]>
Commit | Line | Data |
---|---|---|
65e81670 | 1 | /* crypto/ec/ec_lib.c */ |
35b73a1f BM |
2 | /* |
3 | * Originally written by Bodo Moeller for the OpenSSL project. | |
4 | */ | |
65e81670 | 5 | /* ==================================================================== |
37c660ff | 6 | * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. |
65e81670 BM |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * openssl-core@openssl.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | * | |
53 | * This product includes cryptographic software written by Eric Young | |
54 | * (eay@cryptsoft.com). This product includes software written by Tim | |
55 | * Hudson (tjh@cryptsoft.com). | |
56 | * | |
57 | */ | |
7793f30e BM |
58 | /* ==================================================================== |
59 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
60 | * Binary polynomial ECC support in OpenSSL originally developed by | |
61 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
62 | */ | |
65e81670 | 63 | |
c4b36ff4 BM |
64 | #include <string.h> |
65 | ||
0657bf9c | 66 | #include <openssl/err.h> |
bb62a8b0 | 67 | #include <openssl/opensslv.h> |
0657bf9c | 68 | |
65e81670 | 69 | #include "ec_lcl.h" |
0657bf9c | 70 | |
bb62a8b0 BM |
71 | static const char EC_version[] = "EC" OPENSSL_VERSION_PTEXT; |
72 | ||
0657bf9c BM |
73 | |
74 | /* functions for EC_GROUP objects */ | |
75 | ||
76 | EC_GROUP *EC_GROUP_new(const EC_METHOD *meth) | |
77 | { | |
78 | EC_GROUP *ret; | |
79 | ||
80 | if (meth == NULL) | |
81 | { | |
82 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
83 | return NULL; | |
84 | } | |
85 | if (meth->group_init == 0) | |
86 | { | |
87 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
88 | return NULL; | |
89 | } | |
90 | ||
91 | ret = OPENSSL_malloc(sizeof *ret); | |
92 | if (ret == NULL) | |
93 | { | |
94 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); | |
95 | return NULL; | |
96 | } | |
97 | ||
98 | ret->meth = meth; | |
df9cc153 BM |
99 | |
100 | ret->extra_data = NULL; | |
945e15a2 | 101 | |
b6db386f BM |
102 | ret->generator = NULL; |
103 | BN_init(&ret->order); | |
104 | BN_init(&ret->cofactor); | |
105 | ||
254ef80d BM |
106 | ret->curve_name = 0; |
107 | ret->asn1_flag = 0; | |
5f3d6f70 | 108 | ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED; |
458c2917 BM |
109 | |
110 | ret->seed = NULL; | |
111 | ret->seed_len = 0; | |
945e15a2 | 112 | |
0657bf9c BM |
113 | if (!meth->group_init(ret)) |
114 | { | |
115 | OPENSSL_free(ret); | |
116 | return NULL; | |
117 | } | |
118 | ||
119 | return ret; | |
120 | } | |
121 | ||
122 | ||
0657bf9c BM |
123 | void EC_GROUP_free(EC_GROUP *group) |
124 | { | |
7711de24 BM |
125 | if (!group) return; |
126 | ||
0657bf9c BM |
127 | if (group->meth->group_finish != 0) |
128 | group->meth->group_finish(group); | |
df9cc153 | 129 | |
ba729265 | 130 | EC_GROUP_free_all_extra_data(group); |
df9cc153 | 131 | |
b6db386f BM |
132 | if (group->generator != NULL) |
133 | EC_POINT_free(group->generator); | |
134 | BN_free(&group->order); | |
135 | BN_free(&group->cofactor); | |
136 | ||
458c2917 BM |
137 | if (group->seed) |
138 | OPENSSL_free(group->seed); | |
139 | ||
0657bf9c BM |
140 | OPENSSL_free(group); |
141 | } | |
142 | ||
143 | ||
144 | void EC_GROUP_clear_free(EC_GROUP *group) | |
145 | { | |
7711de24 BM |
146 | if (!group) return; |
147 | ||
0657bf9c BM |
148 | if (group->meth->group_clear_finish != 0) |
149 | group->meth->group_clear_finish(group); | |
150 | else if (group->meth != NULL && group->meth->group_finish != 0) | |
151 | group->meth->group_finish(group); | |
df9cc153 | 152 | |
ba729265 | 153 | EC_GROUP_clear_free_all_extra_data(group); |
df9cc153 | 154 | |
b6db386f BM |
155 | if (group->generator != NULL) |
156 | EC_POINT_clear_free(group->generator); | |
157 | BN_clear_free(&group->order); | |
158 | BN_clear_free(&group->cofactor); | |
159 | ||
458c2917 BM |
160 | if (group->seed) |
161 | { | |
4579924b | 162 | OPENSSL_cleanse(group->seed, group->seed_len); |
458c2917 BM |
163 | OPENSSL_free(group->seed); |
164 | } | |
165 | ||
4579924b | 166 | OPENSSL_cleanse(group, sizeof *group); |
0657bf9c BM |
167 | OPENSSL_free(group); |
168 | } | |
169 | ||
170 | ||
171 | int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) | |
172 | { | |
ba729265 BM |
173 | EC_EXTRA_DATA *d; |
174 | ||
0657bf9c BM |
175 | if (dest->meth->group_copy == 0) |
176 | { | |
177 | ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
178 | return 0; | |
179 | } | |
180 | if (dest->meth != src->meth) | |
181 | { | |
182 | ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
183 | return 0; | |
184 | } | |
1d5bd6cf BM |
185 | if (dest == src) |
186 | return 1; | |
0657bf9c | 187 | |
ba729265 | 188 | EC_GROUP_free_all_extra_data(dest); |
df9cc153 | 189 | |
ba729265 BM |
190 | for (d = src->extra_data; d != NULL; d = d->next) |
191 | { | |
192 | void *t = d->dup_func(d->data); | |
193 | ||
194 | if (t == NULL) | |
195 | return 0; | |
196 | if (!EC_GROUP_set_extra_data(dest, t, d->dup_func, d->free_func, d->clear_free_func)) | |
197 | return 0; | |
df9cc153 BM |
198 | } |
199 | ||
b6db386f BM |
200 | if (src->generator != NULL) |
201 | { | |
202 | if (dest->generator == NULL) | |
203 | { | |
204 | dest->generator = EC_POINT_new(dest); | |
205 | if (dest->generator == NULL) return 0; | |
206 | } | |
207 | if (!EC_POINT_copy(dest->generator, src->generator)) return 0; | |
208 | } | |
209 | else | |
210 | { | |
211 | /* src->generator == NULL */ | |
212 | if (dest->generator != NULL) | |
213 | { | |
214 | EC_POINT_clear_free(dest->generator); | |
215 | dest->generator = NULL; | |
216 | } | |
217 | } | |
218 | ||
219 | if (!BN_copy(&dest->order, &src->order)) return 0; | |
220 | if (!BN_copy(&dest->cofactor, &src->cofactor)) return 0; | |
221 | ||
254ef80d BM |
222 | dest->curve_name = src->curve_name; |
223 | dest->asn1_flag = src->asn1_flag; | |
224 | dest->asn1_form = src->asn1_form; | |
458c2917 BM |
225 | |
226 | if (src->seed) | |
227 | { | |
228 | if (dest->seed) | |
229 | OPENSSL_free(dest->seed); | |
230 | dest->seed = OPENSSL_malloc(src->seed_len); | |
231 | if (dest->seed == NULL) | |
232 | return 0; | |
233 | if (!memcpy(dest->seed, src->seed, src->seed_len)) | |
234 | return 0; | |
235 | dest->seed_len = src->seed_len; | |
236 | } | |
237 | else | |
238 | { | |
239 | if (dest->seed) | |
240 | OPENSSL_free(dest->seed); | |
241 | dest->seed = NULL; | |
242 | dest->seed_len = 0; | |
243 | } | |
244 | ||
b6db386f | 245 | |
0657bf9c BM |
246 | return dest->meth->group_copy(dest, src); |
247 | } | |
248 | ||
249 | ||
7793f30e BM |
250 | EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) |
251 | { | |
252 | EC_GROUP *t = NULL; | |
253 | int ok = 0; | |
254 | ||
255 | if (a == NULL) return NULL; | |
256 | ||
257 | if ((t = EC_GROUP_new(a->meth)) == NULL) return(NULL); | |
258 | if (!EC_GROUP_copy(t, a)) goto err; | |
259 | ||
260 | ok = 1; | |
261 | ||
262 | err: | |
263 | if (!ok) | |
264 | { | |
265 | if (t) EC_GROUP_free(t); | |
266 | return NULL; | |
267 | } | |
268 | else return t; | |
269 | } | |
270 | ||
271 | ||
48fe4d62 BM |
272 | const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) |
273 | { | |
274 | return group->meth; | |
275 | } | |
276 | ||
277 | ||
458c2917 BM |
278 | int EC_METHOD_get_field_type(const EC_METHOD *meth) |
279 | { | |
280 | return meth->field_type; | |
281 | } | |
282 | ||
283 | ||
b6db386f | 284 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) |
bb62a8b0 | 285 | { |
b6db386f | 286 | if (generator == NULL) |
bb62a8b0 | 287 | { |
b6db386f BM |
288 | ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); |
289 | return 0 ; | |
bb62a8b0 | 290 | } |
b6db386f BM |
291 | |
292 | if (group->generator == NULL) | |
293 | { | |
294 | group->generator = EC_POINT_new(group); | |
295 | if (group->generator == NULL) return 0; | |
296 | } | |
297 | if (!EC_POINT_copy(group->generator, generator)) return 0; | |
298 | ||
299 | if (order != NULL) | |
300 | { if (!BN_copy(&group->order, order)) return 0; } | |
301 | else | |
302 | { if (!BN_zero(&group->order)) return 0; } | |
303 | ||
304 | if (cofactor != NULL) | |
305 | { if (!BN_copy(&group->cofactor, cofactor)) return 0; } | |
306 | else | |
307 | { if (!BN_zero(&group->cofactor)) return 0; } | |
308 | ||
309 | return 1; | |
bb62a8b0 BM |
310 | } |
311 | ||
312 | ||
b6db386f | 313 | EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) |
bb62a8b0 | 314 | { |
b6db386f | 315 | return group->generator; |
bb62a8b0 BM |
316 | } |
317 | ||
318 | ||
b6db386f | 319 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) |
0657bf9c | 320 | { |
b6db386f | 321 | if (!BN_copy(order, &group->order)) |
0657bf9c | 322 | return 0; |
b6db386f BM |
323 | |
324 | return !BN_is_zero(order); | |
0657bf9c BM |
325 | } |
326 | ||
327 | ||
b6db386f | 328 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) |
48fe4d62 | 329 | { |
b6db386f | 330 | if (!BN_copy(cofactor, &group->cofactor)) |
48fe4d62 | 331 | return 0; |
b6db386f BM |
332 | |
333 | return !BN_is_zero(&group->cofactor); | |
48fe4d62 BM |
334 | } |
335 | ||
336 | ||
b6db386f BM |
337 | void EC_GROUP_set_nid(EC_GROUP *group, int nid) |
338 | { | |
254ef80d | 339 | group->curve_name = nid; |
b6db386f BM |
340 | } |
341 | ||
342 | ||
343 | int EC_GROUP_get_nid(const EC_GROUP *group) | |
344 | { | |
254ef80d | 345 | return group->curve_name; |
b6db386f BM |
346 | } |
347 | ||
348 | ||
458c2917 BM |
349 | void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) |
350 | { | |
351 | group->asn1_flag = flag; | |
352 | } | |
353 | ||
354 | ||
355 | int EC_GROUP_get_asn1_flag(const EC_GROUP *group) | |
356 | { | |
357 | return group->asn1_flag; | |
358 | } | |
359 | ||
360 | ||
254ef80d BM |
361 | void EC_GROUP_set_point_conversion_form(EC_GROUP *group, |
362 | point_conversion_form_t form) | |
363 | { | |
364 | group->asn1_form = form; | |
365 | } | |
366 | ||
367 | ||
368 | point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *group) | |
369 | { | |
370 | return group->asn1_form; | |
371 | } | |
372 | ||
373 | ||
5f3d6f70 BM |
374 | size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len) |
375 | { | |
376 | if (group->seed) | |
377 | { | |
378 | OPENSSL_free(group->seed); | |
379 | group->seed = NULL; | |
380 | group->seed_len = 0; | |
381 | } | |
382 | ||
383 | if (!len || !p) | |
384 | return 1; | |
385 | ||
386 | if ((group->seed = OPENSSL_malloc(len)) == NULL) | |
387 | return 0; | |
388 | memcpy(group->seed, p, len); | |
389 | group->seed_len = len; | |
390 | ||
391 | return len; | |
392 | } | |
393 | ||
394 | ||
395 | unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group) | |
396 | { | |
397 | return group->seed; | |
398 | } | |
399 | ||
400 | ||
401 | size_t EC_GROUP_get_seed_len(const EC_GROUP *group) | |
402 | { | |
403 | return group->seed_len; | |
404 | } | |
405 | ||
406 | ||
b6db386f | 407 | int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 408 | { |
7793f30e | 409 | if (group->meth->group_set_curve == 0) |
48fe4d62 | 410 | { |
b6db386f | 411 | ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
412 | return 0; |
413 | } | |
7793f30e | 414 | return group->meth->group_set_curve(group, p, a, b, ctx); |
48fe4d62 BM |
415 | } |
416 | ||
417 | ||
b6db386f | 418 | int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 419 | { |
7793f30e | 420 | if (group->meth->group_get_curve == 0) |
48fe4d62 | 421 | { |
b6db386f | 422 | ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
423 | return 0; |
424 | } | |
7793f30e BM |
425 | return group->meth->group_get_curve(group, p, a, b, ctx); |
426 | } | |
427 | ||
428 | ||
429 | int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) | |
430 | { | |
431 | if (group->meth->group_set_curve == 0) | |
432 | { | |
433 | ECerr(EC_F_EC_GROUP_SET_CURVE_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
434 | return 0; | |
435 | } | |
436 | return group->meth->group_set_curve(group, p, a, b, ctx); | |
437 | } | |
438 | ||
439 | ||
440 | int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) | |
441 | { | |
442 | if (group->meth->group_get_curve == 0) | |
443 | { | |
444 | ECerr(EC_F_EC_GROUP_GET_CURVE_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
445 | return 0; | |
446 | } | |
447 | return group->meth->group_get_curve(group, p, a, b, ctx); | |
448 | } | |
449 | ||
450 | ||
451 | int EC_GROUP_get_degree(const EC_GROUP *group) | |
452 | { | |
453 | if (group->meth->group_get_degree == 0) | |
454 | { | |
455 | ECerr(EC_F_EC_GROUP_GET_DEGREE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
456 | return 0; | |
457 | } | |
458 | return group->meth->group_get_degree(group); | |
48fe4d62 BM |
459 | } |
460 | ||
461 | ||
17d6bb81 | 462 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) |
af28dd6c | 463 | { |
17d6bb81 | 464 | if (group->meth->group_check_discriminant == 0) |
af28dd6c | 465 | { |
17d6bb81 | 466 | ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
af28dd6c BM |
467 | return 0; |
468 | } | |
17d6bb81 | 469 | return group->meth->group_check_discriminant(group, ctx); |
af28dd6c BM |
470 | } |
471 | ||
472 | ||
df9cc153 | 473 | /* this has 'package' visibility */ |
ba729265 BM |
474 | int EC_GROUP_set_extra_data(EC_GROUP *group, void *data, |
475 | void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) | |
df9cc153 | 476 | { |
ba729265 BM |
477 | EC_EXTRA_DATA *d; |
478 | ||
479 | if (group == NULL) | |
df9cc153 | 480 | return 0; |
ba729265 BM |
481 | |
482 | for (d = group->extra_data; d != NULL; d = d->next) | |
483 | { | |
484 | if (d->dup_func == dup_func && d->free_func == free_func && d->clear_free_func == clear_free_func) | |
485 | { | |
486 | ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL); | |
487 | return 0; | |
488 | } | |
df9cc153 BM |
489 | } |
490 | ||
ba729265 BM |
491 | if (data == NULL) |
492 | /* no explicit entry needed */ | |
493 | return 1; | |
494 | ||
495 | d = OPENSSL_malloc(sizeof *d); | |
496 | if (d == NULL) | |
497 | return 0; | |
498 | ||
499 | d->data = data; | |
500 | d->dup_func = dup_func; | |
501 | d->free_func = free_func; | |
502 | d->clear_free_func = clear_free_func; | |
503 | ||
504 | d->next = group->extra_data; | |
505 | group->extra_data = d; | |
506 | ||
df9cc153 BM |
507 | return 1; |
508 | } | |
509 | ||
df9cc153 | 510 | /* this has 'package' visibility */ |
ba729265 BM |
511 | void *EC_GROUP_get_extra_data(const EC_GROUP *group, |
512 | void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) | |
df9cc153 | 513 | { |
ba729265 BM |
514 | EC_EXTRA_DATA *d; |
515 | ||
516 | if (group == NULL) | |
df9cc153 | 517 | return NULL; |
ba729265 BM |
518 | |
519 | for (d = group->extra_data; d != NULL; d = d->next) | |
520 | { | |
521 | if (d->dup_func == dup_func && d->free_func == free_func && d->clear_free_func == clear_free_func) | |
522 | return d->data; | |
df9cc153 | 523 | } |
ba729265 BM |
524 | |
525 | return NULL; | |
526 | } | |
df9cc153 | 527 | |
ba729265 BM |
528 | /* this has 'package' visibility */ |
529 | void EC_GROUP_free_extra_data(EC_GROUP *group, | |
530 | void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) | |
531 | { | |
532 | EC_EXTRA_DATA **p; | |
533 | ||
534 | if (group == NULL) | |
535 | return; | |
536 | ||
537 | for (p = &group->extra_data; *p != NULL; p = &((*p)->next)) | |
538 | { | |
539 | if ((*p)->dup_func == dup_func && (*p)->free_func == free_func && (*p)->clear_free_func == clear_free_func) | |
540 | { | |
541 | EC_EXTRA_DATA *next = (*p)->next; | |
542 | ||
543 | (*p)->free_func((*p)->data); | |
544 | OPENSSL_free(*p); | |
545 | ||
546 | *p = next; | |
547 | return; | |
548 | } | |
549 | } | |
df9cc153 BM |
550 | } |
551 | ||
ba729265 BM |
552 | /* this has 'package' visibility */ |
553 | void EC_GROUP_clear_free_extra_data(EC_GROUP *group, | |
554 | void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) | |
555 | { | |
556 | EC_EXTRA_DATA **p; | |
557 | ||
558 | if (group == NULL) | |
559 | return; | |
560 | ||
561 | for (p = &group->extra_data; *p != NULL; p = &((*p)->next)) | |
562 | { | |
563 | if ((*p)->dup_func == dup_func && (*p)->free_func == free_func && (*p)->clear_free_func == clear_free_func) | |
564 | { | |
565 | EC_EXTRA_DATA *next = (*p)->next; | |
566 | ||
567 | (*p)->clear_free_func((*p)->data); | |
568 | OPENSSL_free(*p); | |
569 | ||
570 | *p = next; | |
571 | return; | |
572 | } | |
573 | } | |
574 | } | |
df9cc153 BM |
575 | |
576 | /* this has 'package' visibility */ | |
ba729265 | 577 | void EC_GROUP_free_all_extra_data(EC_GROUP *group) |
df9cc153 | 578 | { |
ba729265 BM |
579 | EC_EXTRA_DATA *d; |
580 | ||
581 | if (group == NULL) | |
582 | return; | |
583 | ||
584 | d = group->extra_data; | |
585 | while (d) | |
586 | { | |
587 | EC_EXTRA_DATA *next = d->next; | |
588 | ||
589 | d->free_func(d->data); | |
590 | OPENSSL_free(d); | |
591 | ||
592 | d = next; | |
593 | } | |
df9cc153 | 594 | group->extra_data = NULL; |
df9cc153 BM |
595 | } |
596 | ||
df9cc153 | 597 | /* this has 'package' visibility */ |
ba729265 | 598 | void EC_GROUP_clear_free_all_extra_data(EC_GROUP *group) |
df9cc153 | 599 | { |
ba729265 BM |
600 | EC_EXTRA_DATA *d; |
601 | ||
602 | if (group == NULL) | |
603 | return; | |
604 | ||
605 | d = group->extra_data; | |
606 | while (d) | |
607 | { | |
608 | EC_EXTRA_DATA *next = d->next; | |
609 | ||
610 | d->clear_free_func(d->data); | |
611 | OPENSSL_free(d); | |
612 | ||
613 | d = next; | |
614 | } | |
df9cc153 | 615 | group->extra_data = NULL; |
df9cc153 BM |
616 | } |
617 | ||
0657bf9c BM |
618 | |
619 | /* functions for EC_POINT objects */ | |
620 | ||
621 | EC_POINT *EC_POINT_new(const EC_GROUP *group) | |
622 | { | |
623 | EC_POINT *ret; | |
624 | ||
625 | if (group == NULL) | |
626 | { | |
627 | ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
628 | return NULL; | |
629 | } | |
630 | if (group->meth->point_init == 0) | |
631 | { | |
632 | ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
633 | return NULL; | |
634 | } | |
635 | ||
636 | ret = OPENSSL_malloc(sizeof *ret); | |
637 | if (ret == NULL) | |
638 | { | |
639 | ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); | |
640 | return NULL; | |
641 | } | |
642 | ||
643 | ret->meth = group->meth; | |
644 | ||
645 | if (!ret->meth->point_init(ret)) | |
646 | { | |
647 | OPENSSL_free(ret); | |
648 | return NULL; | |
649 | } | |
650 | ||
651 | return ret; | |
652 | } | |
653 | ||
654 | ||
655 | void EC_POINT_free(EC_POINT *point) | |
656 | { | |
7711de24 BM |
657 | if (!point) return; |
658 | ||
0657bf9c BM |
659 | if (point->meth->point_finish != 0) |
660 | point->meth->point_finish(point); | |
661 | OPENSSL_free(point); | |
662 | } | |
663 | ||
664 | ||
665 | void EC_POINT_clear_free(EC_POINT *point) | |
666 | { | |
7711de24 BM |
667 | if (!point) return; |
668 | ||
0657bf9c BM |
669 | if (point->meth->point_clear_finish != 0) |
670 | point->meth->point_clear_finish(point); | |
671 | else if (point->meth != NULL && point->meth->point_finish != 0) | |
672 | point->meth->point_finish(point); | |
4579924b | 673 | OPENSSL_cleanse(point, sizeof *point); |
0657bf9c BM |
674 | OPENSSL_free(point); |
675 | } | |
676 | ||
677 | ||
678 | int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) | |
679 | { | |
680 | if (dest->meth->point_copy == 0) | |
681 | { | |
682 | ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
683 | return 0; | |
684 | } | |
685 | if (dest->meth != src->meth) | |
686 | { | |
687 | ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
688 | return 0; | |
689 | } | |
91f29a38 BM |
690 | if (dest == src) |
691 | return 1; | |
0657bf9c BM |
692 | return dest->meth->point_copy(dest, src); |
693 | } | |
694 | ||
695 | ||
7793f30e BM |
696 | EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group) |
697 | { | |
698 | EC_POINT *t; | |
699 | int r; | |
700 | ||
701 | if (a == NULL) return NULL; | |
702 | ||
703 | t = EC_POINT_new(group); | |
704 | if (t == NULL) return(NULL); | |
705 | r = EC_POINT_copy(t, a); | |
706 | if (!r) | |
707 | { | |
708 | EC_POINT_free(t); | |
709 | return NULL; | |
710 | } | |
711 | else return t; | |
712 | } | |
713 | ||
714 | ||
48fe4d62 BM |
715 | const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) |
716 | { | |
717 | return point->meth; | |
718 | } | |
719 | ||
720 | ||
226cc7de BM |
721 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) |
722 | { | |
723 | if (group->meth->point_set_to_infinity == 0) | |
724 | { | |
725 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
726 | return 0; | |
727 | } | |
728 | if (group->meth != point->meth) | |
729 | { | |
730 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
731 | return 0; | |
732 | } | |
733 | return group->meth->point_set_to_infinity(group, point); | |
734 | } | |
735 | ||
736 | ||
1d5bd6cf BM |
737 | int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
738 | const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx) | |
739 | { | |
35b73a1f | 740 | if (group->meth->point_set_Jprojective_coordinates_GFp == 0) |
1d5bd6cf BM |
741 | { |
742 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
743 | return 0; | |
744 | } | |
745 | if (group->meth != point->meth) | |
746 | { | |
747 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
748 | return 0; | |
749 | } | |
35b73a1f | 750 | return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); |
1d5bd6cf BM |
751 | } |
752 | ||
753 | ||
754 | int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
755 | BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx) | |
756 | { | |
35b73a1f | 757 | if (group->meth->point_get_Jprojective_coordinates_GFp == 0) |
1d5bd6cf BM |
758 | { |
759 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
760 | return 0; | |
761 | } | |
762 | if (group->meth != point->meth) | |
763 | { | |
764 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
765 | return 0; | |
766 | } | |
35b73a1f | 767 | return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); |
1d5bd6cf BM |
768 | } |
769 | ||
770 | ||
226cc7de BM |
771 | int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
772 | const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) | |
773 | { | |
7793f30e | 774 | if (group->meth->point_set_affine_coordinates == 0) |
226cc7de BM |
775 | { |
776 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
777 | return 0; | |
778 | } | |
779 | if (group->meth != point->meth) | |
780 | { | |
781 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
782 | return 0; | |
783 | } | |
7793f30e | 784 | return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); |
226cc7de BM |
785 | } |
786 | ||
787 | ||
35b73a1f BM |
788 | int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *point, |
789 | const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) | |
7793f30e | 790 | { |
35b73a1f | 791 | if (group->meth->point_set_affine_coordinates == 0) |
7793f30e | 792 | { |
35b73a1f | 793 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
7793f30e BM |
794 | return 0; |
795 | } | |
796 | if (group->meth != point->meth) | |
797 | { | |
35b73a1f | 798 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, EC_R_INCOMPATIBLE_OBJECTS); |
7793f30e BM |
799 | return 0; |
800 | } | |
35b73a1f | 801 | return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); |
7793f30e BM |
802 | } |
803 | ||
804 | ||
35b73a1f BM |
805 | int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, |
806 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx) | |
7793f30e | 807 | { |
35b73a1f | 808 | if (group->meth->point_get_affine_coordinates == 0) |
7793f30e | 809 | { |
35b73a1f | 810 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
7793f30e BM |
811 | return 0; |
812 | } | |
813 | if (group->meth != point->meth) | |
814 | { | |
35b73a1f | 815 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); |
7793f30e BM |
816 | return 0; |
817 | } | |
35b73a1f | 818 | return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); |
7793f30e BM |
819 | } |
820 | ||
821 | ||
35b73a1f BM |
822 | int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, const EC_POINT *point, |
823 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx) | |
7793f30e | 824 | { |
35b73a1f | 825 | if (group->meth->point_get_affine_coordinates == 0) |
7793f30e | 826 | { |
35b73a1f | 827 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
7793f30e BM |
828 | return 0; |
829 | } | |
830 | if (group->meth != point->meth) | |
831 | { | |
35b73a1f | 832 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, EC_R_INCOMPATIBLE_OBJECTS); |
7793f30e BM |
833 | return 0; |
834 | } | |
35b73a1f | 835 | return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); |
7793f30e BM |
836 | } |
837 | ||
838 | ||
35b73a1f BM |
839 | int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
840 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
7793f30e | 841 | { |
35b73a1f | 842 | if (group->meth->point_set_compressed_coordinates == 0) |
7793f30e | 843 | { |
35b73a1f | 844 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
7793f30e BM |
845 | return 0; |
846 | } | |
847 | if (group->meth != point->meth) | |
848 | { | |
35b73a1f | 849 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); |
7793f30e BM |
850 | return 0; |
851 | } | |
35b73a1f | 852 | return group->meth->point_set_compressed_coordinates(group, point, x, y_bit, ctx); |
7793f30e BM |
853 | } |
854 | ||
855 | ||
856 | int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, EC_POINT *point, | |
857 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
858 | { | |
859 | if (group->meth->point_set_compressed_coordinates == 0) | |
860 | { | |
861 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
862 | return 0; | |
863 | } | |
864 | if (group->meth != point->meth) | |
865 | { | |
866 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, EC_R_INCOMPATIBLE_OBJECTS); | |
867 | return 0; | |
868 | } | |
869 | return group->meth->point_set_compressed_coordinates(group, point, x, y_bit, ctx); | |
1d5bd6cf | 870 | } |
0657bf9c BM |
871 | |
872 | ||
873 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, | |
874 | unsigned char *buf, size_t len, BN_CTX *ctx) | |
875 | { | |
876 | if (group->meth->point2oct == 0) | |
877 | { | |
878 | ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
879 | return 0; | |
880 | } | |
881 | if (group->meth != point->meth) | |
882 | { | |
883 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); | |
884 | return 0; | |
885 | } | |
886 | return group->meth->point2oct(group, point, form, buf, len, ctx); | |
887 | } | |
888 | ||
889 | ||
890 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, | |
891 | const unsigned char *buf, size_t len, BN_CTX *ctx) | |
892 | { | |
893 | if (group->meth->oct2point == 0) | |
894 | { | |
895 | ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
896 | return 0; | |
897 | } | |
898 | if (group->meth != point->meth) | |
899 | { | |
900 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); | |
901 | return 0; | |
902 | } | |
903 | return group->meth->oct2point(group, point, buf, len, ctx); | |
904 | } | |
905 | ||
906 | ||
907 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) | |
908 | { | |
909 | if (group->meth->add == 0) | |
910 | { | |
911 | ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
912 | return 0; | |
913 | } | |
914 | if ((group->meth != r->meth) || (r->meth != a->meth) || (a->meth != b->meth)) | |
915 | { | |
916 | ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); | |
917 | return 0; | |
918 | } | |
919 | return group->meth->add(group, r, a, b, ctx); | |
920 | } | |
921 | ||
922 | ||
923 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx) | |
924 | { | |
925 | if (group->meth->dbl == 0) | |
926 | { | |
927 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
928 | return 0; | |
929 | } | |
930 | if ((group->meth != r->meth) || (r->meth != a->meth)) | |
931 | { | |
932 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
933 | return 0; | |
934 | } | |
935 | return group->meth->dbl(group, r, a, ctx); | |
936 | } | |
937 | ||
938 | ||
1d5bd6cf BM |
939 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) |
940 | { | |
941 | if (group->meth->dbl == 0) | |
942 | { | |
943 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
944 | return 0; | |
945 | } | |
946 | if (group->meth != a->meth) | |
947 | { | |
948 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
949 | return 0; | |
950 | } | |
951 | return group->meth->invert(group, a, ctx); | |
952 | } | |
953 | ||
954 | ||
0657bf9c BM |
955 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) |
956 | { | |
957 | if (group->meth->is_at_infinity == 0) | |
958 | { | |
959 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
960 | return 0; | |
961 | } | |
962 | if (group->meth != point->meth) | |
963 | { | |
964 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
965 | return 0; | |
966 | } | |
967 | return group->meth->is_at_infinity(group, point); | |
968 | } | |
969 | ||
970 | ||
971 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx) | |
972 | { | |
973 | if (group->meth->is_on_curve == 0) | |
974 | { | |
975 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
976 | return 0; | |
977 | } | |
978 | if (group->meth != point->meth) | |
979 | { | |
980 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); | |
981 | return 0; | |
982 | } | |
983 | return group->meth->is_on_curve(group, point, ctx); | |
984 | } | |
985 | ||
986 | ||
1d5bd6cf BM |
987 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) |
988 | { | |
989 | if (group->meth->point_cmp == 0) | |
990 | { | |
991 | ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
992 | return 0; | |
993 | } | |
994 | if ((group->meth != a->meth) || (a->meth != b->meth)) | |
995 | { | |
996 | ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); | |
997 | return 0; | |
998 | } | |
999 | return group->meth->point_cmp(group, a, b, ctx); | |
1000 | } | |
1001 | ||
1002 | ||
e869d4bd | 1003 | int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) |
0657bf9c BM |
1004 | { |
1005 | if (group->meth->make_affine == 0) | |
1006 | { | |
1007 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1008 | return 0; | |
1009 | } | |
1010 | if (group->meth != point->meth) | |
1011 | { | |
1012 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
1013 | return 0; | |
1014 | } | |
1015 | return group->meth->make_affine(group, point, ctx); | |
1016 | } | |
48fe4d62 BM |
1017 | |
1018 | ||
1019 | int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx) | |
1020 | { | |
1021 | size_t i; | |
1022 | ||
1023 | if (group->meth->points_make_affine == 0) | |
1024 | { | |
1025 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1026 | return 0; | |
1027 | } | |
1028 | for (i = 0; i < num; i++) | |
1029 | { | |
1030 | if (group->meth != points[i]->meth) | |
1031 | { | |
1032 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
1033 | return 0; | |
1034 | } | |
1035 | } | |
1036 | return group->meth->points_make_affine(group, num, points, ctx); | |
1037 | } | |
37c660ff BM |
1038 | |
1039 | ||
1040 | /* Functions for point multiplication. | |
1041 | * | |
1042 | * If group->meth->mul is 0, we use the wNAF-based implementations in ec_mult.c; | |
1043 | * otherwise we dispatch through methods. | |
1044 | */ | |
1045 | ||
1046 | int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar, | |
1047 | size_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx) | |
1048 | { | |
1049 | if (group->meth->mul == 0) | |
1050 | /* use default */ | |
1051 | return ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx); | |
1052 | ||
1053 | return group->meth->mul(group, r, scalar, num, points, scalars, ctx); | |
1054 | } | |
1055 | ||
1056 | int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar, | |
1057 | const EC_POINT *point, const BIGNUM *p_scalar, BN_CTX *ctx) | |
1058 | { | |
1059 | /* just a convenient interface to EC_POINTs_mul() */ | |
1060 | ||
1061 | const EC_POINT *points[1]; | |
1062 | const BIGNUM *scalars[1]; | |
1063 | ||
1064 | points[0] = point; | |
1065 | scalars[0] = p_scalar; | |
1066 | ||
1067 | return EC_POINTs_mul(group, r, g_scalar, (point != NULL && p_scalar != NULL), points, scalars, ctx); | |
1068 | } | |
1069 | ||
1070 | int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx) | |
1071 | { | |
1072 | if (group->meth->mul == 0) | |
1073 | /* use default */ | |
1074 | return ec_wNAF_precompute_mult(group, ctx); | |
1075 | ||
1076 | if (group->meth->precompute_mult != 0) | |
1077 | return group->meth->precompute_mult(group, ctx); | |
1078 | else | |
1079 | return 1; /* nothing to do, so report success */ | |
1080 | } | |
1081 | ||
1082 | int EC_GROUP_have_precompute_mult(const EC_GROUP *group) | |
1083 | { | |
1084 | if (group->meth->mul == 0) | |
1085 | /* use default */ | |
1086 | return ec_wNAF_have_precompute_mult(group); | |
1087 | ||
1088 | if (group->meth->have_precompute_mult != 0) | |
1089 | return group->meth->have_precompute_mult(group); | |
1090 | else | |
1091 | return 0; /* cannot tell whether precomputation has been performed */ | |
1092 | } |