1/* crypto/md2/md2_dgst.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdio.h> 60#include <stdlib.h> 61#include <string.h> 62#include <openssl/md2.h> 63#include <openssl/opensslv.h> 64#include <openssl/crypto.h> 65#ifdef OPENSSL_FIPS 66#include <openssl/fips.h> 67#endif 68 69#include <openssl/err.h> 70 71const char MD2_version[]="MD2" OPENSSL_VERSION_PTEXT; 72 73/* Implemented from RFC1319 The MD2 Message-Digest Algorithm 74 */ 75 76#define UCHAR unsigned char 77 78static void md2_block(MD2_CTX *c, const unsigned char *d); 79/* The magic S table - I have converted it to hex since it is 80 * basically just a random byte string. */ 81static MD2_INT S[256]={ 82 0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 83 0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, 84 0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C, 85 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA, 86 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16, 87 0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, 88 0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, 89 0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A, 90 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F, 91 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21, 92 0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, 93 0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, 94 0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1, 95 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6, 96 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6, 97 0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, 98 0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20, 99 0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02, 100 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6, 101 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F, 102 0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, 103 0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, 104 0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09, 105 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52, 106 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA, 107 0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, 108 0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, 109 0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39, 110 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4, 111 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A, 112 0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 113 0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14, 114 }; 115 116const char *MD2_options(void) 117 { 118 if (sizeof(MD2_INT) == 1) 119 return("md2(char)"); 120 else 121 return("md2(int)"); 122 } 123 124FIPS_NON_FIPS_MD_Init(MD2) 125 { 126 c->num=0; 127 memset(c->state,0,sizeof c->state); 128 memset(c->cksm,0,sizeof c->cksm); 129 memset(c->data,0,sizeof c->data); 130 return 1; 131 } 132 133int MD2_Update(MD2_CTX *c, const unsigned char *data, size_t len) 134 { 135 register UCHAR *p; 136 137 if (len == 0) return 1; 138 139 p=c->data; 140 if (c->num != 0) 141 { 142 if ((c->num+len) >= MD2_BLOCK) 143 { 144 memcpy(&(p[c->num]),data,MD2_BLOCK-c->num); 145 md2_block(c,c->data); 146 data+=(MD2_BLOCK - c->num); 147 len-=(MD2_BLOCK - c->num); 148 c->num=0; 149 /* drop through and do the rest */ 150 } 151 else 152 { 153 memcpy(&(p[c->num]),data,len); 154 /* data+=len; */ 155 c->num+=(int)len; 156 return 1; 157 } 158 } 159 /* we now can process the input data in blocks of MD2_BLOCK 160 * chars and save the leftovers to c->data. */ 161 while (len >= MD2_BLOCK) 162 { 163 md2_block(c,data); 164 data+=MD2_BLOCK; 165 len-=MD2_BLOCK; 166 } 167 memcpy(p,data,len); 168 c->num=(int)len; 169 return 1; 170 } 171 172static void md2_block(MD2_CTX *c, const unsigned char *d) 173 { 174 register MD2_INT t,*sp1,*sp2; 175 register int i,j; 176 MD2_INT state[48]; 177 178 sp1=c->state; 179 sp2=c->cksm; 180 j=sp2[MD2_BLOCK-1]; 181 for (i=0; i<16; i++) 182 { 183 state[i]=sp1[i]; 184 state[i+16]=t=d[i]; 185 state[i+32]=(t^sp1[i]); 186 j=sp2[i]^=S[t^j]; 187 } 188 t=0; 189 for (i=0; i<18; i++) 190 { 191 for (j=0; j<48; j+=8) 192 { 193 t= state[j+ 0]^=S[t]; 194 t= state[j+ 1]^=S[t]; 195 t= state[j+ 2]^=S[t]; 196 t= state[j+ 3]^=S[t]; 197 t= state[j+ 4]^=S[t]; 198 t= state[j+ 5]^=S[t]; 199 t= state[j+ 6]^=S[t]; 200 t= state[j+ 7]^=S[t]; 201 } 202 t=(t+i)&0xff; 203 } 204 memcpy(sp1,state,16*sizeof(MD2_INT)); 205 OPENSSL_cleanse(state,48*sizeof(MD2_INT)); 206 } 207 208int MD2_Final(unsigned char *md, MD2_CTX *c) 209 { 210 int i,v; 211 register UCHAR *cp; 212 register MD2_INT *p1,*p2; 213 214 cp=c->data; 215 p1=c->state; 216 p2=c->cksm; 217 v=MD2_BLOCK-c->num; 218 for (i=c->num; i<MD2_BLOCK; i++) 219 cp[i]=(UCHAR)v; 220 221 md2_block(c,cp); 222 223 for (i=0; i<MD2_BLOCK; i++) 224 cp[i]=(UCHAR)p2[i]; 225 md2_block(c,cp); 226 227 for (i=0; i<16; i++) 228 md[i]=(UCHAR)(p1[i]&0xff); 229 memset((char *)&c,0,sizeof(c)); 230 return 1; 231 } 232 233