3 * Code for testing elliptic-curve stuff
5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of Catacomb.
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.
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.
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,
28 /*----- Header files ------------------------------------------------------*/
36 #include <mLib/alloc.h>
37 #include <mLib/testrig.h>
45 /*----- Cardboard cut-out elliptic curve ----------------------------------*/
47 typedef struct ecctx {
54 #define MAGIC 0x3a1f0b07
56 static void ecDESTROY(ec_curve *cc)
58 ecctx *c = (ecctx *)cc;
60 ec_destroycurve(c->real);
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)); \
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)); \
87 static ec *ecFIND(ec_curve *cc, ec *d, mp *x)
89 ecctx *c = (ecctx *)cc;
90 return (EC_FIND(c->real, d, x));
93 static int ecCOMPR(ec_curve *cc, const ec *p)
95 ecctx *c = (ecctx *)cc;
96 return (EC_COMPR(c->real, p));
99 static int ecCHECK(ec_curve *cc, const ec *p)
101 ecctx *c = (ecctx *)cc;
102 return (EC_CHECK(c->real, p));
105 static int ecSAMEP(ec_curve *cc, ec_curve *dd)
107 ecctx *c = (ecctx *)cc, *d = (ecctx *)dd;
108 return (ec_samep(c->real, d->real));
111 static const ec_ops ecops = {
113 ecDESTROY, ecSAMEP, ecIN, ecOUT, ecFIX,
114 ecFIND, ecNEG, ecADD, ecSUB, ecDBL, ecCHECK, ecCOMPR
117 static ec_curve *ec_cutout(ec_curve *real, const char *name)
119 ecctx *c = CREATE(ecctx);
125 c->name = xstrdup(name);
130 static const char *ec_name(ec_curve *cc)
132 ecctx *c = (ecctx *)cc;
133 assert(c->magic == MAGIC);
137 /*----- Test field types --------------------------------------------------*/
139 static void ecvcvt(const char *buf, dstr *d)
148 for (ee = ectab; ee->name; ee++) {
149 if (qd_enum(&qd, ee->name) >= 0) {
150 ec_infofromdata(&ei, ee->data);
152 MP_DROP(ei.r); MP_DROP(ei.h);
157 if ((v = ec_curveparse(&qd)) == 0) {
158 fprintf(stderr, "bad curve `%.*s|%s': %s\n",
159 (int)(qd.p - buf), buf, qd.p, qd.e);
163 dstr_ensure(d, sizeof(v));
164 *(ec_curve **)d->buf = ec_cutout(v, buf);
168 static void ecvdump(dstr *d, FILE *fp)
170 ec_curve *v = *(ec_curve **)d->buf;
171 fprintf(fp, "%s", ec_name(v));
174 const test_type type_ecurve = { ecvcvt, ecvdump };
176 static void eccvt(const char *p, dstr *d)
183 dstr_ensure(d, sizeof(ec));
185 d->len += sizeof(ec);
187 if (!ec_ptparse(&qd, a)) {
188 fprintf(stderr, "bad point `%.*s|%s': %s\n",
189 (int)(qd.p - p), p, qd.p, qd.e);
194 static void ecdodump(ec *a, FILE *fp)
200 mp_writefile(a->x, fp, 16);
202 mp_writefile(a->y, fp, 16);
206 static void ecdump(dstr *d, FILE *fp)
208 ec *a = (ec *)d->buf;
212 const test_type type_ec = { eccvt, ecdump };
214 /*----- Testing elliptic curve functionality ------------------------------*/
218 static void ecdestroy(ec_curve *c)
226 static int v##op(dstr v[]) \
228 ec_curve *e = *(ec_curve **)v[0].buf; \
229 ec *a = (ec *)v[1].buf; \
230 ec *r = (ec *)v[2].buf; \
234 if (!EC_EQ(r, &c)) { \
235 fprintf(stderr, #op "failed"); \
236 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \
237 fprintf(stderr, "\n a = "); ecdodump(a, stderr); \
238 fprintf(stderr, "\n r = "); ecdodump(r, stderr); \
239 fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \
240 fprintf(stderr, "\n"); \
243 EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); \
249 static int v##op(dstr v[]) \
251 ec_curve *e = *(ec_curve **)v[0].buf; \
252 ec *a = (ec *)v[1].buf; \
253 ec *b = (ec *)v[2].buf; \
254 ec *r = (ec *)v[3].buf; \
257 ec_##op(e, &c, a, b); \
258 if (!EC_EQ(r, &c)) { \
259 fprintf(stderr, #op "failed"); \
260 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \
261 fprintf(stderr, "\n a = "); ecdodump(a, stderr); \
262 fprintf(stderr, "\n b = "); ecdodump(b, stderr); \
263 fprintf(stderr, "\n r = "); ecdodump(r, stderr); \
264 fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \
265 fprintf(stderr, "\n"); \
268 EC_DESTROY(a); EC_DESTROY(b); EC_DESTROY(r); EC_DESTROY(&c); \
278 static int vcheck(dstr v[])
280 ec_curve *e = *(ec_curve **)v[0].buf;
281 ec *a = (ec *)v[1].buf;
282 int r = *(int *)v[2].buf;
287 fprintf(stderr, "check failed");
288 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
289 fprintf(stderr, "\n a = "); ecdodump(a, stderr);
290 fprintf(stderr, "\n r = %d", r);
291 fprintf(stderr, "\n c = %d", c);
292 fprintf(stderr, "\n");
300 static int vmul(dstr v[])
302 ec_curve *e = *(ec_curve **)v[0].buf;
303 ec *a = (ec *)v[1].buf;
304 mp *n = *(mp **)v[2].buf;
305 ec *r = (ec *)v[3].buf;
310 fprintf(stderr, "mul failed");
311 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
312 fprintf(stderr, "\n a = "); ecdodump(a, stderr);
313 fprintf(stderr, "\n n = "); mp_writefile(n, stderr, 10);
314 fprintf(stderr, "\n r = "); ecdodump(r, stderr);
315 fprintf(stderr, "\n c = "); ecdodump(&c, stderr);
316 fprintf(stderr, "\n");
319 EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); MP_DROP(n);
324 static int vfind(dstr v[])
326 ec_curve *e = *(ec_curve **)v[0].buf;
327 mp *x = *(mp **)v[1].buf;
328 ec *r = (ec *)v[2].buf;
331 if (!ec_find(e, &c, x)) EC_SETINF(&c);
333 fprintf(stderr, "find failed");
334 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
335 fprintf(stderr, "\n x = "); mp_writefile(x, stderr, 16);
336 fprintf(stderr, "\n r = "); ecdodump(r, stderr);
337 fprintf(stderr, "\n c = "); ecdodump(&c, stderr);
338 fprintf(stderr, "\n");
341 MP_DROP(x); EC_DESTROY(r); EC_DESTROY(&c);
346 static int vec2osp(dstr v[])
348 ec_curve *e = *(ec_curve **)v[0].buf;
349 unsigned f = *(int *)v[1].buf;
350 ec *p = (ec *)v[2].buf;
351 size_t n = 1 + 2*e->f->noctets;
352 dstr d = DSTR_INIT, dd = DSTR_INIT;
357 if (strcmp(v[3].buf, "FAIL") == 0) wantwin = 0;
358 else { wantwin = 1; type_hex.cvt(v[3].buf, &d); }
360 dstr_ensure(&dd, n); buf_init(&b, dd.buf, n);
362 win = !ec_ec2osp(e, f, &b, p);
363 if (!win != !wantwin ||
364 (win && (BLEN(&b) != d.len ||
365 memcmp(BBASE(&b), d.buf, BLEN(&b)) != 0))) {
367 fprintf(stderr, "ec2osp failed");
368 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
369 fprintf(stderr, "\n fmt = 0x%02x", f);
370 fprintf(stderr, "\n p = "); ecdodump(p, stderr);
371 fprintf(stderr, "\n want = ");
372 if (wantwin) type_hex.dump(&d, stderr);
373 else fprintf(stderr, "FAIL");
374 fprintf(stderr, "\nfound = ");
375 if (win) { dd.len = BLEN(&b); type_hex.dump(&dd, stderr); }
376 else fprintf(stderr, "FAIL");
377 fprintf(stderr, "\n");
380 dstr_destroy(&d); dstr_destroy(&dd);
381 EC_DESTROY(p); ecdestroy(e);
385 static int vos2ecp(dstr v[])
387 ec_curve *e = *(ec_curve **)v[0].buf;
388 unsigned f = *(int *)v[1].buf;
389 int remain = *(int *)v[4].buf;
396 if (strcmp(v[3].buf, "FAIL") == 0) p = 0;
397 else { type_ec.cvt(v[3].buf, &d); p = (ec *)d.buf; }
399 buf_init(&b, v[2].buf, v[2].len);
400 win = !ec_os2ecp(e, f, &b, &q);
402 if (!win != !p || (win && (!EC_EQ(p, &q) || BLEFT(&b) != remain))) {
404 fprintf(stderr, "os2ecp failed");
405 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
406 fprintf(stderr, "\n fmt = 0x%02x", f);
407 fprintf(stderr, "\ninput = "); type_hex.dump(&v[2], stderr);
408 fprintf(stderr, "\n want = ");
409 if (p) ecdodump(p, stderr); else fprintf(stderr, "FAIL");
410 fprintf(stderr, "\nfound = ");
411 if (win) ecdodump(&q, stderr); else fprintf(stderr, "FAIL");
412 fprintf(stderr, "\nremain= %d", remain);
413 fprintf(stderr, "\nleft = %d", (int)BLEFT(&b));
414 fprintf(stderr, "\n");
417 if (p) EC_DESTROY(p); EC_DESTROY(&q); ecdestroy(e);
422 static test_chunk tests[] = {
423 { "neg", vneg, { &type_ecurve, &type_ec, &type_ec } },
424 { "dbl", vdbl, { &type_ecurve, &type_ec, &type_ec } },
425 { "add", vadd, { &type_ecurve, &type_ec, &type_ec, &type_ec } },
426 { "sub", vsub, { &type_ecurve, &type_ec, &type_ec, &type_ec } },
427 { "mul", vmul, { &type_ecurve, &type_ec, &type_mp, &type_ec } },
428 { "check", vcheck, { &type_ecurve, &type_ec, &type_int } },
429 { "find", vfind, { &type_ecurve, &type_mp, &type_ec } },
430 { "ec2osp", vec2osp, { &type_ecurve, &type_int, &type_ec, &type_string } },
432 { &type_ecurve, &type_int, &type_hex, &type_string, &type_int } },
436 int main(int argc, char *argv[])
439 test_run(argc, argv, tests, SRCDIR "/t/ec");
445 /*----- That's all, folks -------------------------------------------------*/