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eee16120 | 1 | /* -*-c-*- |
eee16120 | 2 | * |
3 | * Implementation of the SHA-512 hash function | |
4 | * | |
5 | * (c) 2000 Straylight/Edgeware | |
6 | */ | |
7 | ||
45c0fd36 | 8 | /*----- Licensing notice --------------------------------------------------* |
eee16120 | 9 | * |
10 | * This file is part of Catacomb. | |
11 | * | |
12 | * Catacomb is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU Library General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of the | |
15 | * License, or (at your option) any later version. | |
45c0fd36 | 16 | * |
eee16120 | 17 | * Catacomb is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU Library General Public License for more details. | |
45c0fd36 | 21 | * |
eee16120 | 22 | * You should have received a copy of the GNU Library General Public |
23 | * License along with Catacomb; if not, write to the Free | |
24 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
25 | * MA 02111-1307, USA. | |
26 | */ | |
27 | ||
eee16120 | 28 | /*----- Header files ------------------------------------------------------*/ |
29 | ||
30 | #include <mLib/bits.h> | |
31 | ||
32 | #include "ghash.h" | |
33 | #include "ghash-def.h" | |
34 | #include "hash.h" | |
35 | #include "sha512.h" | |
36 | ||
37 | /*----- Main code ---------------------------------------------------------*/ | |
38 | ||
39 | /* --- @sha512_compress@, @sha384_compress@ --- * | |
40 | * | |
41 | * Arguments: @sha512_ctx *ctx@ = pointer to context block | |
42 | * @const void *sbuf@ = pointer to buffer of appropriate size | |
43 | * | |
44 | * Returns: --- | |
45 | * | |
46 | * Use: SHA-512 compression function. | |
47 | */ | |
48 | ||
49 | void sha512_compress(sha512_ctx *ctx, const void *sbuf) | |
50 | { | |
51 | kludge64 a, b, c, d, e, f, g, h; | |
52 | kludge64 buf[80]; | |
53 | int i; | |
54 | ||
55 | static const kludge64 K[80] = { | |
56 | X64(428a2f98, d728ae22), X64(71374491, 23ef65cd), | |
57 | X64(b5c0fbcf, ec4d3b2f), X64(e9b5dba5, 8189dbbc), | |
58 | X64(3956c25b, f348b538), X64(59f111f1, b605d019), | |
59 | X64(923f82a4, af194f9b), X64(ab1c5ed5, da6d8118), | |
60 | X64(d807aa98, a3030242), X64(12835b01, 45706fbe), | |
61 | X64(243185be, 4ee4b28c), X64(550c7dc3, d5ffb4e2), | |
62 | X64(72be5d74, f27b896f), X64(80deb1fe, 3b1696b1), | |
63 | X64(9bdc06a7, 25c71235), X64(c19bf174, cf692694), | |
64 | X64(e49b69c1, 9ef14ad2), X64(efbe4786, 384f25e3), | |
65 | X64(0fc19dc6, 8b8cd5b5), X64(240ca1cc, 77ac9c65), | |
66 | X64(2de92c6f, 592b0275), X64(4a7484aa, 6ea6e483), | |
67 | X64(5cb0a9dc, bd41fbd4), X64(76f988da, 831153b5), | |
68 | X64(983e5152, ee66dfab), X64(a831c66d, 2db43210), | |
69 | X64(b00327c8, 98fb213f), X64(bf597fc7, beef0ee4), | |
70 | X64(c6e00bf3, 3da88fc2), X64(d5a79147, 930aa725), | |
71 | X64(06ca6351, e003826f), X64(14292967, 0a0e6e70), | |
72 | X64(27b70a85, 46d22ffc), X64(2e1b2138, 5c26c926), | |
73 | X64(4d2c6dfc, 5ac42aed), X64(53380d13, 9d95b3df), | |
74 | X64(650a7354, 8baf63de), X64(766a0abb, 3c77b2a8), | |
75 | X64(81c2c92e, 47edaee6), X64(92722c85, 1482353b), | |
76 | X64(a2bfe8a1, 4cf10364), X64(a81a664b, bc423001), | |
77 | X64(c24b8b70, d0f89791), X64(c76c51a3, 0654be30), | |
78 | X64(d192e819, d6ef5218), X64(d6990624, 5565a910), | |
79 | X64(f40e3585, 5771202a), X64(106aa070, 32bbd1b8), | |
80 | X64(19a4c116, b8d2d0c8), X64(1e376c08, 5141ab53), | |
81 | X64(2748774c, df8eeb99), X64(34b0bcb5, e19b48a8), | |
82 | X64(391c0cb3, c5c95a63), X64(4ed8aa4a, e3418acb), | |
83 | X64(5b9cca4f, 7763e373), X64(682e6ff3, d6b2b8a3), | |
84 | X64(748f82ee, 5defb2fc), X64(78a5636f, 43172f60), | |
85 | X64(84c87814, a1f0ab72), X64(8cc70208, 1a6439ec), | |
86 | X64(90befffa, 23631e28), X64(a4506ceb, de82bde9), | |
87 | X64(bef9a3f7, b2c67915), X64(c67178f2, e372532b), | |
88 | X64(ca273ece, ea26619c), X64(d186b8c7, 21c0c207), | |
89 | X64(eada7dd6, cde0eb1e), X64(f57d4f7f, ee6ed178), | |
90 | X64(06f067aa, 72176fba), X64(0a637dc5, a2c898a6), | |
91 | X64(113f9804, bef90dae), X64(1b710b35, 131c471b), | |
92 | X64(28db77f5, 23047d84), X64(32caab7b, 40c72493), | |
93 | X64(3c9ebe0a, 15c9bebc), X64(431d67c4, 9c100d4c), | |
94 | X64(4cc5d4be, cb3e42b6), X64(597f299c, fc657e2a), | |
95 | X64(5fcb6fab, 3ad6faec), X64(6c44198c, 4a475817) | |
96 | }; | |
97 | ||
98 | /* --- Fetch the chaining variables --- */ | |
99 | ||
100 | a = ctx->a; | |
101 | b = ctx->b; | |
102 | c = ctx->c; | |
103 | d = ctx->d; | |
104 | e = ctx->e; | |
105 | f = ctx->f; | |
106 | g = ctx->g; | |
107 | h = ctx->h; | |
108 | ||
109 | /* --- Definitions for round functions --- */ | |
110 | ||
111 | #define CH(d, x, y, z) do { \ | |
112 | kludge64 _x; AND64((d), (x), (y)); CPL64(_x, (x)); \ | |
113 | AND64(_x, _x, (z)); OR64((d), (d), _x); \ | |
114 | } while (0) | |
115 | ||
116 | #define MAJ(d, x, y, z) do { \ | |
117 | kludge64 _x; AND64((d), (x), (y)); AND64(_x, (x), (z)); \ | |
118 | OR64((d), (d), _x); AND64(_x, (y), (z)); OR64((d), (d), _x); \ | |
119 | } while (0) | |
120 | ||
121 | #define SIGMA(d, x, i, j, k, last, what) do { \ | |
122 | kludge64 _x; ROR64_((d), (x), (i)); ROR64_(_x, (x), (j)); \ | |
123 | XOR64((d), (d), _x); last##64_(_x, (x), (k)); XOR64((d), (d), _x); \ | |
124 | } while (0) | |
125 | ||
126 | #define S0(d, x) SIGMA(d, x, 28, 34, 39, ROR, S0); | |
127 | #define S1(d, x) SIGMA(d, x, 14, 18, 41, ROR, S1); | |
128 | #define s0(d, x) SIGMA(d, x, 1, 8, 7, LSR, s0); | |
129 | #define s1(d, x) SIGMA(d, x, 19, 61, 6, LSR, s1); | |
130 | ||
131 | #define T(a, b, c, d, e, f, g, h, i) do { \ | |
132 | kludge64 t1, t2, x; \ | |
133 | ADD64(t1, buf[i], K[i]); ADD64(t1, t1, h); \ | |
134 | S1(x, e); ADD64(t1, t1, x); CH(x, e, f, g); ADD64(t1, t1, x); \ | |
135 | S0(t2, a); MAJ(x, a, b, c); ADD64(t2, t2, x); \ | |
136 | ADD64(d, d, t1); ADD64(h, t1, t2); \ | |
137 | } while (0) | |
138 | ||
139 | /* --- Fetch and expand the buffer contents --- */ | |
140 | ||
141 | { | |
142 | const octet *p; | |
143 | ||
144 | for (i = 0, p = sbuf; i < 16; i++, p += 8) | |
145 | LOAD64_(buf[i], p); | |
146 | for (i = 16; i < 80; i++) { | |
147 | kludge64 x; | |
148 | buf[i] = buf[i - 7]; s1(x, buf[i - 2]); ADD64(buf[i], buf[i], x); | |
149 | s0(x, buf[i - 15]); ADD64(buf[i], buf[i], x); | |
150 | ADD64(buf[i], buf[i], buf[i - 16]); | |
151 | } | |
152 | } | |
153 | ||
154 | /* --- The main compression function --- */ | |
155 | ||
156 | for (i = 0; i < 80; i += 8) { | |
157 | T(a, b, c, d, e, f, g, h, i + 0); | |
158 | T(h, a, b, c, d, e, f, g, i + 1); | |
159 | T(g, h, a, b, c, d, e, f, i + 2); | |
160 | T(f, g, h, a, b, c, d, e, i + 3); | |
161 | T(e, f, g, h, a, b, c, d, i + 4); | |
162 | T(d, e, f, g, h, a, b, c, i + 5); | |
163 | T(c, d, e, f, g, h, a, b, i + 6); | |
164 | T(b, c, d, e, f, g, h, a, i + 7); | |
165 | } | |
166 | ||
167 | /* --- Update the chaining variables --- */ | |
168 | ||
169 | ADD64(ctx->a, ctx->a, a); | |
170 | ADD64(ctx->b, ctx->b, b); | |
171 | ADD64(ctx->c, ctx->c, c); | |
172 | ADD64(ctx->d, ctx->d, d); | |
173 | ADD64(ctx->e, ctx->e, e); | |
174 | ADD64(ctx->f, ctx->f, f); | |
175 | ADD64(ctx->g, ctx->g, g); | |
176 | ADD64(ctx->h, ctx->h, h); | |
177 | } | |
178 | ||
179 | /* --- @sha512_init@, @sha384_init@ --- * | |
180 | * | |
181 | * Arguments: @sha512_ctx *ctx@ = pointer to context block to initialize | |
182 | * | |
183 | * Returns: --- | |
184 | * | |
185 | * Use: Initializes a context block ready for hashing. | |
186 | */ | |
187 | ||
188 | void sha512_init(sha512_ctx *ctx) | |
189 | { | |
190 | SET64(ctx->a, 0x6a09e667, 0xf3bcc908); | |
191 | SET64(ctx->b, 0xbb67ae85, 0x84caa73b); | |
192 | SET64(ctx->c, 0x3c6ef372, 0xfe94f82b); | |
193 | SET64(ctx->d, 0xa54ff53a, 0x5f1d36f1); | |
194 | SET64(ctx->e, 0x510e527f, 0xade682d1); | |
195 | SET64(ctx->f, 0x9b05688c, 0x2b3e6c1f); | |
196 | SET64(ctx->g, 0x1f83d9ab, 0xfb41bd6b); | |
197 | SET64(ctx->h, 0x5be0cd19, 0x137e2179); | |
198 | ctx->off = 0; | |
199 | ctx->nh = ctx->nl = 0; | |
200 | } | |
201 | ||
202 | void sha384_init(sha512_ctx *ctx) | |
203 | { | |
204 | SET64(ctx->a, 0xcbbb9d5d, 0xc1059ed8); | |
205 | SET64(ctx->b, 0x629a292a, 0x367cd507); | |
206 | SET64(ctx->c, 0x9159015a, 0x3070dd17); | |
207 | SET64(ctx->d, 0x152fecd8, 0xf70e5939); | |
208 | SET64(ctx->e, 0x67332667, 0xffc00b31); | |
209 | SET64(ctx->f, 0x8eb44a87, 0x68581511); | |
210 | SET64(ctx->g, 0xdb0c2e0d, 0x64f98fa7); | |
211 | SET64(ctx->h, 0x47b5481d, 0xbefa4fa4); | |
212 | ctx->off = 0; | |
213 | ctx->nh = ctx->nl = 0; | |
214 | } | |
215 | ||
216 | /* --- @sha512_set@, @sha384_set@ --- * | |
217 | * | |
218 | * Arguments: @sha512_ctx *ctx@ = pointer to context block | |
219 | * @const void *buf@ = pointer to state buffer | |
220 | * @unsigned long count@ = current count of bytes processed | |
221 | * | |
222 | * Returns: --- | |
223 | * | |
224 | * Use: Initializes a context block from a given state. This is | |
225 | * useful in cases where the initial hash state is meant to be | |
226 | * secret, e.g., for NMAC and HMAC support. | |
227 | */ | |
228 | ||
229 | void sha512_set(sha512_ctx *ctx, const void *buf, unsigned long count) | |
230 | { | |
231 | const octet *p = buf; | |
232 | LOAD64_(ctx->a, p + 0); | |
233 | LOAD64_(ctx->b, p + 8); | |
234 | LOAD64_(ctx->c, p + 16); | |
235 | LOAD64_(ctx->d, p + 24); | |
236 | LOAD64_(ctx->e, p + 32); | |
237 | LOAD64_(ctx->f, p + 40); | |
238 | LOAD64_(ctx->g, p + 48); | |
239 | LOAD64_(ctx->h, p + 56); | |
240 | ctx->off = 0; | |
241 | ctx->nl = U32(count); | |
242 | ctx->nh = U32(((count & ~MASK32) >> 16) >> 16); | |
243 | } | |
244 | ||
245 | /* --- @sha512_hash@, @sha384_hash@ --- * | |
246 | * | |
247 | * Arguments: @sha512_ctx *ctx@ = pointer to context block | |
248 | * @const void *buf@ = buffer of data to hash | |
249 | * @size_t sz@ = size of buffer to hash | |
250 | * | |
251 | * Returns: --- | |
252 | * | |
253 | * Use: Hashes a buffer of data. The buffer may be of any size and | |
254 | * alignment. | |
255 | */ | |
256 | ||
257 | void sha512_hash(sha512_ctx *ctx, const void *buf, size_t sz) | |
258 | { | |
259 | HASH_BUFFER(SHA512, sha512, ctx, buf, sz); | |
260 | } | |
261 | ||
262 | /* --- @sha512_done@, @sha384_done@ --- * | |
263 | * | |
264 | * Arguments: @sha512_ctx *ctx@ = pointer to context block | |
265 | * @void *hash@ = pointer to output buffer | |
266 | * | |
267 | * Returns: --- | |
268 | * | |
269 | * Use: Returns the hash of the data read so far. | |
270 | */ | |
271 | ||
272 | static void final(sha512_ctx *ctx) | |
273 | { | |
274 | HASH_PAD(SHA512, sha512, ctx, 0x80, 0, 16); | |
275 | memset(ctx->buf + SHA512_BUFSZ - 16, 0, 8); | |
276 | STORE32(ctx->buf + SHA512_BUFSZ - 8, (ctx->nl >> 29) | (ctx->nh << 3)); | |
277 | STORE32(ctx->buf + SHA512_BUFSZ - 4, ctx->nl << 3); | |
278 | sha512_compress(ctx, ctx->buf); | |
279 | } | |
280 | ||
281 | void sha512_done(sha512_ctx *ctx, void *hash) | |
282 | { | |
283 | octet *p = hash; | |
284 | final(ctx); | |
45c0fd36 MW |
285 | STORE64_(p + 0, ctx->a); |
286 | STORE64_(p + 8, ctx->b); | |
eee16120 | 287 | STORE64_(p + 16, ctx->c); |
288 | STORE64_(p + 24, ctx->d); | |
289 | STORE64_(p + 32, ctx->e); | |
290 | STORE64_(p + 40, ctx->f); | |
291 | STORE64_(p + 48, ctx->g); | |
292 | STORE64_(p + 56, ctx->h); | |
293 | } | |
294 | ||
295 | void sha384_done(sha384_ctx *ctx, void *hash) | |
296 | { | |
297 | octet *p = hash; | |
298 | final(ctx); | |
45c0fd36 MW |
299 | STORE64_(p + 0, ctx->a); |
300 | STORE64_(p + 8, ctx->b); | |
eee16120 | 301 | STORE64_(p + 16, ctx->c); |
302 | STORE64_(p + 24, ctx->d); | |
303 | STORE64_(p + 32, ctx->e); | |
304 | STORE64_(p + 40, ctx->f); | |
305 | } | |
306 | ||
307 | /* --- @sha512_state@, @sha384_state@ --- * | |
308 | * | |
309 | * Arguments: @sha512_ctx *ctx@ = pointer to context | |
310 | * @void *state@ = pointer to buffer for current state | |
311 | * | |
312 | * Returns: Number of bytes written to the hash function so far. | |
313 | * | |
314 | * Use: Returns the current state of the hash function such that | |
315 | * it can be passed to @sha512_set@. | |
316 | */ | |
317 | ||
318 | unsigned long sha512_state(sha512_ctx *ctx, void *state) | |
319 | { | |
320 | octet *p = state; | |
45c0fd36 MW |
321 | STORE64_(p + 0, ctx->a); |
322 | STORE64_(p + 8, ctx->b); | |
eee16120 | 323 | STORE64_(p + 16, ctx->c); |
324 | STORE64_(p + 24, ctx->d); | |
325 | STORE64_(p + 32, ctx->e); | |
326 | STORE64_(p + 40, ctx->f); | |
327 | STORE64_(p + 48, ctx->g); | |
328 | STORE64_(p + 56, ctx->h); | |
329 | return (ctx->nl | ((ctx->nh << 16) << 16)); | |
330 | } | |
331 | ||
332 | /* --- Generic interface --- */ | |
333 | ||
334 | GHASH_DEF(SHA512, sha512) | |
335 | ||
336 | /* --- Test code --- */ | |
337 | ||
338 | HASH_TEST(SHA512, sha512) | |
339 | ||
340 | /*----- That's all, folks -------------------------------------------------*/ |