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1 /* crypto/md32_common.h */
2 /* ====================================================================
3 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
53 * This is a generic 32 bit "collector" for message digest algorithms.
54 * Whenever needed it collects input character stream into chunks of
55 * 32 bit values and invokes a block function that performs actual hash
62 * DATA_ORDER_IS_BIG_ENDIAN or DATA_ORDER_IS_LITTLE_ENDIAN
63 * this macro defines byte order of input stream.
65 * size of a unit chunk HASH_BLOCK operates on.
67 * has to be at lest 32 bit wide, if it's wider, then
68 * HASH_LONG_LOG2 *has to* be defined along
70 * context structure that at least contains following
76 * HASH_LONG data[HASH_LBLOCK];
77 * unsigned char data[HASH_CBLOCK];
82 * data[] vector is expected to be zeroed upon first call to
85 * name of "Update" function, implemented here.
87 * name of "Transform" function, implemented here.
89 * name of "Final" function, implemented here.
90 * HASH_BLOCK_DATA_ORDER
91 * name of "block" function capable of treating *unaligned* input
92 * message in original (data) byte order, implemented externally.
94 * macro convering context variables to an ASCII hash string.
98 * #define DATA_ORDER_IS_LITTLE_ENDIAN
100 * #define HASH_LONG MD5_LONG
101 * #define HASH_LONG_LOG2 MD5_LONG_LOG2
102 * #define HASH_CTX MD5_CTX
103 * #define HASH_CBLOCK MD5_CBLOCK
104 * #define HASH_UPDATE MD5_Update
105 * #define HASH_TRANSFORM MD5_Transform
106 * #define HASH_FINAL MD5_Final
107 * #define HASH_BLOCK_DATA_ORDER md5_block_data_order
109 * <appro@fy.chalmers.se>
112 #include <openssl/crypto.h>
114 #if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
115 # error "DATA_ORDER must be defined!"
119 # error "HASH_CBLOCK must be defined!"
122 # error "HASH_LONG must be defined!"
125 # error "HASH_CTX must be defined!"
129 # error "HASH_UPDATE must be defined!"
131 #ifndef HASH_TRANSFORM
132 # error "HASH_TRANSFORM must be defined!"
135 # error "HASH_FINAL must be defined!"
138 #ifndef HASH_BLOCK_DATA_ORDER
139 # error "HASH_BLOCK_DATA_ORDER must be defined!"
143 * Engage compiler specific rotate intrinsic function if available.
147 # if defined(_MSC_VER)
148 # define ROTATE(a,n) _lrotl(a,n)
149 # elif defined(__ICC)
150 # define ROTATE(a,n) _rotl(a,n)
151 # elif defined(__MWERKS__)
152 # if defined(__POWERPC__)
153 # define ROTATE(a,n) __rlwinm(a,n,0,31)
154 # elif defined(__MC68K__)
155 /* Motorola specific tweak. <appro@fy.chalmers.se> */
156 # define ROTATE(a,n) ( n<24 ? __rol(a,n) : __ror(a,32-n) )
158 # define ROTATE(a,n) __rol(a,n)
160 # elif defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
162 * Some GNU C inline assembler templates. Note that these are
163 * rotates by *constant* number of bits! But that's exactly
164 * what we need here...
165 * <appro@fy.chalmers.se>
167 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
168 # define ROTATE(a,n) ({ register unsigned int ret; \
172 : "I"(n), "0"((unsigned int)(a)) \
176 # elif defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
177 defined(__powerpc) || defined(__ppc__) || defined(__powerpc64__)
178 # define ROTATE(a,n) ({ register unsigned int ret; \
180 "rlwinm %0,%1,%2,0,31" \
185 # elif defined(__s390x__)
186 # define ROTATE(a,n) ({ register unsigned int ret; \
187 asm ("rll %0,%1,%2" \
194 #endif /* PEDANTIC */
197 # define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
200 #if defined(DATA_ORDER_IS_BIG_ENDIAN)
203 # if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
204 # if ((defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)) || \
205 (defined(__x86_64) || defined(__x86_64__))
206 # if !defined(B_ENDIAN)
208 * This gives ~30-40% performance improvement in SHA-256 compiled
209 * with gcc [on P4]. Well, first macro to be frank. We can pull
210 * this trick on x86* platforms only, because these CPUs can fetch
211 * unaligned data without raising an exception.
213 # define HOST_c2l(c,l) ({ unsigned int r=*((const unsigned int *)(c)); \
214 asm ("bswapl %0":"=r"(r):"0"(r)); \
216 # define HOST_l2c(l,c) ({ unsigned int r=(l); \
217 asm ("bswapl %0":"=r"(r):"0"(r)); \
218 *((unsigned int *)(c))=r; (c)+=4; r; })
223 # if defined(__s390__) || defined(__s390x__)
224 # define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, (l))
225 # define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, (l))
229 # define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++)))<<24), \
230 l|=(((unsigned long)(*((c)++)))<<16), \
231 l|=(((unsigned long)(*((c)++)))<< 8), \
232 l|=(((unsigned long)(*((c)++))) ) )
235 # define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
236 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
237 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
238 *((c)++)=(unsigned char)(((l) )&0xff), \
242 #elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
245 # if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
246 # if defined(__s390x__)
247 # define HOST_c2l(c,l) ({ asm ("lrv %0,%1" \
248 :"=d"(l) :"m"(*(const unsigned int *)(c)));\
250 # define HOST_l2c(l,c) ({ asm ("strv %1,%0" \
251 :"=m"(*(unsigned int *)(c)) :"d"(l));\
256 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
258 /* See comment in DATA_ORDER_IS_BIG_ENDIAN section. */
259 # define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, l)
260 # define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, l)
265 # define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \
266 l|=(((unsigned long)(*((c)++)))<< 8), \
267 l|=(((unsigned long)(*((c)++)))<<16), \
268 l|=(((unsigned long)(*((c)++)))<<24) )
271 # define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
272 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
273 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
274 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
281 * Time for some action:-)
284 int HASH_UPDATE(HASH_CTX
*c
, const void *data_
, size_t len
)
286 const unsigned char *data
= data_
;
294 l
= (c
->Nl
+ (((HASH_LONG
) len
) << 3)) & 0xffffffffUL
;
296 * 95-05-24 eay Fixed a bug with the overflow handling, thanks to Wei Dai
297 * <weidai@eskimo.com> for pointing it out.
299 if (l
< c
->Nl
) /* overflow */
301 c
->Nh
+= (HASH_LONG
) (len
>> 29); /* might cause compiler warning on
307 p
= (unsigned char *)c
->data
;
309 if (len
>= HASH_CBLOCK
|| len
+ n
>= HASH_CBLOCK
) {
310 memcpy(p
+ n
, data
, HASH_CBLOCK
- n
);
311 HASH_BLOCK_DATA_ORDER(c
, p
, 1);
317 * We use memset rather than OPENSSL_cleanse() here deliberately.
318 * Using OPENSSL_cleanse() here could be a performance issue. It
319 * will get properly cleansed on finalisation so this isn't a
322 memset(p
, 0, HASH_CBLOCK
); /* keep it zeroed */
324 memcpy(p
+ n
, data
, len
);
325 c
->num
+= (unsigned int)len
;
330 n
= len
/ HASH_CBLOCK
;
332 HASH_BLOCK_DATA_ORDER(c
, data
, n
);
339 p
= (unsigned char *)c
->data
;
340 c
->num
= (unsigned int)len
;
341 memcpy(p
, data
, len
);
346 void HASH_TRANSFORM(HASH_CTX
*c
, const unsigned char *data
)
348 HASH_BLOCK_DATA_ORDER(c
, data
, 1);
351 int HASH_FINAL(unsigned char *md
, HASH_CTX
*c
)
353 unsigned char *p
= (unsigned char *)c
->data
;
356 p
[n
] = 0x80; /* there is always room for one */
359 if (n
> (HASH_CBLOCK
- 8)) {
360 memset(p
+ n
, 0, HASH_CBLOCK
- n
);
362 HASH_BLOCK_DATA_ORDER(c
, p
, 1);
364 memset(p
+ n
, 0, HASH_CBLOCK
- 8 - n
);
366 p
+= HASH_CBLOCK
- 8;
367 #if defined(DATA_ORDER_IS_BIG_ENDIAN)
368 (void)HOST_l2c(c
->Nh
, p
);
369 (void)HOST_l2c(c
->Nl
, p
);
370 #elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
371 (void)HOST_l2c(c
->Nl
, p
);
372 (void)HOST_l2c(c
->Nh
, p
);
375 HASH_BLOCK_DATA_ORDER(c
, p
, 1);
377 OPENSSL_cleanse(p
, HASH_CBLOCK
);
379 #ifndef HASH_MAKE_STRING
380 # error "HASH_MAKE_STRING must be defined!"
382 HASH_MAKE_STRING(c
, md
);
389 # if defined(__alpha) || defined(__sparcv9) || defined(__mips)
390 # define MD32_REG_T long
392 * This comment was originaly written for MD5, which is why it
393 * discusses A-D. But it basically applies to all 32-bit digests,
394 * which is why it was moved to common header file.
396 * In case you wonder why A-D are declared as long and not
397 * as MD5_LONG. Doing so results in slight performance
398 * boost on LP64 architectures. The catch is we don't
399 * really care if 32 MSBs of a 64-bit register get polluted
400 * with eventual overflows as we *save* only 32 LSBs in
401 * *either* case. Now declaring 'em long excuses the compiler
402 * from keeping 32 MSBs zeroed resulting in 13% performance
403 * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
404 * Well, to be honest it should say that this *prevents*
405 * performance degradation.
406 * <appro@fy.chalmers.se>
410 * Above is not absolute and there are LP64 compilers that
411 * generate better code if MD32_REG_T is defined int. The above
412 * pre-processor condition reflects the circumstances under which
413 * the conclusion was made and is subject to further extension.
414 * <appro@fy.chalmers.se>
416 # define MD32_REG_T int