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 #include <openssl/crypto.h>
65
66 const char MD2_version[]="MD2" OPENSSL_VERSION_PTEXT;
67
68 /* Implemented from RFC1319 The MD2 Message-Digest Algorithm
69 */
70
71 #define UCHAR unsigned char
72
73 static void md2_block(MD2_CTX *c, const unsigned char *d);
74 /* The magic S table - I have converted it to hex since it is
75 * basically just 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,
109 };
110
111 const char *MD2_options(void)
112 {
113 if (sizeof(MD2_INT) == 1)
114 return("md2(char)");
115 else
116 return("md2(int)");
117 }
118
119 fips_md_init(MD2)
120 {
121 c->num=0;
122 memset(c->state,0,sizeof c->state);
123 memset(c->cksm,0,sizeof c->cksm);
124 memset(c->data,0,sizeof c->data);
125 return 1;
126 }
127
128 int MD2_Update(MD2_CTX *c, const unsigned char *data, size_t len)
129 {
130 register UCHAR *p;
131
132 if (len == 0) return 1;
133
134 p=c->data;
135 if (c->num != 0)
136 {
137 if ((c->num+len) >= MD2_BLOCK)
138 {
139 memcpy(&(p[c->num]),data,MD2_BLOCK-c->num);
140 md2_block(c,c->data);
141 data+=(MD2_BLOCK - c->num);
142 len-=(MD2_BLOCK - c->num);
143 c->num=0;
144 /* drop through and do the rest */
145 }
146 else
147 {
148 memcpy(&(p[c->num]),data,len);
149 /* data+=len; */
150 c->num+=(int)len;
151 return 1;
152 }
153 }
154 /* we now can process the input data in blocks of MD2_BLOCK
155 * chars and save the leftovers to c->data. */
156 while (len >= MD2_BLOCK)
157 {
158 md2_block(c,data);
159 data+=MD2_BLOCK;
160 len-=MD2_BLOCK;
161 }
162 memcpy(p,data,len);
163 c->num=(int)len;
164 return 1;
165 }
166
167 static void md2_block(MD2_CTX *c, const unsigned char *d)
168 {
169 register MD2_INT t,*sp1,*sp2;
170 register int i,j;
171 MD2_INT state[48];
172
173 sp1=c->state;
174 sp2=c->cksm;
175 j=sp2[MD2_BLOCK-1];
176 for (i=0; i<16; i++)
177 {
178 state[i]=sp1[i];
179 state[i+16]=t=d[i];
180 state[i+32]=(t^sp1[i]);
181 j=sp2[i]^=S[t^j];
182 }
183 t=0;
184 for (i=0; i<18; i++)
185 {
186 for (j=0; j<48; j+=8)
187 {
188 t= state[j+ 0]^=S[t];
189 t= state[j+ 1]^=S[t];
190 t= state[j+ 2]^=S[t];
191 t= state[j+ 3]^=S[t];
192 t= state[j+ 4]^=S[t];
193 t= state[j+ 5]^=S[t];
194 t= state[j+ 6]^=S[t];
195 t= state[j+ 7]^=S[t];
196 }
197 t=(t+i)&0xff;
198 }
199 memcpy(sp1,state,16*sizeof(MD2_INT));
200 OPENSSL_cleanse(state,48*sizeof(MD2_INT));
201 }
202
203 int MD2_Final(unsigned char *md, MD2_CTX *c)
204 {
205 int i,v;
206 register UCHAR *cp;
207 register MD2_INT *p1,*p2;
208
209 cp=c->data;
210 p1=c->state;
211 p2=c->cksm;
212 v=MD2_BLOCK-c->num;
213 for (i=c->num; i<MD2_BLOCK; i++)
214 cp[i]=(UCHAR)v;
215
216 md2_block(c,cp);
217
218 for (i=0; i<MD2_BLOCK; i++)
219 cp[i]=(UCHAR)p2[i];
220 md2_block(c,cp);
221
222 for (i=0; i<16; i++)
223 md[i]=(UCHAR)(p1[i]&0xff);
224 memset((char *)&c,0,sizeof(c));
225 return 1;
226 }