1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
61 #include <openssl/crypto.h>
62 #include <openssl/des.h>
63 #include <openssl/mdc2.h>
66 #define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \
67 l|=((DES_LONG)(*((c)++)))<< 8L, \
68 l|=((DES_LONG)(*((c)++)))<<16L, \
69 l|=((DES_LONG)(*((c)++)))<<24L)
72 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
73 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
74 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
75 *((c)++)=(unsigned char)(((l)>>24L)&0xff))
77 static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len);
78 int MDC2_Init(MDC2_CTX *c)
82 memset(&(c->h[0]), 0x52, MDC2_BLOCK);
83 memset(&(c->hh[0]), 0x25, MDC2_BLOCK);
87 int MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len)
93 if (i + len < MDC2_BLOCK) {
95 memcpy(&(c->data[i]), in, len);
101 memcpy(&(c->data[i]), in, j);
105 mdc2_body(c, &(c->data[0]), MDC2_BLOCK);
108 i = len & ~((size_t)MDC2_BLOCK - 1);
113 memcpy(&(c->data[0]), &(in[i]), j);
119 static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len)
121 register DES_LONG tin0, tin1;
122 register DES_LONG ttin0, ttin1;
123 DES_LONG d[2], dd[2];
128 for (i = 0; i < len; i += 8) {
133 c->h[0] = (c->h[0] & 0x9f) | 0x40;
134 c->hh[0] = (c->hh[0] & 0x9f) | 0x20;
136 DES_set_odd_parity(&c->h);
137 DES_set_key_unchecked(&c->h, &k);
138 DES_encrypt1(d, &k, 1);
140 DES_set_odd_parity(&c->hh);
141 DES_set_key_unchecked(&c->hh, &k);
142 DES_encrypt1(dd, &k, 1);
144 ttin0 = tin0 ^ dd[0];
145 ttin1 = tin1 ^ dd[1];
158 int MDC2_Final(unsigned char *md, MDC2_CTX *c)
165 if ((i > 0) || (j == 2)) {
168 memset(&(c->data[i]), 0, MDC2_BLOCK - i);
169 mdc2_body(c, c->data, MDC2_BLOCK);
171 memcpy(md, (char *)c->h, MDC2_BLOCK);
172 memcpy(&(md[MDC2_BLOCK]), (char *)c->hh, MDC2_BLOCK);
181 unsigned char md[MDC2_DIGEST_LENGTH];
184 static char *text = "Now is the time for all ";
187 MDC2_Update(&c, text, strlen(text));
188 MDC2_Final(&(md[0]), &c);
190 for (i = 0; i < MDC2_DIGEST_LENGTH; i++)
191 printf("%02X", md[i]);