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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 | { | |
115 | if (group->meth->group_finish != 0) | |
116 | group->meth->group_finish(group); | |
df9cc153 BM |
117 | |
118 | EC_GROUP_free_extra_data(group); | |
119 | ||
b6db386f BM |
120 | if (group->generator != NULL) |
121 | EC_POINT_free(group->generator); | |
122 | BN_free(&group->order); | |
123 | BN_free(&group->cofactor); | |
124 | ||
0657bf9c BM |
125 | OPENSSL_free(group); |
126 | } | |
127 | ||
128 | ||
129 | void EC_GROUP_clear_free(EC_GROUP *group) | |
130 | { | |
131 | if (group->meth->group_clear_finish != 0) | |
132 | group->meth->group_clear_finish(group); | |
133 | else if (group->meth != NULL && group->meth->group_finish != 0) | |
134 | group->meth->group_finish(group); | |
df9cc153 BM |
135 | |
136 | EC_GROUP_clear_free_extra_data(group); | |
137 | ||
b6db386f BM |
138 | if (group->generator != NULL) |
139 | EC_POINT_clear_free(group->generator); | |
140 | BN_clear_free(&group->order); | |
141 | BN_clear_free(&group->cofactor); | |
142 | ||
c4b36ff4 | 143 | memset(group, 0, sizeof *group); |
0657bf9c BM |
144 | OPENSSL_free(group); |
145 | } | |
146 | ||
147 | ||
148 | int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) | |
149 | { | |
150 | if (dest->meth->group_copy == 0) | |
151 | { | |
152 | ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
153 | return 0; | |
154 | } | |
155 | if (dest->meth != src->meth) | |
156 | { | |
157 | ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
158 | return 0; | |
159 | } | |
1d5bd6cf BM |
160 | if (dest == src) |
161 | return 1; | |
0657bf9c | 162 | |
df9cc153 BM |
163 | EC_GROUP_clear_free_extra_data(dest); |
164 | if (src->extra_data_dup_func) | |
165 | { | |
166 | if (src->extra_data != NULL) | |
167 | { | |
168 | dest->extra_data = src->extra_data_dup_func(src->extra_data); | |
169 | if (dest->extra_data == NULL) | |
170 | return 0; | |
171 | } | |
172 | ||
173 | dest->extra_data_dup_func = src->extra_data_dup_func; | |
174 | dest->extra_data_free_func = src->extra_data_free_func; | |
175 | dest->extra_data_clear_free_func = src->extra_data_clear_free_func; | |
176 | } | |
177 | ||
b6db386f BM |
178 | if (src->generator != NULL) |
179 | { | |
180 | if (dest->generator == NULL) | |
181 | { | |
182 | dest->generator = EC_POINT_new(dest); | |
183 | if (dest->generator == NULL) return 0; | |
184 | } | |
185 | if (!EC_POINT_copy(dest->generator, src->generator)) return 0; | |
186 | } | |
187 | else | |
188 | { | |
189 | /* src->generator == NULL */ | |
190 | if (dest->generator != NULL) | |
191 | { | |
192 | EC_POINT_clear_free(dest->generator); | |
193 | dest->generator = NULL; | |
194 | } | |
195 | } | |
196 | ||
197 | if (!BN_copy(&dest->order, &src->order)) return 0; | |
198 | if (!BN_copy(&dest->cofactor, &src->cofactor)) return 0; | |
199 | ||
200 | dest->nid = src->nid; | |
201 | ||
0657bf9c BM |
202 | return dest->meth->group_copy(dest, src); |
203 | } | |
204 | ||
205 | ||
48fe4d62 BM |
206 | const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) |
207 | { | |
208 | return group->meth; | |
209 | } | |
210 | ||
211 | ||
b6db386f | 212 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) |
bb62a8b0 | 213 | { |
b6db386f | 214 | if (generator == NULL) |
bb62a8b0 | 215 | { |
b6db386f BM |
216 | ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); |
217 | return 0 ; | |
bb62a8b0 | 218 | } |
b6db386f BM |
219 | |
220 | if (group->generator == NULL) | |
221 | { | |
222 | group->generator = EC_POINT_new(group); | |
223 | if (group->generator == NULL) return 0; | |
224 | } | |
225 | if (!EC_POINT_copy(group->generator, generator)) return 0; | |
226 | ||
227 | if (order != NULL) | |
228 | { if (!BN_copy(&group->order, order)) return 0; } | |
229 | else | |
230 | { if (!BN_zero(&group->order)) return 0; } | |
231 | ||
232 | if (cofactor != NULL) | |
233 | { if (!BN_copy(&group->cofactor, cofactor)) return 0; } | |
234 | else | |
235 | { if (!BN_zero(&group->cofactor)) return 0; } | |
236 | ||
237 | return 1; | |
bb62a8b0 BM |
238 | } |
239 | ||
240 | ||
b6db386f | 241 | EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) |
bb62a8b0 | 242 | { |
b6db386f | 243 | return group->generator; |
bb62a8b0 BM |
244 | } |
245 | ||
246 | ||
b6db386f | 247 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) |
0657bf9c | 248 | { |
b6db386f | 249 | if (!BN_copy(order, &group->order)) |
0657bf9c | 250 | return 0; |
b6db386f BM |
251 | |
252 | return !BN_is_zero(order); | |
0657bf9c BM |
253 | } |
254 | ||
255 | ||
b6db386f | 256 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) |
48fe4d62 | 257 | { |
b6db386f | 258 | if (!BN_copy(cofactor, &group->cofactor)) |
48fe4d62 | 259 | return 0; |
b6db386f BM |
260 | |
261 | return !BN_is_zero(&group->cofactor); | |
48fe4d62 BM |
262 | } |
263 | ||
264 | ||
b6db386f BM |
265 | void EC_GROUP_set_nid(EC_GROUP *group, int nid) |
266 | { | |
267 | group->nid = nid; | |
268 | } | |
269 | ||
270 | ||
271 | int EC_GROUP_get_nid(const EC_GROUP *group) | |
272 | { | |
273 | return group->nid; | |
274 | } | |
275 | ||
276 | ||
277 | int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) | |
48fe4d62 | 278 | { |
b6db386f | 279 | if (group->meth->group_set_curve_GFp == 0) |
48fe4d62 | 280 | { |
b6db386f | 281 | ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
282 | return 0; |
283 | } | |
b6db386f | 284 | return group->meth->group_set_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
285 | } |
286 | ||
287 | ||
b6db386f | 288 | int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) |
48fe4d62 | 289 | { |
b6db386f | 290 | if (group->meth->group_get_curve_GFp == 0) |
48fe4d62 | 291 | { |
b6db386f | 292 | ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
48fe4d62 BM |
293 | return 0; |
294 | } | |
b6db386f | 295 | return group->meth->group_get_curve_GFp(group, p, a, b, ctx); |
48fe4d62 BM |
296 | } |
297 | ||
298 | ||
17d6bb81 | 299 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) |
af28dd6c | 300 | { |
17d6bb81 | 301 | if (group->meth->group_check_discriminant == 0) |
af28dd6c | 302 | { |
17d6bb81 | 303 | ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
af28dd6c BM |
304 | return 0; |
305 | } | |
17d6bb81 | 306 | return group->meth->group_check_discriminant(group, ctx); |
af28dd6c BM |
307 | } |
308 | ||
309 | ||
df9cc153 BM |
310 | /* this has 'package' visibility */ |
311 | int EC_GROUP_set_extra_data(EC_GROUP *group, void *extra_data, void *(*extra_data_dup_func)(void *), | |
312 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) | |
313 | { | |
314 | if ((group->extra_data != NULL) | |
315 | || (group->extra_data_dup_func != 0) | |
316 | || (group->extra_data_free_func != 0) | |
317 | || (group->extra_data_clear_free_func != 0)) | |
318 | { | |
319 | ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL); | |
320 | return 0; | |
321 | } | |
322 | ||
323 | group->extra_data = extra_data; | |
324 | group->extra_data_dup_func = extra_data_dup_func; | |
325 | group->extra_data_free_func = extra_data_free_func; | |
326 | group->extra_data_clear_free_func = extra_data_clear_free_func; | |
327 | return 1; | |
328 | } | |
329 | ||
330 | ||
331 | /* this has 'package' visibility */ | |
48fe4d62 | 332 | void *EC_GROUP_get_extra_data(const EC_GROUP *group, void *(*extra_data_dup_func)(void *), |
df9cc153 BM |
333 | void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) |
334 | { | |
335 | if ((group->extra_data_dup_func != extra_data_dup_func) | |
336 | || (group->extra_data_free_func != extra_data_free_func) | |
337 | || (group->extra_data_clear_free_func != extra_data_clear_free_func)) | |
338 | { | |
339 | ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA, EC_R_NO_SUCH_EXTRA_DATA); | |
340 | return NULL; | |
341 | } | |
342 | ||
343 | return group->extra_data; | |
344 | } | |
345 | ||
346 | ||
347 | /* this has 'package' visibility */ | |
348 | void EC_GROUP_free_extra_data(EC_GROUP *group) | |
349 | { | |
350 | if (group->extra_data_free_func) | |
351 | group->extra_data_free_func(group->extra_data); | |
352 | group->extra_data = NULL; | |
353 | group->extra_data_dup_func = 0; | |
354 | group->extra_data_free_func = 0; | |
355 | group->extra_data_clear_free_func = 0; | |
356 | } | |
357 | ||
358 | ||
359 | /* this has 'package' visibility */ | |
360 | void EC_GROUP_clear_free_extra_data(EC_GROUP *group) | |
361 | { | |
362 | if (group->extra_data_clear_free_func) | |
363 | group->extra_data_clear_free_func(group->extra_data); | |
364 | else if (group->extra_data_free_func) | |
365 | group->extra_data_free_func(group->extra_data); | |
366 | group->extra_data = NULL; | |
367 | group->extra_data_dup_func = 0; | |
368 | group->extra_data_free_func = 0; | |
369 | group->extra_data_clear_free_func = 0; | |
370 | } | |
371 | ||
0657bf9c BM |
372 | |
373 | /* functions for EC_POINT objects */ | |
374 | ||
375 | EC_POINT *EC_POINT_new(const EC_GROUP *group) | |
376 | { | |
377 | EC_POINT *ret; | |
378 | ||
379 | if (group == NULL) | |
380 | { | |
381 | ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
382 | return NULL; | |
383 | } | |
384 | if (group->meth->point_init == 0) | |
385 | { | |
386 | ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
387 | return NULL; | |
388 | } | |
389 | ||
390 | ret = OPENSSL_malloc(sizeof *ret); | |
391 | if (ret == NULL) | |
392 | { | |
393 | ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); | |
394 | return NULL; | |
395 | } | |
396 | ||
397 | ret->meth = group->meth; | |
398 | ||
399 | if (!ret->meth->point_init(ret)) | |
400 | { | |
401 | OPENSSL_free(ret); | |
402 | return NULL; | |
403 | } | |
404 | ||
405 | return ret; | |
406 | } | |
407 | ||
408 | ||
409 | void EC_POINT_free(EC_POINT *point) | |
410 | { | |
411 | if (point->meth->point_finish != 0) | |
412 | point->meth->point_finish(point); | |
413 | OPENSSL_free(point); | |
414 | } | |
415 | ||
416 | ||
417 | void EC_POINT_clear_free(EC_POINT *point) | |
418 | { | |
419 | if (point->meth->point_clear_finish != 0) | |
420 | point->meth->point_clear_finish(point); | |
421 | else if (point->meth != NULL && point->meth->point_finish != 0) | |
422 | point->meth->point_finish(point); | |
f418f8c1 | 423 | memset(point, 0, sizeof *point); |
0657bf9c BM |
424 | OPENSSL_free(point); |
425 | } | |
426 | ||
427 | ||
428 | int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) | |
429 | { | |
430 | if (dest->meth->point_copy == 0) | |
431 | { | |
432 | ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
433 | return 0; | |
434 | } | |
435 | if (dest->meth != src->meth) | |
436 | { | |
437 | ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
438 | return 0; | |
439 | } | |
91f29a38 BM |
440 | if (dest == src) |
441 | return 1; | |
0657bf9c BM |
442 | return dest->meth->point_copy(dest, src); |
443 | } | |
444 | ||
445 | ||
48fe4d62 BM |
446 | const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) |
447 | { | |
448 | return point->meth; | |
449 | } | |
450 | ||
451 | ||
226cc7de BM |
452 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) |
453 | { | |
454 | if (group->meth->point_set_to_infinity == 0) | |
455 | { | |
456 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
457 | return 0; | |
458 | } | |
459 | if (group->meth != point->meth) | |
460 | { | |
461 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
462 | return 0; | |
463 | } | |
464 | return group->meth->point_set_to_infinity(group, point); | |
465 | } | |
466 | ||
467 | ||
1d5bd6cf BM |
468 | int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
469 | const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx) | |
470 | { | |
471 | if (group->meth->point_set_Jprojective_coordinates_GFp == 0) | |
472 | { | |
473 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
474 | return 0; | |
475 | } | |
476 | if (group->meth != point->meth) | |
477 | { | |
478 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
479 | return 0; | |
480 | } | |
481 | return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
482 | } | |
483 | ||
484 | ||
485 | int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
486 | BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx) | |
487 | { | |
488 | if (group->meth->point_get_Jprojective_coordinates_GFp == 0) | |
489 | { | |
490 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
491 | return 0; | |
492 | } | |
493 | if (group->meth != point->meth) | |
494 | { | |
495 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
496 | return 0; | |
497 | } | |
498 | return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, y, z, ctx); | |
499 | } | |
500 | ||
501 | ||
226cc7de BM |
502 | int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
503 | const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) | |
504 | { | |
505 | if (group->meth->point_set_affine_coordinates_GFp == 0) | |
506 | { | |
507 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
508 | return 0; | |
509 | } | |
510 | if (group->meth != point->meth) | |
511 | { | |
512 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
513 | return 0; | |
514 | } | |
515 | return group->meth->point_set_affine_coordinates_GFp(group, point, x, y, ctx); | |
516 | } | |
517 | ||
518 | ||
519 | int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point, | |
520 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx) | |
521 | { | |
522 | if (group->meth->point_get_affine_coordinates_GFp == 0) | |
523 | { | |
524 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
525 | return 0; | |
526 | } | |
527 | if (group->meth != point->meth) | |
528 | { | |
529 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
530 | return 0; | |
531 | } | |
532 | return group->meth->point_get_affine_coordinates_GFp(group, point, x, y, ctx); | |
533 | } | |
534 | ||
535 | ||
1d5bd6cf BM |
536 | int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, |
537 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
538 | { | |
539 | if (group->meth->point_set_compressed_coordinates_GFp == 0) | |
540 | { | |
541 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
542 | return 0; | |
543 | } | |
544 | if (group->meth != point->meth) | |
545 | { | |
546 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
547 | return 0; | |
548 | } | |
549 | return group->meth->point_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx); | |
550 | } | |
0657bf9c BM |
551 | |
552 | ||
553 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, | |
554 | unsigned char *buf, size_t len, BN_CTX *ctx) | |
555 | { | |
556 | if (group->meth->point2oct == 0) | |
557 | { | |
558 | ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
559 | return 0; | |
560 | } | |
561 | if (group->meth != point->meth) | |
562 | { | |
563 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); | |
564 | return 0; | |
565 | } | |
566 | return group->meth->point2oct(group, point, form, buf, len, ctx); | |
567 | } | |
568 | ||
569 | ||
570 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, | |
571 | const unsigned char *buf, size_t len, BN_CTX *ctx) | |
572 | { | |
573 | if (group->meth->oct2point == 0) | |
574 | { | |
575 | ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
576 | return 0; | |
577 | } | |
578 | if (group->meth != point->meth) | |
579 | { | |
580 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); | |
581 | return 0; | |
582 | } | |
583 | return group->meth->oct2point(group, point, buf, len, ctx); | |
584 | } | |
585 | ||
586 | ||
587 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) | |
588 | { | |
589 | if (group->meth->add == 0) | |
590 | { | |
591 | ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
592 | return 0; | |
593 | } | |
594 | if ((group->meth != r->meth) || (r->meth != a->meth) || (a->meth != b->meth)) | |
595 | { | |
596 | ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); | |
597 | return 0; | |
598 | } | |
599 | return group->meth->add(group, r, a, b, ctx); | |
600 | } | |
601 | ||
602 | ||
603 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx) | |
604 | { | |
605 | if (group->meth->dbl == 0) | |
606 | { | |
607 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
608 | return 0; | |
609 | } | |
610 | if ((group->meth != r->meth) || (r->meth != a->meth)) | |
611 | { | |
612 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
613 | return 0; | |
614 | } | |
615 | return group->meth->dbl(group, r, a, ctx); | |
616 | } | |
617 | ||
618 | ||
1d5bd6cf BM |
619 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) |
620 | { | |
621 | if (group->meth->dbl == 0) | |
622 | { | |
623 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
624 | return 0; | |
625 | } | |
626 | if (group->meth != a->meth) | |
627 | { | |
628 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
629 | return 0; | |
630 | } | |
631 | return group->meth->invert(group, a, ctx); | |
632 | } | |
633 | ||
634 | ||
0657bf9c BM |
635 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) |
636 | { | |
637 | if (group->meth->is_at_infinity == 0) | |
638 | { | |
639 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
640 | return 0; | |
641 | } | |
642 | if (group->meth != point->meth) | |
643 | { | |
644 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
645 | return 0; | |
646 | } | |
647 | return group->meth->is_at_infinity(group, point); | |
648 | } | |
649 | ||
650 | ||
651 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx) | |
652 | { | |
653 | if (group->meth->is_on_curve == 0) | |
654 | { | |
655 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
656 | return 0; | |
657 | } | |
658 | if (group->meth != point->meth) | |
659 | { | |
660 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); | |
661 | return 0; | |
662 | } | |
663 | return group->meth->is_on_curve(group, point, ctx); | |
664 | } | |
665 | ||
666 | ||
1d5bd6cf BM |
667 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx) |
668 | { | |
669 | if (group->meth->point_cmp == 0) | |
670 | { | |
671 | ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
672 | return 0; | |
673 | } | |
674 | if ((group->meth != a->meth) || (a->meth != b->meth)) | |
675 | { | |
676 | ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); | |
677 | return 0; | |
678 | } | |
679 | return group->meth->point_cmp(group, a, b, ctx); | |
680 | } | |
681 | ||
682 | ||
e869d4bd | 683 | int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) |
0657bf9c BM |
684 | { |
685 | if (group->meth->make_affine == 0) | |
686 | { | |
687 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
688 | return 0; | |
689 | } | |
690 | if (group->meth != point->meth) | |
691 | { | |
692 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
693 | return 0; | |
694 | } | |
695 | return group->meth->make_affine(group, point, ctx); | |
696 | } | |
48fe4d62 BM |
697 | |
698 | ||
699 | int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx) | |
700 | { | |
701 | size_t i; | |
702 | ||
703 | if (group->meth->points_make_affine == 0) | |
704 | { | |
705 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
706 | return 0; | |
707 | } | |
708 | for (i = 0; i < num; i++) | |
709 | { | |
710 | if (group->meth != points[i]->meth) | |
711 | { | |
712 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
713 | return 0; | |
714 | } | |
715 | } | |
716 | return group->meth->points_make_affine(group, num, points, ctx); | |
717 | } |