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