2 * Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #define A m->counter[0]
40 #define B m->counter[1]
41 #define C m->counter[2]
42 #define D m->counter[3]
46 MD5_Init (struct md5
*m
)
56 #define F(x,y,z) CRAYFIX((x & y) | (~x & z))
57 #define G(x,y,z) CRAYFIX((x & z) | (y & ~z))
58 #define H(x,y,z) (x ^ y ^ z)
59 #define I(x,y,z) CRAYFIX(y ^ (x | ~z))
61 #define DOIT(a,b,c,d,k,s,i,OP) \
62 a = b + cshift(a + OP(b,c,d) + X[k] + (i), s)
64 #define DO1(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,F)
65 #define DO2(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,G)
66 #define DO3(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,H)
67 #define DO4(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,I)
70 calc (struct md5
*m
, uint32_t *data
)
72 uint32_t AA
, BB
, CC
, DD
;
81 DO1(A
,B
,C
,D
,0,7,0xd76aa478);
82 DO1(D
,A
,B
,C
,1,12,0xe8c7b756);
83 DO1(C
,D
,A
,B
,2,17,0x242070db);
84 DO1(B
,C
,D
,A
,3,22,0xc1bdceee);
86 DO1(A
,B
,C
,D
,4,7,0xf57c0faf);
87 DO1(D
,A
,B
,C
,5,12,0x4787c62a);
88 DO1(C
,D
,A
,B
,6,17,0xa8304613);
89 DO1(B
,C
,D
,A
,7,22,0xfd469501);
91 DO1(A
,B
,C
,D
,8,7,0x698098d8);
92 DO1(D
,A
,B
,C
,9,12,0x8b44f7af);
93 DO1(C
,D
,A
,B
,10,17,0xffff5bb1);
94 DO1(B
,C
,D
,A
,11,22,0x895cd7be);
96 DO1(A
,B
,C
,D
,12,7,0x6b901122);
97 DO1(D
,A
,B
,C
,13,12,0xfd987193);
98 DO1(C
,D
,A
,B
,14,17,0xa679438e);
99 DO1(B
,C
,D
,A
,15,22,0x49b40821);
103 DO2(A
,B
,C
,D
,1,5,0xf61e2562);
104 DO2(D
,A
,B
,C
,6,9,0xc040b340);
105 DO2(C
,D
,A
,B
,11,14,0x265e5a51);
106 DO2(B
,C
,D
,A
,0,20,0xe9b6c7aa);
108 DO2(A
,B
,C
,D
,5,5,0xd62f105d);
109 DO2(D
,A
,B
,C
,10,9,0x2441453);
110 DO2(C
,D
,A
,B
,15,14,0xd8a1e681);
111 DO2(B
,C
,D
,A
,4,20,0xe7d3fbc8);
113 DO2(A
,B
,C
,D
,9,5,0x21e1cde6);
114 DO2(D
,A
,B
,C
,14,9,0xc33707d6);
115 DO2(C
,D
,A
,B
,3,14,0xf4d50d87);
116 DO2(B
,C
,D
,A
,8,20,0x455a14ed);
118 DO2(A
,B
,C
,D
,13,5,0xa9e3e905);
119 DO2(D
,A
,B
,C
,2,9,0xfcefa3f8);
120 DO2(C
,D
,A
,B
,7,14,0x676f02d9);
121 DO2(B
,C
,D
,A
,12,20,0x8d2a4c8a);
125 DO3(A
,B
,C
,D
,5,4,0xfffa3942);
126 DO3(D
,A
,B
,C
,8,11,0x8771f681);
127 DO3(C
,D
,A
,B
,11,16,0x6d9d6122);
128 DO3(B
,C
,D
,A
,14,23,0xfde5380c);
130 DO3(A
,B
,C
,D
,1,4,0xa4beea44);
131 DO3(D
,A
,B
,C
,4,11,0x4bdecfa9);
132 DO3(C
,D
,A
,B
,7,16,0xf6bb4b60);
133 DO3(B
,C
,D
,A
,10,23,0xbebfbc70);
135 DO3(A
,B
,C
,D
,13,4,0x289b7ec6);
136 DO3(D
,A
,B
,C
,0,11,0xeaa127fa);
137 DO3(C
,D
,A
,B
,3,16,0xd4ef3085);
138 DO3(B
,C
,D
,A
,6,23,0x4881d05);
140 DO3(A
,B
,C
,D
,9,4,0xd9d4d039);
141 DO3(D
,A
,B
,C
,12,11,0xe6db99e5);
142 DO3(C
,D
,A
,B
,15,16,0x1fa27cf8);
143 DO3(B
,C
,D
,A
,2,23,0xc4ac5665);
147 DO4(A
,B
,C
,D
,0,6,0xf4292244);
148 DO4(D
,A
,B
,C
,7,10,0x432aff97);
149 DO4(C
,D
,A
,B
,14,15,0xab9423a7);
150 DO4(B
,C
,D
,A
,5,21,0xfc93a039);
152 DO4(A
,B
,C
,D
,12,6,0x655b59c3);
153 DO4(D
,A
,B
,C
,3,10,0x8f0ccc92);
154 DO4(C
,D
,A
,B
,10,15,0xffeff47d);
155 DO4(B
,C
,D
,A
,1,21,0x85845dd1);
157 DO4(A
,B
,C
,D
,8,6,0x6fa87e4f);
158 DO4(D
,A
,B
,C
,15,10,0xfe2ce6e0);
159 DO4(C
,D
,A
,B
,6,15,0xa3014314);
160 DO4(B
,C
,D
,A
,13,21,0x4e0811a1);
162 DO4(A
,B
,C
,D
,4,6,0xf7537e82);
163 DO4(D
,A
,B
,C
,11,10,0xbd3af235);
164 DO4(C
,D
,A
,B
,2,15,0x2ad7d2bb);
165 DO4(B
,C
,D
,A
,9,21,0xeb86d391);
174 * From `Performance analysis of MD5' by Joseph D. Touch <touch@isi.edu>
177 #if defined(WORDS_BIGENDIAN)
178 static inline uint32_t
179 swap_uint32_t (uint32_t t
)
181 uint32_t temp1
, temp2
;
183 temp1
= cshift(t
, 16);
188 return temp1
| temp2
;
198 MD5_Update (struct md5
*m
, const void *v
, size_t len
)
200 const unsigned char *p
= v
;
201 size_t old_sz
= m
->sz
[0];
205 if (m
->sz
[0] < old_sz
)
207 offset
= (old_sz
/ 8) % 64;
209 size_t l
= min(len
, 64 - offset
);
210 memcpy(m
->save
+ offset
, p
, l
);
215 #if defined(WORDS_BIGENDIAN)
217 uint32_t current
[16];
218 struct x32
*u
= (struct x32
*)m
->save
;
219 for(i
= 0; i
< 8; i
++){
220 current
[2*i
+0] = swap_uint32_t(u
[i
].a
);
221 current
[2*i
+1] = swap_uint32_t(u
[i
].b
);
225 calc(m
, (uint32_t*)m
->save
);
233 MD5_Final (void *res
, struct md5
*m
)
235 unsigned char zeros
[72];
236 unsigned offset
= (m
->sz
[0] / 8) % 64;
237 unsigned int dstart
= (120 - offset
- 1) % 64 + 1;
240 memset (zeros
+ 1, 0, sizeof(zeros
) - 1);
241 zeros
[dstart
+0] = (m
->sz
[0] >> 0) & 0xff;
242 zeros
[dstart
+1] = (m
->sz
[0] >> 8) & 0xff;
243 zeros
[dstart
+2] = (m
->sz
[0] >> 16) & 0xff;
244 zeros
[dstart
+3] = (m
->sz
[0] >> 24) & 0xff;
245 zeros
[dstart
+4] = (m
->sz
[1] >> 0) & 0xff;
246 zeros
[dstart
+5] = (m
->sz
[1] >> 8) & 0xff;
247 zeros
[dstart
+6] = (m
->sz
[1] >> 16) & 0xff;
248 zeros
[dstart
+7] = (m
->sz
[1] >> 24) & 0xff;
249 MD5_Update (m
, zeros
, dstart
+ 8);
252 unsigned char *r
= (unsigned char *)res
;
254 for (i
= 0; i
< 4; ++i
) {
255 r
[4*i
] = m
->counter
[i
] & 0xFF;
256 r
[4*i
+1] = (m
->counter
[i
] >> 8) & 0xFF;
257 r
[4*i
+2] = (m
->counter
[i
] >> 16) & 0xFF;
258 r
[4*i
+3] = (m
->counter
[i
] >> 24) & 0xFF;
264 uint32_t *r
= (uint32_t *)res
;
266 for (i
= 0; i
< 4; ++i
)
267 r
[i
] = swap_uint32_t (m
->counter
[i
]);