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d03ab969 | 1 | /* -*-c-*- |
d03ab969 | 2 | * |
3 | * Common definitions for block ciphers | |
4 | * | |
5 | * (c) 1999 Straylight/Edgeware | |
6 | */ | |
7 | ||
45c0fd36 | 8 | /*----- Licensing notice --------------------------------------------------* |
d03ab969 | 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 | * |
d03ab969 | 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 | * |
d03ab969 | 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 | ||
b3f05084 | 28 | #ifndef CATACOMB_BLKC_H |
29 | #define CATACOMB_BLKC_H | |
d03ab969 | 30 | |
31 | #ifdef __cplusplus | |
32 | extern "C" { | |
33 | #endif | |
34 | ||
35 | /*----- Header files ------------------------------------------------------*/ | |
36 | ||
c5885da8 | 37 | #include <assert.h> |
38 | ||
d03ab969 | 39 | #include <mLib/bits.h> |
40 | ||
41 | /*----- Theory of operation -----------------------------------------------* | |
42 | * | |
43 | * A block cipher has associated with it a triple, called PRE_CLASS, of the | |
44 | * form `(TYPE, ENDIAN, BITS)', where TYPE is either `N' (representing an | |
45 | * implemented bit size) or `X' (representing an unimplemented bit size, | |
46 | * causing loops to be compiled rather than unrolled code), ENDIAN is `B' | |
47 | * (big) or `L' (little), and BITS is the block size of the cipher in bits. | |
48 | */ | |
49 | ||
50 | /*----- Data movement macros ----------------------------------------------*/ | |
51 | ||
52 | /* | |
53 | * `The C preprocessor. You will never find a more wretched hive of bogus | |
54 | * hackery. We must be cautious.' | |
55 | */ | |
56 | ||
57 | /* --- General dispatch macros --- */ | |
58 | ||
59 | #define BLKC_DOGLUE(x, y) x ## y | |
60 | #define BLKC_GLUE(x, y) BLKC_DOGLUE(x, y) | |
61 | #define BLKC_APPLY(f, x) f x | |
62 | #define BLKC_FIRST(x, y, z) x | |
63 | #define BLKC_SECOND(x, y, z) y | |
64 | #define BLKC_THIRD(x, y, z) z | |
b3f05084 | 65 | #define BLKC_TYPE(PRE) BLKC_APPLY(BLKC_FIRST, PRE##_CLASS) |
66 | #define BLKC_ENDIAN(PRE) BLKC_APPLY(BLKC_SECOND, PRE##_CLASS) | |
67 | #define BLKC_BITS(PRE) BLKC_APPLY(BLKC_THIRD, PRE##_CLASS) | |
d03ab969 | 68 | |
69 | #define BLKC_STORE_E(PRE) BLKC_GLUE(STORE32_, BLKC_ENDIAN(PRE)) | |
70 | #define BLKC_LOAD_E(PRE) BLKC_GLUE(LOAD32_, BLKC_ENDIAN(PRE)) | |
71 | ||
6dc589ef MW |
72 | #define BLKC_ID(x) (x) |
73 | ||
d03ab969 | 74 | /* --- Interface macros --- */ |
75 | ||
76 | #define BLKC_STORE(PRE, b, w) \ | |
77 | BLKC_GLUE(BLKC_STORE_, BLKC_TYPE(PRE)) \ | |
78 | (PRE, b, w, BLKC_STORE_E(PRE), BLKC_BITS(PRE)) | |
79 | ||
80 | #define BLKC_XSTORE(PRE, b, w, wx) \ | |
81 | BLKC_GLUE(BLKC_XSTORE_, BLKC_TYPE(PRE)) \ | |
82 | (PRE, b, w, wx, BLKC_STORE_E(PRE), BLKC_BITS(PRE)) | |
83 | ||
84 | #define BLKC_LOAD(PRE, w, b) \ | |
85 | BLKC_GLUE(BLKC_LOAD_, BLKC_TYPE(PRE)) \ | |
86 | (PRE, w, b, BLKC_LOAD_E(PRE), BLKC_BITS(PRE)) | |
87 | ||
88 | #define BLKC_XLOAD(PRE, w, b) \ | |
89 | BLKC_GLUE(BLKC_XLOAD_, BLKC_TYPE(PRE)) \ | |
90 | (PRE, w, b, BLKC_LOAD_E(PRE), BLKC_BITS(PRE)) | |
91 | ||
92 | #define BLKC_MOVE(PRE, w, wx) \ | |
93 | BLKC_GLUE(BLKC_MOVE_, BLKC_TYPE(PRE)) \ | |
94 | (PRE, w, wx, BLKC_BITS(PRE)) | |
95 | ||
96 | #define BLKC_XMOVE(PRE, w, wx) \ | |
97 | BLKC_GLUE(BLKC_XMOVE_, BLKC_TYPE(PRE)) \ | |
98 | (PRE, w, wx, BLKC_BITS(PRE)) | |
99 | ||
6dc589ef MW |
100 | #define BLKC_BSTEP(PRE, w) BLKC_BADD(PRE, w, 1) |
101 | #define BLKC_LSTEP(PRE, w) BLKC_LADD(PRE, w, 1) | |
8ff32af3 MW |
102 | #define BLKC_STEP(PRE, w) BLKC_ADD(PRE, w, 1) |
103 | ||
6dc589ef MW |
104 | #define BLKC_BADD(PRE, w, n) \ |
105 | BLKC_GLUE(BLKC_BADD_X_, BLKC_ENDIAN(PRE)) \ | |
106 | (PRE, w, n) | |
107 | #define BLKC_LADD(PRE, w, n) \ | |
108 | BLKC_GLUE(BLKC_LADD_X_, BLKC_ENDIAN(PRE)) \ | |
109 | (PRE, w, n) | |
8ff32af3 MW |
110 | #define BLKC_ADD(PRE, w, n) \ |
111 | BLKC_GLUE(BLKC_ADD_X_, BLKC_ENDIAN(PRE)) \ | |
6dc589ef | 112 | (PRE, BLKC_ID, w, n) |
c5885da8 | 113 | |
5c3f75ec | 114 | #define BLKC_ZERO(PRE, w) \ |
115 | BLKC_GLUE(BLKC_ZERO_, BLKC_TYPE(PRE)) \ | |
116 | (PRE, w, BLKC_BITS(PRE)) | |
117 | ||
6dc589ef MW |
118 | #define BLKC_BSET(PRE, w, x) \ |
119 | BLKC_GLUE(BLKC_BSET_X_, BLKC_ENDIAN(PRE)) \ | |
120 | (PRE, w, x) | |
121 | #define BLKC_LSET(PRE, w, x) \ | |
122 | BLKC_GLUE(BLKC_LSET_X_, BLKC_ENDIAN(PRE)) \ | |
123 | (PRE, w, x) | |
c5885da8 | 124 | #define BLKC_SET(PRE, w, x) \ |
125 | BLKC_GLUE(BLKC_SET_X_, BLKC_ENDIAN(PRE)) \ | |
6dc589ef MW |
126 | (PRE, BLKC_ID, w, x) |
127 | ||
128 | #define BLKC_BWORD(PRE, x) BLKC_GLUE(BLKC_BWORD_, BLKC_ENDIAN(PRE))(x) | |
129 | #define BLKC_LWORD(PRE, x) BLKC_GLUE(BLKC_LWORD_, BLKC_ENDIAN(PRE))(x) | |
c5885da8 | 130 | |
131 | #define BLKC_SHOW(PRE, tag, w) do { \ | |
132 | fputs(tag ": ", stdout); \ | |
6dc589ef MW |
133 | BLKC_SKEL_X(PRE, const BLKC_W(w);, \ |
134 | { printf("%08x ", BLKC_BWORD(PRE, *_w)); _w++; }); \ | |
c5885da8 | 135 | fputc('\n', stdout); \ |
136 | } while (0) | |
137 | ||
8ff32af3 MW |
138 | /* --- Utilities --- * |
139 | * | |
140 | * These seem too hard to properly generalize, or I'd have put them in | |
141 | * <mLib/bits.h>. | |
142 | */ | |
143 | ||
144 | #ifdef HAVE_UINT64 | |
6dc589ef MW |
145 | # define BLKC_ADDC32(op, z_out, c_out, x, y) do { \ |
146 | uint64 _t = (uint64)op(x) + (y); \ | |
147 | (z_out) = U32(op(_t)); (c_out) = _t >> 32; \ | |
8ff32af3 MW |
148 | } while (0) |
149 | #else | |
6dc589ef MW |
150 | # define BLKC_ADDC32(op, z_out, c_out, x, y) do { \ |
151 | uint32 _x = op(x), _c = 0, _t; \ | |
152 | _t = U32(_x + (y)); (z_out) = op(_t); (c_out) = (_t < _x); \ | |
8ff32af3 MW |
153 | } while (0) |
154 | #endif | |
155 | ||
d03ab969 | 156 | /* --- General implementation skeleton --- */ |
157 | ||
158 | #define BLKC_SKEL(PRE, decl, guts) do { \ | |
159 | decl \ | |
160 | guts \ | |
161 | } while (0) | |
162 | ||
0fee61eb MW |
163 | #define BLKC_P(p) octet *_p = (octet *)(p) |
164 | #define BLKC_W(w) uint32 *_w = (w) | |
165 | #define BLKC_WX(wx) uint32 *_wx = (wx) | |
d03ab969 | 166 | |
167 | /* --- Implementation for unusual block sizes --- */ | |
168 | ||
169 | #define BLKC_SKEL_X(PRE, decl, guts) \ | |
c5885da8 | 170 | BLKC_SKEL(PRE, unsigned _i; decl, \ |
0fee61eb | 171 | for (_i = 0; _i < PRE##_BLKSZ/4; _i++) { \ |
d03ab969 | 172 | guts \ |
173 | }) | |
174 | ||
175 | #define BLKC_STORE_X(PRE, b, w, op, n) \ | |
176 | BLKC_SKEL_X(PRE, BLKC_P(b); const BLKC_W(w);, \ | |
177 | op(_p, *_w); _p += 4; _w++; ) | |
178 | ||
179 | #define BLKC_XSTORE_X(PRE, b, w, wx, op, n) \ | |
180 | BLKC_SKEL_X(PRE, BLKC_P(b); const BLKC_W(w); const BLKC_WX(wx);, \ | |
181 | op(_p, *_w ^ *_wx); _p += 4; _w++; _wx++; ) | |
182 | ||
183 | #define BLKC_LOAD_X(PRE, w, b, op, n) \ | |
184 | BLKC_SKEL_X(PRE, const BLKC_P(b); BLKC_W(w);, \ | |
185 | *_w = op(_p); _p += 4; _w++; ) | |
186 | ||
187 | #define BLKC_XLOAD_X(PRE, w, b, op, n) \ | |
188 | BLKC_SKEL_X(PRE, const BLKC_P(b); BLKC_W(w);, \ | |
189 | *_w ^= op(_p); _p += 4; _w++; ) | |
190 | ||
191 | #define BLKC_MOVE_X(PRE, w, wx, n) \ | |
192 | BLKC_SKEL_X(PRE, BLKC_W(w); const BLKC_WX(wx);, \ | |
193 | *_w = *_wx; _w++; _wx++; ) \ | |
194 | ||
195 | #define BLKC_XMOVE_X(PRE, w, wx, n) \ | |
196 | BLKC_SKEL_X(PRE, BLKC_W(w); const BLKC_WX(wx);, \ | |
197 | *_w ^= *_wx; _w++; _wx++; ) \ | |
198 | ||
5c3f75ec | 199 | #define BLKC_ZERO_X(PRE, w, n) \ |
200 | BLKC_SKEL_X(PRE, BLKC_W(w);, *_w++ = 0;) | |
201 | ||
6dc589ef MW |
202 | #define BLKC_BADD_X_B(PRE, w, n) BLKC_ADD_X_B(PRE, BLKC_ID, w, n) |
203 | #define BLKC_BADD_X_L(PRE, w, n) BLKC_ADD_X_B(PRE, ENDSWAP32, w, n) | |
204 | #define BLKC_LADD_X_B(PRE, w, n) BLKC_ADD_X_L(PRE, ENDSWAP32, w, n) | |
205 | #define BLKC_LADD_X_L(PRE, w, n) BLKC_ADD_X_L(PRE, BLKC_ID, w, n) | |
206 | ||
207 | #define BLKC_ADD_X_B(PRE, op, w, n) do { \ | |
8ff32af3 | 208 | unsigned _i = PRE##_BLKSZ/4; BLKC_W(w); uint32 _n = (n); \ |
6dc589ef | 209 | while (_i-- && _n) BLKC_ADDC32(op, _w[_i], _n, _w[_i], _n); \ |
c5885da8 | 210 | } while (0) |
211 | ||
6dc589ef | 212 | #define BLKC_ADD_X_L(PRE, op, w, n) do { \ |
8ff32af3 MW |
213 | unsigned _i = 0; BLKC_W(w); uint32 _n = (n); \ |
214 | while (_i < PRE##_BLKSZ/4 && _n) \ | |
6dc589ef | 215 | { BLKC_ADDC32(op, _w[_i], _n, _w[_i], _n); _i++; } \ |
c5885da8 | 216 | } while (0) |
217 | ||
6dc589ef MW |
218 | #define BLKC_BSET_X_B(PRE, w, x) BLKC_SET_X_B(PRE, BLKC_ID, w, x) |
219 | #define BLKC_BSET_X_L(PRE, w, x) BLKC_SET_X_B(PRE, ENDSWAP32, w, x) | |
220 | #define BLKC_LSET_X_B(PRE, w, x) BLKC_SET_X_L(PRE, ENDSWAP32, w, x) | |
221 | #define BLKC_LSET_X_L(PRE, w, x) BLKC_SET_X_L(PRE, BLKC_ID, w, x) | |
222 | ||
223 | #define BLKC_SET_X_B(PRE, op, w, x) do { \ | |
224 | unsigned _i; BLKC_W(w); unsigned long _x = x; _w += PRE##_BLKSZ/4; \ | |
0fee61eb | 225 | for (_i = 0; _i < PRE##_BLKSZ/4; _i++) { \ |
6dc589ef | 226 | *--_w = U32(op(_x)); \ |
e91d142c | 227 | _x = ((_x & ~(unsigned long)MASK32) >> 16) >> 16; \ |
c5885da8 | 228 | } \ |
229 | } while (0) | |
230 | ||
6dc589ef MW |
231 | #define BLKC_SET_X_L(PRE, op, w, x) do { \ |
232 | unsigned _i; BLKC_W(w); unsigned long _x = x; \ | |
0fee61eb | 233 | for (_i = 0; _i < PRE##_BLKSZ/4; _i++) { \ |
6dc589ef | 234 | *_w++ = U32(op(_x)); \ |
e91d142c | 235 | _x = ((_x & ~(unsigned long)MASK32) >> 16) >> 16; \ |
c5885da8 | 236 | } \ |
237 | } while (0) | |
238 | ||
6dc589ef MW |
239 | #define BLKC_BWORD_B(x) (x) |
240 | #define BLKC_BWORD_L(x) ENDSWAP32(x) | |
241 | #define BLKC_LWORD_B(x) ENDSWAP32(x) | |
242 | #define BLKC_LWORD_L(x) (x) | |
243 | ||
d03ab969 | 244 | /* --- Implementation for known block sizes --- */ |
245 | ||
246 | #define BLKC_SKEL_64(PRE, decl, op, guts) \ | |
247 | BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1);) | |
248 | ||
c5885da8 | 249 | #define BLKC_SKEL_96(PRE, decl, op, guts) \ |
250 | BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1); guts(op, 2);) | |
251 | ||
d03ab969 | 252 | #define BLKC_SKEL_128(PRE, decl, op, guts) \ |
253 | BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3);) | |
254 | ||
70f31709 | 255 | #define BLKC_SKEL_192(PRE, decl, op, guts) \ |
256 | BLKC_SKEL(PRE, decl, \ | |
257 | guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3); \ | |
258 | guts(op, 4); guts(op, 5);) | |
259 | ||
260 | #define BLKC_SKEL_256(PRE, decl, op, guts) \ | |
261 | BLKC_SKEL(PRE, decl, \ | |
262 | guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3); \ | |
263 | guts(op, 4); guts(op, 5); guts(op, 6); guts(op, 7);) | |
264 | ||
d03ab969 | 265 | #define BLKC_STORE_GUTS(op, i) op(_p + 4 * i, _w[i]) |
266 | #define BLKC_XSTORE_GUTS(op, i) op(_p + 4 * i, _w[i] ^ _wx[i]) | |
267 | #define BLKC_LOAD_GUTS(op, i) _w[i] = op(_p + 4 * i) | |
268 | #define BLKC_XLOAD_GUTS(op, i) _w[i] ^= op(_p + 4 * i) | |
269 | #define BLKC_MOVE_GUTS(op, i) _w[i] = _wx[i] | |
270 | #define BLKC_XMOVE_GUTS(op, i) _w[i] ^= _wx[i] | |
5c3f75ec | 271 | #define BLKC_ZERO_GUTS(op, i) _w[i] = 0 |
d03ab969 | 272 | |
273 | #define BLKC_STORE_N(PRE, b, w, op, n) \ | |
274 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
275 | (PRE, BLKC_P(b); const BLKC_W(w);, op, BLKC_STORE_GUTS) | |
276 | ||
277 | #define BLKC_XSTORE_N(PRE, b, w, wx, op, n) \ | |
278 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
279 | (PRE, BLKC_P(b); const BLKC_W(w); const BLKC_WX(wx);, \ | |
280 | op, BLKC_XSTORE_GUTS) | |
281 | ||
282 | #define BLKC_LOAD_N(PRE, w, b, op, n) \ | |
283 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
284 | (PRE, const BLKC_P(b); BLKC_W(w);, op, BLKC_LOAD_GUTS) | |
285 | ||
286 | #define BLKC_XLOAD_N(PRE, w, b, op, n) \ | |
287 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
288 | (PRE, const BLKC_P(b); BLKC_W(w);, op, BLKC_XLOAD_GUTS) | |
289 | ||
290 | #define BLKC_MOVE_N(PRE, w, wx, n) \ | |
291 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
292 | (PRE, BLKC_W(w); const BLKC_WX(wx);, op, BLKC_MOVE_GUTS) | |
293 | ||
5c3f75ec | 294 | #define BLKC_ZERO_N(PRE, w, n) \ |
295 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
296 | (PRE, BLKC_W(w); , op, BLKC_ZERO_GUTS) | |
297 | ||
d03ab969 | 298 | #define BLKC_XMOVE_N(PRE, w, wx, n) \ |
299 | BLKC_GLUE(BLKC_SKEL_, n) \ | |
300 | (PRE, BLKC_W(w); const BLKC_WX(wx);, op, BLKC_XMOVE_GUTS) | |
301 | ||
1655e4a0 MW |
302 | /*----- Binary field arithmetic -------------------------------------------*/ |
303 | ||
304 | #define BLKC_POLY_IRRED64 0x001b | |
305 | #define BLKC_POLY_IRRED96 0x0641 | |
306 | #define BLKC_POLY_IRRED128 0x0087 | |
307 | #define BLKC_POLY_IRRED192 0x0087 | |
308 | #define BLKC_POLY_IRRED256 0x0425 | |
309 | ||
310 | #define BLKC_POLY_PRIM64 0x001b | |
311 | #define BLKC_POLY_PRIM96 0x0641 | |
312 | #define BLKC_POLY_PRIM128 0x0087 | |
313 | #define BLKC_POLY_PRIM192 0x8821 | |
314 | #define BLKC_POLY_PRIM256 0x0425 | |
315 | ||
316 | #define BLKC_POLY(PRE, f) BLKC_GLUE(BLKC_POLY_##f, BLKC_BITS(PRE)) | |
317 | ||
318 | #define BLKC_BLSHIFT(PRE, f, z, x) \ | |
319 | BLKC_GLUE(BLKC_BLSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
320 | (PRE, f, z, x) | |
321 | #define BLKC_LLSHIFT(PRE, f, z, x) \ | |
322 | BLKC_GLUE(BLKC_LLSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
323 | (PRE, f, z, x) | |
324 | #define BLKC_LSHIFT(PRE, f, z, x) \ | |
325 | BLKC_GLUE(BLKC_LSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
326 | (PRE, BLKC_ID, f, z, x) | |
327 | ||
328 | #define BLKC_BRSHIFT(PRE, f, z, x) \ | |
329 | BLKC_GLUE(BLKC_BRSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
330 | (PRE, f, z, x) | |
331 | #define BLKC_LRSHIFT(PRE, f, z, x) \ | |
332 | BLKC_GLUE(BLKC_LRSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
333 | (PRE, f, z, x) | |
334 | #define BLKC_RSHIFT(PRE, f, z, x) \ | |
335 | BLKC_GLUE(BLKC_RSHIFT_X_, BLKC_ENDIAN(PRE)) \ | |
336 | (PRE, BLKC_ID, f, z, x) | |
337 | ||
338 | #define BLKC_BLSHIFT_X_B(PRE, f, z, x) BLKC_LSHIFT_X_B(PRE, BLKC_ID, f, z, x) | |
339 | #define BLKC_LLSHIFT_X_B(PRE, f, z, x) BLKC_LSHIFT_X_L(PRE, ENDSWAP32, f, z, x) | |
340 | #define BLKC_BLSHIFT_X_L(PRE, f, z, x) BLKC_LSHIFT_X_B(PRE, ENDSWAP32, f, z, x) | |
341 | #define BLKC_LLSHIFT_X_L(PRE, f, z, x) BLKC_LSHIFT_X_L(PRE, BLKC_ID, f, z, x) | |
342 | ||
343 | #define BLKC_BRSHIFT_X_B(PRE, f, z, x) BLKC_RSHIFT_X_B(PRE, BLKC_ID, f, z, x) | |
344 | #define BLKC_LRSHIFT_X_B(PRE, f, z, x) BLKC_RSHIFT_X_L(PRE, ENDSWAP32, f, z, x) | |
345 | #define BLKC_BRSHIFT_X_L(PRE, f, z, x) BLKC_RSHIFT_X_B(PRE, ENDSWAP32, f, z, x) | |
346 | #define BLKC_LRSHIFT_X_L(PRE, f, z, x) BLKC_RSHIFT_X_L(PRE, BLKC_ID, f, z, x) | |
347 | ||
348 | #define BLKC_LSHIFT_X_B(PRE, op, f, z, x) do { \ | |
349 | uint32 *_z = (z); const uint32 *_x = (x); \ | |
350 | uint32 _t = op(_x[0]), _m = -(uint32)((_t >> 31)&1u), \ | |
351 | _c = BLKC_POLY(PRE, f)&_m; \ | |
352 | unsigned _i; \ | |
353 | \ | |
354 | for (_i = PRE##_BLKSZ/4; _i-- > 0; ) \ | |
355 | { _t = op(_x[_i]); _z[_i] = op((_t << 1) ^ _c); _c = (_t >> 31)&1u; } \ | |
356 | } while (0) | |
357 | ||
358 | #define BLKC_RSHIFT_X_B(PRE, op, f, z, x) do { \ | |
359 | uint32 *_z = (z); const uint32 *_x = (x); \ | |
360 | uint32 _t, _t0 = op(_x[PRE##_BLKSZ/4 - 1]), _m = -(uint32)(_t0&1u), \ | |
361 | _c = 0x80000000&_m; \ | |
362 | unsigned _i; \ | |
363 | \ | |
364 | for (_i = 0; _i < PRE##_BLKSZ/4 - 1; _i++) \ | |
365 | { _t = op(_x[_i]); _z[_i] = op((_t >> 1) ^ _c); _c = (_t&1u) << 31; } \ | |
366 | _t0 ^= BLKC_POLY(PRE, f)&_m; _z[PRE##_BLKSZ/4 - 1] = op((_t0 >> 1) ^ _c); \ | |
367 | } while (0) | |
368 | ||
369 | #define BLKC_LSHIFT_X_L(PRE, op, f, z, x) do { \ | |
370 | uint32 *_z = (z); const uint32 *_x = (x); \ | |
371 | uint32 _t = op(_x[PRE##_BLKSZ/4 - 1]), _m = -(uint32)((_t >> 31)&1u), \ | |
372 | _c = BLKC_POLY(PRE, f)&_m; \ | |
373 | unsigned _i; \ | |
374 | \ | |
375 | for (_i = 0; _i < PRE##_BLKSZ/4; _i++) \ | |
376 | { _t = op(_x[_i]); _z[_i] = op((_t << 1) ^ _c); _c = (_t >> 31)&1u; } \ | |
377 | } while (0) | |
378 | ||
379 | #define BLKC_RSHIFT_X_L(PRE, op, f, z, x) do { \ | |
380 | uint32 *_z = (z); const uint32 *_x = (x); \ | |
381 | uint32 _t, _t0 = op(_x[0]), _m = -(uint32)(_t0&1u), \ | |
382 | _c = 0x80000000&_m; \ | |
383 | unsigned _i; \ | |
384 | \ | |
385 | for (_i = PRE##_BLKSZ/4 - 1; _i-- > 1; ) \ | |
386 | { _t = op(_x[_i]); _z[_i] = op((_t >> 1) ^ _c); _c = (_t&1u) << 31; } \ | |
387 | _t0 ^= BLKC_POLY(PRE, f)&_m; _z[0] = op((_t0 >> 1) ^ _c); \ | |
388 | } while (0) | |
389 | ||
d03ab969 | 390 | /*----- Test rig for block ciphers ----------------------------------------*/ |
391 | ||
392 | /* --- @BLKC_TEST@ --- * | |
393 | * | |
394 | * Arguments: @PRE@, @pre@ = prefixes for cipher-specific definitions | |
395 | * | |
396 | * Use: Standard test rig for block ciphers. | |
397 | */ | |
398 | ||
399 | #ifdef TEST_RIG | |
400 | ||
f94b972d | 401 | #include <string.h> |
45c0fd36 | 402 | |
141c1284 | 403 | #include <mLib/macros.h> |
d03ab969 | 404 | #include <mLib/quis.h> |
405 | #include <mLib/testrig.h> | |
406 | ||
c76bf871 MW |
407 | #ifndef BLKC_TESTHOOK |
408 | # define BLKC_TESTHOOK do ; while (0) | |
409 | #endif | |
410 | ||
aaae9cab MW |
411 | #define BLKC_VERIFY(PRE, pre) BLKC_VERIFYX(PRE, pre, #pre) |
412 | ||
413 | #define BLKC_VERIFYX(PRE, pre, name) \ | |
d03ab969 | 414 | \ |
dcdc42e7 | 415 | static int pre##_verify(dstr *v) \ |
d03ab969 | 416 | { \ |
b3f05084 | 417 | pre##_ctx k; \ |
0fee61eb MW |
418 | uint32 p[PRE##_BLKSZ/4]; \ |
419 | uint32 c[PRE##_BLKSZ/4]; \ | |
420 | uint32 d[PRE##_BLKSZ/4]; \ | |
d03ab969 | 421 | dstr b = DSTR_INIT; \ |
422 | int ok = 1; \ | |
423 | \ | |
424 | /* --- Initialize the key buffer --- */ \ | |
425 | \ | |
b3f05084 | 426 | dstr_ensure(&b, PRE##_BLKSZ); \ |
427 | b.len = PRE##_BLKSZ; \ | |
428 | pre##_init(&k, v[0].buf, v[0].len); \ | |
d03ab969 | 429 | BLKC_LOAD(PRE, p, v[1].buf); \ |
430 | BLKC_LOAD(PRE, c, v[2].buf); \ | |
431 | \ | |
432 | /* --- Test encryption --- */ \ | |
433 | \ | |
434 | BLKC_MOVE(PRE, d, p); \ | |
b3f05084 | 435 | pre##_eblk(&k, d, d); \ |
d03ab969 | 436 | BLKC_STORE(PRE, b.buf, d); \ |
141c1284 | 437 | if (MEMCMP(b.buf, !=, v[2].buf, PRE##_BLKSZ)) { \ |
d03ab969 | 438 | ok = 0; \ |
439 | printf("\nfail encryption:" \ | |
45c0fd36 | 440 | "\n\tkey = "); \ |
d03ab969 | 441 | type_hex.dump(&v[0], stdout); \ |
442 | printf("\n\tplaintext = "); type_hex.dump(&v[1], stdout); \ | |
443 | printf("\n\texpected = "); type_hex.dump(&v[2], stdout); \ | |
444 | printf("\n\tcalculated = "); type_hex.dump(&b, stdout); \ | |
445 | putchar('\n'); \ | |
446 | } \ | |
447 | \ | |
448 | /* --- Test decryption --- */ \ | |
449 | \ | |
450 | BLKC_MOVE(PRE, d, c); \ | |
b3f05084 | 451 | pre##_dblk(&k, d, d); \ |
d03ab969 | 452 | BLKC_STORE(PRE, b.buf, d); \ |
141c1284 | 453 | if (MEMCMP(b.buf, !=, v[1].buf, PRE##_BLKSZ)) { \ |
d03ab969 | 454 | ok = 0; \ |
455 | printf("\nfail decryption:" \ | |
45c0fd36 | 456 | "\n\tkey = "); \ |
d03ab969 | 457 | type_hex.dump(&v[0], stdout); \ |
458 | printf("\n\tciphertext = "); type_hex.dump(&v[2], stdout); \ | |
459 | printf("\n\texpected = "); type_hex.dump(&v[1], stdout); \ | |
460 | printf("\n\tcalculated = "); type_hex.dump(&b, stdout); \ | |
461 | putchar('\n'); \ | |
462 | } \ | |
463 | \ | |
464 | /* --- Return --- */ \ | |
465 | \ | |
466 | return (ok); \ | |
dcdc42e7 | 467 | } |
468 | ||
4328f746 MW |
469 | #define BLKC_TESTDEFS(PRE, pre) BLKC_TESTDEFSX(PRE, pre, #pre) |
470 | ||
471 | #define BLKC_TESTDEFSX(PRE, pre, name) \ | |
472 | { name, pre##_verify, { &type_hex, &type_hex, &type_hex, 0 } }, | |
473 | ||
aaae9cab | 474 | #define BLKC_TESTX(PRE, pre, name, fname) \ |
dcdc42e7 | 475 | \ |
aaae9cab | 476 | BLKC_VERIFYX(PRE, pre, name) \ |
d03ab969 | 477 | \ |
4e66da02 | 478 | static const test_chunk defs[] = { \ |
4328f746 | 479 | BLKC_TESTDEFSX(PRE, pre, name) \ |
d03ab969 | 480 | { 0, 0, { 0 } } \ |
481 | }; \ | |
482 | \ | |
483 | int main(int argc, char *argv[]) \ | |
484 | { \ | |
c76bf871 | 485 | BLKC_TESTHOOK; \ |
aaae9cab | 486 | test_run(argc, argv, defs, SRCDIR"/t/" fname); \ |
d03ab969 | 487 | return (0); \ |
488 | } | |
489 | ||
490 | #else | |
aaae9cab | 491 | # define BLKC_TESTX(PRE, pre, name, fname) |
d03ab969 | 492 | #endif |
493 | ||
aaae9cab MW |
494 | #define BLKC_TEST(PRE, pre) BLKC_TESTX(PRE, pre, #pre, #pre) |
495 | ||
d03ab969 | 496 | /*----- That's all, folks -------------------------------------------------*/ |
497 | ||
498 | #ifdef __cplusplus | |
499 | } | |
500 | #endif | |
501 | ||
502 | #endif |