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65e81670 BM |
1 | /* crypto/ec/ec_lib.c */ |
2 | /* ==================================================================== | |
4d94ae00 | 3 | * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. |
65e81670 BM |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in | |
14 | * the documentation and/or other materials provided with the | |
15 | * distribution. | |
16 | * | |
17 | * 3. All advertising materials mentioning features or use of this | |
18 | * software must display the following acknowledgment: | |
19 | * "This product includes software developed by the OpenSSL Project | |
20 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
21 | * | |
22 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
23 | * endorse or promote products derived from this software without | |
24 | * prior written permission. For written permission, please contact | |
25 | * openssl-core@openssl.org. | |
26 | * | |
27 | * 5. Products derived from this software may not be called "OpenSSL" | |
28 | * nor may "OpenSSL" appear in their names without prior written | |
29 | * permission of the OpenSSL Project. | |
30 | * | |
31 | * 6. Redistributions of any form whatsoever must retain the following | |
32 | * acknowledgment: | |
33 | * "This product includes software developed by the OpenSSL Project | |
34 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
35 | * | |
36 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
37 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
38 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
39 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
40 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
41 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
42 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
43 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
44 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
45 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
46 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
47 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 | * ==================================================================== | |
49 | * | |
50 | * This product includes cryptographic software written by Eric Young | |
51 | * (eay@cryptsoft.com). This product includes software written by Tim | |
52 | * Hudson (tjh@cryptsoft.com). | |
53 | * | |
54 | */ | |
55 | ||
c4b36ff4 BM |
56 | #include <string.h> |
57 | ||
0657bf9c | 58 | #include <openssl/err.h> |
bb62a8b0 | 59 | #include <openssl/opensslv.h> |
0657bf9c | 60 | |
65e81670 | 61 | #include "ec_lcl.h" |
0657bf9c | 62 | |
bb62a8b0 BM |
63 | static const char EC_version[] = "EC" OPENSSL_VERSION_PTEXT; |
64 | ||
0657bf9c BM |
65 | |
66 | /* functions for EC_GROUP objects */ | |
67 | ||
68 | EC_GROUP *EC_GROUP_new(const EC_METHOD *meth) | |
69 | { | |
70 | EC_GROUP *ret; | |
71 | ||
72 | if (meth == NULL) | |
73 | { | |
74 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
75 | return NULL; | |
76 | } | |
77 | if (meth->group_init == 0) | |
78 | { | |
79 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
80 | return NULL; | |
81 | } | |
82 | ||
83 | ret = OPENSSL_malloc(sizeof *ret); | |
84 | if (ret == NULL) | |
85 | { | |
86 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); | |
87 | return NULL; | |
88 | } | |
89 | ||
90 | ret->meth = meth; | |
df9cc153 BM |
91 | |
92 | ret->extra_data = NULL; | |
93 | ret->extra_data_dup_func = 0; | |
94 | ret->extra_data_free_func = 0; | |
95 | ret->extra_data_clear_free_func = 0; | |
945e15a2 | 96 | |
b6db386f BM |
97 | ret->generator = NULL; |
98 | BN_init(&ret->order); | |
99 | BN_init(&ret->cofactor); | |
100 | ||
945e15a2 | 101 | ret->nid = 0; |
458c2917 BM |
102 | ret->asn1_flag = OPENSSL_EC_EXPLICIT | OPENSSL_EC_COMPRESSED; |
103 | ||
104 | ret->seed = NULL; | |
105 | ret->seed_len = 0; | |
945e15a2 | 106 | |
0657bf9c BM |
107 | if (!meth->group_init(ret)) |
108 | { | |
109 | OPENSSL_free(ret); | |
110 | return NULL; | |
111 | } | |
112 | ||
113 | return ret; | |
114 | } | |
115 | ||
116 | ||
0657bf9c BM |
117 | void EC_GROUP_free(EC_GROUP *group) |
118 | { | |
7711de24 BM |
119 | if (!group) return; |
120 | ||
0657bf9c BM |
121 | if (group->meth->group_finish != 0) |
122 | group->meth->group_finish(group); | |
df9cc153 BM |
123 | |
124 | EC_GROUP_free_extra_data(group); | |
125 | ||
b6db386f BM |
126 | if (group->generator != NULL) |
127 | EC_POINT_free(group->generator); | |
128 | BN_free(&group->order); | |
129 | BN_free(&group->cofactor); | |
130 | ||
458c2917 BM |
131 | if (group->seed) |
132 | OPENSSL_free(group->seed); | |
133 | ||
0657bf9c BM |
134 | OPENSSL_free(group); |
135 | } | |
136 | ||
137 | ||
138 | void EC_GROUP_clear_free(EC_GROUP *group) | |
139 | { | |
7711de24 BM |
140 | if (!group) return; |
141 | ||
0657bf9c BM |
142 | if (group->meth->group_clear_finish != 0) |
143 | group->meth->group_clear_finish(group); | |
144 | else if (group->meth != NULL && group->meth->group_finish != 0) | |
145 | group->meth->group_finish(group); | |
df9cc153 BM |
146 | |
147 | EC_GROUP_clear_free_extra_data(group); | |
148 | ||
b6db386f BM |
149 | if (group->generator != NULL) |
150 | EC_POINT_clear_free(group->generator); | |
151 | BN_clear_free(&group->order); | |
152 | BN_clear_free(&group->cofactor); | |
153 | ||
458c2917 BM |
154 | if (group->seed) |
155 | { | |
156 | memset(group->seed, 0, group->seed_len); | |
157 | OPENSSL_free(group->seed); | |
158 | } | |
159 | ||
c4b36ff4 | 160 | memset(group, 0, sizeof *group); |
0657bf9c BM |
161 | OPENSSL_free(group); |
162 | } | |
163 | ||
164 | ||
165 | int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) | |
166 | { | |
167 | if (dest->meth->group_copy == 0) | |
168 | { | |
169 | ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
170 | return 0; | |
171 | } | |
172 | if (dest->meth != src->meth) | |
173 | { | |
174 | ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
175 | return 0; | |
176 | } | |
1d5bd6cf BM |
177 | if (dest == src) |
178 | return 1; | |
0657bf9c | 179 | |
df9cc153 BM |
180 | EC_GROUP_clear_free_extra_data(dest); |
181 | if (src->extra_data_dup_func) | |
182 | { | |
183 | if (src->extra_data != NULL) | |
184 | { | |
185 | dest->extra_data = src->extra_data_dup_func(src->extra_data); | |
186 | if (dest->extra_data == NULL) | |
187 | return 0; | |
188 | } | |
189 | ||
190 | dest->extra_data_dup_func = src->extra_data_dup_func; | |
191 | dest->extra_data_free_func = src->extra_data_free_func; | |
192 | dest->extra_data_clear_free_func = src->extra_data_clear_free_func; | |
193 | } | |
194 | ||
b6db386f BM |
195 | if (src->generator != NULL) |
196 | { | |
197 | if (dest->generator == NULL) | |
198 | { | |
199 | dest->generator = EC_POINT_new(dest); | |
200 | if (dest->generator == NULL) return 0; | |
201 | } | |
202 | if (!EC_POINT_copy(dest->generator, src->generator)) return 0; | |
203 | } | |
204 | else | |
205 | { | |
206 | /* src->generator == NULL */ | |
207 | if (dest->generator != NULL) | |
208 | { | |
209 | EC_POINT_clear_free(dest->generator); | |
210 | dest->generator = NULL; | |
211 | } | |
212 | } | |
213 | ||
214 | if (!BN_copy(&dest->order, &src->order)) return 0; | |
215 | if (!BN_copy(&dest->cofactor, &src->cofactor)) return 0; | |
216 | ||
217 | dest->nid = src->nid; | |
458c2917 BM |
218 | dest->asn1_flag = src->asn1_flag; |
219 | ||
220 | if (src->seed) | |
221 | { | |
222 | if (dest->seed) | |
223 | OPENSSL_free(dest->seed); | |
224 | dest->seed = OPENSSL_malloc(src->seed_len); | |
225 | if (dest->seed == NULL) | |
226 | return 0; | |
227 | if (!memcpy(dest->seed, src->seed, src->seed_len)) | |
228 | return 0; | |
229 | dest->seed_len = src->seed_len; | |
230 | } | |
231 | else | |
232 | { | |
233 | if (dest->seed) | |
234 | OPENSSL_free(dest->seed); | |
235 | dest->seed = NULL; | |
236 | dest->seed_len = 0; | |
237 | } | |
238 | ||
b6db386f | 239 | |
0657bf9c BM |
240 | return dest->meth->group_copy(dest, src); |
241 | } | |
242 | ||
243 | ||
48fe4d62 BM |
244 | const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) |
245 | { | |
246 | return group->meth; | |
247 | } | |
248 | ||
249 | ||
458c2917 BM |
250 | int EC_METHOD_get_field_type(const EC_METHOD *meth) |
251 | { | |
252 | return meth->field_type; | |
253 | } | |
254 | ||
255 | ||
b6db386f | 256 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) |
bb62a8b0 | 257 | { |
b6db386f | 258 | if (generator == NULL) |
bb62a8b0 | 259 | { |
b6db386f BM |
260 | ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); |
261 | return 0 ; | |
bb62a8b0 | 262 | } |
b6db386f BM |
263 | |
264 | if (group->generator == NULL) | |
265 | { | |
266 | group->generator = EC_POINT_new(group); | |
267 | if (group->generator == NULL) return 0; | |
268 | } | |
269 | if (!EC_POINT_copy(group->generator, generator)) return 0; | |
270 | ||
271 | if (order != NULL) | |
272 | { if (!BN_copy(&group->order, order)) return 0; } | |
273 | else | |
274 | { if (!BN_zero(&group->order)) return 0; } | |
275 | ||
276 | if (cofactor != NULL) | |
277 | { if (!BN_copy(&group->cofactor, cofactor)) return 0; } | |
278 | else | |
279 | { if (!BN_zero(&group->cofactor)) return 0; } | |
280 | ||
281 | return 1; | |
bb62a8b0 BM |
282 | } |
283 | ||
284 | ||
b6db386f | 285 | EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) |
bb62a8b0 | 286 | { |
b6db386f | 287 | return group->generator; |
bb62a8b0 BM |
288 | } |
289 | ||
290 | ||
b6db386f | 291 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) |
0657bf9c | 292 | { |
b6db386f | 293 | if (!BN_copy(order, &group->order)) |
0657bf9c | 294 | return 0; |
b6db386f BM |
295 | |
296 | return !BN_is_zero(order); | |
0657bf9c BM |
297 | } |
298 | ||
299 | ||
b6db386f | 300 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) |
48fe4d62 | 301 | { |
b6db386f | 302 | if (!BN_copy(cofactor, &group->cofactor)) |
48fe4d62 | 303 | return 0; |
b6db386f BM |
304 | |
305 | return !BN_is_zero(&group->cofactor); | |
48fe4d62 BM |
306 | } |
307 | ||
308 | ||
b6db386f BM |
309 | void EC_GROUP_set_nid(EC_GROUP *group, int nid) |
310 | { | |
311 | group->nid = nid; | |
312 | } | |
313 | ||
314 | ||
315 | int EC_GROUP_get_nid(const EC_GROUP *group) | |
316 | { | |
317 | return group->nid; | |
318 | } | |
319 | ||
320 | ||
458c2917 BM |
321 | void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) |
322 | { | |
323 | group->asn1_flag = flag; | |
324 | } | |
325 | ||
326 | ||
327 | int EC_GROUP_get_asn1_flag(const EC_GROUP *group) | |
328 | { | |
329 | return group->asn1_flag; | |
330 | } | |
331 | ||
332 | ||
b6db386f | 333 | int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 334 | { |
b6db386f | 335 | if (group->meth->group_set_curve_GFp == 0) |
48fe4d62 | 336 | { |
b6db386f | 337 | ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
338 | return 0; |
339 | } | |
b6db386f | 340 | return group->meth->group_set_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
341 | } |
342 | ||
343 | ||
b6db386f | 344 | int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 345 | { |
b6db386f | 346 | if (group->meth->group_get_curve_GFp == 0) |
48fe4d62 | 347 | { |
b6db386f | 348 | ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
349 | return 0; |
350 | } | |
b6db386f | 351 | return group->meth->group_get_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
352 | } |
353 | ||
354 | ||
17d6bb81 | 355 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) |
af28dd6c | 356 | { |
17d6bb81 | 357 | if (group->meth->group_check_discriminant == 0) |
af28dd6c | 358 | { |
17d6bb81 | 359 | ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
af28dd6c BM |
360 | return 0; |
361 | } | |
17d6bb81 | 362 | return group->meth->group_check_discriminant(group, ctx); |
af28dd6c BM |
363 | } |
364 | ||
365 | ||
df9cc153 BM |
366 | /* this has 'package' visibility */ |
367 | int EC_GROUP_set_extra_data(EC_GROUP *group, void *extra_data, void *(*extra_data_dup_func)(void *), | |
368 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) | |
369 | { | |
370 | if ((group->extra_data != NULL) | |
371 | || (group->extra_data_dup_func != 0) | |
372 | || (group->extra_data_free_func != 0) | |
373 | || (group->extra_data_clear_free_func != 0)) | |
374 | { | |
375 | ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | group->extra_data = extra_data; | |
380 | group->extra_data_dup_func = extra_data_dup_func; | |
381 | group->extra_data_free_func = extra_data_free_func; | |
382 | group->extra_data_clear_free_func = extra_data_clear_free_func; | |
383 | return 1; | |
384 | } | |
385 | ||
386 | ||
387 | /* this has 'package' visibility */ | |
48fe4d62 | 388 | void *EC_GROUP_get_extra_data(const EC_GROUP *group, void *(*extra_data_dup_func)(void *), |
df9cc153 BM |
389 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) |
390 | { | |
391 | if ((group->extra_data_dup_func != extra_data_dup_func) | |
392 | || (group->extra_data_free_func != extra_data_free_func) | |
393 | || (group->extra_data_clear_free_func != extra_data_clear_free_func)) | |
394 | { | |
395 | ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA, EC_R_NO_SUCH_EXTRA_DATA); | |
396 | return NULL; | |
397 | } | |
398 | ||
399 | return group->extra_data; | |
400 | } | |
401 | ||
402 | ||
403 | /* this has 'package' visibility */ | |
404 | void EC_GROUP_free_extra_data(EC_GROUP *group) | |
405 | { | |
406 | if (group->extra_data_free_func) | |
407 | group->extra_data_free_func(group->extra_data); | |
408 | group->extra_data = NULL; | |
409 | group->extra_data_dup_func = 0; | |
410 | group->extra_data_free_func = 0; | |
411 | group->extra_data_clear_free_func = 0; | |
412 | } | |
413 | ||
414 | ||
415 | /* this has 'package' visibility */ | |
416 | void EC_GROUP_clear_free_extra_data(EC_GROUP *group) | |
417 | { | |
418 | if (group->extra_data_clear_free_func) | |
419 | group->extra_data_clear_free_func(group->extra_data); | |
420 | else if (group->extra_data_free_func) | |
421 | group->extra_data_free_func(group->extra_data); | |
422 | group->extra_data = NULL; | |
423 | group->extra_data_dup_func = 0; | |
424 | group->extra_data_free_func = 0; | |
425 | group->extra_data_clear_free_func = 0; | |
426 | } | |
427 | ||
0657bf9c BM |
428 | |
429 | /* functions for EC_POINT objects */ | |
430 | ||
431 | EC_POINT *EC_POINT_new(const EC_GROUP *group) | |
432 | { | |
433 | EC_POINT *ret; | |
434 | ||
435 | if (group == NULL) | |
436 | { | |
437 | ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
438 | return NULL; | |
439 | } | |
440 | if (group->meth->point_init == 0) | |
441 | { | |
442 | ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
443 | return NULL; | |
444 | } | |
445 | ||
446 | ret = OPENSSL_malloc(sizeof *ret); | |
447 | if (ret == NULL) | |
448 | { | |
449 | ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); | |
450 | return NULL; | |
451 | } | |
452 | ||
453 | ret->meth = group->meth; | |
454 | ||
455 | if (!ret->meth->point_init(ret)) | |
456 | { | |
457 | OPENSSL_free(ret); | |
458 | return NULL; | |
459 | } | |
460 | ||
461 | return ret; | |
462 | } | |
463 | ||
464 | ||
465 | void EC_POINT_free(EC_POINT *point) | |
466 | { | |
7711de24 BM |
467 | if (!point) return; |
468 | ||
0657bf9c BM |
469 | if (point->meth->point_finish != 0) |
470 | point->meth->point_finish(point); | |
471 | OPENSSL_free(point); | |
472 | } | |
473 | ||
474 | ||
475 | void EC_POINT_clear_free(EC_POINT *point) | |
476 | { | |
7711de24 BM |
477 | if (!point) return; |
478 | ||
0657bf9c BM |
479 | if (point->meth->point_clear_finish != 0) |
480 | point->meth->point_clear_finish(point); | |
481 | else if (point->meth != NULL && point->meth->point_finish != 0) | |
482 | point->meth->point_finish(point); | |
f418f8c1 | 483 | memset(point, 0, sizeof *point); |
0657bf9c BM |
484 | OPENSSL_free(point); |
485 | } | |
486 | ||
487 | ||
488 | int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) | |
489 | { | |
490 | if (dest->meth->point_copy == 0) | |
491 | { | |
492 | ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
493 | return 0; | |
494 | } | |
495 | if (dest->meth != src->meth) | |
496 | { | |
497 | ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
498 | return 0; | |
499 | } | |
91f29a38 BM |
500 | if (dest == src) |
501 | return 1; | |
0657bf9c BM |
502 | return dest->meth->point_copy(dest, src); |
503 | } | |
504 | ||
505 | ||
48fe4d62 BM |
506 | const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) |
507 | { | |
508 | return point->meth; | |
509 | } | |
510 | ||
511 | ||
226cc7de BM |
512 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) |
513 | { | |
514 | if (group->meth->point_set_to_infinity == 0) | |
515 | { | |
516 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
517 | return 0; | |
518 | } | |
519 | if (group->meth != point->meth) | |
520 | { | |
521 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
522 | return 0; | |
523 | } | |
524 | return group->meth->point_set_to_infinity(group, point); | |
525 | } | |
526 | ||
527 | ||
1d5bd6cf BM |
528 | int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
529 | const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx) | |
530 | { | |
531 | if (group->meth->point_set_Jprojective_coordinates_GFp == 0) | |
532 | { | |
533 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
534 | return 0; | |
535 | } | |
536 | if (group->meth != point->meth) | |
537 | { | |
538 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
539 | return 0; | |
540 | } | |
541 | return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
542 | } | |
543 | ||
544 | ||
545 | int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
546 | BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx) | |
547 | { | |
548 | if (group->meth->point_get_Jprojective_coordinates_GFp == 0) | |
549 | { | |
550 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
551 | return 0; | |
552 | } | |
553 | if (group->meth != point->meth) | |
554 | { | |
555 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
556 | return 0; | |
557 | } | |
558 | return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
559 | } | |
560 | ||
561 | ||
226cc7de BM |
562 | int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
563 | const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) | |
564 | { | |
565 | if (group->meth->point_set_affine_coordinates_GFp == 0) | |
566 | { | |
567 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
568 | return 0; | |
569 | } | |
570 | if (group->meth != point->meth) | |
571 | { | |
572 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
573 | return 0; | |
574 | } | |
575 | return group->meth->point_set_affine_coordinates_GFp(group, point, x, y, ctx); | |
576 | } | |
577 | ||
578 | ||
579 | int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
580 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx) | |
581 | { | |
582 | if (group->meth->point_get_affine_coordinates_GFp == 0) | |
583 | { | |
584 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
585 | return 0; | |
586 | } | |
587 | if (group->meth != point->meth) | |
588 | { | |
589 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
590 | return 0; | |
591 | } | |
592 | return group->meth->point_get_affine_coordinates_GFp(group, point, x, y, ctx); | |
593 | } | |
594 | ||
595 | ||
1d5bd6cf BM |
596 | int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
597 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
598 | { | |
599 | if (group->meth->point_set_compressed_coordinates_GFp == 0) | |
600 | { | |
601 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
602 | return 0; | |
603 | } | |
604 | if (group->meth != point->meth) | |
605 | { | |
606 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
607 | return 0; | |
608 | } | |
609 | return group->meth->point_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx); | |
610 | } | |
0657bf9c BM |
611 | |
612 | ||
613 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, | |
614 | unsigned char *buf, size_t len, BN_CTX *ctx) | |
615 | { | |
616 | if (group->meth->point2oct == 0) | |
617 | { | |
618 | ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
619 | return 0; | |
620 | } | |
621 | if (group->meth != point->meth) | |
622 | { | |
623 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); | |
624 | return 0; | |
625 | } | |
626 | return group->meth->point2oct(group, point, form, buf, len, ctx); | |
627 | } | |
628 | ||
629 | ||
630 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, | |
631 | const unsigned char *buf, size_t len, BN_CTX *ctx) | |
632 | { | |
633 | if (group->meth->oct2point == 0) | |
634 | { | |
635 | ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
636 | return 0; | |
637 | } | |
638 | if (group->meth != point->meth) | |
639 | { | |
640 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); | |
641 | return 0; | |
642 | } | |
643 | return group->meth->oct2point(group, point, buf, len, ctx); | |
644 | } | |
645 | ||
646 | ||
647 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) | |
648 | { | |
649 | if (group->meth->add == 0) | |
650 | { | |
651 | ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
652 | return 0; | |
653 | } | |
654 | if ((group->meth != r->meth) || (r->meth != a->meth) || (a->meth != b->meth)) | |
655 | { | |
656 | ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); | |
657 | return 0; | |
658 | } | |
659 | return group->meth->add(group, r, a, b, ctx); | |
660 | } | |
661 | ||
662 | ||
663 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx) | |
664 | { | |
665 | if (group->meth->dbl == 0) | |
666 | { | |
667 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
668 | return 0; | |
669 | } | |
670 | if ((group->meth != r->meth) || (r->meth != a->meth)) | |
671 | { | |
672 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
673 | return 0; | |
674 | } | |
675 | return group->meth->dbl(group, r, a, ctx); | |
676 | } | |
677 | ||
678 | ||
1d5bd6cf BM |
679 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) |
680 | { | |
681 | if (group->meth->dbl == 0) | |
682 | { | |
683 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
684 | return 0; | |
685 | } | |
686 | if (group->meth != a->meth) | |
687 | { | |
688 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
689 | return 0; | |
690 | } | |
691 | return group->meth->invert(group, a, ctx); | |
692 | } | |
693 | ||
694 | ||
0657bf9c BM |
695 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) |
696 | { | |
697 | if (group->meth->is_at_infinity == 0) | |
698 | { | |
699 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
700 | return 0; | |
701 | } | |
702 | if (group->meth != point->meth) | |
703 | { | |
704 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
705 | return 0; | |
706 | } | |
707 | return group->meth->is_at_infinity(group, point); | |
708 | } | |
709 | ||
710 | ||
711 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx) | |
712 | { | |
713 | if (group->meth->is_on_curve == 0) | |
714 | { | |
715 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
716 | return 0; | |
717 | } | |
718 | if (group->meth != point->meth) | |
719 | { | |
720 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); | |
721 | return 0; | |
722 | } | |
723 | return group->meth->is_on_curve(group, point, ctx); | |
724 | } | |
725 | ||
726 | ||
1d5bd6cf BM |
727 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) |
728 | { | |
729 | if (group->meth->point_cmp == 0) | |
730 | { | |
731 | ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
732 | return 0; | |
733 | } | |
734 | if ((group->meth != a->meth) || (a->meth != b->meth)) | |
735 | { | |
736 | ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); | |
737 | return 0; | |
738 | } | |
739 | return group->meth->point_cmp(group, a, b, ctx); | |
740 | } | |
741 | ||
742 | ||
e869d4bd | 743 | int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) |
0657bf9c BM |
744 | { |
745 | if (group->meth->make_affine == 0) | |
746 | { | |
747 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
748 | return 0; | |
749 | } | |
750 | if (group->meth != point->meth) | |
751 | { | |
752 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
753 | return 0; | |
754 | } | |
755 | return group->meth->make_affine(group, point, ctx); | |
756 | } | |
48fe4d62 BM |
757 | |
758 | ||
759 | int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx) | |
760 | { | |
761 | size_t i; | |
762 | ||
763 | if (group->meth->points_make_affine == 0) | |
764 | { | |
765 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
766 | return 0; | |
767 | } | |
768 | for (i = 0; i < num; i++) | |
769 | { | |
770 | if (group->meth != points[i]->meth) | |
771 | { | |
772 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
773 | return 0; | |
774 | } | |
775 | } | |
776 | return group->meth->points_make_affine(group, num, points, ctx); | |
777 | } |