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bc985cef | 1 | /* -*-c-*- |
2 | * | |
5685a696 | 3 | * $Id$ |
bc985cef | 4 | * |
5 | * Code for testing elliptic-curve stuff | |
6 | * | |
7 | * (c) 2004 Straylight/Edgeware | |
8 | */ | |
9 | ||
45c0fd36 | 10 | /*----- Licensing notice --------------------------------------------------* |
bc985cef | 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 | * |
bc985cef | 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 | * |
bc985cef | 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 | ||
bc985cef | 30 | /*----- Header files ------------------------------------------------------*/ |
31 | ||
32 | #include <assert.h> | |
33 | #include <ctype.h> | |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <string.h> | |
37 | ||
38 | #include <mLib/alloc.h> | |
39 | #include <mLib/testrig.h> | |
40 | #include <mLib/sub.h> | |
41 | ||
42 | #include "ec.h" | |
43 | #include "ec-test.h" | |
44 | ||
45 | /*----- Cardboard cut-out elliptic curve ----------------------------------*/ | |
46 | ||
47 | typedef struct ecctx { | |
48 | ec_curve c; | |
49 | unsigned long magic; | |
50 | char *name; | |
51 | ec_curve *real; | |
52 | } ecctx; | |
53 | ||
54 | #define MAGIC 0x3a1f0b07 | |
55 | ||
56 | static void ecDESTROY(ec_curve *cc) | |
57 | { | |
58 | ecctx *c = (ecctx *)cc; | |
59 | xfree(c->name); | |
60 | ec_destroycurve(c->real); | |
61 | DESTROY(c); | |
62 | } | |
63 | ||
64 | #define UNOP(OP) \ | |
65 | static ec *ec##OP(ec_curve *cc, ec *d, const ec *p) { \ | |
66 | ecctx *c = (ecctx *)cc; \ | |
67 | return (EC_##OP(c->real, d, p)); \ | |
68 | } | |
69 | ||
70 | #define BINOP(OP) \ | |
71 | static ec *ec##OP(ec_curve *cc, ec *d, const ec *p, const ec *q) { \ | |
72 | ecctx *c = (ecctx *)cc; \ | |
73 | return (EC_##OP(c->real, d, p, q)); \ | |
74 | } | |
75 | ||
76 | UNOP(IN) | |
77 | UNOP(OUT) | |
78 | UNOP(FIX) | |
79 | UNOP(NEG) | |
80 | UNOP(DBL) | |
81 | BINOP(ADD) | |
82 | BINOP(SUB) | |
83 | ||
84 | #undef UNOP | |
85 | #undef BINOP | |
86 | ||
87 | static ec *ecFIND(ec_curve *cc, ec *d, mp *x) | |
88 | { | |
89 | ecctx *c = (ecctx *)cc; | |
90 | return (EC_FIND(c->real, d, x)); | |
91 | } | |
92 | ||
93 | static int ecCHECK(ec_curve *cc, const ec *p) | |
94 | { | |
95 | ecctx *c = (ecctx *)cc; | |
96 | return (EC_CHECK(c->real, p)); | |
97 | } | |
98 | ||
34e4f738 | 99 | static int ecSAMEP(ec_curve *cc, ec_curve *dd) |
100 | { | |
101 | ecctx *c = (ecctx *)cc, *d = (ecctx *)dd; | |
102 | return (ec_samep(c->real, d->real)); | |
103 | } | |
104 | ||
4e66da02 | 105 | static const ec_ops ecops = { |
f94b972d | 106 | "cardboard", |
34e4f738 | 107 | ecDESTROY, ecSAMEP, ecIN, ecOUT, ecFIX, |
bc985cef | 108 | ecFIND, ecNEG, ecADD, ecSUB, ecDBL, ecCHECK |
109 | }; | |
110 | ||
111 | static ec_curve *ec_cutout(ec_curve *real, const char *name) | |
112 | { | |
113 | ecctx *c = CREATE(ecctx); | |
114 | c->c.f = real->f; | |
115 | c->c.ops = &ecops; | |
34e4f738 | 116 | c->c.a = real->a; |
117 | c->c.b = real->b; | |
bc985cef | 118 | c->magic = MAGIC; |
119 | c->name = xstrdup(name); | |
120 | c->real = real; | |
121 | return (&c->c); | |
122 | } | |
123 | ||
124 | static const char *ec_name(ec_curve *cc) | |
125 | { | |
126 | ecctx *c = (ecctx *)cc; | |
127 | assert(c->magic == MAGIC); | |
128 | return (c->name); | |
129 | } | |
130 | ||
432c4e18 | 131 | /*----- Test field types --------------------------------------------------*/ |
bc985cef | 132 | |
133 | static void ecvcvt(const char *buf, dstr *d) | |
134 | { | |
bc985cef | 135 | ec_curve *v; |
432c4e18 | 136 | qd_parse qd; |
137 | ||
138 | qd.p = buf; | |
139 | qd.e = 0; | |
140 | if ((v = ec_curveparse(&qd)) == 0) { | |
141 | fprintf(stderr, "bad curve `%.*s|%s': %s\n", | |
142 | qd.p - buf, buf, qd.p, qd.e); | |
143 | exit(1); | |
bc985cef | 144 | } |
bc985cef | 145 | dstr_ensure(d, sizeof(v)); |
146 | *(ec_curve **)d->buf = ec_cutout(v, buf); | |
147 | d->len += sizeof(v); | |
148 | } | |
149 | ||
150 | static void ecvdump(dstr *d, FILE *fp) | |
151 | { | |
152 | ec_curve *v = *(ec_curve **)d->buf; | |
153 | fprintf(fp, "%s", ec_name(v)); | |
154 | } | |
155 | ||
4e66da02 | 156 | const test_type type_ecurve = { ecvcvt, ecvdump }; |
bc985cef | 157 | |
158 | static void eccvt(const char *p, dstr *d) | |
159 | { | |
160 | ec *a; | |
432c4e18 | 161 | qd_parse qd; |
bc985cef | 162 | |
432c4e18 | 163 | qd.p = p; |
164 | qd.e = 0; | |
bc985cef | 165 | dstr_ensure(d, sizeof(ec)); |
166 | a = (ec *)d->buf; | |
167 | d->len += sizeof(ec); | |
168 | ec_create(a); | |
432c4e18 | 169 | if (!ec_ptparse(&qd, a)) { |
170 | fprintf(stderr, "bad point `%.*s|%s': %s\n", qd.p - p, p, qd.p, qd.e); | |
171 | exit(1); | |
172 | } | |
bc985cef | 173 | } |
174 | ||
175 | static void ecdodump(ec *a, FILE *fp) | |
176 | { | |
177 | if (EC_ATINF(a)) | |
178 | fputs("inf", fp); | |
179 | else { | |
45c0fd36 | 180 | fputs("0x", fp); |
bc985cef | 181 | mp_writefile(a->x, fp, 16); |
182 | fputs(", 0x", fp); | |
183 | mp_writefile(a->y, fp, 16); | |
184 | } | |
185 | } | |
186 | ||
187 | static void ecdump(dstr *d, FILE *fp) | |
188 | { | |
189 | ec *a = (ec *)d->buf; | |
190 | ecdodump(a, fp); | |
191 | } | |
192 | ||
5685a696 | 193 | const test_type type_ec = { eccvt, ecdump }; |
bc985cef | 194 | |
195 | /*----- Testing elliptic curve functionality ------------------------------*/ | |
196 | ||
197 | #ifdef TEST_RIG | |
198 | ||
199 | static void ecdestroy(ec_curve *c) | |
200 | { | |
201 | field *f = c->f; | |
202 | ec_destroycurve(c); | |
203 | F_DESTROY(f); | |
204 | } | |
205 | ||
206 | #define UNOP(op) \ | |
207 | static int v##op(dstr v[]) \ | |
208 | { \ | |
209 | ec_curve *e = *(ec_curve **)v[0].buf; \ | |
210 | ec *a = (ec *)v[1].buf; \ | |
211 | ec *r = (ec *)v[2].buf; \ | |
212 | ec c = EC_INIT; \ | |
213 | int ok = 1; \ | |
214 | ec_##op(e, &c, a); \ | |
215 | if (!EC_EQ(r, &c)) { \ | |
216 | fprintf(stderr, #op "failed"); \ | |
217 | fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \ | |
218 | fprintf(stderr, "\n a = "); ecdodump(a, stderr); \ | |
219 | fprintf(stderr, "\n r = "); ecdodump(r, stderr); \ | |
220 | fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \ | |
221 | fprintf(stderr, "\n"); \ | |
222 | ok = 0; \ | |
223 | } \ | |
224 | EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); \ | |
225 | ecdestroy(e); \ | |
226 | return (ok); \ | |
227 | } | |
228 | ||
229 | #define BINOP(op) \ | |
230 | static int v##op(dstr v[]) \ | |
231 | { \ | |
232 | ec_curve *e = *(ec_curve **)v[0].buf; \ | |
233 | ec *a = (ec *)v[1].buf; \ | |
234 | ec *b = (ec *)v[2].buf; \ | |
235 | ec *r = (ec *)v[3].buf; \ | |
236 | ec c = EC_INIT; \ | |
237 | int ok = 1; \ | |
238 | ec_##op(e, &c, a, b); \ | |
239 | if (!EC_EQ(r, &c)) { \ | |
240 | fprintf(stderr, #op "failed"); \ | |
241 | fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \ | |
242 | fprintf(stderr, "\n a = "); ecdodump(a, stderr); \ | |
243 | fprintf(stderr, "\n b = "); ecdodump(b, stderr); \ | |
244 | fprintf(stderr, "\n r = "); ecdodump(r, stderr); \ | |
245 | fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \ | |
246 | fprintf(stderr, "\n"); \ | |
247 | ok = 0; \ | |
248 | } \ | |
249 | EC_DESTROY(a); EC_DESTROY(b); EC_DESTROY(r); EC_DESTROY(&c); \ | |
250 | ecdestroy(e); \ | |
251 | return (ok); \ | |
252 | } | |
253 | ||
254 | UNOP(neg) | |
255 | UNOP(dbl) | |
256 | BINOP(add) | |
257 | BINOP(sub) | |
258 | ||
259 | static int vcheck(dstr v[]) | |
260 | { | |
261 | ec_curve *e = *(ec_curve **)v[0].buf; | |
262 | ec *a = (ec *)v[1].buf; | |
263 | int r = *(int *)v[2].buf; | |
264 | int c; | |
265 | int ok = 1; | |
266 | c = ec_check(e, a); | |
267 | if (r != c) { | |
268 | fprintf(stderr, "check failed"); | |
269 | fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); | |
45c0fd36 MW |
270 | fprintf(stderr, "\n a = "); ecdodump(a, stderr); |
271 | fprintf(stderr, "\n r = %d", r); | |
272 | fprintf(stderr, "\n c = %d", c); | |
bc985cef | 273 | fprintf(stderr, "\n"); |
274 | ok = 0; | |
275 | } | |
276 | EC_DESTROY(a); | |
277 | ecdestroy(e); | |
278 | return (ok); | |
279 | } | |
280 | ||
281 | static int vmul(dstr v[]) | |
282 | { | |
283 | ec_curve *e = *(ec_curve **)v[0].buf; | |
284 | ec *a = (ec *)v[1].buf; | |
285 | mp *n = *(mp **)v[2].buf; | |
286 | ec *r = (ec *)v[3].buf; | |
287 | ec c = EC_INIT; | |
288 | int ok = 1; | |
289 | ec_mul(e, &c, a, n); | |
290 | if (!EC_EQ(r, &c)) { | |
291 | fprintf(stderr, "mul failed"); | |
292 | fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); | |
45c0fd36 MW |
293 | fprintf(stderr, "\n a = "); ecdodump(a, stderr); |
294 | fprintf(stderr, "\n n = "); mp_writefile(n, stderr, 10); | |
295 | fprintf(stderr, "\n r = "); ecdodump(r, stderr); | |
296 | fprintf(stderr, "\n c = "); ecdodump(&c, stderr); | |
bc985cef | 297 | fprintf(stderr, "\n"); |
298 | ok = 0; | |
299 | } | |
300 | EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); MP_DROP(n); | |
301 | ecdestroy(e); | |
302 | return (ok); | |
303 | } | |
304 | ||
305 | static int vfind(dstr v[]) | |
306 | { | |
307 | ec_curve *e = *(ec_curve **)v[0].buf; | |
308 | mp *x = *(mp **)v[1].buf; | |
309 | ec *r = (ec *)v[2].buf; | |
310 | ec c = EC_INIT; | |
311 | int ok = 1; | |
312 | if (!ec_find(e, &c, x)) EC_SETINF(&c); | |
313 | if (!EC_EQ(r, &c)) { | |
314 | fprintf(stderr, "find failed"); | |
315 | fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); | |
45c0fd36 MW |
316 | fprintf(stderr, "\n x = "); mp_writefile(x, stderr, 16); |
317 | fprintf(stderr, "\n r = "); ecdodump(r, stderr); | |
318 | fprintf(stderr, "\n c = "); ecdodump(&c, stderr); | |
bc985cef | 319 | fprintf(stderr, "\n"); |
320 | ok = 0; | |
321 | } | |
322 | MP_DROP(x); EC_DESTROY(r); EC_DESTROY(&c); | |
323 | ecdestroy(e); | |
324 | return (ok); | |
325 | } | |
326 | ||
327 | static test_chunk tests[] = { | |
328 | { "neg", vneg, { &type_ecurve, &type_ec, &type_ec } }, | |
329 | { "dbl", vdbl, { &type_ecurve, &type_ec, &type_ec } }, | |
330 | { "add", vadd, { &type_ecurve, &type_ec, &type_ec, &type_ec } }, | |
331 | { "sub", vsub, { &type_ecurve, &type_ec, &type_ec, &type_ec } }, | |
332 | { "mul", vmul, { &type_ecurve, &type_ec, &type_mp, &type_ec } }, | |
333 | { "check", vcheck, { &type_ecurve, &type_ec, &type_int } }, | |
334 | { "find", vfind, { &type_ecurve, &type_mp, &type_ec } }, | |
335 | { 0, 0, { 0 } } | |
336 | }; | |
337 | ||
338 | int main(int argc, char *argv[]) | |
339 | { | |
340 | sub_init(); | |
341 | test_run(argc, argv, tests, SRCDIR "/tests/ec"); | |
342 | return (0); | |
343 | } | |
344 | ||
345 | #endif | |
346 | ||
347 | /*----- That's all, folks -------------------------------------------------*/ |