 7:481bce714567 63 word32 D = md4->digest[3];
wolfSSL 7:481bce714567 64
wolfSSL 7:481bce714567 65 #define function(a,b,c,d,k,s) a=rotlFixed(a+F(b,c,d)+md4->buffer[k],s);
wolfSSL 7:481bce714567 66 function(A,B,C,D, 0, 3);
wolfSSL 7:481bce714567 67 function(D,A,B,C, 1, 7);
wolfSSL 7:481bce714567 68 function(C,D,A,B, 2,11);
wolfSSL 7:481bce714567 69 function(B,C,D,A, 3,19);
wolfSSL 7:481bce714567 70 function(A,B,C,D, 4, 3);
wolfSSL 7:481bce714567 71 function(D,A,B,C, 5, 7);
wolfSSL 7:481bce714567 72 function(C,D,A,B, 6,11);
wolfSSL 7:481bce714567 73 function(B,C,D,A, 7,19);
wolfSSL 7:481bce714567 74 function(A,B,C,D, 8, 3);
wolfSSL 7:481bce714567 75 function(D,A,B,C, 9, 7);
wolfSSL 7:481bce714567 76 function(C,D,A,B,10,11);
wolfSSL 7:481bce714567 77 function(B,C,D,A,11,19);
wolfSSL 7:481bce714567 78 function(A,B,C,D,12, 3);
wolfSSL 7:481bce714567 79 function(D,A,B,C,13, 7);
wolfSSL 7:481bce714567 80 function(C,D,A,B,14,11);
wolfSSL 7:481bce714567 81 function(B,C,D,A,15,19);
wolfSSL 7:481bce714567 82
wolfSSL 7:481bce714567 83 #undef function
wolfSSL 7:481bce714567 84 #define function(a,b,c,d,k,s) \
wolfSSL 7:481bce714567 85 a=rotlFixed(a+G(b,c,d)+md4->buffer[k]+0x5a827999,s);
wolfSSL 7:481bce714567 86
wolfSSL 7:481bce714567 87 function(A,B,C,D, 0, 3);
wolfSSL 7:481bce714567 88 function(D,A,B,C, 4, 5);
wolfSSL 7:481bce714567 89 function(C,D,A,B, 8, 9);
wolfSSL 7:481bce714567 90 function(B,C,D,A,12,13);
wolfSSL 7:481bce714567 91 function(A,B,C,D, 1, 3);
wolfSSL 7:481bce714567 92 function(D,A,B,C, 5, 5);
wolfSSL 7:481bce714567 93 function(C,D,A,B, 9, 9);
wolfSSL 7:481bce714567 94 function(B,C,D,A,13,13);
wolfSSL 7:481bce714567 95 function(A,B,C,D, 2, 3);
wolfSSL 7:481bce714567 96 function(D,A,B,C, 6, 5);
wolfSSL 7:481bce714567 97 function(C,D,A,B,10, 9);
wolfSSL 7:481bce714567 98 function(B,C,D,A,14,13);
wolfSSL 7:481bce714567 99 function(A,B,C,D, 3, 3);
wolfSSL 7:481bce714567 100 function(D,A,B,C, 7, 5);
wolfSSL 7:481bce714567 101 function(C,D,A,B,11, 9);
wolfSSL 7:481bce714567 102 function(B,C,D,A,15,13);
wolfSSL 7:481bce714567 103
wolfSSL 7:481bce714567 104 #undef function
wolfSSL 7:481bce714567 105 #define function(a,b,c,d,k,s) \
wolfSSL 7:481bce714567 106 a=rotlFixed(a+H(b,c,d)+md4->buffer[k]+0x6ed9eba1,s);
wolfSSL 7:481bce714567 107
wolfSSL 7:481bce714567 108 function(A,B,C,D, 0, 3);
wolfSSL 7:481bce714567 109 function(D,A,B,C, 8, 9);
wolfSSL 7:481bce714567 110 function(C,D,A,B, 4,11);
wolfSSL 7:481bce714567 111 function(B,C,D,A,12,15);
wolfSSL 7:481bce714567 112 function(A,B,C,D, 2, 3);
wolfSSL 7:481bce714567 113 function(D,A,B,C,10, 9);
wolfSSL 7:481bce714567 114 function(C,D,A,B, 6,11);
wolfSSL 7:481bce714567 115 function(B,C,D,A,14,15);
wolfSSL 7:481bce714567 116 function(A,B,C,D, 1, 3);
wolfSSL 7:481bce714567 117 function(D,A,B,C, 9, 9);
wolfSSL 7:481bce714567 118 function(C,D,A,B, 5,11);
wolfSSL 7:481bce714567 119 function(B,C,D,A,13,15);
wolfSSL 7:481bce714567 120 function(A,B,C,D, 3, 3);
wolfSSL 7:481bce714567 121 function(D,A,B,C,11, 9);
wolfSSL 7:481bce714567 122 function(C,D,A,B, 7,11);
wolfSSL 7:481bce714567 123 function(B,C,D,A,15,15);
wolfSSL 7:481bce714567 124
wolfSSL 7:481bce714567 125 /* Add the working vars back into digest state[] */
wolfSSL 7:481bce714567 126 md4->digest[0] += A;
wolfSSL 7:481bce714567 127 md4->digest[1] += B;
wolfSSL 7:481bce714567 128 md4->digest[2] += C;
wolfSSL 7:481bce714567 129 md4->digest[3] += D;
wolfSSL 7:481bce714567 130 }
wolfSSL 7:481bce714567 131
wolfSSL 7:481bce714567 132
wolfSSL 7:481bce714567 133 static INLINE void AddLength(Md4* md4, word32 len)
wolfSSL 7:481bce714567 134 {
wolfSSL 7:481bce714567 135 word32 tmp = md4->loLen;
wolfSSL 7:481bce714567 136 if ( (md4->loLen += len) < tmp)
wolfSSL 7:481bce714567 137 md4->hiLen++; /* carry low to high */
wolfSSL 7:481bce714567 138 }
wolfSSL 7:481bce714567 139
wolfSSL 7:481bce714567 140
wolfSSL 7:481bce714567 141 void wc_Md4Update(Md4* md4, const byte* data, word32 len)
wolfSSL 7:481bce714567 142 {
wolfSSL 7:481bce714567 143 /* do block size increments */
wolfSSL 7:481bce714567 144 byte* local = (byte*)md4->buffer;
wolfSSL 7:481bce714567 145
wolfSSL 7:481bce714567 146 while (len) {
wolfSSL 7:481bce714567 147 word32 add = min(len, MD4_BLOCK_SIZE - md4->buffLen);
wolfSSL 7:481bce714567 148 XMEMCPY(&local[md4->buffLen], data, add);
wolfSSL 7:481bce714567 149
wolfSSL 7:481bce714567 150 md4->buffLen += add;
wolfSSL 7:481bce714567 151 data += add;
wolfSSL 7:481bce714567 152 len -= add;
wolfSSL 7:481bce714567 153
wolfSSL 7:481bce714567 154 if (md4->buffLen == MD4_BLOCK_SIZE) {
wolfSSL 7:481bce714567 155 #ifdef BIG_ENDIAN_ORDER
wolfSSL 7:481bce714567 156 ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
wolfSSL 7:481bce714567 157 #endif
wolfSSL 7:481bce714567 158 Transform(md4);
wolfSSL 7:481bce714567 159 AddLength(md4, MD4_BLOCK_SIZE);
wolfSSL 7:481bce714567 160 md4->buffLen = 0;
wolfSSL 7:481bce714567 161 }
wolfSSL 7:481bce714567 162 }
wolfSSL 7:481bce714567 163 }
wolfSSL 7:481bce714567 164
wolfSSL 7:481bce714567 165
wolfSSL 7:481bce714567 166 void wc_Md4Final(Md4* md4, byte* hash)
wolfSSL 7:481bce714567 167 {
wolfSSL 7:481bce714567 168 byte* local = (byte*)md4->buffer;
wolfSSL 7:481bce714567 169
wolfSSL 7:481bce714567 170 AddLength(md4, md4->buffLen); /* before adding pads */
wolfSSL 7:481bce714567 171
wolfSSL 7:481bce714567 172 local[md4->buffLen++] = 0x80; /* add 1 */
wolfSSL 7:481bce714567 173
wolfSSL 7:481bce714567 174 /* pad with zeros */
wolfSSL 7:481bce714567 175 if (md4->buffLen > MD4_PAD_SIZE) {
wolfSSL 7:481bce714567 176 XMEMSET(&local[md4->buffLen], 0, MD4_BLOCK_SIZE - md4->buffLen);
wolfSSL 7:481bce714567 177 md4->buffLen += MD4_BLOCK_SIZE - md4->buffLen;
wolfSSL 7:481bce714567 178
wolfSSL 7:481bce714567 179 #ifdef BIG_ENDIAN_ORDER
wolfSSL 7:481bce714567 180 ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
wolfSSL 7:481bce714567 181 #endif
wolfSSL 7:481bce714567 182 Transform(md4);
wolfSSL 7:481bce714567 183 md4->buffLen = 0;
wolfSSL 7:481bce714567 184 }
wolfSSL 7:481bce714567 185 XMEMSET(&local[md4->buffLen], 0, MD4_PAD_SIZE - md4->buffLen);
wolfSSL 7:481bce714567 186
wolfSSL 7:481bce714567 187 /* put lengths in bits */
wolfSSL 7:481bce714567 188 md4->hiLen = (md4->loLen >> (8*sizeof(md4->loLen) - 3)) +
wolfSSL 7:481bce714567 189 (md4->hiLen << 3);
wolfSSL 7:481bce714567 190 md4->loLen = md4->loLen << 3;
wolfSSL 7:481bce714567 191
wolfSSL 7:481bce714567 192 /* store lengths */
wolfSSL 7:481bce714567 193 #ifdef BIG_ENDIAN_ORDER
wolfSSL 7:481bce714567 194 ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
wolfSSL 7:481bce714567 195 #endif
wolfSSL 7:481bce714567 196 /* ! length ordering dependent on digest endian type ! */
wolfSSL 7:481bce714567 197 XMEMCPY(&local[MD4_PAD_SIZE], &md4->loLen, sizeof(word32));
wolfSSL 7:481bce714567 198 XMEMCPY(&local[MD4_PAD_SIZE + sizeof(word32)], &md4->hiLen, sizeof(word32));
wolfSSL 7:481bce714567 199
wolfSSL 7:481bce714567 200 Transform(md4);
wolfSSL 7:481bce714567 201 #ifdef BIG_ENDIAN_ORDER
wolfSSL 7:481bce714567 202 ByteReverseWords(md4->digest, md4->digest, MD4_DIGEST_SIZE);
wolfSSL 7:481bce714567 203 #endif
wolfSSL 7:481bce714567 204 XMEMCPY(hash, md4->digest, MD4_DIGEST_SIZE);
wolfSSL 7:481bce714567 205
wolfSSL 7:481bce714567 206 wc_InitMd4(md4); /* reset state */
wolfSSL 7:481bce714567 207 }
wolfSSL 7:481bce714567 208
wolfSSL 7:481bce714567 209
wolfSSL 7:481bce714567 210 #endif /* NO_MD4 */
wolfSSL 7:481bce714567 211
wolfSSL 7:481bce714567 212