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 #include <mLib/macros.h>
220 static void ecdestroy(ec_curve *c)
228 static int v##op(dstr v[]) \
230 ec_curve *e = *(ec_curve **)v[0].buf; \
231 ec *a = (ec *)v[1].buf; \
232 ec *r = (ec *)v[2].buf; \
236 if (!EC_EQ(r, &c)) { \
237 fprintf(stderr, #op " failed"); \
238 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \
239 fprintf(stderr, "\n a = "); ecdodump(a, stderr); \
240 fprintf(stderr, "\n r = "); ecdodump(r, stderr); \
241 fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \
242 fprintf(stderr, "\n"); \
245 EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); \
251 static int v##op(dstr v[]) \
253 ec_curve *e = *(ec_curve **)v[0].buf; \
254 ec *a = (ec *)v[1].buf; \
255 ec *b = (ec *)v[2].buf; \
256 ec *r = (ec *)v[3].buf; \
259 ec_##op(e, &c, a, b); \
260 if (!EC_EQ(r, &c)) { \
261 fprintf(stderr, #op " failed"); \
262 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr); \
263 fprintf(stderr, "\n a = "); ecdodump(a, stderr); \
264 fprintf(stderr, "\n b = "); ecdodump(b, stderr); \
265 fprintf(stderr, "\n r = "); ecdodump(r, stderr); \
266 fprintf(stderr, "\n c = "); ecdodump(&c, stderr); \
267 fprintf(stderr, "\n"); \
270 EC_DESTROY(a); EC_DESTROY(b); EC_DESTROY(r); EC_DESTROY(&c); \
280 static int vcheck(dstr v[])
282 ec_curve *e = *(ec_curve **)v[0].buf;
283 ec *a = (ec *)v[1].buf;
284 int r = *(int *)v[2].buf;
289 fprintf(stderr, "check failed");
290 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
291 fprintf(stderr, "\n a = "); ecdodump(a, stderr);
292 fprintf(stderr, "\n r = %d", r);
293 fprintf(stderr, "\n c = %d", c);
294 fprintf(stderr, "\n");
302 static int vmul(dstr v[])
304 ec_curve *e = *(ec_curve **)v[0].buf;
305 ec *a = (ec *)v[1].buf;
306 mp *n = *(mp **)v[2].buf;
307 ec *r = (ec *)v[3].buf;
312 fprintf(stderr, "mul failed");
313 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
314 fprintf(stderr, "\n a = "); ecdodump(a, stderr);
315 fprintf(stderr, "\n n = "); mp_writefile(n, stderr, 10);
316 fprintf(stderr, "\n r = "); ecdodump(r, stderr);
317 fprintf(stderr, "\n c = "); ecdodump(&c, stderr);
318 fprintf(stderr, "\n");
321 EC_DESTROY(a); EC_DESTROY(r); EC_DESTROY(&c); MP_DROP(n);
326 static int vfind(dstr v[])
328 ec_curve *e = *(ec_curve **)v[0].buf;
329 mp *x = *(mp **)v[1].buf;
330 ec *r = (ec *)v[2].buf;
333 if (!ec_find(e, &c, x)) EC_SETINF(&c);
335 fprintf(stderr, "find failed");
336 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
337 fprintf(stderr, "\n x = "); mp_writefile(x, stderr, 16);
338 fprintf(stderr, "\n r = "); ecdodump(r, stderr);
339 fprintf(stderr, "\n c = "); ecdodump(&c, stderr);
340 fprintf(stderr, "\n");
343 MP_DROP(x); EC_DESTROY(r); EC_DESTROY(&c);
348 static int vec2osp(dstr v[])
350 ec_curve *e = *(ec_curve **)v[0].buf;
351 unsigned f = *(int *)v[1].buf;
352 ec *p = (ec *)v[2].buf;
353 size_t n = 1 + 2*e->f->noctets;
354 dstr d = DSTR_INIT, dd = DSTR_INIT;
359 if (STRCMP(v[3].buf, ==, "FAIL")) wantwin = 0;
360 else { wantwin = 1; type_hex.cvt(v[3].buf, &d); }
362 dstr_ensure(&dd, n); buf_init(&b, dd.buf, n);
364 win = !ec_ec2osp(e, f, &b, p);
365 if (!win != !wantwin ||
366 (win && (BLEN(&b) != d.len ||
367 MEMCMP(BBASE(&b), !=, d.buf, BLEN(&b))))) {
369 fprintf(stderr, "ec2osp failed");
370 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
371 fprintf(stderr, "\n fmt = 0x%02x", f);
372 fprintf(stderr, "\n p = "); ecdodump(p, stderr);
373 fprintf(stderr, "\n want = ");
374 if (wantwin) type_hex.dump(&d, stderr);
375 else fprintf(stderr, "FAIL");
376 fprintf(stderr, "\nfound = ");
377 if (win) { dd.len = BLEN(&b); type_hex.dump(&dd, stderr); }
378 else fprintf(stderr, "FAIL");
379 fprintf(stderr, "\n");
382 dstr_destroy(&d); dstr_destroy(&dd);
383 EC_DESTROY(p); ecdestroy(e);
387 static int vos2ecp(dstr v[])
389 ec_curve *e = *(ec_curve **)v[0].buf;
390 unsigned f = *(int *)v[1].buf;
391 int remain = *(int *)v[4].buf;
398 if (STRCMP(v[3].buf, ==, "FAIL")) p = 0;
399 else { type_ec.cvt(v[3].buf, &d); p = (ec *)d.buf; }
401 buf_init(&b, v[2].buf, v[2].len);
402 win = !ec_os2ecp(e, f, &b, &q);
404 if (!win != !p || (win && (!EC_EQ(p, &q) || BLEFT(&b) != remain))) {
406 fprintf(stderr, "os2ecp failed");
407 fprintf(stderr, "\ncurve = "); type_ecurve.dump(v, stderr);
408 fprintf(stderr, "\n fmt = 0x%02x", f);
409 fprintf(stderr, "\ninput = "); type_hex.dump(&v[2], stderr);
410 fprintf(stderr, "\n want = ");
411 if (p) ecdodump(p, stderr); else fprintf(stderr, "FAIL");
412 fprintf(stderr, "\nfound = ");
413 if (win) ecdodump(&q, stderr); else fprintf(stderr, "FAIL");
414 fprintf(stderr, "\nremain= %d", remain);
415 fprintf(stderr, "\nleft = %d", (int)BLEFT(&b));
416 fprintf(stderr, "\n");
419 if (p) EC_DESTROY(p); EC_DESTROY(&q); ecdestroy(e);
424 static test_chunk tests[] = {
425 { "neg", vneg, { &type_ecurve, &type_ec, &type_ec } },
426 { "dbl", vdbl, { &type_ecurve, &type_ec, &type_ec } },
427 { "add", vadd, { &type_ecurve, &type_ec, &type_ec, &type_ec } },
428 { "sub", vsub, { &type_ecurve, &type_ec, &type_ec, &type_ec } },
429 { "mul", vmul, { &type_ecurve, &type_ec, &type_mp, &type_ec } },
430 { "check", vcheck, { &type_ecurve, &type_ec, &type_int } },
431 { "find", vfind, { &type_ecurve, &type_mp, &type_ec } },
432 { "ec2osp", vec2osp, { &type_ecurve, &type_int, &type_ec, &type_string } },
434 { &type_ecurve, &type_int, &type_hex, &type_string, &type_int } },
438 int main(int argc, char *argv[])
441 test_run(argc, argv, tests, SRCDIR "/t/ec");
447 /*----- That's all, folks -------------------------------------------------*/