1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/sha.h>
58
59 #include <string.h>
60
61 #include <openssl/mem.h>
62
63 #include "../../internal.h"
64 #include "../digest/md32_common.h"
65 #include "internal.h"
66
67
SHA1_Init(SHA_CTX * sha)68 int SHA1_Init(SHA_CTX *sha) {
69 OPENSSL_memset(sha, 0, sizeof(SHA_CTX));
70 sha->h[0] = 0x67452301UL;
71 sha->h[1] = 0xefcdab89UL;
72 sha->h[2] = 0x98badcfeUL;
73 sha->h[3] = 0x10325476UL;
74 sha->h[4] = 0xc3d2e1f0UL;
75 return 1;
76 }
77
SHA1(const uint8_t * data,size_t len,uint8_t out[SHA_DIGEST_LENGTH])78 uint8_t *SHA1(const uint8_t *data, size_t len, uint8_t out[SHA_DIGEST_LENGTH]) {
79 SHA_CTX ctx;
80 SHA1_Init(&ctx);
81 SHA1_Update(&ctx, data, len);
82 SHA1_Final(out, &ctx);
83 OPENSSL_cleanse(&ctx, sizeof(ctx));
84 return out;
85 }
86
87 #if !defined(SHA1_ASM)
88 static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
89 size_t num);
90 #endif
91
SHA1_Transform(SHA_CTX * c,const uint8_t data[SHA_CBLOCK])92 void SHA1_Transform(SHA_CTX *c, const uint8_t data[SHA_CBLOCK]) {
93 sha1_block_data_order(c->h, data, 1);
94 }
95
SHA1_Update(SHA_CTX * c,const void * data,size_t len)96 int SHA1_Update(SHA_CTX *c, const void *data, size_t len) {
97 crypto_md32_update(&sha1_block_data_order, c->h, c->data, SHA_CBLOCK, &c->num,
98 &c->Nh, &c->Nl, data, len);
99 return 1;
100 }
101
SHA1_Final(uint8_t out[SHA_DIGEST_LENGTH],SHA_CTX * c)102 int SHA1_Final(uint8_t out[SHA_DIGEST_LENGTH], SHA_CTX *c) {
103 crypto_md32_final(&sha1_block_data_order, c->h, c->data, SHA_CBLOCK, &c->num,
104 c->Nh, c->Nl, /*is_big_endian=*/1);
105
106 CRYPTO_store_u32_be(out, c->h[0]);
107 CRYPTO_store_u32_be(out + 4, c->h[1]);
108 CRYPTO_store_u32_be(out + 8, c->h[2]);
109 CRYPTO_store_u32_be(out + 12, c->h[3]);
110 CRYPTO_store_u32_be(out + 16, c->h[4]);
111 return 1;
112 }
113
114 #define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
115 #define Xupdate(a, ix, ia, ib, ic, id) \
116 do { \
117 (a) = ((ia) ^ (ib) ^ (ic) ^ (id)); \
118 (ix) = (a) = ROTATE((a), 1); \
119 } while (0)
120
121 #define K_00_19 0x5a827999UL
122 #define K_20_39 0x6ed9eba1UL
123 #define K_40_59 0x8f1bbcdcUL
124 #define K_60_79 0xca62c1d6UL
125
126 // As pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
127 // to the code in F_00_19. Wei attributes these optimisations to Peter
128 // Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
129 // F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) I've just become aware of another
130 // tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a
131 #define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
132 #define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
133 #define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
134 #define F_60_79(b, c, d) F_20_39(b, c, d)
135
136 #define BODY_00_15(i, a, b, c, d, e, f, xi) \
137 do { \
138 (f) = (xi) + (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
139 (b) = ROTATE((b), 30); \
140 } while (0)
141
142 #define BODY_16_19(i, a, b, c, d, e, f, xi, xa, xb, xc, xd) \
143 do { \
144 Xupdate(f, xi, xa, xb, xc, xd); \
145 (f) += (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
146 (b) = ROTATE((b), 30); \
147 } while (0)
148
149 #define BODY_20_31(i, a, b, c, d, e, f, xi, xa, xb, xc, xd) \
150 do { \
151 Xupdate(f, xi, xa, xb, xc, xd); \
152 (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
153 (b) = ROTATE((b), 30); \
154 } while (0)
155
156 #define BODY_32_39(i, a, b, c, d, e, f, xa, xb, xc, xd) \
157 do { \
158 Xupdate(f, xa, xa, xb, xc, xd); \
159 (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
160 (b) = ROTATE((b), 30); \
161 } while (0)
162
163 #define BODY_40_59(i, a, b, c, d, e, f, xa, xb, xc, xd) \
164 do { \
165 Xupdate(f, xa, xa, xb, xc, xd); \
166 (f) += (e) + K_40_59 + ROTATE((a), 5) + F_40_59((b), (c), (d)); \
167 (b) = ROTATE((b), 30); \
168 } while (0)
169
170 #define BODY_60_79(i, a, b, c, d, e, f, xa, xb, xc, xd) \
171 do { \
172 Xupdate(f, xa, xa, xb, xc, xd); \
173 (f) = (xa) + (e) + K_60_79 + ROTATE((a), 5) + F_60_79((b), (c), (d)); \
174 (b) = ROTATE((b), 30); \
175 } while (0)
176
177 #ifdef X
178 #undef X
179 #endif
180
181 /* Originally X was an array. As it's automatic it's natural
182 * to expect RISC compiler to accomodate at least part of it in
183 * the register bank, isn't it? Unfortunately not all compilers
184 * "find" this expectation reasonable:-( On order to make such
185 * compilers generate better code I replace X[] with a bunch of
186 * X0, X1, etc. See the function body below...
187 * <appro@fy.chalmers.se> */
188 #define X(i) XX##i
189
190 #if !defined(SHA1_ASM)
sha1_block_data_order(uint32_t * state,const uint8_t * data,size_t num)191 static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
192 size_t num) {
193 register uint32_t A, B, C, D, E, T;
194 uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10,
195 XX11, XX12, XX13, XX14, XX15;
196
197 A = state[0];
198 B = state[1];
199 C = state[2];
200 D = state[3];
201 E = state[4];
202
203 for (;;) {
204 X(0) = CRYPTO_load_u32_be(data);
205 data += 4;
206 X(1) = CRYPTO_load_u32_be(data);
207 data += 4;
208 BODY_00_15(0, A, B, C, D, E, T, X(0));
209 X(2) = CRYPTO_load_u32_be(data);
210 data += 4;
211 BODY_00_15(1, T, A, B, C, D, E, X(1));
212 X(3) = CRYPTO_load_u32_be(data);
213 data += 4;
214 BODY_00_15(2, E, T, A, B, C, D, X(2));
215 X(4) = CRYPTO_load_u32_be(data);
216 data += 4;
217 BODY_00_15(3, D, E, T, A, B, C, X(3));
218 X(5) = CRYPTO_load_u32_be(data);
219 data += 4;
220 BODY_00_15(4, C, D, E, T, A, B, X(4));
221 X(6) = CRYPTO_load_u32_be(data);
222 data += 4;
223 BODY_00_15(5, B, C, D, E, T, A, X(5));
224 X(7) = CRYPTO_load_u32_be(data);
225 data += 4;
226 BODY_00_15(6, A, B, C, D, E, T, X(6));
227 X(8) = CRYPTO_load_u32_be(data);
228 data += 4;
229 BODY_00_15(7, T, A, B, C, D, E, X(7));
230 X(9) = CRYPTO_load_u32_be(data);
231 data += 4;
232 BODY_00_15(8, E, T, A, B, C, D, X(8));
233 X(10) = CRYPTO_load_u32_be(data);
234 data += 4;
235 BODY_00_15(9, D, E, T, A, B, C, X(9));
236 X(11) = CRYPTO_load_u32_be(data);
237 data += 4;
238 BODY_00_15(10, C, D, E, T, A, B, X(10));
239 X(12) = CRYPTO_load_u32_be(data);
240 data += 4;
241 BODY_00_15(11, B, C, D, E, T, A, X(11));
242 X(13) = CRYPTO_load_u32_be(data);
243 data += 4;
244 BODY_00_15(12, A, B, C, D, E, T, X(12));
245 X(14) = CRYPTO_load_u32_be(data);
246 data += 4;
247 BODY_00_15(13, T, A, B, C, D, E, X(13));
248 X(15) = CRYPTO_load_u32_be(data);
249 data += 4;
250 BODY_00_15(14, E, T, A, B, C, D, X(14));
251 BODY_00_15(15, D, E, T, A, B, C, X(15));
252
253 BODY_16_19(16, C, D, E, T, A, B, X(0), X(0), X(2), X(8), X(13));
254 BODY_16_19(17, B, C, D, E, T, A, X(1), X(1), X(3), X(9), X(14));
255 BODY_16_19(18, A, B, C, D, E, T, X(2), X(2), X(4), X(10), X(15));
256 BODY_16_19(19, T, A, B, C, D, E, X(3), X(3), X(5), X(11), X(0));
257
258 BODY_20_31(20, E, T, A, B, C, D, X(4), X(4), X(6), X(12), X(1));
259 BODY_20_31(21, D, E, T, A, B, C, X(5), X(5), X(7), X(13), X(2));
260 BODY_20_31(22, C, D, E, T, A, B, X(6), X(6), X(8), X(14), X(3));
261 BODY_20_31(23, B, C, D, E, T, A, X(7), X(7), X(9), X(15), X(4));
262 BODY_20_31(24, A, B, C, D, E, T, X(8), X(8), X(10), X(0), X(5));
263 BODY_20_31(25, T, A, B, C, D, E, X(9), X(9), X(11), X(1), X(6));
264 BODY_20_31(26, E, T, A, B, C, D, X(10), X(10), X(12), X(2), X(7));
265 BODY_20_31(27, D, E, T, A, B, C, X(11), X(11), X(13), X(3), X(8));
266 BODY_20_31(28, C, D, E, T, A, B, X(12), X(12), X(14), X(4), X(9));
267 BODY_20_31(29, B, C, D, E, T, A, X(13), X(13), X(15), X(5), X(10));
268 BODY_20_31(30, A, B, C, D, E, T, X(14), X(14), X(0), X(6), X(11));
269 BODY_20_31(31, T, A, B, C, D, E, X(15), X(15), X(1), X(7), X(12));
270
271 BODY_32_39(32, E, T, A, B, C, D, X(0), X(2), X(8), X(13));
272 BODY_32_39(33, D, E, T, A, B, C, X(1), X(3), X(9), X(14));
273 BODY_32_39(34, C, D, E, T, A, B, X(2), X(4), X(10), X(15));
274 BODY_32_39(35, B, C, D, E, T, A, X(3), X(5), X(11), X(0));
275 BODY_32_39(36, A, B, C, D, E, T, X(4), X(6), X(12), X(1));
276 BODY_32_39(37, T, A, B, C, D, E, X(5), X(7), X(13), X(2));
277 BODY_32_39(38, E, T, A, B, C, D, X(6), X(8), X(14), X(3));
278 BODY_32_39(39, D, E, T, A, B, C, X(7), X(9), X(15), X(4));
279
280 BODY_40_59(40, C, D, E, T, A, B, X(8), X(10), X(0), X(5));
281 BODY_40_59(41, B, C, D, E, T, A, X(9), X(11), X(1), X(6));
282 BODY_40_59(42, A, B, C, D, E, T, X(10), X(12), X(2), X(7));
283 BODY_40_59(43, T, A, B, C, D, E, X(11), X(13), X(3), X(8));
284 BODY_40_59(44, E, T, A, B, C, D, X(12), X(14), X(4), X(9));
285 BODY_40_59(45, D, E, T, A, B, C, X(13), X(15), X(5), X(10));
286 BODY_40_59(46, C, D, E, T, A, B, X(14), X(0), X(6), X(11));
287 BODY_40_59(47, B, C, D, E, T, A, X(15), X(1), X(7), X(12));
288 BODY_40_59(48, A, B, C, D, E, T, X(0), X(2), X(8), X(13));
289 BODY_40_59(49, T, A, B, C, D, E, X(1), X(3), X(9), X(14));
290 BODY_40_59(50, E, T, A, B, C, D, X(2), X(4), X(10), X(15));
291 BODY_40_59(51, D, E, T, A, B, C, X(3), X(5), X(11), X(0));
292 BODY_40_59(52, C, D, E, T, A, B, X(4), X(6), X(12), X(1));
293 BODY_40_59(53, B, C, D, E, T, A, X(5), X(7), X(13), X(2));
294 BODY_40_59(54, A, B, C, D, E, T, X(6), X(8), X(14), X(3));
295 BODY_40_59(55, T, A, B, C, D, E, X(7), X(9), X(15), X(4));
296 BODY_40_59(56, E, T, A, B, C, D, X(8), X(10), X(0), X(5));
297 BODY_40_59(57, D, E, T, A, B, C, X(9), X(11), X(1), X(6));
298 BODY_40_59(58, C, D, E, T, A, B, X(10), X(12), X(2), X(7));
299 BODY_40_59(59, B, C, D, E, T, A, X(11), X(13), X(3), X(8));
300
301 BODY_60_79(60, A, B, C, D, E, T, X(12), X(14), X(4), X(9));
302 BODY_60_79(61, T, A, B, C, D, E, X(13), X(15), X(5), X(10));
303 BODY_60_79(62, E, T, A, B, C, D, X(14), X(0), X(6), X(11));
304 BODY_60_79(63, D, E, T, A, B, C, X(15), X(1), X(7), X(12));
305 BODY_60_79(64, C, D, E, T, A, B, X(0), X(2), X(8), X(13));
306 BODY_60_79(65, B, C, D, E, T, A, X(1), X(3), X(9), X(14));
307 BODY_60_79(66, A, B, C, D, E, T, X(2), X(4), X(10), X(15));
308 BODY_60_79(67, T, A, B, C, D, E, X(3), X(5), X(11), X(0));
309 BODY_60_79(68, E, T, A, B, C, D, X(4), X(6), X(12), X(1));
310 BODY_60_79(69, D, E, T, A, B, C, X(5), X(7), X(13), X(2));
311 BODY_60_79(70, C, D, E, T, A, B, X(6), X(8), X(14), X(3));
312 BODY_60_79(71, B, C, D, E, T, A, X(7), X(9), X(15), X(4));
313 BODY_60_79(72, A, B, C, D, E, T, X(8), X(10), X(0), X(5));
314 BODY_60_79(73, T, A, B, C, D, E, X(9), X(11), X(1), X(6));
315 BODY_60_79(74, E, T, A, B, C, D, X(10), X(12), X(2), X(7));
316 BODY_60_79(75, D, E, T, A, B, C, X(11), X(13), X(3), X(8));
317 BODY_60_79(76, C, D, E, T, A, B, X(12), X(14), X(4), X(9));
318 BODY_60_79(77, B, C, D, E, T, A, X(13), X(15), X(5), X(10));
319 BODY_60_79(78, A, B, C, D, E, T, X(14), X(0), X(6), X(11));
320 BODY_60_79(79, T, A, B, C, D, E, X(15), X(1), X(7), X(12));
321
322 state[0] = (state[0] + E) & 0xffffffffL;
323 state[1] = (state[1] + T) & 0xffffffffL;
324 state[2] = (state[2] + A) & 0xffffffffL;
325 state[3] = (state[3] + B) & 0xffffffffL;
326 state[4] = (state[4] + C) & 0xffffffffL;
327
328 if (--num == 0) {
329 break;
330 }
331
332 A = state[0];
333 B = state[1];
334 C = state[2];
335 D = state[3];
336 E = state[4];
337 }
338 }
339 #endif
340
341 #undef ROTATE
342 #undef Xupdate
343 #undef K_00_19
344 #undef K_20_39
345 #undef K_40_59
346 #undef K_60_79
347 #undef F_00_19
348 #undef F_20_39
349 #undef F_40_59
350 #undef F_60_79
351 #undef BODY_00_15
352 #undef BODY_16_19
353 #undef BODY_20_31
354 #undef BODY_32_39
355 #undef BODY_40_59
356 #undef BODY_60_79
357 #undef X
358