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#include <openssl/fips.h> 66#include <openssl/err.h> 67 68const char *MD2_version="MD2" OPENSSL_VERSION_PTEXT; 69 70/* Implemented from RFC1319 The MD2 Message-Digest Algorithm 71 */ 72 73#define UCHAR unsigned char 74 75static void md2_block(MD2_CTX *c, const unsigned char *d); 76/* The magic S table - I have converted it to hex since it is 77 * basically just a random byte string. */ 78static MD2_INT S[256]={ 79 0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 80 0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, 81 0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C, 82 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA, 83 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16, 84 0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, 85 0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, 86 0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A, 87 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F, 88 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21, 89 0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, 90 0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, 91 0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1, 92 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6, 93 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6, 94 0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, 95 0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20, 96 0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02, 97 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6, 98 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F, 99 0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, 100 0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, 101 0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09, 102 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52, 103 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA, 104 0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, 105 0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, 106 0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39, 107 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4, 108 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A, 109 0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 110 0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14, 111 }; 112 113const char *MD2_options(void) 114 { 115 if (sizeof(MD2_INT) == 1) 116 return("md2(char)"); 117 else 118 return("md2(int)"); 119 } 120 121FIPS_NON_FIPS_MD_Init(MD2) 122 { 123 c->num=0; 124 memset(c->state,0,sizeof c->state); 125 memset(c->cksm,0,sizeof c->cksm); 126 memset(c->data,0,sizeof c->data); 127 return 1; 128 } 129 130int MD2_Update(MD2_CTX *c, const unsigned char *data, unsigned long len) 131 { 132 register UCHAR *p; 133 134 if (len == 0) return 1; 135 136 p=c->data; 137 if (c->num != 0) 138 { 139 if ((c->num+len) >= MD2_BLOCK) 140 { 141 memcpy(&(p[c->num]),data,MD2_BLOCK-c->num); 142 md2_block(c,c->data); 143 data+=(MD2_BLOCK - c->num); 144 len-=(MD2_BLOCK - c->num); 145 c->num=0; 146 /* drop through and do the rest */ 147 } 148 else 149 { 150 memcpy(&(p[c->num]),data,(int)len); 151 /* data+=len; */ 152 c->num+=(int)len; 153 return 1; 154 } 155 } 156 /* we now can process the input data in blocks of MD2_BLOCK 157 * chars and save the leftovers to c->data. */ 158 while (len >= MD2_BLOCK) 159 { 160 md2_block(c,data); 161 data+=MD2_BLOCK; 162 len-=MD2_BLOCK; 163 } 164 memcpy(p,data,(int)len); 165 c->num=(int)len; 166 return 1; 167 } 168 169static void md2_block(MD2_CTX *c, const unsigned char *d) 170 { 171 register MD2_INT t,*sp1,*sp2; 172 register int i,j; 173 MD2_INT state[48]; 174 175 sp1=c->state; 176 sp2=c->cksm; 177 j=sp2[MD2_BLOCK-1]; 178 for (i=0; i<16; i++) 179 { 180 state[i]=sp1[i]; 181 state[i+16]=t=d[i]; 182 state[i+32]=(t^sp1[i]); 183 j=sp2[i]^=S[t^j]; 184 } 185 t=0; 186 for (i=0; i<18; i++) 187 { 188 for (j=0; j<48; j+=8) 189 { 190 t= state[j+ 0]^=S[t]; 191 t= state[j+ 1]^=S[t]; 192 t= state[j+ 2]^=S[t]; 193 t= state[j+ 3]^=S[t]; 194 t= state[j+ 4]^=S[t]; 195 t= state[j+ 5]^=S[t]; 196 t= state[j+ 6]^=S[t]; 197 t= state[j+ 7]^=S[t]; 198 } 199 t=(t+i)&0xff; 200 } 201 memcpy(sp1,state,16*sizeof(MD2_INT)); 202 OPENSSL_cleanse(state,48*sizeof(MD2_INT)); 203 } 204 205int MD2_Final(unsigned char *md, MD2_CTX *c) 206 { 207 int i,v; 208 register UCHAR *cp; 209 register MD2_INT *p1,*p2; 210 211 cp=c->data; 212 p1=c->state; 213 p2=c->cksm; 214 v=MD2_BLOCK-c->num; 215 for (i=c->num; i<MD2_BLOCK; i++) 216 cp[i]=(UCHAR)v; 217 218 md2_block(c,cp); 219 220 for (i=0; i<MD2_BLOCK; i++) 221 cp[i]=(UCHAR)p2[i]; 222 md2_block(c,cp); 223 224 for (i=0; i<16; i++) 225 md[i]=(UCHAR)(p1[i]&0xff); 226 memset((char *)&c,0,sizeof(c)); 227 return 1; 228 } 229 230