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-rw-r--r--src/lib/libcrypto/md32_common.h473
1 files changed, 116 insertions, 357 deletions
diff --git a/src/lib/libcrypto/md32_common.h b/src/lib/libcrypto/md32_common.h
index 733da6acaf..089c450290 100644
--- a/src/lib/libcrypto/md32_common.h
+++ b/src/lib/libcrypto/md32_common.h
@@ -1,6 +1,6 @@
1/* crypto/md32_common.h */ 1/* crypto/md32_common.h */
2/* ==================================================================== 2/* ====================================================================
3 * Copyright (c) 1999-2002 The OpenSSL Project. All rights reserved. 3 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
4 * 4 *
5 * Redistribution and use in source and binary forms, with or without 5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions 6 * modification, are permitted provided that the following conditions
@@ -47,10 +47,6 @@
47 * OF THE POSSIBILITY OF SUCH DAMAGE. 47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ==================================================================== 48 * ====================================================================
49 * 49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */ 50 */
55 51
56/* 52/*
@@ -76,40 +72,27 @@
76 * typedef struct { 72 * typedef struct {
77 * ... 73 * ...
78 * HASH_LONG Nl,Nh; 74 * HASH_LONG Nl,Nh;
75 * either {
79 * HASH_LONG data[HASH_LBLOCK]; 76 * HASH_LONG data[HASH_LBLOCK];
80 * int num; 77 * unsigned char data[HASH_CBLOCK];
78 * };
79 * unsigned int num;
81 * ... 80 * ...
82 * } HASH_CTX; 81 * } HASH_CTX;
82 * data[] vector is expected to be zeroed upon first call to
83 * HASH_UPDATE.
83 * HASH_UPDATE 84 * HASH_UPDATE
84 * name of "Update" function, implemented here. 85 * name of "Update" function, implemented here.
85 * HASH_TRANSFORM 86 * HASH_TRANSFORM
86 * name of "Transform" function, implemented here. 87 * name of "Transform" function, implemented here.
87 * HASH_FINAL 88 * HASH_FINAL
88 * name of "Final" function, implemented here. 89 * name of "Final" function, implemented here.
89 * HASH_BLOCK_HOST_ORDER
90 * name of "block" function treating *aligned* input message
91 * in host byte order, implemented externally.
92 * HASH_BLOCK_DATA_ORDER 90 * HASH_BLOCK_DATA_ORDER
93 * name of "block" function treating *unaligned* input message 91 * name of "block" function capable of treating *unaligned* input
94 * in original (data) byte order, implemented externally (it 92 * message in original (data) byte order, implemented externally.
95 * actually is optional if data and host are of the same
96 * "endianess").
97 * HASH_MAKE_STRING 93 * HASH_MAKE_STRING
98 * macro convering context variables to an ASCII hash string. 94 * macro convering context variables to an ASCII hash string.
99 * 95 *
100 * Optional macros:
101 *
102 * B_ENDIAN or L_ENDIAN
103 * defines host byte-order.
104 * HASH_LONG_LOG2
105 * defaults to 2 if not states otherwise.
106 * HASH_LBLOCK
107 * assumed to be HASH_CBLOCK/4 if not stated otherwise.
108 * HASH_BLOCK_DATA_ORDER_ALIGNED
109 * alternative "block" function capable of treating
110 * aligned input message in original (data) order,
111 * implemented externally.
112 *
113 * MD5 example: 96 * MD5 example:
114 * 97 *
115 * #define DATA_ORDER_IS_LITTLE_ENDIAN 98 * #define DATA_ORDER_IS_LITTLE_ENDIAN
@@ -118,20 +101,14 @@
118 * #define HASH_LONG_LOG2 MD5_LONG_LOG2 101 * #define HASH_LONG_LOG2 MD5_LONG_LOG2
119 * #define HASH_CTX MD5_CTX 102 * #define HASH_CTX MD5_CTX
120 * #define HASH_CBLOCK MD5_CBLOCK 103 * #define HASH_CBLOCK MD5_CBLOCK
121 * #define HASH_LBLOCK MD5_LBLOCK
122 * #define HASH_UPDATE MD5_Update 104 * #define HASH_UPDATE MD5_Update
123 * #define HASH_TRANSFORM MD5_Transform 105 * #define HASH_TRANSFORM MD5_Transform
124 * #define HASH_FINAL MD5_Final 106 * #define HASH_FINAL MD5_Final
125 * #define HASH_BLOCK_HOST_ORDER md5_block_host_order
126 * #define HASH_BLOCK_DATA_ORDER md5_block_data_order 107 * #define HASH_BLOCK_DATA_ORDER md5_block_data_order
127 * 108 *
128 * <appro@fy.chalmers.se> 109 * <appro@fy.chalmers.se>
129 */ 110 */
130 111
131#include <openssl/crypto.h>
132#include <openssl/fips.h>
133#include <openssl/err.h>
134
135#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN) 112#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
136#error "DATA_ORDER must be defined!" 113#error "DATA_ORDER must be defined!"
137#endif 114#endif
@@ -156,34 +133,16 @@
156#error "HASH_FINAL must be defined!" 133#error "HASH_FINAL must be defined!"
157#endif 134#endif
158 135
159#ifndef HASH_BLOCK_HOST_ORDER
160#error "HASH_BLOCK_HOST_ORDER must be defined!"
161#endif
162
163#if 0
164/*
165 * Moved below as it's required only if HASH_BLOCK_DATA_ORDER_ALIGNED
166 * isn't defined.
167 */
168#ifndef HASH_BLOCK_DATA_ORDER 136#ifndef HASH_BLOCK_DATA_ORDER
169#error "HASH_BLOCK_DATA_ORDER must be defined!" 137#error "HASH_BLOCK_DATA_ORDER must be defined!"
170#endif 138#endif
171#endif
172
173#ifndef HASH_LBLOCK
174#define HASH_LBLOCK (HASH_CBLOCK/4)
175#endif
176
177#ifndef HASH_LONG_LOG2
178#define HASH_LONG_LOG2 2
179#endif
180 139
181/* 140/*
182 * Engage compiler specific rotate intrinsic function if available. 141 * Engage compiler specific rotate intrinsic function if available.
183 */ 142 */
184#undef ROTATE 143#undef ROTATE
185#ifndef PEDANTIC 144#ifndef PEDANTIC
186# if 0 /* defined(_MSC_VER) */ 145# if defined(_MSC_VER) || defined(__ICC)
187# define ROTATE(a,n) _lrotl(a,n) 146# define ROTATE(a,n) _lrotl(a,n)
188# elif defined(__MWERKS__) 147# elif defined(__MWERKS__)
189# if defined(__POWERPC__) 148# if defined(__POWERPC__)
@@ -199,7 +158,6 @@
199 * Some GNU C inline assembler templates. Note that these are 158 * Some GNU C inline assembler templates. Note that these are
200 * rotates by *constant* number of bits! But that's exactly 159 * rotates by *constant* number of bits! But that's exactly
201 * what we need here... 160 * what we need here...
202 *
203 * <appro@fy.chalmers.se> 161 * <appro@fy.chalmers.se>
204 */ 162 */
205# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__) 163# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
@@ -211,7 +169,8 @@
211 : "cc"); \ 169 : "cc"); \
212 ret; \ 170 ret; \
213 }) 171 })
214# elif defined(__powerpc) || defined(__ppc__) || defined(__powerpc64__) 172# elif defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
173 defined(__powerpc) || defined(__ppc__) || defined(__powerpc64__)
215# define ROTATE(a,n) ({ register unsigned int ret; \ 174# define ROTATE(a,n) ({ register unsigned int ret; \
216 asm ( \ 175 asm ( \
217 "rlwinm %0,%1,%2,0,31" \ 176 "rlwinm %0,%1,%2,0,31" \
@@ -219,194 +178,100 @@
219 : "r"(a), "I"(n)); \ 178 : "r"(a), "I"(n)); \
220 ret; \ 179 ret; \
221 }) 180 })
222# endif 181# elif defined(__s390x__)
223# endif 182# define ROTATE(a,n) ({ register unsigned int ret; \
224 183 asm ("rll %0,%1,%2" \
225/* 184 : "=r"(ret) \
226 * Engage compiler specific "fetch in reverse byte order" 185 : "r"(a), "I"(n)); \
227 * intrinsic function if available. 186 ret; \
228 */
229# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
230 /* some GNU C inline assembler templates by <appro@fy.chalmers.se> */
231# if (defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)) && !defined(I386_ONLY)
232# define BE_FETCH32(a) ({ register unsigned int l=(a);\
233 asm ( \
234 "bswapl %0" \
235 : "=r"(l) : "0"(l)); \
236 l; \
237 })
238# elif defined(__powerpc)
239# define LE_FETCH32(a) ({ register unsigned int l; \
240 asm ( \
241 "lwbrx %0,0,%1" \
242 : "=r"(l) \
243 : "r"(a)); \
244 l; \
245 })
246
247# elif defined(__sparc) && defined(OPENSSL_SYS_ULTRASPARC)
248# define LE_FETCH32(a) ({ register unsigned int l; \
249 asm ( \
250 "lda [%1]#ASI_PRIMARY_LITTLE,%0"\
251 : "=r"(l) \
252 : "r"(a)); \
253 l; \
254 }) 187 })
255# endif 188# endif
256# endif 189# endif
257#endif /* PEDANTIC */ 190#endif /* PEDANTIC */
258 191
259#if HASH_LONG_LOG2==2 /* Engage only if sizeof(HASH_LONG)== 4 */
260/* A nice byte order reversal from Wei Dai <weidai@eskimo.com> */
261#ifdef ROTATE
262/* 5 instructions with rotate instruction, else 9 */
263#define REVERSE_FETCH32(a,l) ( \
264 l=*(const HASH_LONG *)(a), \
265 ((ROTATE(l,8)&0x00FF00FF)|(ROTATE((l&0x00FF00FF),24))) \
266 )
267#else
268/* 6 instructions with rotate instruction, else 8 */
269#define REVERSE_FETCH32(a,l) ( \
270 l=*(const HASH_LONG *)(a), \
271 l=(((l>>8)&0x00FF00FF)|((l&0x00FF00FF)<<8)), \
272 ROTATE(l,16) \
273 )
274/*
275 * Originally the middle line started with l=(((l&0xFF00FF00)>>8)|...
276 * It's rewritten as above for two reasons:
277 * - RISCs aren't good at long constants and have to explicitely
278 * compose 'em with several (well, usually 2) instructions in a
279 * register before performing the actual operation and (as you
280 * already realized:-) having same constant should inspire the
281 * compiler to permanently allocate the only register for it;
282 * - most modern CPUs have two ALUs, but usually only one has
283 * circuitry for shifts:-( this minor tweak inspires compiler
284 * to schedule shift instructions in a better way...
285 *
286 * <appro@fy.chalmers.se>
287 */
288#endif
289#endif
290
291#ifndef ROTATE 192#ifndef ROTATE
292#define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n)))) 193#define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
293#endif 194#endif
294 195
295/* 196#if defined(DATA_ORDER_IS_BIG_ENDIAN)
296 * Make some obvious choices. E.g., HASH_BLOCK_DATA_ORDER_ALIGNED
297 * and HASH_BLOCK_HOST_ORDER ought to be the same if input data
298 * and host are of the same "endianess". It's possible to mask
299 * this with blank #define HASH_BLOCK_DATA_ORDER though...
300 *
301 * <appro@fy.chalmers.se>
302 */
303#if defined(B_ENDIAN)
304# if defined(DATA_ORDER_IS_BIG_ENDIAN)
305# if !defined(HASH_BLOCK_DATA_ORDER_ALIGNED) && HASH_LONG_LOG2==2
306# define HASH_BLOCK_DATA_ORDER_ALIGNED HASH_BLOCK_HOST_ORDER
307# endif
308# elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
309# ifndef HOST_FETCH32
310# ifdef LE_FETCH32
311# define HOST_FETCH32(p,l) LE_FETCH32(p)
312# elif defined(REVERSE_FETCH32)
313# define HOST_FETCH32(p,l) REVERSE_FETCH32(p,l)
314# endif
315# endif
316# endif
317#elif defined(L_ENDIAN)
318# if defined(DATA_ORDER_IS_LITTLE_ENDIAN)
319# if !defined(HASH_BLOCK_DATA_ORDER_ALIGNED) && HASH_LONG_LOG2==2
320# define HASH_BLOCK_DATA_ORDER_ALIGNED HASH_BLOCK_HOST_ORDER
321# endif
322# elif defined(DATA_ORDER_IS_BIG_ENDIAN)
323# ifndef HOST_FETCH32
324# ifdef BE_FETCH32
325# define HOST_FETCH32(p,l) BE_FETCH32(p)
326# elif defined(REVERSE_FETCH32)
327# define HOST_FETCH32(p,l) REVERSE_FETCH32(p,l)
328# endif
329# endif
330# endif
331#endif
332 197
333#if !defined(HASH_BLOCK_DATA_ORDER_ALIGNED) 198#ifndef PEDANTIC
334#ifndef HASH_BLOCK_DATA_ORDER 199# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
335#error "HASH_BLOCK_DATA_ORDER must be defined!" 200# if ((defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)) || \
201 (defined(__x86_64) || defined(__x86_64__))
202# if !defined(B_ENDIAN)
203 /*
204 * This gives ~30-40% performance improvement in SHA-256 compiled
205 * with gcc [on P4]. Well, first macro to be frank. We can pull
206 * this trick on x86* platforms only, because these CPUs can fetch
207 * unaligned data without raising an exception.
208 */
209# define HOST_c2l(c,l) ({ unsigned int r=*((const unsigned int *)(c)); \
210 asm ("bswapl %0":"=r"(r):"0"(r)); \
211 (c)+=4; (l)=r; })
212# define HOST_l2c(l,c) ({ unsigned int r=(l); \
213 asm ("bswapl %0":"=r"(r):"0"(r)); \
214 *((unsigned int *)(c))=r; (c)+=4; r; })
215# endif
216# endif
217# endif
336#endif 218#endif
219#if defined(__s390__) || defined(__s390x__)
220# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, (l))
221# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, (l))
337#endif 222#endif
338 223
339#if defined(DATA_ORDER_IS_BIG_ENDIAN) 224#ifndef HOST_c2l
340
341#define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++)))<<24), \ 225#define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++)))<<24), \
342 l|=(((unsigned long)(*((c)++)))<<16), \ 226 l|=(((unsigned long)(*((c)++)))<<16), \
343 l|=(((unsigned long)(*((c)++)))<< 8), \ 227 l|=(((unsigned long)(*((c)++)))<< 8), \
344 l|=(((unsigned long)(*((c)++))) ), \ 228 l|=(((unsigned long)(*((c)++))) ), \
345 l) 229 l)
346#define HOST_p_c2l(c,l,n) { \ 230#endif
347 switch (n) { \ 231#ifndef HOST_l2c
348 case 0: l =((unsigned long)(*((c)++)))<<24; \
349 case 1: l|=((unsigned long)(*((c)++)))<<16; \
350 case 2: l|=((unsigned long)(*((c)++)))<< 8; \
351 case 3: l|=((unsigned long)(*((c)++))); \
352 } }
353#define HOST_p_c2l_p(c,l,sc,len) { \
354 switch (sc) { \
355 case 0: l =((unsigned long)(*((c)++)))<<24; \
356 if (--len == 0) break; \
357 case 1: l|=((unsigned long)(*((c)++)))<<16; \
358 if (--len == 0) break; \
359 case 2: l|=((unsigned long)(*((c)++)))<< 8; \
360 } }
361/* NOTE the pointer is not incremented at the end of this */
362#define HOST_c2l_p(c,l,n) { \
363 l=0; (c)+=n; \
364 switch (n) { \
365 case 3: l =((unsigned long)(*(--(c))))<< 8; \
366 case 2: l|=((unsigned long)(*(--(c))))<<16; \
367 case 1: l|=((unsigned long)(*(--(c))))<<24; \
368 } }
369#define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 232#define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
370 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 233 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
371 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 234 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
372 *((c)++)=(unsigned char)(((l) )&0xff), \ 235 *((c)++)=(unsigned char)(((l) )&0xff), \
373 l) 236 l)
237#endif
374 238
375#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN) 239#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
376 240
241#ifndef PEDANTIC
242# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
243# if defined(__s390x__)
244# define HOST_c2l(c,l) ({ asm ("lrv %0,0(%1)" \
245 :"=r"(l) : "r"(c)); \
246 (c)+=4; (l); })
247# define HOST_l2c(l,c) ({ asm ("strv %0,0(%1)" \
248 : : "r"(l),"r"(c) : "memory"); \
249 (c)+=4; (l); })
250# endif
251# endif
252#endif
253#if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
254# ifndef B_ENDIAN
255 /* See comment in DATA_ORDER_IS_BIG_ENDIAN section. */
256# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, l)
257# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, l)
258# endif
259#endif
260
261#ifndef HOST_c2l
377#define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \ 262#define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \
378 l|=(((unsigned long)(*((c)++)))<< 8), \ 263 l|=(((unsigned long)(*((c)++)))<< 8), \
379 l|=(((unsigned long)(*((c)++)))<<16), \ 264 l|=(((unsigned long)(*((c)++)))<<16), \
380 l|=(((unsigned long)(*((c)++)))<<24), \ 265 l|=(((unsigned long)(*((c)++)))<<24), \
381 l) 266 l)
382#define HOST_p_c2l(c,l,n) { \ 267#endif
383 switch (n) { \ 268#ifndef HOST_l2c
384 case 0: l =((unsigned long)(*((c)++))); \
385 case 1: l|=((unsigned long)(*((c)++)))<< 8; \
386 case 2: l|=((unsigned long)(*((c)++)))<<16; \
387 case 3: l|=((unsigned long)(*((c)++)))<<24; \
388 } }
389#define HOST_p_c2l_p(c,l,sc,len) { \
390 switch (sc) { \
391 case 0: l =((unsigned long)(*((c)++))); \
392 if (--len == 0) break; \
393 case 1: l|=((unsigned long)(*((c)++)))<< 8; \
394 if (--len == 0) break; \
395 case 2: l|=((unsigned long)(*((c)++)))<<16; \
396 } }
397/* NOTE the pointer is not incremented at the end of this */
398#define HOST_c2l_p(c,l,n) { \
399 l=0; (c)+=n; \
400 switch (n) { \
401 case 3: l =((unsigned long)(*(--(c))))<<16; \
402 case 2: l|=((unsigned long)(*(--(c))))<< 8; \
403 case 1: l|=((unsigned long)(*(--(c)))); \
404 } }
405#define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 269#define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
406 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 270 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
407 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 271 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
408 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 272 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
409 l) 273 l)
274#endif
410 275
411#endif 276#endif
412 277
@@ -414,118 +279,60 @@
414 * Time for some action:-) 279 * Time for some action:-)
415 */ 280 */
416 281
417int HASH_UPDATE (HASH_CTX *c, const void *data_, unsigned long len) 282int HASH_UPDATE (HASH_CTX *c, const void *data_, size_t len)
418 { 283 {
419 const unsigned char *data=data_; 284 const unsigned char *data=data_;
420 register HASH_LONG * p; 285 unsigned char *p;
421 register unsigned long l; 286 HASH_LONG l;
422 int sw,sc,ew,ec; 287 size_t n;
423 288
424 if (len==0) return 1; 289 if (len==0) return 1;
425 290
426 l=(c->Nl+(len<<3))&0xffffffffL; 291 l=(c->Nl+(((HASH_LONG)len)<<3))&0xffffffffUL;
427 /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to 292 /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to
428 * Wei Dai <weidai@eskimo.com> for pointing it out. */ 293 * Wei Dai <weidai@eskimo.com> for pointing it out. */
429 if (l < c->Nl) /* overflow */ 294 if (l < c->Nl) /* overflow */
430 c->Nh++; 295 c->Nh++;
431 c->Nh+=(len>>29); 296 c->Nh+=(len>>29); /* might cause compiler warning on 16-bit */
432 c->Nl=l; 297 c->Nl=l;
433 298
434 if (c->num != 0) 299 n = c->num;
300 if (n != 0)
435 { 301 {
436 p=c->data; 302 p=(unsigned char *)c->data;
437 sw=c->num>>2;
438 sc=c->num&0x03;
439 303
440 if ((c->num+len) >= HASH_CBLOCK) 304 if ((n+len) >= HASH_CBLOCK)
441 { 305 {
442 l=p[sw]; HOST_p_c2l(data,l,sc); p[sw++]=l; 306 memcpy (p+n,data,HASH_CBLOCK-n);
443 for (; sw<HASH_LBLOCK; sw++) 307 HASH_BLOCK_DATA_ORDER (c,p,1);
444 { 308 n = HASH_CBLOCK-n;
445 HOST_c2l(data,l); p[sw]=l; 309 data += n;
446 } 310 len -= n;
447 HASH_BLOCK_HOST_ORDER (c,p,1); 311 c->num = 0;
448 len-=(HASH_CBLOCK-c->num); 312 memset (p,0,HASH_CBLOCK); /* keep it zeroed */
449 c->num=0;
450 /* drop through and do the rest */
451 } 313 }
452 else 314 else
453 { 315 {
454 c->num+=len; 316 memcpy (p+n,data,len);
455 if ((sc+len) < 4) /* ugly, add char's to a word */ 317 c->num += (unsigned int)len;
456 {
457 l=p[sw]; HOST_p_c2l_p(data,l,sc,len); p[sw]=l;
458 }
459 else
460 {
461 ew=(c->num>>2);
462 ec=(c->num&0x03);
463 if (sc)
464 l=p[sw];
465 HOST_p_c2l(data,l,sc);
466 p[sw++]=l;
467 for (; sw < ew; sw++)
468 {
469 HOST_c2l(data,l); p[sw]=l;
470 }
471 if (ec)
472 {
473 HOST_c2l_p(data,l,ec); p[sw]=l;
474 }
475 }
476 return 1; 318 return 1;
477 } 319 }
478 } 320 }
479 321
480 sw=len/HASH_CBLOCK; 322 n = len/HASH_CBLOCK;
481 if (sw > 0) 323 if (n > 0)
482 { 324 {
483#if defined(HASH_BLOCK_DATA_ORDER_ALIGNED) 325 HASH_BLOCK_DATA_ORDER (c,data,n);
484 /* 326 n *= HASH_CBLOCK;
485 * Note that HASH_BLOCK_DATA_ORDER_ALIGNED gets defined 327 data += n;
486 * only if sizeof(HASH_LONG)==4. 328 len -= n;
487 */
488 if ((((unsigned long)data)%4) == 0)
489 {
490 /* data is properly aligned so that we can cast it: */
491 HASH_BLOCK_DATA_ORDER_ALIGNED (c,(HASH_LONG *)data,sw);
492 sw*=HASH_CBLOCK;
493 data+=sw;
494 len-=sw;
495 }
496 else
497#if !defined(HASH_BLOCK_DATA_ORDER)
498 while (sw--)
499 {
500 memcpy (p=c->data,data,HASH_CBLOCK);
501 HASH_BLOCK_DATA_ORDER_ALIGNED(c,p,1);
502 data+=HASH_CBLOCK;
503 len-=HASH_CBLOCK;
504 }
505#endif
506#endif
507#if defined(HASH_BLOCK_DATA_ORDER)
508 {
509 HASH_BLOCK_DATA_ORDER(c,data,sw);
510 sw*=HASH_CBLOCK;
511 data+=sw;
512 len-=sw;
513 }
514#endif
515 } 329 }
516 330
517 if (len!=0) 331 if (len != 0)
518 { 332 {
519 p = c->data; 333 p = (unsigned char *)c->data;
520 c->num = len; 334 c->num = len;
521 ew=len>>2; /* words to copy */ 335 memcpy (p,data,len);
522 ec=len&0x03;
523 for (; ew; ew--,p++)
524 {
525 HOST_c2l(data,l); *p=l;
526 }
527 HOST_c2l_p(data,l,ec);
528 *p=l;
529 } 336 }
530 return 1; 337 return 1;
531 } 338 }
@@ -533,81 +340,38 @@ int HASH_UPDATE (HASH_CTX *c, const void *data_, unsigned long len)
533 340
534void HASH_TRANSFORM (HASH_CTX *c, const unsigned char *data) 341void HASH_TRANSFORM (HASH_CTX *c, const unsigned char *data)
535 { 342 {
536#if defined(HASH_BLOCK_DATA_ORDER_ALIGNED)
537 if ((((unsigned long)data)%4) == 0)
538 /* data is properly aligned so that we can cast it: */
539 HASH_BLOCK_DATA_ORDER_ALIGNED (c,(HASH_LONG *)data,1);
540 else
541#if !defined(HASH_BLOCK_DATA_ORDER)
542 {
543 memcpy (c->data,data,HASH_CBLOCK);
544 HASH_BLOCK_DATA_ORDER_ALIGNED (c,c->data,1);
545 }
546#endif
547#endif
548#if defined(HASH_BLOCK_DATA_ORDER)
549 HASH_BLOCK_DATA_ORDER (c,data,1); 343 HASH_BLOCK_DATA_ORDER (c,data,1);
550#endif
551 } 344 }
552 345
553 346
554int HASH_FINAL (unsigned char *md, HASH_CTX *c) 347int HASH_FINAL (unsigned char *md, HASH_CTX *c)
555 { 348 {
556 register HASH_LONG *p; 349 unsigned char *p = (unsigned char *)c->data;
557 register unsigned long l; 350 size_t n = c->num;
558 register int i,j;
559 static const unsigned char end[4]={0x80,0x00,0x00,0x00};
560 const unsigned char *cp=end;
561
562#if 0
563 if(FIPS_mode() && !FIPS_md5_allowed())
564 {
565 FIPSerr(FIPS_F_HASH_FINAL,FIPS_R_NON_FIPS_METHOD);
566 return 0;
567 }
568#endif
569 351
570 /* c->num should definitly have room for at least one more byte. */ 352 p[n] = 0x80; /* there is always room for one */
571 p=c->data; 353 n++;
572 i=c->num>>2;
573 j=c->num&0x03;
574
575#if 0
576 /* purify often complains about the following line as an
577 * Uninitialized Memory Read. While this can be true, the
578 * following p_c2l macro will reset l when that case is true.
579 * This is because j&0x03 contains the number of 'valid' bytes
580 * already in p[i]. If and only if j&0x03 == 0, the UMR will
581 * occur but this is also the only time p_c2l will do
582 * l= *(cp++) instead of l|= *(cp++)
583 * Many thanks to Alex Tang <altitude@cic.net> for pickup this
584 * 'potential bug' */
585#ifdef PURIFY
586 if (j==0) p[i]=0; /* Yeah, but that's not the way to fix it:-) */
587#endif
588 l=p[i];
589#else
590 l = (j==0) ? 0 : p[i];
591#endif
592 HOST_p_c2l(cp,l,j); p[i++]=l; /* i is the next 'undefined word' */
593 354
594 if (i>(HASH_LBLOCK-2)) /* save room for Nl and Nh */ 355 if (n > (HASH_CBLOCK-8))
595 { 356 {
596 if (i<HASH_LBLOCK) p[i]=0; 357 memset (p+n,0,HASH_CBLOCK-n);
597 HASH_BLOCK_HOST_ORDER (c,p,1); 358 n=0;
598 i=0; 359 HASH_BLOCK_DATA_ORDER (c,p,1);
599 } 360 }
600 for (; i<(HASH_LBLOCK-2); i++) 361 memset (p+n,0,HASH_CBLOCK-8-n);
601 p[i]=0;
602 362
363 p += HASH_CBLOCK-8;
603#if defined(DATA_ORDER_IS_BIG_ENDIAN) 364#if defined(DATA_ORDER_IS_BIG_ENDIAN)
604 p[HASH_LBLOCK-2]=c->Nh; 365 (void)HOST_l2c(c->Nh,p);
605 p[HASH_LBLOCK-1]=c->Nl; 366 (void)HOST_l2c(c->Nl,p);
606#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN) 367#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
607 p[HASH_LBLOCK-2]=c->Nl; 368 (void)HOST_l2c(c->Nl,p);
608 p[HASH_LBLOCK-1]=c->Nh; 369 (void)HOST_l2c(c->Nh,p);
609#endif 370#endif
610 HASH_BLOCK_HOST_ORDER (c,p,1); 371 p -= HASH_CBLOCK;
372 HASH_BLOCK_DATA_ORDER (c,p,1);
373 c->num=0;
374 memset (p,0,HASH_CBLOCK);
611 375
612#ifndef HASH_MAKE_STRING 376#ifndef HASH_MAKE_STRING
613#error "HASH_MAKE_STRING must be defined!" 377#error "HASH_MAKE_STRING must be defined!"
@@ -615,11 +379,6 @@ int HASH_FINAL (unsigned char *md, HASH_CTX *c)
615 HASH_MAKE_STRING(c,md); 379 HASH_MAKE_STRING(c,md);
616#endif 380#endif
617 381
618 c->num=0;
619 /* clear stuff, HASH_BLOCK may be leaving some stuff on the stack
620 * but I'm not worried :-)
621 OPENSSL_cleanse((void *)c,sizeof(HASH_CTX));
622 */
623 return 1; 382 return 1;
624 } 383 }
625 384
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