AppleCSP/open_ssl/misc/md2_dgst.c

   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
  65 const char *MD2_version="MD2" OPENSSL_VERSION_PTEXT;
  66
  67 /* Implemented from RFC1319 The MD2 Message-Digest Algorithm
  68  */
  69
  70 #define UCHAR   unsigned char
  71
  72 static void md2_block(MD2_CTX *c, const unsigned char *d);
  73 /* The magic S table - I have converted it to hex since it is
  74  * basically just a random byte string. */
  75 static const MD2_INT S[256]={
  76         0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01,
  77         0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13,
  78         0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C,
  79         0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA,
  80         0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16,
  81         0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12,
  82         0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49,
  83         0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A,
  84         0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F,
  85         0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21,
  86         0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27,
  87         0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03,
  88         0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1,
  89         0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6,
  90         0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6,
  91         0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1,
  92         0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20,
  93         0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02,
  94         0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6,
  95         0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F,
  96         0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A,
  97         0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26,
  98         0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09,
  99         0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52,
 100         0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA,
 101         0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A,
 102         0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D,
 103         0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39,
 104         0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4,
 105         0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,
 106         0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A,
 107         0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14,
 108         };
 109
 110 const char *MD2_options(void)
 111         {
 112         if (sizeof(MD2_INT) == 1)
 113                 return("md2(char)");
 114         else
 115                 return("md2(int)");
 116         }
 117
 118 void MD2_Init(MD2_CTX *c)
 119         {
 120         c->num=0;
 121         memset(c->state,0,MD2_BLOCK*sizeof(MD2_INT));
 122         memset(c->cksm,0,MD2_BLOCK*sizeof(MD2_INT));
 123         memset(c->data,0,MD2_BLOCK);
 124         }
 125
 126 void MD2_Update(MD2_CTX *c, const unsigned char *data, unsigned long len)
 127         {
 128         register UCHAR *p;
 129
 130         if (len == 0) return;
 131
 132         p=c->data;
 133         if (c->num != 0)
 134                 {
 135                 if ((c->num+len) >= MD2_BLOCK)
 136                         {
 137                         memcpy(&(p[c->num]),data,MD2_BLOCK-c->num);
 138                         md2_block(c,c->data);
 139                         data+=(MD2_BLOCK - c->num);
 140                         len-=(MD2_BLOCK - c->num);
 141                         c->num=0;
 142                         /* drop through and do the rest */
 143                         }
 144                 else
 145                         {
 146                         memcpy(&(p[c->num]),data,(int)len);
 147                         /* data+=len; */
 148                         c->num+=(int)len;
 149                         return;
 150                         }
 151                 }
 152         /* we now can process the input data in blocks of MD2_BLOCK
 153          * chars and save the leftovers to c->data. */
 154         while (len >= MD2_BLOCK)
 155                 {
 156                 md2_block(c,data);
 157                 data+=MD2_BLOCK;
 158                 len-=MD2_BLOCK;
 159                 }
 160         memcpy(p,data,(int)len);
 161         c->num=(int)len;
 162         }
 163
 164 static void md2_block(MD2_CTX *c, const unsigned char *d)
 165         {
 166         register MD2_INT t,*sp1,*sp2;
 167         register int i,j;
 168         MD2_INT state[48];
 169
 170         sp1=c->state;
 171         sp2=c->cksm;
 172         j=sp2[MD2_BLOCK-1];
 173         for (i=0; i<16; i++)
 174                 {
 175                 state[i]=sp1[i];
 176                 state[i+16]=t=d[i];
 177                 state[i+32]=(t^sp1[i]);
 178                 j=sp2[i]^=S[t^j];
 179                 }
 180         t=0;
 181         for (i=0; i<18; i++)
 182                 {
 183                 for (j=0; j<48; j+=8)
 184                         {
 185                         t= state[j+ 0]^=S[t];
 186                         t= state[j+ 1]^=S[t];
 187                         t= state[j+ 2]^=S[t];
 188                         t= state[j+ 3]^=S[t];
 189                         t= state[j+ 4]^=S[t];
 190                         t= state[j+ 5]^=S[t];
 191                         t= state[j+ 6]^=S[t];
 192                         t= state[j+ 7]^=S[t];
 193                         }
 194                 t=(t+i)&0xff;
 195                 }
 196         memcpy(sp1,state,16*sizeof(MD2_INT));
 197         memset(state,0,48*sizeof(MD2_INT));
 198         }
 199
 200 void MD2_Final(unsigned char *md, MD2_CTX *c)
 201         {
 202         int i,v;
 203         register UCHAR *cp;
 204         register MD2_INT *p1,*p2;
 205
 206         cp=c->data;
 207         p1=c->state;
 208         p2=c->cksm;
 209         v=MD2_BLOCK-c->num;
 210         for (i=c->num; i<MD2_BLOCK; i++)
 211                 cp[i]=(UCHAR)v;
 212
 213         md2_block(c,cp);
 214
 215         for (i=0; i<MD2_BLOCK; i++)
 216                 cp[i]=(UCHAR)p2[i];
 217         md2_block(c,cp);
 218
 219         for (i=0; i<16; i++)
 220                 md[i]=(UCHAR)(p1[i]&0xff);
 221         memset((char *)&c,0,sizeof(c));
 222         }
 223