]>
git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/md5/md5_dgst.c
1 /* crypto/md5/md5_dgst.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/opensslv.h>
63 char *MD5_version
="MD5" OPENSSL_VERSION_PTEXT
;
65 /* Implemented from RFC1321 The MD5 Message-Digest Algorithm
68 #define INIT_DATA_A (unsigned long)0x67452301L
69 #define INIT_DATA_B (unsigned long)0xefcdab89L
70 #define INIT_DATA_C (unsigned long)0x98badcfeL
71 #define INIT_DATA_D (unsigned long)0x10325476L
75 void md5_block_x86(MD5_CTX
*c
, unsigned long *p
,int num
);
76 # define md5_block md5_block_x86
78 static void md5_block(MD5_CTX
*c
, unsigned long *p
,int num
);
83 # define md5_block md5_block_x86
85 static void md5_block();
89 void MD5_Init(MD5_CTX
*c
)
100 void MD5_Update(MD5_CTX
*c
, const void *_data
, unsigned long len
)
102 register const unsigned char *data
=_data
;
107 if (len
== 0) return;
109 l
=(c
->Nl
+(len
<<3))&0xffffffffL
;
110 /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to
111 * Wei Dai <weidai@eskimo.com> for pointing it out. */
112 if (l
< c
->Nl
) /* overflow */
123 if ((c
->num
+len
) >= MD5_CBLOCK
)
128 for (; sw
<MD5_LBLOCK
; sw
++)
133 len
-=(MD5_CBLOCK
-c
->num
);
137 /* drop through and do the rest */
144 if ((sc
+len
) < 4) /* ugly, add char's to a word */
147 p_c2l_p(data
,l
,sc
,len
);
157 for (; sw
< ew
; sw
++)
158 { c2l(data
,l
); p
[sw
]=l
; }
168 /* we now can process the input data in blocks of MD5_CBLOCK
169 * chars and save the leftovers to c->data. */
171 if ((((unsigned long)data
)%sizeof(ULONG
)) == 0)
173 sw
=(int)len
/MD5_CBLOCK
;
177 md5_block(c
,(ULONG
*)data
,sw
);
184 while (len
>= MD5_CBLOCK
)
186 #if defined(L_ENDIAN) || defined(B_ENDIAN)
187 if (p
!= (unsigned long *)data
)
188 memcpy(p
,data
,MD5_CBLOCK
);
191 for (sw
=(MD5_LBLOCK
/4); sw
; sw
--)
193 Endian_Reverse32(p
[0]);
194 Endian_Reverse32(p
[1]);
195 Endian_Reverse32(p
[2]);
196 Endian_Reverse32(p
[3]);
201 for (sw
=(MD5_LBLOCK
/4); sw
; sw
--)
203 c2l(data
,l
); *(p
++)=l
;
204 c2l(data
,l
); *(p
++)=l
;
205 c2l(data
,l
); *(p
++)=l
;
206 c2l(data
,l
); *(p
++)=l
;
217 sw
=sc
>>2; /* words to copy */
224 { c2l(data
,l
); *(p
++)=l
; }
231 void MD5_Transform(MD5_CTX
*c
, unsigned char *b
)
234 #if !defined(L_ENDIAN)
239 #if defined(B_ENDIAN) || defined(L_ENDIAN)
243 for (i
=(MD5_LBLOCK
/4); i
; i
--)
245 Endian_Reverse32(q
[0]);
246 Endian_Reverse32(q
[1]);
247 Endian_Reverse32(q
[2]);
248 Endian_Reverse32(q
[3]);
254 for (i
=(MD5_LBLOCK
/4); i
; i
--)
268 static void md5_block(MD5_CTX
*c
, register ULONG
*X
, int num
)
270 register ULONG A
,B
,C
,D
;
279 R0(A
,B
,C
,D
,X
[ 0], 7,0xd76aa478L
);
280 R0(D
,A
,B
,C
,X
[ 1],12,0xe8c7b756L
);
281 R0(C
,D
,A
,B
,X
[ 2],17,0x242070dbL
);
282 R0(B
,C
,D
,A
,X
[ 3],22,0xc1bdceeeL
);
283 R0(A
,B
,C
,D
,X
[ 4], 7,0xf57c0fafL
);
284 R0(D
,A
,B
,C
,X
[ 5],12,0x4787c62aL
);
285 R0(C
,D
,A
,B
,X
[ 6],17,0xa8304613L
);
286 R0(B
,C
,D
,A
,X
[ 7],22,0xfd469501L
);
287 R0(A
,B
,C
,D
,X
[ 8], 7,0x698098d8L
);
288 R0(D
,A
,B
,C
,X
[ 9],12,0x8b44f7afL
);
289 R0(C
,D
,A
,B
,X
[10],17,0xffff5bb1L
);
290 R0(B
,C
,D
,A
,X
[11],22,0x895cd7beL
);
291 R0(A
,B
,C
,D
,X
[12], 7,0x6b901122L
);
292 R0(D
,A
,B
,C
,X
[13],12,0xfd987193L
);
293 R0(C
,D
,A
,B
,X
[14],17,0xa679438eL
);
294 R0(B
,C
,D
,A
,X
[15],22,0x49b40821L
);
296 R1(A
,B
,C
,D
,X
[ 1], 5,0xf61e2562L
);
297 R1(D
,A
,B
,C
,X
[ 6], 9,0xc040b340L
);
298 R1(C
,D
,A
,B
,X
[11],14,0x265e5a51L
);
299 R1(B
,C
,D
,A
,X
[ 0],20,0xe9b6c7aaL
);
300 R1(A
,B
,C
,D
,X
[ 5], 5,0xd62f105dL
);
301 R1(D
,A
,B
,C
,X
[10], 9,0x02441453L
);
302 R1(C
,D
,A
,B
,X
[15],14,0xd8a1e681L
);
303 R1(B
,C
,D
,A
,X
[ 4],20,0xe7d3fbc8L
);
304 R1(A
,B
,C
,D
,X
[ 9], 5,0x21e1cde6L
);
305 R1(D
,A
,B
,C
,X
[14], 9,0xc33707d6L
);
306 R1(C
,D
,A
,B
,X
[ 3],14,0xf4d50d87L
);
307 R1(B
,C
,D
,A
,X
[ 8],20,0x455a14edL
);
308 R1(A
,B
,C
,D
,X
[13], 5,0xa9e3e905L
);
309 R1(D
,A
,B
,C
,X
[ 2], 9,0xfcefa3f8L
);
310 R1(C
,D
,A
,B
,X
[ 7],14,0x676f02d9L
);
311 R1(B
,C
,D
,A
,X
[12],20,0x8d2a4c8aL
);
313 R2(A
,B
,C
,D
,X
[ 5], 4,0xfffa3942L
);
314 R2(D
,A
,B
,C
,X
[ 8],11,0x8771f681L
);
315 R2(C
,D
,A
,B
,X
[11],16,0x6d9d6122L
);
316 R2(B
,C
,D
,A
,X
[14],23,0xfde5380cL
);
317 R2(A
,B
,C
,D
,X
[ 1], 4,0xa4beea44L
);
318 R2(D
,A
,B
,C
,X
[ 4],11,0x4bdecfa9L
);
319 R2(C
,D
,A
,B
,X
[ 7],16,0xf6bb4b60L
);
320 R2(B
,C
,D
,A
,X
[10],23,0xbebfbc70L
);
321 R2(A
,B
,C
,D
,X
[13], 4,0x289b7ec6L
);
322 R2(D
,A
,B
,C
,X
[ 0],11,0xeaa127faL
);
323 R2(C
,D
,A
,B
,X
[ 3],16,0xd4ef3085L
);
324 R2(B
,C
,D
,A
,X
[ 6],23,0x04881d05L
);
325 R2(A
,B
,C
,D
,X
[ 9], 4,0xd9d4d039L
);
326 R2(D
,A
,B
,C
,X
[12],11,0xe6db99e5L
);
327 R2(C
,D
,A
,B
,X
[15],16,0x1fa27cf8L
);
328 R2(B
,C
,D
,A
,X
[ 2],23,0xc4ac5665L
);
330 R3(A
,B
,C
,D
,X
[ 0], 6,0xf4292244L
);
331 R3(D
,A
,B
,C
,X
[ 7],10,0x432aff97L
);
332 R3(C
,D
,A
,B
,X
[14],15,0xab9423a7L
);
333 R3(B
,C
,D
,A
,X
[ 5],21,0xfc93a039L
);
334 R3(A
,B
,C
,D
,X
[12], 6,0x655b59c3L
);
335 R3(D
,A
,B
,C
,X
[ 3],10,0x8f0ccc92L
);
336 R3(C
,D
,A
,B
,X
[10],15,0xffeff47dL
);
337 R3(B
,C
,D
,A
,X
[ 1],21,0x85845dd1L
);
338 R3(A
,B
,C
,D
,X
[ 8], 6,0x6fa87e4fL
);
339 R3(D
,A
,B
,C
,X
[15],10,0xfe2ce6e0L
);
340 R3(C
,D
,A
,B
,X
[ 6],15,0xa3014314L
);
341 R3(B
,C
,D
,A
,X
[13],21,0x4e0811a1L
);
342 R3(A
,B
,C
,D
,X
[ 4], 6,0xf7537e82L
);
343 R3(D
,A
,B
,C
,X
[11],10,0xbd3af235L
);
344 R3(C
,D
,A
,B
,X
[ 2],15,0x2ad7d2bbL
);
345 R3(B
,C
,D
,A
,X
[ 9],21,0xeb86d391L
);
362 void MD5_Final(unsigned char *md
, MD5_CTX
*c
)
367 static unsigned char end
[4]={0x80,0x00,0x00,0x00};
368 unsigned char *cp
=end
;
370 /* c->num should definitly have room for at least one more byte. */
375 /* purify often complains about the following line as an
376 * Uninitialized Memory Read. While this can be true, the
377 * following p_c2l macro will reset l when that case is true.
378 * This is because j&0x03 contains the number of 'valid' bytes
379 * already in p[i]. If and only if j&0x03 == 0, the UMR will
380 * occur but this is also the only time p_c2l will do
381 * l= *(cp++) instead of l|= *(cp++)
382 * Many thanks to Alex Tang <altitude@cic.net> for pickup this
385 if ((j
&0x03) == 0) p
[i
]=0;
391 /* i is the next 'undefined word' */
392 if (c
->num
>= MD5_LAST_BLOCK
)
394 for (; i
<MD5_LBLOCK
; i
++)
399 for (; i
<(MD5_LBLOCK
-2); i
++)
401 p
[MD5_LBLOCK
-2]=c
->Nl
;
402 p
[MD5_LBLOCK
-1]=c
->Nh
;
410 /* clear stuff, md5_block may be leaving some stuff on the stack
411 * but I'm not worried :-) */
413 /* memset((char *)&c,0,sizeof(c));*/
417 int printit(unsigned long *l
)
423 for (ii
=0; ii
<8; ii
++)
425 fprintf(stderr
,"%08lx ",l
[i
*8+ii
]);
427 fprintf(stderr
,"\n");