2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 #define CH(X, Y, Z) ((((Y) ^ (Z)) & (X)) ^ (Z))
28 #define MAJ(X, Y, Z) (((Y) & (Z)) | (((Y) | (Z)) & (X)))
30 #define ROTR(x, n) (((uint32_t)(x) << (32 - (n))) | ((uint32_t)(x) >> (n)))
32 #define BSG2_0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
33 #define BSG2_1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
34 #define SSG2_0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ (uint32_t)((x) >> 3))
35 #define SSG2_1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ (uint32_t)((x) >> 10))
38 const uint32_t br_sha224_IV
[8] = {
39 0xC1059ED8, 0x367CD507, 0x3070DD17, 0xF70E5939,
40 0xFFC00B31, 0x68581511, 0x64F98FA7, 0xBEFA4FA4
44 const uint32_t br_sha256_IV
[8] = {
45 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
46 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19
49 static const uint32_t K
[64] = {
50 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
51 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
52 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
53 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
54 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
55 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
56 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
57 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
58 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
59 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
60 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
61 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
62 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
63 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
64 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
65 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
70 br_sha2small_round(const unsigned char *buf
, uint32_t *val
)
73 #define SHA2_STEP(A, B, C, D, E, F, G, H, j) do { \
75 T1 = H + BSG2_1(E) + CH(E, F, G) + K[j] + w[j]; \
76 T2 = BSG2_0(A) + MAJ(A, B, C); \
82 uint32_t a
, b
, c
, d
, e
, f
, g
, h
;
85 br_range_dec32be(w
, 16, buf
);
86 for (i
= 16; i
< 64; i
++) {
87 w
[i
] = SSG2_1(w
[i
- 2]) + w
[i
- 7]
88 + SSG2_0(w
[i
- 15]) + w
[i
- 16];
98 for (i
= 0; i
< 64; i
+= 8) {
99 SHA2_STEP(a
, b
, c
, d
, e
, f
, g
, h
, i
+ 0);
100 SHA2_STEP(h
, a
, b
, c
, d
, e
, f
, g
, i
+ 1);
101 SHA2_STEP(g
, h
, a
, b
, c
, d
, e
, f
, i
+ 2);
102 SHA2_STEP(f
, g
, h
, a
, b
, c
, d
, e
, i
+ 3);
103 SHA2_STEP(e
, f
, g
, h
, a
, b
, c
, d
, i
+ 4);
104 SHA2_STEP(d
, e
, f
, g
, h
, a
, b
, c
, i
+ 5);
105 SHA2_STEP(c
, d
, e
, f
, g
, h
, a
, b
, i
+ 6);
106 SHA2_STEP(b
, c
, d
, e
, f
, g
, h
, a
, i
+ 7);
119 #define SHA2_MEXP1(pc) do { \
120 W[pc] = br_dec32be(buf + ((pc) << 2)); \
123 #define SHA2_MEXP2(pc) do { \
124 W[(pc) & 0x0F] = SSG2_1(W[((pc) - 2) & 0x0F]) \
125 + W[((pc) - 7) & 0x0F] \
126 + SSG2_0(W[((pc) - 15) & 0x0F]) + W[(pc) & 0x0F]; \
129 #define SHA2_STEPn(n, a, b, c, d, e, f, g, h, pc) do { \
131 SHA2_MEXP ## n(pc); \
132 t1 = h + BSG2_1(e) + CH(e, f, g) \
133 + K[pcount + (pc)] + W[(pc) & 0x0F]; \
134 t2 = BSG2_0(a) + MAJ(a, b, c); \
139 #define SHA2_STEP1(a, b, c, d, e, f, g, h, pc) \
140 SHA2_STEPn(1, a, b, c, d, e, f, g, h, pc)
141 #define SHA2_STEP2(a, b, c, d, e, f, g, h, pc) \
142 SHA2_STEPn(2, a, b, c, d, e, f, g, h, pc)
144 uint32_t A
, B
, C
, D
, E
, F
, G
, H
;
157 SHA2_STEP1(A
, B
, C
, D
, E
, F
, G
, H
, 0);
158 SHA2_STEP1(H
, A
, B
, C
, D
, E
, F
, G
, 1);
159 SHA2_STEP1(G
, H
, A
, B
, C
, D
, E
, F
, 2);
160 SHA2_STEP1(F
, G
, H
, A
, B
, C
, D
, E
, 3);
161 SHA2_STEP1(E
, F
, G
, H
, A
, B
, C
, D
, 4);
162 SHA2_STEP1(D
, E
, F
, G
, H
, A
, B
, C
, 5);
163 SHA2_STEP1(C
, D
, E
, F
, G
, H
, A
, B
, 6);
164 SHA2_STEP1(B
, C
, D
, E
, F
, G
, H
, A
, 7);
165 SHA2_STEP1(A
, B
, C
, D
, E
, F
, G
, H
, 8);
166 SHA2_STEP1(H
, A
, B
, C
, D
, E
, F
, G
, 9);
167 SHA2_STEP1(G
, H
, A
, B
, C
, D
, E
, F
, 10);
168 SHA2_STEP1(F
, G
, H
, A
, B
, C
, D
, E
, 11);
169 SHA2_STEP1(E
, F
, G
, H
, A
, B
, C
, D
, 12);
170 SHA2_STEP1(D
, E
, F
, G
, H
, A
, B
, C
, 13);
171 SHA2_STEP1(C
, D
, E
, F
, G
, H
, A
, B
, 14);
172 SHA2_STEP1(B
, C
, D
, E
, F
, G
, H
, A
, 15);
173 for (pcount
= 16; pcount
< 64; pcount
+= 16) {
174 SHA2_STEP2(A
, B
, C
, D
, E
, F
, G
, H
, 0);
175 SHA2_STEP2(H
, A
, B
, C
, D
, E
, F
, G
, 1);
176 SHA2_STEP2(G
, H
, A
, B
, C
, D
, E
, F
, 2);
177 SHA2_STEP2(F
, G
, H
, A
, B
, C
, D
, E
, 3);
178 SHA2_STEP2(E
, F
, G
, H
, A
, B
, C
, D
, 4);
179 SHA2_STEP2(D
, E
, F
, G
, H
, A
, B
, C
, 5);
180 SHA2_STEP2(C
, D
, E
, F
, G
, H
, A
, B
, 6);
181 SHA2_STEP2(B
, C
, D
, E
, F
, G
, H
, A
, 7);
182 SHA2_STEP2(A
, B
, C
, D
, E
, F
, G
, H
, 8);
183 SHA2_STEP2(H
, A
, B
, C
, D
, E
, F
, G
, 9);
184 SHA2_STEP2(G
, H
, A
, B
, C
, D
, E
, F
, 10);
185 SHA2_STEP2(F
, G
, H
, A
, B
, C
, D
, E
, 11);
186 SHA2_STEP2(E
, F
, G
, H
, A
, B
, C
, D
, 12);
187 SHA2_STEP2(D
, E
, F
, G
, H
, A
, B
, C
, 13);
188 SHA2_STEP2(C
, D
, E
, F
, G
, H
, A
, B
, 14);
189 SHA2_STEP2(B
, C
, D
, E
, F
, G
, H
, A
, 15);
203 sha2small_update(br_sha224_context
*cc
, const void *data
, size_t len
)
205 const unsigned char *buf
;
209 ptr
= (size_t)cc
->count
& 63;
210 cc
->count
+= (uint64_t)len
;
218 memcpy(cc
->buf
+ ptr
, buf
, clen
);
223 br_sha2small_round(cc
->buf
, cc
->val
);
230 sha2small_out(const br_sha224_context
*cc
, void *dst
, int num
)
232 unsigned char buf
[64];
236 ptr
= (size_t)cc
->count
& 63;
237 memcpy(buf
, cc
->buf
, ptr
);
238 memcpy(val
, cc
->val
, sizeof val
);
241 memset(buf
+ ptr
, 0, 64 - ptr
);
242 br_sha2small_round(buf
, val
);
245 memset(buf
+ ptr
, 0, 56 - ptr
);
247 br_enc64be(buf
+ 56, cc
->count
<< 3);
248 br_sha2small_round(buf
, val
);
249 br_range_enc32be(dst
, val
, num
);
254 br_sha224_init(br_sha224_context
*cc
)
256 cc
->vtable
= &br_sha224_vtable
;
257 memcpy(cc
->val
, br_sha224_IV
, sizeof cc
->val
);
263 br_sha224_update(br_sha224_context
*cc
, const void *data
, size_t len
)
265 sha2small_update(cc
, data
, len
);
270 br_sha224_out(const br_sha224_context
*cc
, void *dst
)
272 sha2small_out(cc
, dst
, 7);
277 br_sha224_state(const br_sha224_context
*cc
, void *dst
)
279 br_range_enc32be(dst
, cc
->val
, 8);
285 br_sha224_set_state(br_sha224_context
*cc
, const void *stb
, uint64_t count
)
287 br_range_dec32be(cc
->val
, 8, stb
);
293 br_sha256_init(br_sha256_context
*cc
)
295 cc
->vtable
= &br_sha256_vtable
;
296 memcpy(cc
->val
, br_sha256_IV
, sizeof cc
->val
);
302 br_sha256_out(const br_sha256_context
*cc
, void *dst
)
304 sha2small_out(cc
, dst
, 8);
308 const br_hash_class br_sha224_vtable
= {
309 sizeof(br_sha224_context
),
310 BR_HASHDESC_ID(br_sha224_ID
)
311 | BR_HASHDESC_OUT(28)
312 | BR_HASHDESC_STATE(32)
313 | BR_HASHDESC_LBLEN(6)
314 | BR_HASHDESC_MD_PADDING
315 | BR_HASHDESC_MD_PADDING_BE
,
316 (void (*)(const br_hash_class
**))&br_sha224_init
,
317 (void (*)(const br_hash_class
**,
318 const void *, size_t))&br_sha224_update
,
319 (void (*)(const br_hash_class
*const *, void *))&br_sha224_out
,
320 (uint64_t (*)(const br_hash_class
*const *, void *))&br_sha224_state
,
321 (void (*)(const br_hash_class
**, const void *, uint64_t))
326 const br_hash_class br_sha256_vtable
= {
327 sizeof(br_sha256_context
),
328 BR_HASHDESC_ID(br_sha256_ID
)
329 | BR_HASHDESC_OUT(32)
330 | BR_HASHDESC_STATE(32)
331 | BR_HASHDESC_LBLEN(6)
332 | BR_HASHDESC_MD_PADDING
333 | BR_HASHDESC_MD_PADDING_BE
,
334 (void (*)(const br_hash_class
**))&br_sha256_init
,
335 (void (*)(const br_hash_class
**,
336 const void *, size_t))&br_sha256_update
,
337 (void (*)(const br_hash_class
*const *, void *))&br_sha256_out
,
338 (uint64_t (*)(const br_hash_class
*const *, void *))&br_sha256_state
,
339 (void (*)(const br_hash_class
**, const void *, uint64_t))