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7fcfe7de | 1 | /* -*-c-*- |
2 | * | |
3 | * $Id$ | |
4 | * | |
5 | * Whirlpool hash function | |
6 | * | |
7 | * (c) 2005 Straylight/Edgeware | |
8 | */ | |
9 | ||
45c0fd36 | 10 | /*----- Licensing notice --------------------------------------------------* |
7fcfe7de | 11 | * |
12 | * This file is part of Catacomb. | |
13 | * | |
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. | |
45c0fd36 | 18 | * |
7fcfe7de | 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. | |
45c0fd36 | 23 | * |
7fcfe7de | 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, | |
27 | * MA 02111-1307, USA. | |
28 | */ | |
29 | ||
30 | /*----- Header files ------------------------------------------------------*/ | |
31 | ||
32 | #include <mLib/bits.h> | |
33 | ||
34 | #include "ghash.h" | |
35 | #include "ghash-def.h" | |
36 | #include "hash.h" | |
37 | #include "whirlpool.h" | |
38 | #include "whirlpool-tab.h" | |
39 | ||
40 | #if defined(HAVE_UINT64) | |
41 | # define USE64 | |
42 | #endif | |
43 | ||
44 | /*----- Static variables --------------------------------------------------*/ | |
45 | ||
46 | static const kludge64 C[10] = WHIRLPOOL_C; | |
47 | ||
48 | #ifdef USE64 | |
49 | static const kludge64 T[8][256] = WHIRLPOOL_T; | |
50 | #else | |
51 | static const uint32 U[4][256] = WHIRLPOOL_U, V[4][256] = WHIRLPOOL_V; | |
52 | #endif | |
53 | ||
54 | /*----- Main code ---------------------------------------------------------*/ | |
55 | ||
56 | #define DUMP(k, v) do { \ | |
57 | int i; \ | |
58 | printf("\n"); \ | |
59 | for (i = 0; i < 8; i++) \ | |
45c0fd36 | 60 | printf(" %08x %08x : %08x %08x\n", \ |
7fcfe7de | 61 | HI64(k[i]), LO64(k[i]), \ |
62 | HI64(v[i]), LO64(v[i])); \ | |
63 | } while (0) | |
64 | ||
65 | #define OFFSET(i, n) (((i) + 16 - (n)) % 8) | |
66 | ||
67 | #ifdef USE64 | |
68 | ||
69 | #define BYTE(x, j) \ | |
70 | U8((j) < 4 ? \ | |
71 | (LO64(x) >> ((j) * 8)) : \ | |
72 | (HI64(x) >> ((j) * 8 - 32))) | |
73 | ||
74 | #define TT(v, i, j) T[j][BYTE(v[OFFSET(i, j)], j)] | |
75 | ||
76 | #define XROW(vv, v, i) do { \ | |
77 | XOR64(vv[i], vv[i], TT(v, i, 1)); \ | |
78 | XOR64(vv[i], vv[i], TT(v, i, 2)); \ | |
79 | XOR64(vv[i], vv[i], TT(v, i, 3)); \ | |
80 | XOR64(vv[i], vv[i], TT(v, i, 4)); \ | |
81 | XOR64(vv[i], vv[i], TT(v, i, 5)); \ | |
82 | XOR64(vv[i], vv[i], TT(v, i, 6)); \ | |
83 | XOR64(vv[i], vv[i], TT(v, i, 7)); \ | |
84 | } while (0) | |
85 | ||
86 | #define ROWZ(vv, v, i) do { \ | |
87 | vv[i] = TT(v, i, 0); \ | |
88 | XROW(vv, v, i); \ | |
89 | } while (0) | |
90 | ||
91 | #define ROWK(vv, v, i, k) do { \ | |
92 | vv[i] = k; \ | |
93 | XOR64(vv[i], vv[i], TT(v, i, 0)); \ | |
94 | XROW(vv, v, i); \ | |
95 | } while (0) | |
96 | ||
97 | #else | |
98 | ||
99 | #define BYTE(x, j) U8((x) >> (((j) & 3) * 8)) | |
100 | ||
101 | #define UUL(v, i, j) U[j & 3][BYTE(v[OFFSET(i, j)].lo, j)] | |
102 | #define VVL(v, i, j) V[j & 3][BYTE(v[OFFSET(i, j)].lo, j)] | |
103 | #define UUH(v, i, j) U[j & 3][BYTE(v[OFFSET(i, j)].hi, j)] | |
104 | #define VVH(v, i, j) V[j & 3][BYTE(v[OFFSET(i, j)].hi, j)] | |
105 | ||
106 | #define XROW(vv, v, i) do { \ | |
107 | vv[i].lo ^= UUL(v, i, 1); vv[i].hi ^= VVL(v, i, 1); \ | |
108 | vv[i].lo ^= UUL(v, i, 2); vv[i].hi ^= VVL(v, i, 2); \ | |
109 | vv[i].lo ^= UUL(v, i, 3); vv[i].hi ^= VVL(v, i, 3); \ | |
110 | vv[i].lo ^= VVH(v, i, 4); vv[i].hi ^= UUH(v, i, 4); \ | |
111 | vv[i].lo ^= VVH(v, i, 5); vv[i].hi ^= UUH(v, i, 5); \ | |
112 | vv[i].lo ^= VVH(v, i, 6); vv[i].hi ^= UUH(v, i, 6); \ | |
113 | vv[i].lo ^= VVH(v, i, 7); vv[i].hi ^= UUH(v, i, 7); \ | |
114 | } while (0) | |
115 | ||
116 | #define ROWZ(vv, v, i) do { \ | |
117 | vv[i].lo = UUL(v, i, 0); vv[i].hi = VVL(v, i, 0); \ | |
118 | XROW(vv, v, i); \ | |
119 | } while (0) | |
120 | ||
121 | #define ROWK(vv, v, i, k) do { \ | |
122 | vv[i] = k; \ | |
123 | vv[i].lo ^= UUL(v, i, 0); vv[i].hi ^= VVL(v, i, 0); \ | |
124 | XROW(vv, v, i); \ | |
125 | } while (0) | |
45c0fd36 | 126 | |
7fcfe7de | 127 | #endif |
128 | ||
129 | #define RHO(vv, v, kk, k) do { \ | |
45c0fd36 MW |
130 | ROWK(kk, k, 0, *c++); ROWK(vv, v, 0, kk[0]); \ |
131 | ROWZ(kk, k, 1); ROWK(vv, v, 1, kk[1]); \ | |
132 | ROWZ(kk, k, 2); ROWK(vv, v, 2, kk[2]); \ | |
133 | ROWZ(kk, k, 3); ROWK(vv, v, 3, kk[3]); \ | |
134 | ROWZ(kk, k, 4); ROWK(vv, v, 4, kk[4]); \ | |
135 | ROWZ(kk, k, 5); ROWK(vv, v, 5, kk[5]); \ | |
136 | ROWZ(kk, k, 6); ROWK(vv, v, 6, kk[6]); \ | |
137 | ROWZ(kk, k, 7); ROWK(vv, v, 7, kk[7]); \ | |
7fcfe7de | 138 | } while (0) |
139 | ||
140 | void whirlpool_compress(whirlpool_ctx *ctx, const void *sbuf) | |
141 | { | |
142 | kludge64 m[8], k[8], kk[8], v[8], vv[8]; | |
143 | const kludge64 *c = C; | |
144 | const octet *s = sbuf; | |
145 | int i; | |
45c0fd36 | 146 | |
7fcfe7de | 147 | for (i = 0; i < 8; i++) { |
148 | LOAD64_L_(m[i], &s[i * 8]); | |
149 | XOR64(v[i], m[i], ctx->s[i]); | |
150 | } | |
151 | ||
152 | RHO(vv, v, kk, ctx->s); | |
153 | RHO(v, vv, k, kk); | |
154 | RHO(vv, v, kk, k); | |
155 | RHO(v, vv, k, kk); | |
156 | RHO(vv, v, kk, k); | |
157 | RHO(v, vv, k, kk); | |
158 | RHO(vv, v, kk, k); | |
159 | RHO(v, vv, k, kk); | |
160 | RHO(vv, v, kk, k); | |
161 | RHO(v, vv, k, kk); | |
162 | ||
163 | for (i = 0; i < 8; i++) { | |
164 | XOR64(ctx->s[i], ctx->s[i], m[i]); | |
165 | XOR64(ctx->s[i], ctx->s[i], v[i]); | |
166 | } | |
167 | } | |
168 | ||
169 | /* --- @whirlpool_init@, @whirlpool256_init@ --- * | |
170 | * | |
171 | * Arguments: @whirlpool_ctx *ctx@ = pointer to context block to initialize | |
172 | * | |
173 | * Returns: --- | |
174 | * | |
175 | * Use: Initializes a context block ready for hashing. | |
176 | */ | |
177 | ||
178 | void whirlpool_init(whirlpool_ctx *ctx) | |
179 | { | |
180 | int i; | |
181 | ||
182 | for (i = 0; i < 8; i++) | |
183 | SET64(ctx->s[i], 0, 0); | |
184 | ctx->off = 0; | |
185 | ctx->nh = ctx->nl = 0; | |
186 | } | |
187 | ||
188 | /* --- @whirlpool_set@, @whirlpool256_set@ --- * | |
189 | * | |
190 | * Arguments: @whirlpool_ctx *ctx@ = pointer to context block | |
191 | * @const void *buf@ = pointer to state buffer | |
192 | * @unsigned long count@ = current count of bytes processed | |
193 | * | |
194 | * Returns: --- | |
195 | * | |
196 | * Use: Initializes a context block from a given state. This is | |
197 | * useful in cases where the initial hash state is meant to be | |
198 | * secret, e.g., for NMAC and HMAC support. | |
199 | */ | |
200 | ||
201 | void whirlpool_set(whirlpool_ctx *ctx, const void *buf, unsigned long count) | |
202 | { | |
203 | const octet *p = buf; | |
204 | int i; | |
205 | ||
206 | for (i = 0; i < 8; i++) { | |
207 | LOAD64_L_(ctx->s[i], p); | |
208 | p += 8; | |
209 | } | |
210 | ctx->off = 0; | |
211 | ctx->nl = U32(count); | |
212 | ctx->nh = U32(((count & ~MASK32) >> 16) >> 16); | |
213 | } | |
214 | ||
215 | /* --- @whirlpool_hash@, @whirlpool256_hash@ --- * | |
216 | * | |
217 | * Arguments: @whirlpool_ctx *ctx@ = pointer to context block | |
218 | * @const void *buf@ = buffer of data to hash | |
219 | * @size_t sz@ = size of buffer to hash | |
220 | * | |
221 | * Returns: --- | |
222 | * | |
223 | * Use: Hashes a buffer of data. The buffer may be of any size and | |
224 | * alignment. | |
225 | */ | |
226 | ||
227 | void whirlpool_hash(whirlpool_ctx *ctx, const void *buf, size_t sz) | |
228 | { | |
229 | HASH_BUFFER(WHIRLPOOL, whirlpool, ctx, buf, sz); | |
230 | } | |
231 | ||
232 | /* --- @whirlpool_done@, @whirlpool256_done@ --- * | |
233 | * | |
234 | * Arguments: @whirlpool_ctx *ctx@ = pointer to context block | |
235 | * @void *hash@ = pointer to output buffer | |
236 | * | |
237 | * Returns: --- | |
238 | * | |
239 | * Use: Returns the hash of the data read so far. | |
240 | */ | |
241 | ||
242 | static void final(whirlpool_ctx *ctx) | |
243 | { | |
244 | HASH_PAD(WHIRLPOOL, whirlpool, ctx, 0x80, 0, 32); | |
245 | memset(ctx->buf + WHIRLPOOL_BUFSZ - 32, 0, 24); | |
45c0fd36 MW |
246 | STORE32(ctx->buf + WHIRLPOOL_BUFSZ - 8, (ctx->nl >> 29) | (ctx->nh << 3)); |
247 | STORE32(ctx->buf + WHIRLPOOL_BUFSZ - 4, ctx->nl << 3); | |
7fcfe7de | 248 | whirlpool_compress(ctx, ctx->buf); |
249 | } | |
250 | ||
251 | void whirlpool_done(whirlpool_ctx *ctx, void *hash) | |
252 | { | |
253 | octet *p = hash; | |
254 | int i; | |
255 | ||
256 | final(ctx); | |
257 | for (i = 0; i < 8; i++) { | |
258 | STORE64_L_(p, ctx->s[i]); | |
259 | p += 8; | |
260 | } | |
261 | } | |
262 | ||
263 | void whirlpool256_done(whirlpool256_ctx *ctx, void *hash) | |
264 | { | |
265 | octet *p = hash; | |
266 | int i; | |
267 | ||
268 | final(ctx); | |
269 | for (i = 0; i < 4; i++) { | |
270 | STORE64_L_(p, ctx->s[i]); | |
271 | p += 8; | |
272 | } | |
273 | } | |
274 | ||
275 | /* --- @whirlpool_state@, @whirlpool256_state@ --- * | |
276 | * | |
277 | * Arguments: @whirlpool_ctx *ctx@ = pointer to context | |
278 | * @void *state@ = pointer to buffer for current state | |
279 | * | |
280 | * Returns: Number of bytes written to the hash function so far. | |
281 | * | |
282 | * Use: Returns the current state of the hash function such that | |
283 | * it can be passed to @whirlpool_set@. | |
284 | */ | |
285 | ||
286 | unsigned long whirlpool_state(whirlpool_ctx *ctx, void *state) | |
287 | { | |
288 | octet *p = state; | |
289 | int i; | |
290 | ||
291 | for (i = 0; i < 8; i++) { | |
292 | STORE64_L_(p, ctx->s[i]); | |
293 | p += 8; | |
294 | } | |
295 | return (ctx->nl | ((ctx->nh << 16) << 16)); | |
296 | } | |
297 | ||
298 | /* --- Generic interface --- */ | |
299 | ||
300 | GHASH_DEF(WHIRLPOOL, whirlpool) | |
301 | ||
302 | /* --- Test code --- */ | |
303 | ||
304 | HASH_TEST(WHIRLPOOL, whirlpool) | |
305 | ||
306 | /*----- That's all, folks -------------------------------------------------*/ |