3 * $Id: sha512.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
5 * Implementation of the SHA-512 hash function
7 * (c) 2000 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Header files ------------------------------------------------------*/
32 #include <mLib/bits.h>
35 #include "ghash-def.h"
39 /*----- Main code ---------------------------------------------------------*/
41 /* --- @sha512_compress@, @sha384_compress@ --- *
43 * Arguments: @sha512_ctx *ctx@ = pointer to context block
44 * @const void *sbuf@ = pointer to buffer of appropriate size
48 * Use: SHA-512 compression function.
51 void sha512_compress(sha512_ctx
*ctx
, const void *sbuf
)
53 kludge64 a
, b
, c
, d
, e
, f
, g
, h
;
57 static const kludge64 K
[80] = {
58 X64(428a2f98
, d728ae22
), X64(71374491, 23ef65cd
),
59 X64(b5c0fbcf
, ec4d3b2f
), X64(e9b5dba5
, 8189dbbc
),
60 X64(3956c25b
, f348b538
), X64(59f111f1
, b605d019
),
61 X64(923f82a4
, af194f9b
), X64(ab1c5ed5
, da6d8118
),
62 X64(d807aa98
, a3030242
), X64(12835b01
, 45706fbe
),
63 X64(243185be
, 4ee4b28c
), X64(550c7dc3
, d5ffb4e2
),
64 X64(72be5d74
, f27b896f
), X64(80deb1fe
, 3b1696b1
),
65 X64(9bdc06a7
, 25c71235
), X64(c19bf174
, cf692694
),
66 X64(e49b69c1
, 9ef14ad2
), X64(efbe4786
, 384f25e3
),
67 X64(0fc19dc6
, 8b8cd5b5
), X64(240ca1cc
, 77ac9c65
),
68 X64(2de92c6f
, 592b0275
), X64(4a7484aa
, 6ea6e483
),
69 X64(5cb0a9dc
, bd41fbd4
), X64(76f988da
, 831153b5
),
70 X64(983e5152
, ee66dfab
), X64(a831c66d
, 2db43210
),
71 X64(b00327c8
, 98fb213f
), X64(bf597fc7
, beef0ee4
),
72 X64(c6e00bf3
, 3da88fc2
), X64(d5a79147
, 930aa725
),
73 X64(06ca6351
, e003826f
), X64(14292967, 0a0e6e70
),
74 X64(27b70a85
, 46d22ffc
), X64(2e1b2138
, 5c26c926
),
75 X64(4d2c6dfc
, 5ac42aed
), X64(53380d13
, 9d95b3df
),
76 X64(650a7354
, 8baf63de
), X64(766a0abb
, 3c77b2a8
),
77 X64(81c2c92e
, 47edaee6
), X64(92722c85
, 1482353b
),
78 X64(a2bfe8a1
, 4cf10364
), X64(a81a664b
, bc423001
),
79 X64(c24b8b70
, d0f89791
), X64(c76c51a3
, 0654be30
),
80 X64(d192e819
, d6ef5218
), X64(d6990624
, 5565a910
),
81 X64(f40e3585
, 5771202a
), X64(106aa070
, 32bbd1b8
),
82 X64(19a4c116
, b8d2d0c8
), X64(1e376c08
, 5141ab53
),
83 X64(2748774c
, df8eeb99
), X64(34b0bcb5
, e19b48a8
),
84 X64(391c0cb3
, c5c95a63
), X64(4ed8aa4a
, e3418acb
),
85 X64(5b9cca4f
, 7763e373
), X64(682e6ff3
, d6b2b8a3
),
86 X64(748f82ee
, 5defb2fc
), X64(78a5636f
, 43172f60
),
87 X64(84c87814
, a1f0ab72
), X64(8cc70208
, 1a6439ec
),
88 X64(90befffa
, 23631e28
), X64(a4506ceb
, de82bde9
),
89 X64(bef9a3f7
, b2c67915
), X64(c67178f2
, e372532b
),
90 X64(ca273ece
, ea26619c
), X64(d186b8c7
, 21c0c207
),
91 X64(eada7dd6
, cde0eb1e
), X64(f57d4f7f
, ee6ed178
),
92 X64(06f067aa
, 72176fba
), X64(0a637dc5
, a2c898a6
),
93 X64(113f9804
, bef90dae
), X64(1b710b35
, 131c471b
),
94 X64(28db77f5
, 23047d84
), X64(32caab7b
, 40c72493
),
95 X64(3c9ebe0a
, 15c9bebc
), X64(431d67c4
, 9c100d4c
),
96 X64(4cc5d4be
, cb3e42b6
), X64(597f299c
, fc657e2a
),
97 X64(5fcb6fab
, 3ad6faec
), X64(6c44198c
, 4a475817
)
100 /* --- Fetch the chaining variables --- */
111 /* --- Definitions for round functions --- */
113 #define CH(d, x, y, z) do { \
114 kludge64 _x; AND64((d), (x), (y)); CPL64(_x, (x)); \
115 AND64(_x, _x, (z)); OR64((d), (d), _x); \
118 #define MAJ(d, x, y, z) do { \
119 kludge64 _x; AND64((d), (x), (y)); AND64(_x, (x), (z)); \
120 OR64((d), (d), _x); AND64(_x, (y), (z)); OR64((d), (d), _x); \
123 #define SIGMA(d, x, i, j, k, last, what) do { \
124 kludge64 _x; ROR64_((d), (x), (i)); ROR64_(_x, (x), (j)); \
125 XOR64((d), (d), _x); last##64_(_x, (x), (k)); XOR64((d), (d), _x); \
128 #define S0(d, x) SIGMA(d, x, 28, 34, 39, ROR, S0);
129 #define S1(d, x) SIGMA(d, x, 14, 18, 41, ROR, S1);
130 #define s0(d, x) SIGMA(d, x, 1, 8, 7, LSR, s0);
131 #define s1(d, x) SIGMA(d, x, 19, 61, 6, LSR, s1);
133 #define T(a, b, c, d, e, f, g, h, i) do { \
134 kludge64 t1, t2, x; \
135 ADD64(t1, buf[i], K[i]); ADD64(t1, t1, h); \
136 S1(x, e); ADD64(t1, t1, x); CH(x, e, f, g); ADD64(t1, t1, x); \
137 S0(t2, a); MAJ(x, a, b, c); ADD64(t2, t2, x); \
138 ADD64(d, d, t1); ADD64(h, t1, t2); \
141 /* --- Fetch and expand the buffer contents --- */
146 for (i
= 0, p
= sbuf
; i
< 16; i
++, p
+= 8)
148 for (i
= 16; i
< 80; i
++) {
150 buf
[i
] = buf
[i
- 7]; s1(x
, buf
[i
- 2]); ADD64(buf
[i
], buf
[i
], x
);
151 s0(x
, buf
[i
- 15]); ADD64(buf
[i
], buf
[i
], x
);
152 ADD64(buf
[i
], buf
[i
], buf
[i
- 16]);
156 /* --- The main compression function --- */
158 for (i
= 0; i
< 80; i
+= 8) {
159 T(a
, b
, c
, d
, e
, f
, g
, h
, i
+ 0);
160 T(h
, a
, b
, c
, d
, e
, f
, g
, i
+ 1);
161 T(g
, h
, a
, b
, c
, d
, e
, f
, i
+ 2);
162 T(f
, g
, h
, a
, b
, c
, d
, e
, i
+ 3);
163 T(e
, f
, g
, h
, a
, b
, c
, d
, i
+ 4);
164 T(d
, e
, f
, g
, h
, a
, b
, c
, i
+ 5);
165 T(c
, d
, e
, f
, g
, h
, a
, b
, i
+ 6);
166 T(b
, c
, d
, e
, f
, g
, h
, a
, i
+ 7);
169 /* --- Update the chaining variables --- */
171 ADD64(ctx
->a
, ctx
->a
, a
);
172 ADD64(ctx
->b
, ctx
->b
, b
);
173 ADD64(ctx
->c
, ctx
->c
, c
);
174 ADD64(ctx
->d
, ctx
->d
, d
);
175 ADD64(ctx
->e
, ctx
->e
, e
);
176 ADD64(ctx
->f
, ctx
->f
, f
);
177 ADD64(ctx
->g
, ctx
->g
, g
);
178 ADD64(ctx
->h
, ctx
->h
, h
);
181 /* --- @sha512_init@, @sha384_init@ --- *
183 * Arguments: @sha512_ctx *ctx@ = pointer to context block to initialize
187 * Use: Initializes a context block ready for hashing.
190 void sha512_init(sha512_ctx
*ctx
)
192 SET64(ctx
->a
, 0x6a09e667, 0xf3bcc908);
193 SET64(ctx
->b
, 0xbb67ae85, 0x84caa73b);
194 SET64(ctx
->c
, 0x3c6ef372, 0xfe94f82b);
195 SET64(ctx
->d
, 0xa54ff53a, 0x5f1d36f1);
196 SET64(ctx
->e
, 0x510e527f, 0xade682d1);
197 SET64(ctx
->f
, 0x9b05688c, 0x2b3e6c1f);
198 SET64(ctx
->g
, 0x1f83d9ab, 0xfb41bd6b);
199 SET64(ctx
->h
, 0x5be0cd19, 0x137e2179);
201 ctx
->nh
= ctx
->nl
= 0;
204 void sha384_init(sha512_ctx
*ctx
)
206 SET64(ctx
->a
, 0xcbbb9d5d, 0xc1059ed8);
207 SET64(ctx
->b
, 0x629a292a, 0x367cd507);
208 SET64(ctx
->c
, 0x9159015a, 0x3070dd17);
209 SET64(ctx
->d
, 0x152fecd8, 0xf70e5939);
210 SET64(ctx
->e
, 0x67332667, 0xffc00b31);
211 SET64(ctx
->f
, 0x8eb44a87, 0x68581511);
212 SET64(ctx
->g
, 0xdb0c2e0d, 0x64f98fa7);
213 SET64(ctx
->h
, 0x47b5481d, 0xbefa4fa4);
215 ctx
->nh
= ctx
->nl
= 0;
218 /* --- @sha512_set@, @sha384_set@ --- *
220 * Arguments: @sha512_ctx *ctx@ = pointer to context block
221 * @const void *buf@ = pointer to state buffer
222 * @unsigned long count@ = current count of bytes processed
226 * Use: Initializes a context block from a given state. This is
227 * useful in cases where the initial hash state is meant to be
228 * secret, e.g., for NMAC and HMAC support.
231 void sha512_set(sha512_ctx
*ctx
, const void *buf
, unsigned long count
)
233 const octet
*p
= buf
;
234 LOAD64_(ctx
->a
, p
+ 0);
235 LOAD64_(ctx
->b
, p
+ 8);
236 LOAD64_(ctx
->c
, p
+ 16);
237 LOAD64_(ctx
->d
, p
+ 24);
238 LOAD64_(ctx
->e
, p
+ 32);
239 LOAD64_(ctx
->f
, p
+ 40);
240 LOAD64_(ctx
->g
, p
+ 48);
241 LOAD64_(ctx
->h
, p
+ 56);
243 ctx
->nl
= U32(count
);
244 ctx
->nh
= U32(((count
& ~MASK32
) >> 16) >> 16);
247 /* --- @sha512_hash@, @sha384_hash@ --- *
249 * Arguments: @sha512_ctx *ctx@ = pointer to context block
250 * @const void *buf@ = buffer of data to hash
251 * @size_t sz@ = size of buffer to hash
255 * Use: Hashes a buffer of data. The buffer may be of any size and
259 void sha512_hash(sha512_ctx
*ctx
, const void *buf
, size_t sz
)
261 HASH_BUFFER(SHA512
, sha512
, ctx
, buf
, sz
);
264 /* --- @sha512_done@, @sha384_done@ --- *
266 * Arguments: @sha512_ctx *ctx@ = pointer to context block
267 * @void *hash@ = pointer to output buffer
271 * Use: Returns the hash of the data read so far.
274 static void final(sha512_ctx
*ctx
)
276 HASH_PAD(SHA512
, sha512
, ctx
, 0x80, 0, 16);
277 memset(ctx
->buf
+ SHA512_BUFSZ
- 16, 0, 8);
278 STORE32(ctx
->buf
+ SHA512_BUFSZ
- 8, (ctx
->nl
>> 29) | (ctx
->nh
<< 3));
279 STORE32(ctx
->buf
+ SHA512_BUFSZ
- 4, ctx
->nl
<< 3);
280 sha512_compress(ctx
, ctx
->buf
);
283 void sha512_done(sha512_ctx
*ctx
, void *hash
)
287 STORE64_(p
+ 0, ctx
->a
);
288 STORE64_(p
+ 8, ctx
->b
);
289 STORE64_(p
+ 16, ctx
->c
);
290 STORE64_(p
+ 24, ctx
->d
);
291 STORE64_(p
+ 32, ctx
->e
);
292 STORE64_(p
+ 40, ctx
->f
);
293 STORE64_(p
+ 48, ctx
->g
);
294 STORE64_(p
+ 56, ctx
->h
);
297 void sha384_done(sha384_ctx
*ctx
, void *hash
)
301 STORE64_(p
+ 0, ctx
->a
);
302 STORE64_(p
+ 8, ctx
->b
);
303 STORE64_(p
+ 16, ctx
->c
);
304 STORE64_(p
+ 24, ctx
->d
);
305 STORE64_(p
+ 32, ctx
->e
);
306 STORE64_(p
+ 40, ctx
->f
);
309 /* --- @sha512_state@, @sha384_state@ --- *
311 * Arguments: @sha512_ctx *ctx@ = pointer to context
312 * @void *state@ = pointer to buffer for current state
314 * Returns: Number of bytes written to the hash function so far.
316 * Use: Returns the current state of the hash function such that
317 * it can be passed to @sha512_set@.
320 unsigned long sha512_state(sha512_ctx
*ctx
, void *state
)
323 STORE64_(p
+ 0, ctx
->a
);
324 STORE64_(p
+ 8, ctx
->b
);
325 STORE64_(p
+ 16, ctx
->c
);
326 STORE64_(p
+ 24, ctx
->d
);
327 STORE64_(p
+ 32, ctx
->e
);
328 STORE64_(p
+ 40, ctx
->f
);
329 STORE64_(p
+ 48, ctx
->g
);
330 STORE64_(p
+ 56, ctx
->h
);
331 return (ctx
->nl
| ((ctx
->nh
<< 16) << 16));
334 /* --- Generic interface --- */
336 GHASH_DEF(SHA512
, sha512
)
338 /* --- Test code --- */
340 HASH_TEST(SHA512
, sha512
)
342 /*----- That's all, folks -------------------------------------------------*/