1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Utility routines.
|
---|
4 | *
|
---|
5 | * Copyright (C) 2010 Denys Vlasenko
|
---|
6 | *
|
---|
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
8 | */
|
---|
9 |
|
---|
10 | #include "libbb.h"
|
---|
11 |
|
---|
12 | /* gcc 4.2.1 optimizes rotr64 better with inline than with macro
|
---|
13 | * (for rotX32, there is no difference). Why? My guess is that
|
---|
14 | * macro requires clever common subexpression elimination heuristics
|
---|
15 | * in gcc, while inline basically forces it to happen.
|
---|
16 | */
|
---|
17 | //#define rotl32(x,n) (((x) << (n)) | ((x) >> (32 - (n))))
|
---|
18 | static ALWAYS_INLINE uint32_t rotl32(uint32_t x, unsigned n)
|
---|
19 | {
|
---|
20 | return (x << n) | (x >> (32 - n));
|
---|
21 | }
|
---|
22 | //#define rotr32(x,n) (((x) >> (n)) | ((x) << (32 - (n))))
|
---|
23 | static ALWAYS_INLINE uint32_t rotr32(uint32_t x, unsigned n)
|
---|
24 | {
|
---|
25 | return (x >> n) | (x << (32 - n));
|
---|
26 | }
|
---|
27 | /* rotr64 in needed for sha512 only: */
|
---|
28 | //#define rotr64(x,n) (((x) >> (n)) | ((x) << (64 - (n))))
|
---|
29 | static ALWAYS_INLINE uint64_t rotr64(uint64_t x, unsigned n)
|
---|
30 | {
|
---|
31 | return (x >> n) | (x << (64 - n));
|
---|
32 | }
|
---|
33 |
|
---|
34 |
|
---|
35 | /* Feed data through a temporary buffer.
|
---|
36 | * The internal buffer remembers previous data until it has 64
|
---|
37 | * bytes worth to pass on.
|
---|
38 | */
|
---|
39 | static void FAST_FUNC common64_hash(md5_ctx_t *ctx, const void *buffer, size_t len)
|
---|
40 | {
|
---|
41 | unsigned bufpos = ctx->total64 & 63;
|
---|
42 |
|
---|
43 | ctx->total64 += len;
|
---|
44 |
|
---|
45 | while (1) {
|
---|
46 | unsigned remaining = 64 - bufpos;
|
---|
47 | if (remaining > len)
|
---|
48 | remaining = len;
|
---|
49 | /* Copy data into aligned buffer */
|
---|
50 | memcpy(ctx->wbuffer + bufpos, buffer, remaining);
|
---|
51 | len -= remaining;
|
---|
52 | buffer = (const char *)buffer + remaining;
|
---|
53 | bufpos += remaining;
|
---|
54 | /* clever way to do "if (bufpos != 64) break; ... ; bufpos = 0;" */
|
---|
55 | bufpos -= 64;
|
---|
56 | if (bufpos != 0)
|
---|
57 | break;
|
---|
58 | /* Buffer is filled up, process it */
|
---|
59 | ctx->process_block(ctx);
|
---|
60 | /*bufpos = 0; - already is */
|
---|
61 | }
|
---|
62 | }
|
---|
63 |
|
---|
64 | /* Process the remaining bytes in the buffer */
|
---|
65 | static void FAST_FUNC common64_end(md5_ctx_t *ctx, int swap_needed)
|
---|
66 | {
|
---|
67 | unsigned bufpos = ctx->total64 & 63;
|
---|
68 | /* Pad the buffer to the next 64-byte boundary with 0x80,0,0,0... */
|
---|
69 | ctx->wbuffer[bufpos++] = 0x80;
|
---|
70 |
|
---|
71 | /* This loop iterates either once or twice, no more, no less */
|
---|
72 | while (1) {
|
---|
73 | unsigned remaining = 64 - bufpos;
|
---|
74 | memset(ctx->wbuffer + bufpos, 0, remaining);
|
---|
75 | /* Do we have enough space for the length count? */
|
---|
76 | if (remaining >= 8) {
|
---|
77 | /* Store the 64-bit counter of bits in the buffer */
|
---|
78 | uint64_t t = ctx->total64 << 3;
|
---|
79 | if (swap_needed)
|
---|
80 | t = bb_bswap_64(t);
|
---|
81 | /* wbuffer is suitably aligned for this */
|
---|
82 | *(uint64_t *) (&ctx->wbuffer[64 - 8]) = t;
|
---|
83 | }
|
---|
84 | ctx->process_block(ctx);
|
---|
85 | if (remaining >= 8)
|
---|
86 | break;
|
---|
87 | bufpos = 0;
|
---|
88 | }
|
---|
89 | }
|
---|
90 |
|
---|
91 |
|
---|
92 | /*
|
---|
93 | * Compute MD5 checksum of strings according to the
|
---|
94 | * definition of MD5 in RFC 1321 from April 1992.
|
---|
95 | *
|
---|
96 | * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
|
---|
97 | *
|
---|
98 | * Copyright (C) 1995-1999 Free Software Foundation, Inc.
|
---|
99 | * Copyright (C) 2001 Manuel Novoa III
|
---|
100 | * Copyright (C) 2003 Glenn L. McGrath
|
---|
101 | * Copyright (C) 2003 Erik Andersen
|
---|
102 | *
|
---|
103 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
104 | */
|
---|
105 |
|
---|
106 | /* 0: fastest, 3: smallest */
|
---|
107 | #if CONFIG_MD5_SIZE_VS_SPEED < 0
|
---|
108 | # define MD5_SIZE_VS_SPEED 0
|
---|
109 | #elif CONFIG_MD5_SIZE_VS_SPEED > 3
|
---|
110 | # define MD5_SIZE_VS_SPEED 3
|
---|
111 | #else
|
---|
112 | # define MD5_SIZE_VS_SPEED CONFIG_MD5_SIZE_VS_SPEED
|
---|
113 | #endif
|
---|
114 |
|
---|
115 | /* These are the four functions used in the four steps of the MD5 algorithm
|
---|
116 | * and defined in the RFC 1321. The first function is a little bit optimized
|
---|
117 | * (as found in Colin Plumbs public domain implementation).
|
---|
118 | * #define FF(b, c, d) ((b & c) | (~b & d))
|
---|
119 | */
|
---|
120 | #undef FF
|
---|
121 | #undef FG
|
---|
122 | #undef FH
|
---|
123 | #undef FI
|
---|
124 | #define FF(b, c, d) (d ^ (b & (c ^ d)))
|
---|
125 | #define FG(b, c, d) FF(d, b, c)
|
---|
126 | #define FH(b, c, d) (b ^ c ^ d)
|
---|
127 | #define FI(b, c, d) (c ^ (b | ~d))
|
---|
128 |
|
---|
129 | /* Hash a single block, 64 bytes long and 4-byte aligned */
|
---|
130 | static void FAST_FUNC md5_process_block64(md5_ctx_t *ctx)
|
---|
131 | {
|
---|
132 | #if MD5_SIZE_VS_SPEED > 0
|
---|
133 | /* Before we start, one word to the strange constants.
|
---|
134 | They are defined in RFC 1321 as
|
---|
135 | T[i] = (int)(4294967296.0 * fabs(sin(i))), i=1..64
|
---|
136 | */
|
---|
137 | static const uint32_t C_array[] = {
|
---|
138 | /* round 1 */
|
---|
139 | 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
|
---|
140 | 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
|
---|
141 | 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
|
---|
142 | 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
|
---|
143 | /* round 2 */
|
---|
144 | 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
|
---|
145 | 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
|
---|
146 | 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
|
---|
147 | 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
|
---|
148 | /* round 3 */
|
---|
149 | 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
|
---|
150 | 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
|
---|
151 | 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
|
---|
152 | 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
|
---|
153 | /* round 4 */
|
---|
154 | 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
|
---|
155 | 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
|
---|
156 | 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
|
---|
157 | 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
|
---|
158 | };
|
---|
159 | static const char P_array[] ALIGN1 = {
|
---|
160 | # if MD5_SIZE_VS_SPEED > 1
|
---|
161 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
|
---|
162 | # endif
|
---|
163 | 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
|
---|
164 | 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
|
---|
165 | 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
|
---|
166 | };
|
---|
167 | #endif
|
---|
168 | uint32_t *words = (void*) ctx->wbuffer;
|
---|
169 | uint32_t A = ctx->hash[0];
|
---|
170 | uint32_t B = ctx->hash[1];
|
---|
171 | uint32_t C = ctx->hash[2];
|
---|
172 | uint32_t D = ctx->hash[3];
|
---|
173 |
|
---|
174 | #if MD5_SIZE_VS_SPEED >= 2 /* 2 or 3 */
|
---|
175 |
|
---|
176 | static const char S_array[] ALIGN1 = {
|
---|
177 | 7, 12, 17, 22,
|
---|
178 | 5, 9, 14, 20,
|
---|
179 | 4, 11, 16, 23,
|
---|
180 | 6, 10, 15, 21
|
---|
181 | };
|
---|
182 | const uint32_t *pc;
|
---|
183 | const char *pp;
|
---|
184 | const char *ps;
|
---|
185 | int i;
|
---|
186 | uint32_t temp;
|
---|
187 |
|
---|
188 | # if BB_BIG_ENDIAN
|
---|
189 | for (i = 0; i < 16; i++)
|
---|
190 | words[i] = SWAP_LE32(words[i]);
|
---|
191 | # endif
|
---|
192 |
|
---|
193 | # if MD5_SIZE_VS_SPEED == 3
|
---|
194 | pc = C_array;
|
---|
195 | pp = P_array;
|
---|
196 | ps = S_array - 4;
|
---|
197 |
|
---|
198 | for (i = 0; i < 64; i++) {
|
---|
199 | if ((i & 0x0f) == 0)
|
---|
200 | ps += 4;
|
---|
201 | temp = A;
|
---|
202 | switch (i >> 4) {
|
---|
203 | case 0:
|
---|
204 | temp += FF(B, C, D);
|
---|
205 | break;
|
---|
206 | case 1:
|
---|
207 | temp += FG(B, C, D);
|
---|
208 | break;
|
---|
209 | case 2:
|
---|
210 | temp += FH(B, C, D);
|
---|
211 | break;
|
---|
212 | case 3:
|
---|
213 | temp += FI(B, C, D);
|
---|
214 | }
|
---|
215 | temp += words[(int) (*pp++)] + *pc++;
|
---|
216 | temp = rotl32(temp, ps[i & 3]);
|
---|
217 | temp += B;
|
---|
218 | A = D;
|
---|
219 | D = C;
|
---|
220 | C = B;
|
---|
221 | B = temp;
|
---|
222 | }
|
---|
223 | # else /* MD5_SIZE_VS_SPEED == 2 */
|
---|
224 | pc = C_array;
|
---|
225 | pp = P_array;
|
---|
226 | ps = S_array;
|
---|
227 |
|
---|
228 | for (i = 0; i < 16; i++) {
|
---|
229 | temp = A + FF(B, C, D) + words[(int) (*pp++)] + *pc++;
|
---|
230 | temp = rotl32(temp, ps[i & 3]);
|
---|
231 | temp += B;
|
---|
232 | A = D;
|
---|
233 | D = C;
|
---|
234 | C = B;
|
---|
235 | B = temp;
|
---|
236 | }
|
---|
237 | ps += 4;
|
---|
238 | for (i = 0; i < 16; i++) {
|
---|
239 | temp = A + FG(B, C, D) + words[(int) (*pp++)] + *pc++;
|
---|
240 | temp = rotl32(temp, ps[i & 3]);
|
---|
241 | temp += B;
|
---|
242 | A = D;
|
---|
243 | D = C;
|
---|
244 | C = B;
|
---|
245 | B = temp;
|
---|
246 | }
|
---|
247 | ps += 4;
|
---|
248 | for (i = 0; i < 16; i++) {
|
---|
249 | temp = A + FH(B, C, D) + words[(int) (*pp++)] + *pc++;
|
---|
250 | temp = rotl32(temp, ps[i & 3]);
|
---|
251 | temp += B;
|
---|
252 | A = D;
|
---|
253 | D = C;
|
---|
254 | C = B;
|
---|
255 | B = temp;
|
---|
256 | }
|
---|
257 | ps += 4;
|
---|
258 | for (i = 0; i < 16; i++) {
|
---|
259 | temp = A + FI(B, C, D) + words[(int) (*pp++)] + *pc++;
|
---|
260 | temp = rotl32(temp, ps[i & 3]);
|
---|
261 | temp += B;
|
---|
262 | A = D;
|
---|
263 | D = C;
|
---|
264 | C = B;
|
---|
265 | B = temp;
|
---|
266 | }
|
---|
267 | # endif
|
---|
268 | /* Add checksum to the starting values */
|
---|
269 | ctx->hash[0] += A;
|
---|
270 | ctx->hash[1] += B;
|
---|
271 | ctx->hash[2] += C;
|
---|
272 | ctx->hash[3] += D;
|
---|
273 |
|
---|
274 | #else /* MD5_SIZE_VS_SPEED == 0 or 1 */
|
---|
275 |
|
---|
276 | uint32_t A_save = A;
|
---|
277 | uint32_t B_save = B;
|
---|
278 | uint32_t C_save = C;
|
---|
279 | uint32_t D_save = D;
|
---|
280 | # if MD5_SIZE_VS_SPEED == 1
|
---|
281 | const uint32_t *pc;
|
---|
282 | const char *pp;
|
---|
283 | int i;
|
---|
284 | # endif
|
---|
285 |
|
---|
286 | /* First round: using the given function, the context and a constant
|
---|
287 | the next context is computed. Because the algorithm's processing
|
---|
288 | unit is a 32-bit word and it is determined to work on words in
|
---|
289 | little endian byte order we perhaps have to change the byte order
|
---|
290 | before the computation. To reduce the work for the next steps
|
---|
291 | we save swapped words in WORDS array. */
|
---|
292 | # undef OP
|
---|
293 | # define OP(a, b, c, d, s, T) \
|
---|
294 | do { \
|
---|
295 | a += FF(b, c, d) + (*words IF_BIG_ENDIAN(= SWAP_LE32(*words))) + T; \
|
---|
296 | words++; \
|
---|
297 | a = rotl32(a, s); \
|
---|
298 | a += b; \
|
---|
299 | } while (0)
|
---|
300 |
|
---|
301 | /* Round 1 */
|
---|
302 | # if MD5_SIZE_VS_SPEED == 1
|
---|
303 | pc = C_array;
|
---|
304 | for (i = 0; i < 4; i++) {
|
---|
305 | OP(A, B, C, D, 7, *pc++);
|
---|
306 | OP(D, A, B, C, 12, *pc++);
|
---|
307 | OP(C, D, A, B, 17, *pc++);
|
---|
308 | OP(B, C, D, A, 22, *pc++);
|
---|
309 | }
|
---|
310 | # else
|
---|
311 | OP(A, B, C, D, 7, 0xd76aa478);
|
---|
312 | OP(D, A, B, C, 12, 0xe8c7b756);
|
---|
313 | OP(C, D, A, B, 17, 0x242070db);
|
---|
314 | OP(B, C, D, A, 22, 0xc1bdceee);
|
---|
315 | OP(A, B, C, D, 7, 0xf57c0faf);
|
---|
316 | OP(D, A, B, C, 12, 0x4787c62a);
|
---|
317 | OP(C, D, A, B, 17, 0xa8304613);
|
---|
318 | OP(B, C, D, A, 22, 0xfd469501);
|
---|
319 | OP(A, B, C, D, 7, 0x698098d8);
|
---|
320 | OP(D, A, B, C, 12, 0x8b44f7af);
|
---|
321 | OP(C, D, A, B, 17, 0xffff5bb1);
|
---|
322 | OP(B, C, D, A, 22, 0x895cd7be);
|
---|
323 | OP(A, B, C, D, 7, 0x6b901122);
|
---|
324 | OP(D, A, B, C, 12, 0xfd987193);
|
---|
325 | OP(C, D, A, B, 17, 0xa679438e);
|
---|
326 | OP(B, C, D, A, 22, 0x49b40821);
|
---|
327 | # endif
|
---|
328 | words -= 16;
|
---|
329 |
|
---|
330 | /* For the second to fourth round we have the possibly swapped words
|
---|
331 | in WORDS. Redefine the macro to take an additional first
|
---|
332 | argument specifying the function to use. */
|
---|
333 | # undef OP
|
---|
334 | # define OP(f, a, b, c, d, k, s, T) \
|
---|
335 | do { \
|
---|
336 | a += f(b, c, d) + words[k] + T; \
|
---|
337 | a = rotl32(a, s); \
|
---|
338 | a += b; \
|
---|
339 | } while (0)
|
---|
340 |
|
---|
341 | /* Round 2 */
|
---|
342 | # if MD5_SIZE_VS_SPEED == 1
|
---|
343 | pp = P_array;
|
---|
344 | for (i = 0; i < 4; i++) {
|
---|
345 | OP(FG, A, B, C, D, (int) (*pp++), 5, *pc++);
|
---|
346 | OP(FG, D, A, B, C, (int) (*pp++), 9, *pc++);
|
---|
347 | OP(FG, C, D, A, B, (int) (*pp++), 14, *pc++);
|
---|
348 | OP(FG, B, C, D, A, (int) (*pp++), 20, *pc++);
|
---|
349 | }
|
---|
350 | # else
|
---|
351 | OP(FG, A, B, C, D, 1, 5, 0xf61e2562);
|
---|
352 | OP(FG, D, A, B, C, 6, 9, 0xc040b340);
|
---|
353 | OP(FG, C, D, A, B, 11, 14, 0x265e5a51);
|
---|
354 | OP(FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
|
---|
355 | OP(FG, A, B, C, D, 5, 5, 0xd62f105d);
|
---|
356 | OP(FG, D, A, B, C, 10, 9, 0x02441453);
|
---|
357 | OP(FG, C, D, A, B, 15, 14, 0xd8a1e681);
|
---|
358 | OP(FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
|
---|
359 | OP(FG, A, B, C, D, 9, 5, 0x21e1cde6);
|
---|
360 | OP(FG, D, A, B, C, 14, 9, 0xc33707d6);
|
---|
361 | OP(FG, C, D, A, B, 3, 14, 0xf4d50d87);
|
---|
362 | OP(FG, B, C, D, A, 8, 20, 0x455a14ed);
|
---|
363 | OP(FG, A, B, C, D, 13, 5, 0xa9e3e905);
|
---|
364 | OP(FG, D, A, B, C, 2, 9, 0xfcefa3f8);
|
---|
365 | OP(FG, C, D, A, B, 7, 14, 0x676f02d9);
|
---|
366 | OP(FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
|
---|
367 | # endif
|
---|
368 |
|
---|
369 | /* Round 3 */
|
---|
370 | # if MD5_SIZE_VS_SPEED == 1
|
---|
371 | for (i = 0; i < 4; i++) {
|
---|
372 | OP(FH, A, B, C, D, (int) (*pp++), 4, *pc++);
|
---|
373 | OP(FH, D, A, B, C, (int) (*pp++), 11, *pc++);
|
---|
374 | OP(FH, C, D, A, B, (int) (*pp++), 16, *pc++);
|
---|
375 | OP(FH, B, C, D, A, (int) (*pp++), 23, *pc++);
|
---|
376 | }
|
---|
377 | # else
|
---|
378 | OP(FH, A, B, C, D, 5, 4, 0xfffa3942);
|
---|
379 | OP(FH, D, A, B, C, 8, 11, 0x8771f681);
|
---|
380 | OP(FH, C, D, A, B, 11, 16, 0x6d9d6122);
|
---|
381 | OP(FH, B, C, D, A, 14, 23, 0xfde5380c);
|
---|
382 | OP(FH, A, B, C, D, 1, 4, 0xa4beea44);
|
---|
383 | OP(FH, D, A, B, C, 4, 11, 0x4bdecfa9);
|
---|
384 | OP(FH, C, D, A, B, 7, 16, 0xf6bb4b60);
|
---|
385 | OP(FH, B, C, D, A, 10, 23, 0xbebfbc70);
|
---|
386 | OP(FH, A, B, C, D, 13, 4, 0x289b7ec6);
|
---|
387 | OP(FH, D, A, B, C, 0, 11, 0xeaa127fa);
|
---|
388 | OP(FH, C, D, A, B, 3, 16, 0xd4ef3085);
|
---|
389 | OP(FH, B, C, D, A, 6, 23, 0x04881d05);
|
---|
390 | OP(FH, A, B, C, D, 9, 4, 0xd9d4d039);
|
---|
391 | OP(FH, D, A, B, C, 12, 11, 0xe6db99e5);
|
---|
392 | OP(FH, C, D, A, B, 15, 16, 0x1fa27cf8);
|
---|
393 | OP(FH, B, C, D, A, 2, 23, 0xc4ac5665);
|
---|
394 | # endif
|
---|
395 |
|
---|
396 | /* Round 4 */
|
---|
397 | # if MD5_SIZE_VS_SPEED == 1
|
---|
398 | for (i = 0; i < 4; i++) {
|
---|
399 | OP(FI, A, B, C, D, (int) (*pp++), 6, *pc++);
|
---|
400 | OP(FI, D, A, B, C, (int) (*pp++), 10, *pc++);
|
---|
401 | OP(FI, C, D, A, B, (int) (*pp++), 15, *pc++);
|
---|
402 | OP(FI, B, C, D, A, (int) (*pp++), 21, *pc++);
|
---|
403 | }
|
---|
404 | # else
|
---|
405 | OP(FI, A, B, C, D, 0, 6, 0xf4292244);
|
---|
406 | OP(FI, D, A, B, C, 7, 10, 0x432aff97);
|
---|
407 | OP(FI, C, D, A, B, 14, 15, 0xab9423a7);
|
---|
408 | OP(FI, B, C, D, A, 5, 21, 0xfc93a039);
|
---|
409 | OP(FI, A, B, C, D, 12, 6, 0x655b59c3);
|
---|
410 | OP(FI, D, A, B, C, 3, 10, 0x8f0ccc92);
|
---|
411 | OP(FI, C, D, A, B, 10, 15, 0xffeff47d);
|
---|
412 | OP(FI, B, C, D, A, 1, 21, 0x85845dd1);
|
---|
413 | OP(FI, A, B, C, D, 8, 6, 0x6fa87e4f);
|
---|
414 | OP(FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
|
---|
415 | OP(FI, C, D, A, B, 6, 15, 0xa3014314);
|
---|
416 | OP(FI, B, C, D, A, 13, 21, 0x4e0811a1);
|
---|
417 | OP(FI, A, B, C, D, 4, 6, 0xf7537e82);
|
---|
418 | OP(FI, D, A, B, C, 11, 10, 0xbd3af235);
|
---|
419 | OP(FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
|
---|
420 | OP(FI, B, C, D, A, 9, 21, 0xeb86d391);
|
---|
421 | # undef OP
|
---|
422 | # endif
|
---|
423 | /* Add checksum to the starting values */
|
---|
424 | ctx->hash[0] = A_save + A;
|
---|
425 | ctx->hash[1] = B_save + B;
|
---|
426 | ctx->hash[2] = C_save + C;
|
---|
427 | ctx->hash[3] = D_save + D;
|
---|
428 | #endif
|
---|
429 | }
|
---|
430 | #undef FF
|
---|
431 | #undef FG
|
---|
432 | #undef FH
|
---|
433 | #undef FI
|
---|
434 |
|
---|
435 | /* Initialize structure containing state of computation.
|
---|
436 | * (RFC 1321, 3.3: Step 3)
|
---|
437 | */
|
---|
438 | void FAST_FUNC md5_begin(md5_ctx_t *ctx)
|
---|
439 | {
|
---|
440 | ctx->hash[0] = 0x67452301;
|
---|
441 | ctx->hash[1] = 0xefcdab89;
|
---|
442 | ctx->hash[2] = 0x98badcfe;
|
---|
443 | ctx->hash[3] = 0x10325476;
|
---|
444 | ctx->total64 = 0;
|
---|
445 | ctx->process_block = md5_process_block64;
|
---|
446 | }
|
---|
447 |
|
---|
448 | /* Used also for sha1 and sha256 */
|
---|
449 | void FAST_FUNC md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len)
|
---|
450 | {
|
---|
451 | common64_hash(ctx, buffer, len);
|
---|
452 | }
|
---|
453 |
|
---|
454 | /* Process the remaining bytes in the buffer and put result from CTX
|
---|
455 | * in first 16 bytes following RESBUF. The result is always in little
|
---|
456 | * endian byte order, so that a byte-wise output yields to the wanted
|
---|
457 | * ASCII representation of the message digest.
|
---|
458 | */
|
---|
459 | void FAST_FUNC md5_end(md5_ctx_t *ctx, void *resbuf)
|
---|
460 | {
|
---|
461 | /* MD5 stores total in LE, need to swap on BE arches: */
|
---|
462 | common64_end(ctx, /*swap_needed:*/ BB_BIG_ENDIAN);
|
---|
463 |
|
---|
464 | /* The MD5 result is in little endian byte order */
|
---|
465 | #if BB_BIG_ENDIAN
|
---|
466 | ctx->hash[0] = SWAP_LE32(ctx->hash[0]);
|
---|
467 | ctx->hash[1] = SWAP_LE32(ctx->hash[1]);
|
---|
468 | ctx->hash[2] = SWAP_LE32(ctx->hash[2]);
|
---|
469 | ctx->hash[3] = SWAP_LE32(ctx->hash[3]);
|
---|
470 | #endif
|
---|
471 | memcpy(resbuf, ctx->hash, sizeof(ctx->hash[0]) * 4);
|
---|
472 | }
|
---|
473 |
|
---|
474 |
|
---|
475 | /*
|
---|
476 | * SHA1 part is:
|
---|
477 | * Copyright 2007 Rob Landley <rob@landley.net>
|
---|
478 | *
|
---|
479 | * Based on the public domain SHA-1 in C by Steve Reid <steve@edmweb.com>
|
---|
480 | * from http://www.mirrors.wiretapped.net/security/cryptography/hashes/sha1/
|
---|
481 | *
|
---|
482 | * Licensed under GPLv2, see file LICENSE in this source tree.
|
---|
483 | *
|
---|
484 | * ---------------------------------------------------------------------------
|
---|
485 | *
|
---|
486 | * SHA256 and SHA512 parts are:
|
---|
487 | * Released into the Public Domain by Ulrich Drepper <drepper@redhat.com>.
|
---|
488 | * Shrank by Denys Vlasenko.
|
---|
489 | *
|
---|
490 | * ---------------------------------------------------------------------------
|
---|
491 | *
|
---|
492 | * The best way to test random blocksizes is to go to coreutils/md5_sha1_sum.c
|
---|
493 | * and replace "4096" with something like "2000 + time(NULL) % 2097",
|
---|
494 | * then rebuild and compare "shaNNNsum bigfile" results.
|
---|
495 | */
|
---|
496 |
|
---|
497 | static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
|
---|
498 | {
|
---|
499 | static const uint32_t rconsts[] = {
|
---|
500 | 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6
|
---|
501 | };
|
---|
502 | int i, j;
|
---|
503 | int cnt;
|
---|
504 | uint32_t W[16+16];
|
---|
505 | uint32_t a, b, c, d, e;
|
---|
506 |
|
---|
507 | /* On-stack work buffer frees up one register in the main loop
|
---|
508 | * which otherwise will be needed to hold ctx pointer */
|
---|
509 | for (i = 0; i < 16; i++)
|
---|
510 | W[i] = W[i+16] = SWAP_BE32(((uint32_t*)ctx->wbuffer)[i]);
|
---|
511 |
|
---|
512 | a = ctx->hash[0];
|
---|
513 | b = ctx->hash[1];
|
---|
514 | c = ctx->hash[2];
|
---|
515 | d = ctx->hash[3];
|
---|
516 | e = ctx->hash[4];
|
---|
517 |
|
---|
518 | /* 4 rounds of 20 operations each */
|
---|
519 | cnt = 0;
|
---|
520 | for (i = 0; i < 4; i++) {
|
---|
521 | j = 19;
|
---|
522 | do {
|
---|
523 | uint32_t work;
|
---|
524 |
|
---|
525 | work = c ^ d;
|
---|
526 | if (i == 0) {
|
---|
527 | work = (work & b) ^ d;
|
---|
528 | if (j <= 3)
|
---|
529 | goto ge16;
|
---|
530 | /* Used to do SWAP_BE32 here, but this
|
---|
531 | * requires ctx (see comment above) */
|
---|
532 | work += W[cnt];
|
---|
533 | } else {
|
---|
534 | if (i == 2)
|
---|
535 | work = ((b | c) & d) | (b & c);
|
---|
536 | else /* i = 1 or 3 */
|
---|
537 | work ^= b;
|
---|
538 | ge16:
|
---|
539 | W[cnt] = W[cnt+16] = rotl32(W[cnt+13] ^ W[cnt+8] ^ W[cnt+2] ^ W[cnt], 1);
|
---|
540 | work += W[cnt];
|
---|
541 | }
|
---|
542 | work += e + rotl32(a, 5) + rconsts[i];
|
---|
543 |
|
---|
544 | /* Rotate by one for next time */
|
---|
545 | e = d;
|
---|
546 | d = c;
|
---|
547 | c = /* b = */ rotl32(b, 30);
|
---|
548 | b = a;
|
---|
549 | a = work;
|
---|
550 | cnt = (cnt + 1) & 15;
|
---|
551 | } while (--j >= 0);
|
---|
552 | }
|
---|
553 |
|
---|
554 | ctx->hash[0] += a;
|
---|
555 | ctx->hash[1] += b;
|
---|
556 | ctx->hash[2] += c;
|
---|
557 | ctx->hash[3] += d;
|
---|
558 | ctx->hash[4] += e;
|
---|
559 | }
|
---|
560 |
|
---|
561 | /* Constants for SHA512 from FIPS 180-2:4.2.3.
|
---|
562 | * SHA256 constants from FIPS 180-2:4.2.2
|
---|
563 | * are the most significant half of first 64 elements
|
---|
564 | * of the same array.
|
---|
565 | */
|
---|
566 | static const uint64_t sha_K[80] = {
|
---|
567 | 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
|
---|
568 | 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
|
---|
569 | 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
|
---|
570 | 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
|
---|
571 | 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
|
---|
572 | 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
|
---|
573 | 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
|
---|
574 | 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
|
---|
575 | 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
|
---|
576 | 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
|
---|
577 | 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
|
---|
578 | 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
|
---|
579 | 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
|
---|
580 | 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
|
---|
581 | 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
|
---|
582 | 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
|
---|
583 | 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
|
---|
584 | 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
|
---|
585 | 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
|
---|
586 | 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
|
---|
587 | 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
|
---|
588 | 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
|
---|
589 | 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
|
---|
590 | 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
|
---|
591 | 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
|
---|
592 | 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
|
---|
593 | 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
|
---|
594 | 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
|
---|
595 | 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
|
---|
596 | 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
|
---|
597 | 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
|
---|
598 | 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
|
---|
599 | 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, /* [64]+ are used for sha512 only */
|
---|
600 | 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
|
---|
601 | 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
|
---|
602 | 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
|
---|
603 | 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
|
---|
604 | 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
|
---|
605 | 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
|
---|
606 | 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
|
---|
607 | };
|
---|
608 |
|
---|
609 | #undef Ch
|
---|
610 | #undef Maj
|
---|
611 | #undef S0
|
---|
612 | #undef S1
|
---|
613 | #undef R0
|
---|
614 | #undef R1
|
---|
615 |
|
---|
616 | static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx)
|
---|
617 | {
|
---|
618 | unsigned t;
|
---|
619 | uint32_t W[64], a, b, c, d, e, f, g, h;
|
---|
620 | const uint32_t *words = (uint32_t*) ctx->wbuffer;
|
---|
621 |
|
---|
622 | /* Operators defined in FIPS 180-2:4.1.2. */
|
---|
623 | #define Ch(x, y, z) ((x & y) ^ (~x & z))
|
---|
624 | #define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
|
---|
625 | #define S0(x) (rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22))
|
---|
626 | #define S1(x) (rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25))
|
---|
627 | #define R0(x) (rotr32(x, 7) ^ rotr32(x, 18) ^ (x >> 3))
|
---|
628 | #define R1(x) (rotr32(x, 17) ^ rotr32(x, 19) ^ (x >> 10))
|
---|
629 |
|
---|
630 | /* Compute the message schedule according to FIPS 180-2:6.2.2 step 2. */
|
---|
631 | for (t = 0; t < 16; ++t)
|
---|
632 | W[t] = SWAP_BE32(words[t]);
|
---|
633 | for (/*t = 16*/; t < 64; ++t)
|
---|
634 | W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16];
|
---|
635 |
|
---|
636 | a = ctx->hash[0];
|
---|
637 | b = ctx->hash[1];
|
---|
638 | c = ctx->hash[2];
|
---|
639 | d = ctx->hash[3];
|
---|
640 | e = ctx->hash[4];
|
---|
641 | f = ctx->hash[5];
|
---|
642 | g = ctx->hash[6];
|
---|
643 | h = ctx->hash[7];
|
---|
644 |
|
---|
645 | /* The actual computation according to FIPS 180-2:6.2.2 step 3. */
|
---|
646 | for (t = 0; t < 64; ++t) {
|
---|
647 | /* Need to fetch upper half of sha_K[t]
|
---|
648 | * (I hope compiler is clever enough to just fetch
|
---|
649 | * upper half)
|
---|
650 | */
|
---|
651 | uint32_t K_t = sha_K[t] >> 32;
|
---|
652 | uint32_t T1 = h + S1(e) + Ch(e, f, g) + K_t + W[t];
|
---|
653 | uint32_t T2 = S0(a) + Maj(a, b, c);
|
---|
654 | h = g;
|
---|
655 | g = f;
|
---|
656 | f = e;
|
---|
657 | e = d + T1;
|
---|
658 | d = c;
|
---|
659 | c = b;
|
---|
660 | b = a;
|
---|
661 | a = T1 + T2;
|
---|
662 | }
|
---|
663 | #undef Ch
|
---|
664 | #undef Maj
|
---|
665 | #undef S0
|
---|
666 | #undef S1
|
---|
667 | #undef R0
|
---|
668 | #undef R1
|
---|
669 | /* Add the starting values of the context according to FIPS 180-2:6.2.2
|
---|
670 | step 4. */
|
---|
671 | ctx->hash[0] += a;
|
---|
672 | ctx->hash[1] += b;
|
---|
673 | ctx->hash[2] += c;
|
---|
674 | ctx->hash[3] += d;
|
---|
675 | ctx->hash[4] += e;
|
---|
676 | ctx->hash[5] += f;
|
---|
677 | ctx->hash[6] += g;
|
---|
678 | ctx->hash[7] += h;
|
---|
679 | }
|
---|
680 |
|
---|
681 | static void FAST_FUNC sha512_process_block128(sha512_ctx_t *ctx)
|
---|
682 | {
|
---|
683 | unsigned t;
|
---|
684 | uint64_t W[80];
|
---|
685 | /* On i386, having assignments here (not later as sha256 does)
|
---|
686 | * produces 99 bytes smaller code with gcc 4.3.1
|
---|
687 | */
|
---|
688 | uint64_t a = ctx->hash[0];
|
---|
689 | uint64_t b = ctx->hash[1];
|
---|
690 | uint64_t c = ctx->hash[2];
|
---|
691 | uint64_t d = ctx->hash[3];
|
---|
692 | uint64_t e = ctx->hash[4];
|
---|
693 | uint64_t f = ctx->hash[5];
|
---|
694 | uint64_t g = ctx->hash[6];
|
---|
695 | uint64_t h = ctx->hash[7];
|
---|
696 | const uint64_t *words = (uint64_t*) ctx->wbuffer;
|
---|
697 |
|
---|
698 | /* Operators defined in FIPS 180-2:4.1.2. */
|
---|
699 | #define Ch(x, y, z) ((x & y) ^ (~x & z))
|
---|
700 | #define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
|
---|
701 | #define S0(x) (rotr64(x, 28) ^ rotr64(x, 34) ^ rotr64(x, 39))
|
---|
702 | #define S1(x) (rotr64(x, 14) ^ rotr64(x, 18) ^ rotr64(x, 41))
|
---|
703 | #define R0(x) (rotr64(x, 1) ^ rotr64(x, 8) ^ (x >> 7))
|
---|
704 | #define R1(x) (rotr64(x, 19) ^ rotr64(x, 61) ^ (x >> 6))
|
---|
705 |
|
---|
706 | /* Compute the message schedule according to FIPS 180-2:6.3.2 step 2. */
|
---|
707 | for (t = 0; t < 16; ++t)
|
---|
708 | W[t] = SWAP_BE64(words[t]);
|
---|
709 | for (/*t = 16*/; t < 80; ++t)
|
---|
710 | W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16];
|
---|
711 |
|
---|
712 | /* The actual computation according to FIPS 180-2:6.3.2 step 3. */
|
---|
713 | for (t = 0; t < 80; ++t) {
|
---|
714 | uint64_t T1 = h + S1(e) + Ch(e, f, g) + sha_K[t] + W[t];
|
---|
715 | uint64_t T2 = S0(a) + Maj(a, b, c);
|
---|
716 | h = g;
|
---|
717 | g = f;
|
---|
718 | f = e;
|
---|
719 | e = d + T1;
|
---|
720 | d = c;
|
---|
721 | c = b;
|
---|
722 | b = a;
|
---|
723 | a = T1 + T2;
|
---|
724 | }
|
---|
725 | #undef Ch
|
---|
726 | #undef Maj
|
---|
727 | #undef S0
|
---|
728 | #undef S1
|
---|
729 | #undef R0
|
---|
730 | #undef R1
|
---|
731 | /* Add the starting values of the context according to FIPS 180-2:6.3.2
|
---|
732 | step 4. */
|
---|
733 | ctx->hash[0] += a;
|
---|
734 | ctx->hash[1] += b;
|
---|
735 | ctx->hash[2] += c;
|
---|
736 | ctx->hash[3] += d;
|
---|
737 | ctx->hash[4] += e;
|
---|
738 | ctx->hash[5] += f;
|
---|
739 | ctx->hash[6] += g;
|
---|
740 | ctx->hash[7] += h;
|
---|
741 | }
|
---|
742 |
|
---|
743 |
|
---|
744 | void FAST_FUNC sha1_begin(sha1_ctx_t *ctx)
|
---|
745 | {
|
---|
746 | ctx->hash[0] = 0x67452301;
|
---|
747 | ctx->hash[1] = 0xefcdab89;
|
---|
748 | ctx->hash[2] = 0x98badcfe;
|
---|
749 | ctx->hash[3] = 0x10325476;
|
---|
750 | ctx->hash[4] = 0xc3d2e1f0;
|
---|
751 | ctx->total64 = 0;
|
---|
752 | ctx->process_block = sha1_process_block64;
|
---|
753 | }
|
---|
754 |
|
---|
755 | static const uint32_t init256[] = {
|
---|
756 | 0,
|
---|
757 | 0,
|
---|
758 | 0x6a09e667,
|
---|
759 | 0xbb67ae85,
|
---|
760 | 0x3c6ef372,
|
---|
761 | 0xa54ff53a,
|
---|
762 | 0x510e527f,
|
---|
763 | 0x9b05688c,
|
---|
764 | 0x1f83d9ab,
|
---|
765 | 0x5be0cd19,
|
---|
766 | };
|
---|
767 | static const uint32_t init512_lo[] = {
|
---|
768 | 0,
|
---|
769 | 0,
|
---|
770 | 0xf3bcc908,
|
---|
771 | 0x84caa73b,
|
---|
772 | 0xfe94f82b,
|
---|
773 | 0x5f1d36f1,
|
---|
774 | 0xade682d1,
|
---|
775 | 0x2b3e6c1f,
|
---|
776 | 0xfb41bd6b,
|
---|
777 | 0x137e2179,
|
---|
778 | };
|
---|
779 |
|
---|
780 | /* Initialize structure containing state of computation.
|
---|
781 | (FIPS 180-2:5.3.2) */
|
---|
782 | void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
|
---|
783 | {
|
---|
784 | memcpy(&ctx->total64, init256, sizeof(init256));
|
---|
785 | /*ctx->total64 = 0; - done by prepending two 32-bit zeros to init256 */
|
---|
786 | ctx->process_block = sha256_process_block64;
|
---|
787 | }
|
---|
788 |
|
---|
789 | /* Initialize structure containing state of computation.
|
---|
790 | (FIPS 180-2:5.3.3) */
|
---|
791 | void FAST_FUNC sha512_begin(sha512_ctx_t *ctx)
|
---|
792 | {
|
---|
793 | int i;
|
---|
794 | /* Two extra iterations zero out ctx->total64[2] */
|
---|
795 | uint64_t *tp = ctx->total64;
|
---|
796 | for (i = 0; i < 2+8; i++)
|
---|
797 | tp[i] = ((uint64_t)(init256[i]) << 32) + init512_lo[i];
|
---|
798 | /*ctx->total64[0] = ctx->total64[1] = 0; - already done */
|
---|
799 | }
|
---|
800 |
|
---|
801 | void FAST_FUNC sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len)
|
---|
802 | {
|
---|
803 | unsigned bufpos = ctx->total64[0] & 127;
|
---|
804 | unsigned remaining;
|
---|
805 |
|
---|
806 | /* First increment the byte count. FIPS 180-2 specifies the possible
|
---|
807 | length of the file up to 2^128 _bits_.
|
---|
808 | We compute the number of _bytes_ and convert to bits later. */
|
---|
809 | ctx->total64[0] += len;
|
---|
810 | if (ctx->total64[0] < len)
|
---|
811 | ctx->total64[1]++;
|
---|
812 | #if 0
|
---|
813 | remaining = 128 - bufpos;
|
---|
814 |
|
---|
815 | /* Hash whole blocks */
|
---|
816 | while (len >= remaining) {
|
---|
817 | memcpy(ctx->wbuffer + bufpos, buffer, remaining);
|
---|
818 | buffer = (const char *)buffer + remaining;
|
---|
819 | len -= remaining;
|
---|
820 | remaining = 128;
|
---|
821 | bufpos = 0;
|
---|
822 | sha512_process_block128(ctx);
|
---|
823 | }
|
---|
824 |
|
---|
825 | /* Save last, partial blosk */
|
---|
826 | memcpy(ctx->wbuffer + bufpos, buffer, len);
|
---|
827 | #else
|
---|
828 | while (1) {
|
---|
829 | remaining = 128 - bufpos;
|
---|
830 | if (remaining > len)
|
---|
831 | remaining = len;
|
---|
832 | /* Copy data into aligned buffer */
|
---|
833 | memcpy(ctx->wbuffer + bufpos, buffer, remaining);
|
---|
834 | len -= remaining;
|
---|
835 | buffer = (const char *)buffer + remaining;
|
---|
836 | bufpos += remaining;
|
---|
837 | /* clever way to do "if (bufpos != 128) break; ... ; bufpos = 0;" */
|
---|
838 | bufpos -= 128;
|
---|
839 | if (bufpos != 0)
|
---|
840 | break;
|
---|
841 | /* Buffer is filled up, process it */
|
---|
842 | sha512_process_block128(ctx);
|
---|
843 | /*bufpos = 0; - already is */
|
---|
844 | }
|
---|
845 | #endif
|
---|
846 | }
|
---|
847 |
|
---|
848 | /* Used also for sha256 */
|
---|
849 | void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf)
|
---|
850 | {
|
---|
851 | unsigned hash_size;
|
---|
852 |
|
---|
853 | /* SHA stores total in BE, need to swap on LE arches: */
|
---|
854 | common64_end(ctx, /*swap_needed:*/ BB_LITTLE_ENDIAN);
|
---|
855 |
|
---|
856 | hash_size = (ctx->process_block == sha1_process_block64) ? 5 : 8;
|
---|
857 | /* This way we do not impose alignment constraints on resbuf: */
|
---|
858 | if (BB_LITTLE_ENDIAN) {
|
---|
859 | unsigned i;
|
---|
860 | for (i = 0; i < hash_size; ++i)
|
---|
861 | ctx->hash[i] = SWAP_BE32(ctx->hash[i]);
|
---|
862 | }
|
---|
863 | memcpy(resbuf, ctx->hash, sizeof(ctx->hash[0]) * hash_size);
|
---|
864 | }
|
---|
865 |
|
---|
866 | void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf)
|
---|
867 | {
|
---|
868 | unsigned bufpos = ctx->total64[0] & 127;
|
---|
869 |
|
---|
870 | /* Pad the buffer to the next 128-byte boundary with 0x80,0,0,0... */
|
---|
871 | ctx->wbuffer[bufpos++] = 0x80;
|
---|
872 |
|
---|
873 | while (1) {
|
---|
874 | unsigned remaining = 128 - bufpos;
|
---|
875 | memset(ctx->wbuffer + bufpos, 0, remaining);
|
---|
876 | if (remaining >= 16) {
|
---|
877 | /* Store the 128-bit counter of bits in the buffer in BE format */
|
---|
878 | uint64_t t;
|
---|
879 | t = ctx->total64[0] << 3;
|
---|
880 | t = SWAP_BE64(t);
|
---|
881 | *(uint64_t *) (&ctx->wbuffer[128 - 8]) = t;
|
---|
882 | t = (ctx->total64[1] << 3) | (ctx->total64[0] >> 61);
|
---|
883 | t = SWAP_BE64(t);
|
---|
884 | *(uint64_t *) (&ctx->wbuffer[128 - 16]) = t;
|
---|
885 | }
|
---|
886 | sha512_process_block128(ctx);
|
---|
887 | if (remaining >= 16)
|
---|
888 | break;
|
---|
889 | bufpos = 0;
|
---|
890 | }
|
---|
891 |
|
---|
892 | if (BB_LITTLE_ENDIAN) {
|
---|
893 | unsigned i;
|
---|
894 | for (i = 0; i < ARRAY_SIZE(ctx->hash); ++i)
|
---|
895 | ctx->hash[i] = SWAP_BE64(ctx->hash[i]);
|
---|
896 | }
|
---|
897 | memcpy(resbuf, ctx->hash, sizeof(ctx->hash));
|
---|
898 | }
|
---|