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1 /* crypto/mdc2/mdc2dgst.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/crypto.h> | |
63 #include <openssl/des.h> | |
64 #include <openssl/mdc2.h> | |
65 | |
66 #undef c2l | |
67 #define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ | |
68 l|=((DES_LONG)(*((c)++)))<< 8L, \ | |
69 l|=((DES_LONG)(*((c)++)))<<16L, \ | |
70 l|=((DES_LONG)(*((c)++)))<<24L) | |
71 | |
72 #undef l2c | |
73 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
74 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | |
75 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | |
76 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) | |
77 | |
78 static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len); | |
79 fips_md_init(MDC2) | |
80 { | |
81 c->num=0; | |
82 c->pad_type=1; | |
83 memset(&(c->h[0]),0x52,MDC2_BLOCK); | |
84 memset(&(c->hh[0]),0x25,MDC2_BLOCK); | |
85 return 1; | |
86 } | |
87 | |
88 int MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len) | |
89 { | |
90 size_t i,j; | |
91 | |
92 i=c->num; | |
93 if (i != 0) | |
94 { | |
95 if (i+len < MDC2_BLOCK) | |
96 { | |
97 /* partial block */ | |
98 memcpy(&(c->data[i]),in,len); | |
99 c->num+=(int)len; | |
100 return 1; | |
101 } | |
102 else | |
103 { | |
104 /* filled one */ | |
105 j=MDC2_BLOCK-i; | |
106 memcpy(&(c->data[i]),in,j); | |
107 len-=j; | |
108 in+=j; | |
109 c->num=0; | |
110 mdc2_body(c,&(c->data[0]),MDC2_BLOCK); | |
111 } | |
112 } | |
113 i=len&~((size_t)MDC2_BLOCK-1); | |
114 if (i > 0) mdc2_body(c,in,i); | |
115 j=len-i; | |
116 if (j > 0) | |
117 { | |
118 memcpy(&(c->data[0]),&(in[i]),j); | |
119 c->num=(int)j; | |
120 } | |
121 return 1; | |
122 } | |
123 | |
124 static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len) | |
125 { | |
126 register DES_LONG tin0,tin1; | |
127 register DES_LONG ttin0,ttin1; | |
128 DES_LONG d[2],dd[2]; | |
129 DES_key_schedule k; | |
130 unsigned char *p; | |
131 size_t i; | |
132 | |
133 for (i=0; i<len; i+=8) | |
134 { | |
135 c2l(in,tin0); d[0]=dd[0]=tin0; | |
136 c2l(in,tin1); d[1]=dd[1]=tin1; | |
137 c->h[0]=(c->h[0]&0x9f)|0x40; | |
138 c->hh[0]=(c->hh[0]&0x9f)|0x20; | |
139 | |
140 DES_set_odd_parity(&c->h); | |
141 DES_set_key_unchecked(&c->h,&k); | |
142 DES_encrypt1(d,&k,1); | |
143 | |
144 DES_set_odd_parity(&c->hh); | |
145 DES_set_key_unchecked(&c->hh,&k); | |
146 DES_encrypt1(dd,&k,1); | |
147 | |
148 ttin0=tin0^dd[0]; | |
149 ttin1=tin1^dd[1]; | |
150 tin0^=d[0]; | |
151 tin1^=d[1]; | |
152 | |
153 p=c->h; | |
154 l2c(tin0,p); | |
155 l2c(ttin1,p); | |
156 p=c->hh; | |
157 l2c(ttin0,p); | |
158 l2c(tin1,p); | |
159 } | |
160 } | |
161 | |
162 int MDC2_Final(unsigned char *md, MDC2_CTX *c) | |
163 { | |
164 unsigned int i; | |
165 int j; | |
166 | |
167 i=c->num; | |
168 j=c->pad_type; | |
169 if ((i > 0) || (j == 2)) | |
170 { | |
171 if (j == 2) | |
172 c->data[i++]=0x80; | |
173 memset(&(c->data[i]),0,MDC2_BLOCK-i); | |
174 mdc2_body(c,c->data,MDC2_BLOCK); | |
175 } | |
176 memcpy(md,(char *)c->h,MDC2_BLOCK); | |
177 memcpy(&(md[MDC2_BLOCK]),(char *)c->hh,MDC2_BLOCK); | |
178 return 1; | |
179 } | |
180 | |
181 #undef TEST | |
182 | |
183 #ifdef TEST | |
184 main() | |
185 { | |
186 unsigned char md[MDC2_DIGEST_LENGTH]; | |
187 int i; | |
188 MDC2_CTX c; | |
189 static char *text="Now is the time for all "; | |
190 | |
191 MDC2_Init(&c); | |
192 MDC2_Update(&c,text,strlen(text)); | |
193 MDC2_Final(&(md[0]),&c); | |
194 | |
195 for (i=0; i<MDC2_DIGEST_LENGTH; i++) | |
196 printf("%02X",md[i]); | |
197 printf("\n"); | |
198 } | |
199 | |
200 #endif | |
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