source: trunk/sys/libcrypto/others/md2/md2_dgst.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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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 "md2.h"
63#include "opensslv.h"
64#include "crypto.h"
65
66#ifdef OPENSSL_FIPS
67#include <openssl/fips.h>
68#endif
69
70#include "err.h"
71
72const char MD2_version[]="MD2" OPENSSL_VERSION_PTEXT;
73
74/* Implemented from RFC1319 The MD2 Message-Digest Algorithm
75 */
76
77#define UCHAR   unsigned char
78
79static void md2_block(MD2_CTX *c, const unsigned char *d);
80/* The magic S table - I have converted it to hex since it is
81 * basically just a random byte string. */
82static MD2_INT S[256]={
83        0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01,
84        0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13,
85        0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C,
86        0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA,
87        0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16,
88        0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12,
89        0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49,
90        0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A,
91        0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F,
92        0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21,
93        0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27,
94        0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03,
95        0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1,
96        0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6,
97        0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6,
98        0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1,
99        0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20,
100        0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02,
101        0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6,
102        0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F,
103        0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A,
104        0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26,
105        0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09,
106        0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52,
107        0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA,
108        0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A,
109        0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D,
110        0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39,
111        0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4,
112        0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,
113        0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A,
114        0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14,
115        };
116
117const char *MD2_options(void)
118        {
119        if (sizeof(MD2_INT) == 1)
120                return("md2(char)");
121        else
122                return("md2(int)");
123        }
124
125FIPS_NON_FIPS_MD_Init(MD2)
126        {
127        c->num=0;
128        memset(c->state,0,sizeof c->state);
129        memset(c->cksm,0,sizeof c->cksm);
130        memset(c->data,0,sizeof c->data);
131        return 1;
132        }
133
134int MD2_Update(MD2_CTX *c, const unsigned char *data, size_t len)
135        {
136        register UCHAR *p;
137
138        if (len == 0) return 1;
139
140        p=c->data;
141        if (c->num != 0)
142                {
143                if ((c->num+len) >= MD2_BLOCK)
144                        {
145                        memcpy(&(p[c->num]),data,MD2_BLOCK-c->num);
146                        md2_block(c,c->data);
147                        data+=(MD2_BLOCK - c->num);
148                        len-=(MD2_BLOCK - c->num);
149                        c->num=0;
150                        /* drop through and do the rest */
151                        }
152                else
153                        {
154                        memcpy(&(p[c->num]),data,len);
155                        /* data+=len; */
156                        c->num+=(int)len;
157                        return 1;
158                        }
159                }
160        /* we now can process the input data in blocks of MD2_BLOCK
161         * chars and save the leftovers to c->data. */
162        while (len >= MD2_BLOCK)
163                {
164                md2_block(c,data);
165                data+=MD2_BLOCK;
166                len-=MD2_BLOCK;
167                }
168        memcpy(p,data,len);
169        c->num=(int)len;
170        return 1;
171        }
172
173static void md2_block(MD2_CTX *c, const unsigned char *d)
174        {
175        register MD2_INT t,*sp1,*sp2;
176        register int i,j;
177        MD2_INT state[48];
178
179        sp1=c->state;
180        sp2=c->cksm;
181        j=sp2[MD2_BLOCK-1];
182        for (i=0; i<16; i++)
183                {
184                state[i]=sp1[i];
185                state[i+16]=t=d[i];
186                state[i+32]=(t^sp1[i]);
187                j=sp2[i]^=S[t^j];
188                }
189        t=0;
190        for (i=0; i<18; i++)
191                {
192                for (j=0; j<48; j+=8)
193                        {
194                        t= state[j+ 0]^=S[t];
195                        t= state[j+ 1]^=S[t];
196                        t= state[j+ 2]^=S[t];
197                        t= state[j+ 3]^=S[t];
198                        t= state[j+ 4]^=S[t];
199                        t= state[j+ 5]^=S[t];
200                        t= state[j+ 6]^=S[t];
201                        t= state[j+ 7]^=S[t];
202                        }
203                t=(t+i)&0xff;
204                }
205        memcpy(sp1,state,16*sizeof(MD2_INT));
206        OPENSSL_cleanse(state,48*sizeof(MD2_INT));
207        }
208
209int MD2_Final(unsigned char *md, MD2_CTX *c)
210        {
211        int i,v;
212        register UCHAR *cp;
213        register MD2_INT *p1,*p2;
214
215        cp=c->data;
216        p1=c->state;
217        p2=c->cksm;
218        v=MD2_BLOCK-c->num;
219        for (i=c->num; i<MD2_BLOCK; i++)
220                cp[i]=(UCHAR)v;
221
222        md2_block(c,cp);
223
224        for (i=0; i<MD2_BLOCK; i++)
225                cp[i]=(UCHAR)p2[i];
226        md2_block(c,cp);
227
228        for (i=0; i<16; i++)
229                md[i]=(UCHAR)(p1[i]&0xff);
230        memset((char *)&c,0,sizeof(c));
231        return 1;
232        }
233
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