155714Skris/* crypto/mdc2/mdc2dgst.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280297Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280297Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280297Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280297Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280297Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280297Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <stdlib.h> 6155714Skris#include <string.h> 62246772Sjkim#include <openssl/crypto.h> 6355714Skris#include <openssl/des.h> 6455714Skris#include <openssl/mdc2.h> 6555714Skris 6655714Skris#undef c2l 67280297Sjkim#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ 68280297Sjkim l|=((DES_LONG)(*((c)++)))<< 8L, \ 69280297Sjkim l|=((DES_LONG)(*((c)++)))<<16L, \ 70280297Sjkim l|=((DES_LONG)(*((c)++)))<<24L) 7155714Skris 7255714Skris#undef l2c 73280297Sjkim#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 74280297Sjkim *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 75280297Sjkim *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 76280297Sjkim *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 7755714Skris 78160814Ssimonstatic void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len); 79238405Sjkimfips_md_init(MDC2) 80280297Sjkim{ 81280297Sjkim c->num = 0; 82280297Sjkim c->pad_type = 1; 83280297Sjkim memset(&(c->h[0]), 0x52, MDC2_BLOCK); 84280297Sjkim memset(&(c->hh[0]), 0x25, MDC2_BLOCK); 85280297Sjkim return 1; 86280297Sjkim} 8755714Skris 88160814Ssimonint MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len) 89280297Sjkim{ 90280297Sjkim size_t i, j; 9155714Skris 92280297Sjkim i = c->num; 93280297Sjkim if (i != 0) { 94306195Sjkim if (len < MDC2_BLOCK - i) { 95280297Sjkim /* partial block */ 96280297Sjkim memcpy(&(c->data[i]), in, len); 97280297Sjkim c->num += (int)len; 98280297Sjkim return 1; 99280297Sjkim } else { 100280297Sjkim /* filled one */ 101280297Sjkim j = MDC2_BLOCK - i; 102280297Sjkim memcpy(&(c->data[i]), in, j); 103280297Sjkim len -= j; 104280297Sjkim in += j; 105280297Sjkim c->num = 0; 106280297Sjkim mdc2_body(c, &(c->data[0]), MDC2_BLOCK); 107280297Sjkim } 108280297Sjkim } 109280297Sjkim i = len & ~((size_t)MDC2_BLOCK - 1); 110280297Sjkim if (i > 0) 111280297Sjkim mdc2_body(c, in, i); 112280297Sjkim j = len - i; 113280297Sjkim if (j > 0) { 114280297Sjkim memcpy(&(c->data[0]), &(in[i]), j); 115280297Sjkim c->num = (int)j; 116280297Sjkim } 117280297Sjkim return 1; 118280297Sjkim} 11955714Skris 120160814Ssimonstatic void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len) 121280297Sjkim{ 122280297Sjkim register DES_LONG tin0, tin1; 123280297Sjkim register DES_LONG ttin0, ttin1; 124280297Sjkim DES_LONG d[2], dd[2]; 125280297Sjkim DES_key_schedule k; 126280297Sjkim unsigned char *p; 127280297Sjkim size_t i; 12855714Skris 129280297Sjkim for (i = 0; i < len; i += 8) { 130280297Sjkim c2l(in, tin0); 131280297Sjkim d[0] = dd[0] = tin0; 132280297Sjkim c2l(in, tin1); 133280297Sjkim d[1] = dd[1] = tin1; 134280297Sjkim c->h[0] = (c->h[0] & 0x9f) | 0x40; 135280297Sjkim c->hh[0] = (c->hh[0] & 0x9f) | 0x20; 13655714Skris 137280297Sjkim DES_set_odd_parity(&c->h); 138280297Sjkim DES_set_key_unchecked(&c->h, &k); 139280297Sjkim DES_encrypt1(d, &k, 1); 14055714Skris 141280297Sjkim DES_set_odd_parity(&c->hh); 142280297Sjkim DES_set_key_unchecked(&c->hh, &k); 143280297Sjkim DES_encrypt1(dd, &k, 1); 14455714Skris 145280297Sjkim ttin0 = tin0 ^ dd[0]; 146280297Sjkim ttin1 = tin1 ^ dd[1]; 147280297Sjkim tin0 ^= d[0]; 148280297Sjkim tin1 ^= d[1]; 14955714Skris 150280297Sjkim p = c->h; 151280297Sjkim l2c(tin0, p); 152280297Sjkim l2c(ttin1, p); 153280297Sjkim p = c->hh; 154280297Sjkim l2c(ttin0, p); 155280297Sjkim l2c(tin1, p); 156280297Sjkim } 157280297Sjkim} 15855714Skris 159109998Smarkmint MDC2_Final(unsigned char *md, MDC2_CTX *c) 160280297Sjkim{ 161280297Sjkim unsigned int i; 162280297Sjkim int j; 16355714Skris 164280297Sjkim i = c->num; 165280297Sjkim j = c->pad_type; 166280297Sjkim if ((i > 0) || (j == 2)) { 167280297Sjkim if (j == 2) 168280297Sjkim c->data[i++] = 0x80; 169280297Sjkim memset(&(c->data[i]), 0, MDC2_BLOCK - i); 170280297Sjkim mdc2_body(c, c->data, MDC2_BLOCK); 171280297Sjkim } 172280297Sjkim memcpy(md, (char *)c->h, MDC2_BLOCK); 173280297Sjkim memcpy(&(md[MDC2_BLOCK]), (char *)c->hh, MDC2_BLOCK); 174280297Sjkim return 1; 175280297Sjkim} 17655714Skris 17755714Skris#undef TEST 17855714Skris 17955714Skris#ifdef TEST 18055714Skrismain() 181280297Sjkim{ 182280297Sjkim unsigned char md[MDC2_DIGEST_LENGTH]; 183280297Sjkim int i; 184280297Sjkim MDC2_CTX c; 185280297Sjkim static char *text = "Now is the time for all "; 18655714Skris 187280297Sjkim MDC2_Init(&c); 188280297Sjkim MDC2_Update(&c, text, strlen(text)); 189280297Sjkim MDC2_Final(&(md[0]), &c); 19055714Skris 191280297Sjkim for (i = 0; i < MDC2_DIGEST_LENGTH; i++) 192280297Sjkim printf("%02X", md[i]); 193280297Sjkim printf("\n"); 194280297Sjkim} 19555714Skris 19655714Skris#endif 197