bc985cef |
1 | /* -*-c-*- |
2 | * |
5685a696 |
3 | * $Id$ |
bc985cef |
4 | * |
5 | * Code for testing elliptic-curve stuff |
6 | * |
7 | * (c) 2004 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
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. |
18 | * |
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. |
23 | * |
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 { |
180 | fputs("0x", fp); |
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); |
270 | fprintf(stderr, "\n a = "); ecdodump(a, stderr); |
271 | fprintf(stderr, "\n r = %d", r); |
272 | fprintf(stderr, "\n c = %d", c); |
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); |
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); |
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); |
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); |
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 -------------------------------------------------*/ |