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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 BM |
101 | ret->nid = 0; |
102 | ||
0657bf9c BM |
103 | if (!meth->group_init(ret)) |
104 | { | |
105 | OPENSSL_free(ret); | |
106 | return NULL; | |
107 | } | |
108 | ||
109 | return ret; | |
110 | } | |
111 | ||
112 | ||
0657bf9c BM |
113 | void EC_GROUP_free(EC_GROUP *group) |
114 | { | |
7711de24 BM |
115 | if (!group) return; |
116 | ||
0657bf9c BM |
117 | if (group->meth->group_finish != 0) |
118 | group->meth->group_finish(group); | |
df9cc153 BM |
119 | |
120 | EC_GROUP_free_extra_data(group); | |
121 | ||
b6db386f BM |
122 | if (group->generator != NULL) |
123 | EC_POINT_free(group->generator); | |
124 | BN_free(&group->order); | |
125 | BN_free(&group->cofactor); | |
126 | ||
0657bf9c BM |
127 | OPENSSL_free(group); |
128 | } | |
129 | ||
130 | ||
131 | void EC_GROUP_clear_free(EC_GROUP *group) | |
132 | { | |
7711de24 BM |
133 | if (!group) return; |
134 | ||
0657bf9c BM |
135 | if (group->meth->group_clear_finish != 0) |
136 | group->meth->group_clear_finish(group); | |
137 | else if (group->meth != NULL && group->meth->group_finish != 0) | |
138 | group->meth->group_finish(group); | |
df9cc153 BM |
139 | |
140 | EC_GROUP_clear_free_extra_data(group); | |
141 | ||
b6db386f BM |
142 | if (group->generator != NULL) |
143 | EC_POINT_clear_free(group->generator); | |
144 | BN_clear_free(&group->order); | |
145 | BN_clear_free(&group->cofactor); | |
146 | ||
c4b36ff4 | 147 | memset(group, 0, sizeof *group); |
0657bf9c BM |
148 | OPENSSL_free(group); |
149 | } | |
150 | ||
151 | ||
152 | int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) | |
153 | { | |
154 | if (dest->meth->group_copy == 0) | |
155 | { | |
156 | ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
157 | return 0; | |
158 | } | |
159 | if (dest->meth != src->meth) | |
160 | { | |
161 | ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
162 | return 0; | |
163 | } | |
1d5bd6cf BM |
164 | if (dest == src) |
165 | return 1; | |
0657bf9c | 166 | |
df9cc153 BM |
167 | EC_GROUP_clear_free_extra_data(dest); |
168 | if (src->extra_data_dup_func) | |
169 | { | |
170 | if (src->extra_data != NULL) | |
171 | { | |
172 | dest->extra_data = src->extra_data_dup_func(src->extra_data); | |
173 | if (dest->extra_data == NULL) | |
174 | return 0; | |
175 | } | |
176 | ||
177 | dest->extra_data_dup_func = src->extra_data_dup_func; | |
178 | dest->extra_data_free_func = src->extra_data_free_func; | |
179 | dest->extra_data_clear_free_func = src->extra_data_clear_free_func; | |
180 | } | |
181 | ||
b6db386f BM |
182 | if (src->generator != NULL) |
183 | { | |
184 | if (dest->generator == NULL) | |
185 | { | |
186 | dest->generator = EC_POINT_new(dest); | |
187 | if (dest->generator == NULL) return 0; | |
188 | } | |
189 | if (!EC_POINT_copy(dest->generator, src->generator)) return 0; | |
190 | } | |
191 | else | |
192 | { | |
193 | /* src->generator == NULL */ | |
194 | if (dest->generator != NULL) | |
195 | { | |
196 | EC_POINT_clear_free(dest->generator); | |
197 | dest->generator = NULL; | |
198 | } | |
199 | } | |
200 | ||
201 | if (!BN_copy(&dest->order, &src->order)) return 0; | |
202 | if (!BN_copy(&dest->cofactor, &src->cofactor)) return 0; | |
203 | ||
204 | dest->nid = src->nid; | |
205 | ||
0657bf9c BM |
206 | return dest->meth->group_copy(dest, src); |
207 | } | |
208 | ||
209 | ||
48fe4d62 BM |
210 | const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) |
211 | { | |
212 | return group->meth; | |
213 | } | |
214 | ||
215 | ||
b6db386f | 216 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) |
bb62a8b0 | 217 | { |
b6db386f | 218 | if (generator == NULL) |
bb62a8b0 | 219 | { |
b6db386f BM |
220 | ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); |
221 | return 0 ; | |
bb62a8b0 | 222 | } |
b6db386f BM |
223 | |
224 | if (group->generator == NULL) | |
225 | { | |
226 | group->generator = EC_POINT_new(group); | |
227 | if (group->generator == NULL) return 0; | |
228 | } | |
229 | if (!EC_POINT_copy(group->generator, generator)) return 0; | |
230 | ||
231 | if (order != NULL) | |
232 | { if (!BN_copy(&group->order, order)) return 0; } | |
233 | else | |
234 | { if (!BN_zero(&group->order)) return 0; } | |
235 | ||
236 | if (cofactor != NULL) | |
237 | { if (!BN_copy(&group->cofactor, cofactor)) return 0; } | |
238 | else | |
239 | { if (!BN_zero(&group->cofactor)) return 0; } | |
240 | ||
241 | return 1; | |
bb62a8b0 BM |
242 | } |
243 | ||
244 | ||
b6db386f | 245 | EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) |
bb62a8b0 | 246 | { |
b6db386f | 247 | return group->generator; |
bb62a8b0 BM |
248 | } |
249 | ||
250 | ||
b6db386f | 251 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) |
0657bf9c | 252 | { |
b6db386f | 253 | if (!BN_copy(order, &group->order)) |
0657bf9c | 254 | return 0; |
b6db386f BM |
255 | |
256 | return !BN_is_zero(order); | |
0657bf9c BM |
257 | } |
258 | ||
259 | ||
b6db386f | 260 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) |
48fe4d62 | 261 | { |
b6db386f | 262 | if (!BN_copy(cofactor, &group->cofactor)) |
48fe4d62 | 263 | return 0; |
b6db386f BM |
264 | |
265 | return !BN_is_zero(&group->cofactor); | |
48fe4d62 BM |
266 | } |
267 | ||
268 | ||
b6db386f BM |
269 | void EC_GROUP_set_nid(EC_GROUP *group, int nid) |
270 | { | |
271 | group->nid = nid; | |
272 | } | |
273 | ||
274 | ||
275 | int EC_GROUP_get_nid(const EC_GROUP *group) | |
276 | { | |
277 | return group->nid; | |
278 | } | |
279 | ||
280 | ||
281 | int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) | |
48fe4d62 | 282 | { |
b6db386f | 283 | if (group->meth->group_set_curve_GFp == 0) |
48fe4d62 | 284 | { |
b6db386f | 285 | ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
286 | return 0; |
287 | } | |
b6db386f | 288 | return group->meth->group_set_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
289 | } |
290 | ||
291 | ||
b6db386f | 292 | int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 293 | { |
b6db386f | 294 | if (group->meth->group_get_curve_GFp == 0) |
48fe4d62 | 295 | { |
b6db386f | 296 | ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
297 | return 0; |
298 | } | |
b6db386f | 299 | return group->meth->group_get_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
300 | } |
301 | ||
302 | ||
17d6bb81 | 303 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) |
af28dd6c | 304 | { |
17d6bb81 | 305 | if (group->meth->group_check_discriminant == 0) |
af28dd6c | 306 | { |
17d6bb81 | 307 | ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
af28dd6c BM |
308 | return 0; |
309 | } | |
17d6bb81 | 310 | return group->meth->group_check_discriminant(group, ctx); |
af28dd6c BM |
311 | } |
312 | ||
313 | ||
df9cc153 BM |
314 | /* this has 'package' visibility */ |
315 | int EC_GROUP_set_extra_data(EC_GROUP *group, void *extra_data, void *(*extra_data_dup_func)(void *), | |
316 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) | |
317 | { | |
318 | if ((group->extra_data != NULL) | |
319 | || (group->extra_data_dup_func != 0) | |
320 | || (group->extra_data_free_func != 0) | |
321 | || (group->extra_data_clear_free_func != 0)) | |
322 | { | |
323 | ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL); | |
324 | return 0; | |
325 | } | |
326 | ||
327 | group->extra_data = extra_data; | |
328 | group->extra_data_dup_func = extra_data_dup_func; | |
329 | group->extra_data_free_func = extra_data_free_func; | |
330 | group->extra_data_clear_free_func = extra_data_clear_free_func; | |
331 | return 1; | |
332 | } | |
333 | ||
334 | ||
335 | /* this has 'package' visibility */ | |
48fe4d62 | 336 | void *EC_GROUP_get_extra_data(const EC_GROUP *group, void *(*extra_data_dup_func)(void *), |
df9cc153 BM |
337 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) |
338 | { | |
339 | if ((group->extra_data_dup_func != extra_data_dup_func) | |
340 | || (group->extra_data_free_func != extra_data_free_func) | |
341 | || (group->extra_data_clear_free_func != extra_data_clear_free_func)) | |
342 | { | |
343 | ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA, EC_R_NO_SUCH_EXTRA_DATA); | |
344 | return NULL; | |
345 | } | |
346 | ||
347 | return group->extra_data; | |
348 | } | |
349 | ||
350 | ||
351 | /* this has 'package' visibility */ | |
352 | void EC_GROUP_free_extra_data(EC_GROUP *group) | |
353 | { | |
354 | if (group->extra_data_free_func) | |
355 | group->extra_data_free_func(group->extra_data); | |
356 | group->extra_data = NULL; | |
357 | group->extra_data_dup_func = 0; | |
358 | group->extra_data_free_func = 0; | |
359 | group->extra_data_clear_free_func = 0; | |
360 | } | |
361 | ||
362 | ||
363 | /* this has 'package' visibility */ | |
364 | void EC_GROUP_clear_free_extra_data(EC_GROUP *group) | |
365 | { | |
366 | if (group->extra_data_clear_free_func) | |
367 | group->extra_data_clear_free_func(group->extra_data); | |
368 | else if (group->extra_data_free_func) | |
369 | group->extra_data_free_func(group->extra_data); | |
370 | 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 | ||
0657bf9c BM |
376 | |
377 | /* functions for EC_POINT objects */ | |
378 | ||
379 | EC_POINT *EC_POINT_new(const EC_GROUP *group) | |
380 | { | |
381 | EC_POINT *ret; | |
382 | ||
383 | if (group == NULL) | |
384 | { | |
385 | ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
386 | return NULL; | |
387 | } | |
388 | if (group->meth->point_init == 0) | |
389 | { | |
390 | ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
391 | return NULL; | |
392 | } | |
393 | ||
394 | ret = OPENSSL_malloc(sizeof *ret); | |
395 | if (ret == NULL) | |
396 | { | |
397 | ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | ret->meth = group->meth; | |
402 | ||
403 | if (!ret->meth->point_init(ret)) | |
404 | { | |
405 | OPENSSL_free(ret); | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
412 | ||
413 | void EC_POINT_free(EC_POINT *point) | |
414 | { | |
7711de24 BM |
415 | if (!point) return; |
416 | ||
0657bf9c BM |
417 | if (point->meth->point_finish != 0) |
418 | point->meth->point_finish(point); | |
419 | OPENSSL_free(point); | |
420 | } | |
421 | ||
422 | ||
423 | void EC_POINT_clear_free(EC_POINT *point) | |
424 | { | |
7711de24 BM |
425 | if (!point) return; |
426 | ||
0657bf9c BM |
427 | if (point->meth->point_clear_finish != 0) |
428 | point->meth->point_clear_finish(point); | |
429 | else if (point->meth != NULL && point->meth->point_finish != 0) | |
430 | point->meth->point_finish(point); | |
f418f8c1 | 431 | memset(point, 0, sizeof *point); |
0657bf9c BM |
432 | OPENSSL_free(point); |
433 | } | |
434 | ||
435 | ||
436 | int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) | |
437 | { | |
438 | if (dest->meth->point_copy == 0) | |
439 | { | |
440 | ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
441 | return 0; | |
442 | } | |
443 | if (dest->meth != src->meth) | |
444 | { | |
445 | ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
446 | return 0; | |
447 | } | |
91f29a38 BM |
448 | if (dest == src) |
449 | return 1; | |
0657bf9c BM |
450 | return dest->meth->point_copy(dest, src); |
451 | } | |
452 | ||
453 | ||
48fe4d62 BM |
454 | const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) |
455 | { | |
456 | return point->meth; | |
457 | } | |
458 | ||
459 | ||
226cc7de BM |
460 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) |
461 | { | |
462 | if (group->meth->point_set_to_infinity == 0) | |
463 | { | |
464 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
465 | return 0; | |
466 | } | |
467 | if (group->meth != point->meth) | |
468 | { | |
469 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
470 | return 0; | |
471 | } | |
472 | return group->meth->point_set_to_infinity(group, point); | |
473 | } | |
474 | ||
475 | ||
1d5bd6cf BM |
476 | int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
477 | const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx) | |
478 | { | |
479 | if (group->meth->point_set_Jprojective_coordinates_GFp == 0) | |
480 | { | |
481 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
482 | return 0; | |
483 | } | |
484 | if (group->meth != point->meth) | |
485 | { | |
486 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
487 | return 0; | |
488 | } | |
489 | return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
490 | } | |
491 | ||
492 | ||
493 | int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
494 | BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx) | |
495 | { | |
496 | if (group->meth->point_get_Jprojective_coordinates_GFp == 0) | |
497 | { | |
498 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
499 | return 0; | |
500 | } | |
501 | if (group->meth != point->meth) | |
502 | { | |
503 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
504 | return 0; | |
505 | } | |
506 | return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
507 | } | |
508 | ||
509 | ||
226cc7de BM |
510 | int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
511 | const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) | |
512 | { | |
513 | if (group->meth->point_set_affine_coordinates_GFp == 0) | |
514 | { | |
515 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
516 | return 0; | |
517 | } | |
518 | if (group->meth != point->meth) | |
519 | { | |
520 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
521 | return 0; | |
522 | } | |
523 | return group->meth->point_set_affine_coordinates_GFp(group, point, x, y, ctx); | |
524 | } | |
525 | ||
526 | ||
527 | int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
528 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx) | |
529 | { | |
530 | if (group->meth->point_get_affine_coordinates_GFp == 0) | |
531 | { | |
532 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
533 | return 0; | |
534 | } | |
535 | if (group->meth != point->meth) | |
536 | { | |
537 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
538 | return 0; | |
539 | } | |
540 | return group->meth->point_get_affine_coordinates_GFp(group, point, x, y, ctx); | |
541 | } | |
542 | ||
543 | ||
1d5bd6cf BM |
544 | int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
545 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
546 | { | |
547 | if (group->meth->point_set_compressed_coordinates_GFp == 0) | |
548 | { | |
549 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
550 | return 0; | |
551 | } | |
552 | if (group->meth != point->meth) | |
553 | { | |
554 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
555 | return 0; | |
556 | } | |
557 | return group->meth->point_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx); | |
558 | } | |
0657bf9c BM |
559 | |
560 | ||
561 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, | |
562 | unsigned char *buf, size_t len, BN_CTX *ctx) | |
563 | { | |
564 | if (group->meth->point2oct == 0) | |
565 | { | |
566 | ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
567 | return 0; | |
568 | } | |
569 | if (group->meth != point->meth) | |
570 | { | |
571 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); | |
572 | return 0; | |
573 | } | |
574 | return group->meth->point2oct(group, point, form, buf, len, ctx); | |
575 | } | |
576 | ||
577 | ||
578 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, | |
579 | const unsigned char *buf, size_t len, BN_CTX *ctx) | |
580 | { | |
581 | if (group->meth->oct2point == 0) | |
582 | { | |
583 | ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
584 | return 0; | |
585 | } | |
586 | if (group->meth != point->meth) | |
587 | { | |
588 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); | |
589 | return 0; | |
590 | } | |
591 | return group->meth->oct2point(group, point, buf, len, ctx); | |
592 | } | |
593 | ||
594 | ||
595 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) | |
596 | { | |
597 | if (group->meth->add == 0) | |
598 | { | |
599 | ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
600 | return 0; | |
601 | } | |
602 | if ((group->meth != r->meth) || (r->meth != a->meth) || (a->meth != b->meth)) | |
603 | { | |
604 | ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); | |
605 | return 0; | |
606 | } | |
607 | return group->meth->add(group, r, a, b, ctx); | |
608 | } | |
609 | ||
610 | ||
611 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx) | |
612 | { | |
613 | if (group->meth->dbl == 0) | |
614 | { | |
615 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
616 | return 0; | |
617 | } | |
618 | if ((group->meth != r->meth) || (r->meth != a->meth)) | |
619 | { | |
620 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
621 | return 0; | |
622 | } | |
623 | return group->meth->dbl(group, r, a, ctx); | |
624 | } | |
625 | ||
626 | ||
1d5bd6cf BM |
627 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) |
628 | { | |
629 | if (group->meth->dbl == 0) | |
630 | { | |
631 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
632 | return 0; | |
633 | } | |
634 | if (group->meth != a->meth) | |
635 | { | |
636 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
637 | return 0; | |
638 | } | |
639 | return group->meth->invert(group, a, ctx); | |
640 | } | |
641 | ||
642 | ||
0657bf9c BM |
643 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) |
644 | { | |
645 | if (group->meth->is_at_infinity == 0) | |
646 | { | |
647 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
648 | return 0; | |
649 | } | |
650 | if (group->meth != point->meth) | |
651 | { | |
652 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
653 | return 0; | |
654 | } | |
655 | return group->meth->is_at_infinity(group, point); | |
656 | } | |
657 | ||
658 | ||
659 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx) | |
660 | { | |
661 | if (group->meth->is_on_curve == 0) | |
662 | { | |
663 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
664 | return 0; | |
665 | } | |
666 | if (group->meth != point->meth) | |
667 | { | |
668 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); | |
669 | return 0; | |
670 | } | |
671 | return group->meth->is_on_curve(group, point, ctx); | |
672 | } | |
673 | ||
674 | ||
1d5bd6cf BM |
675 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) |
676 | { | |
677 | if (group->meth->point_cmp == 0) | |
678 | { | |
679 | ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
680 | return 0; | |
681 | } | |
682 | if ((group->meth != a->meth) || (a->meth != b->meth)) | |
683 | { | |
684 | ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); | |
685 | return 0; | |
686 | } | |
687 | return group->meth->point_cmp(group, a, b, ctx); | |
688 | } | |
689 | ||
690 | ||
e869d4bd | 691 | int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) |
0657bf9c BM |
692 | { |
693 | if (group->meth->make_affine == 0) | |
694 | { | |
695 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
696 | return 0; | |
697 | } | |
698 | if (group->meth != point->meth) | |
699 | { | |
700 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
701 | return 0; | |
702 | } | |
703 | return group->meth->make_affine(group, point, ctx); | |
704 | } | |
48fe4d62 BM |
705 | |
706 | ||
707 | int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx) | |
708 | { | |
709 | size_t i; | |
710 | ||
711 | if (group->meth->points_make_affine == 0) | |
712 | { | |
713 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
714 | return 0; | |
715 | } | |
716 | for (i = 0; i < num; i++) | |
717 | { | |
718 | if (group->meth != points[i]->meth) | |
719 | { | |
720 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
721 | return 0; | |
722 | } | |
723 | } | |
724 | return group->meth->points_make_affine(group, num, points, ctx); | |
725 | } |