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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 | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
65e81670 BM |
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. | |
0f113f3e | 60 | * Binary polynomial ECC support in OpenSSL originally developed by |
7793f30e BM |
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 | |
0657bf9c BM |
71 | /* functions for EC_GROUP objects */ |
72 | ||
73 | EC_GROUP *EC_GROUP_new(const EC_METHOD *meth) | |
0f113f3e MC |
74 | { |
75 | EC_GROUP *ret; | |
76 | ||
77 | if (meth == NULL) { | |
78 | ECerr(EC_F_EC_GROUP_NEW, EC_R_SLOT_FULL); | |
79 | return NULL; | |
80 | } | |
81 | if (meth->group_init == 0) { | |
82 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
83 | return NULL; | |
84 | } | |
85 | ||
64b25758 | 86 | ret = OPENSSL_zalloc(sizeof(*ret)); |
0f113f3e MC |
87 | if (ret == NULL) { |
88 | ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); | |
89 | return NULL; | |
90 | } | |
91 | ||
92 | ret->meth = meth; | |
0f113f3e | 93 | ret->order = BN_new(); |
90945fa3 | 94 | if (ret->order == NULL) |
0f113f3e MC |
95 | goto err; |
96 | ret->cofactor = BN_new(); | |
90945fa3 | 97 | if (ret->cofactor == NULL) |
0f113f3e | 98 | goto err; |
86f300d3 | 99 | ret->asn1_flag = OPENSSL_EC_NAMED_CURVE; |
0f113f3e | 100 | ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED; |
0f113f3e MC |
101 | if (!meth->group_init(ret)) |
102 | goto err; | |
0f113f3e | 103 | return ret; |
64b25758 | 104 | |
0f113f3e | 105 | err: |
23a1d5e9 RS |
106 | BN_free(ret->order); |
107 | BN_free(ret->cofactor); | |
0f113f3e MC |
108 | OPENSSL_free(ret); |
109 | return NULL; | |
110 | } | |
0657bf9c | 111 | |
3aef36ff RS |
112 | static void ec_group_free_precomp(EC_GROUP *group) |
113 | { | |
114 | switch (group->pre_comp_type) { | |
115 | default: | |
116 | break; | |
e69aa800 | 117 | #ifdef ECP_NISTZ256_REFERENCE_IMPLEMENTATION |
3aef36ff RS |
118 | case pct_nistz256: |
119 | EC_nistz256_pre_comp_free(group->pre_comp.nistz256); | |
120 | break; | |
e69aa800 | 121 | #endif |
3aef36ff RS |
122 | #ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 |
123 | case pct_nistp224: | |
124 | EC_nistp224_pre_comp_free(group->pre_comp.nistp224); | |
125 | break; | |
126 | case pct_nistp256: | |
127 | EC_nistp256_pre_comp_free(group->pre_comp.nistp256); | |
128 | break; | |
129 | case pct_nistp521: | |
130 | EC_nistp521_pre_comp_free(group->pre_comp.nistp521); | |
131 | break; | |
132 | #endif | |
133 | case pct_ec: | |
134 | EC_ec_pre_comp_free(group->pre_comp.ec); | |
135 | break; | |
136 | } | |
137 | group->pre_comp.ec = NULL; | |
138 | } | |
139 | ||
0657bf9c | 140 | void EC_GROUP_free(EC_GROUP *group) |
0f113f3e MC |
141 | { |
142 | if (!group) | |
143 | return; | |
7711de24 | 144 | |
0f113f3e MC |
145 | if (group->meth->group_finish != 0) |
146 | group->meth->group_finish(group); | |
df9cc153 | 147 | |
3aef36ff | 148 | ec_group_free_precomp(group); |
23a1d5e9 | 149 | BN_MONT_CTX_free(group->mont_data); |
8fdc3734 | 150 | EC_POINT_free(group->generator); |
0f113f3e MC |
151 | BN_free(group->order); |
152 | BN_free(group->cofactor); | |
25aaa98a | 153 | OPENSSL_free(group->seed); |
0f113f3e MC |
154 | OPENSSL_free(group); |
155 | } | |
0657bf9c BM |
156 | |
157 | void EC_GROUP_clear_free(EC_GROUP *group) | |
0f113f3e MC |
158 | { |
159 | if (!group) | |
160 | return; | |
df9cc153 | 161 | |
0f113f3e MC |
162 | if (group->meth->group_clear_finish != 0) |
163 | group->meth->group_clear_finish(group); | |
164 | else if (group->meth->group_finish != 0) | |
165 | group->meth->group_finish(group); | |
df9cc153 | 166 | |
3aef36ff | 167 | ec_group_free_precomp(group); |
23a1d5e9 | 168 | BN_MONT_CTX_free(group->mont_data); |
8fdc3734 | 169 | EC_POINT_clear_free(group->generator); |
0f113f3e MC |
170 | BN_clear_free(group->order); |
171 | BN_clear_free(group->cofactor); | |
4b45c6e5 | 172 | OPENSSL_clear_free(group->seed, group->seed_len); |
b4faea50 | 173 | OPENSSL_clear_free(group, sizeof(*group)); |
0f113f3e | 174 | } |
0657bf9c BM |
175 | |
176 | int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) | |
0f113f3e | 177 | { |
0f113f3e MC |
178 | if (dest->meth->group_copy == 0) { |
179 | ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
180 | return 0; | |
181 | } | |
182 | if (dest->meth != src->meth) { | |
183 | ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
184 | return 0; | |
185 | } | |
186 | if (dest == src) | |
187 | return 1; | |
188 | ||
3aef36ff RS |
189 | /* Copy precomputed */ |
190 | dest->pre_comp_type = src->pre_comp_type; | |
191 | switch (src->pre_comp_type) { | |
192 | default: | |
193 | dest->pre_comp.ec = NULL; | |
194 | break; | |
e69aa800 | 195 | #ifdef ECP_NISTZ256_REFERENCE_IMPLEMENTATION |
3aef36ff RS |
196 | case pct_nistz256: |
197 | dest->pre_comp.nistz256 = EC_nistz256_pre_comp_dup(src->pre_comp.nistz256); | |
198 | break; | |
e69aa800 | 199 | #endif |
3aef36ff RS |
200 | #ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 |
201 | case pct_nistp224: | |
202 | dest->pre_comp.nistp224 = EC_nistp224_pre_comp_dup(src->pre_comp.nistp224); | |
203 | break; | |
204 | case pct_nistp256: | |
205 | dest->pre_comp.nistp256 = EC_nistp256_pre_comp_dup(src->pre_comp.nistp256); | |
206 | break; | |
207 | case pct_nistp521: | |
208 | dest->pre_comp.nistp521 = EC_nistp521_pre_comp_dup(src->pre_comp.nistp521); | |
209 | break; | |
210 | #endif | |
211 | case pct_ec: | |
212 | dest->pre_comp.ec = EC_ec_pre_comp_dup(src->pre_comp.ec); | |
213 | break; | |
0f113f3e MC |
214 | } |
215 | ||
216 | if (src->mont_data != NULL) { | |
217 | if (dest->mont_data == NULL) { | |
218 | dest->mont_data = BN_MONT_CTX_new(); | |
219 | if (dest->mont_data == NULL) | |
220 | return 0; | |
221 | } | |
222 | if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) | |
223 | return 0; | |
224 | } else { | |
225 | /* src->generator == NULL */ | |
23a1d5e9 RS |
226 | BN_MONT_CTX_free(dest->mont_data); |
227 | dest->mont_data = NULL; | |
0f113f3e | 228 | } |
0657bf9c | 229 | |
0f113f3e MC |
230 | if (src->generator != NULL) { |
231 | if (dest->generator == NULL) { | |
232 | dest->generator = EC_POINT_new(dest); | |
233 | if (dest->generator == NULL) | |
234 | return 0; | |
235 | } | |
236 | if (!EC_POINT_copy(dest->generator, src->generator)) | |
237 | return 0; | |
238 | } else { | |
239 | /* src->generator == NULL */ | |
8fdc3734 RS |
240 | EC_POINT_clear_free(dest->generator); |
241 | dest->generator = NULL; | |
0f113f3e MC |
242 | } |
243 | ||
244 | if (!BN_copy(dest->order, src->order)) | |
245 | return 0; | |
246 | if (!BN_copy(dest->cofactor, src->cofactor)) | |
247 | return 0; | |
248 | ||
249 | dest->curve_name = src->curve_name; | |
250 | dest->asn1_flag = src->asn1_flag; | |
251 | dest->asn1_form = src->asn1_form; | |
252 | ||
253 | if (src->seed) { | |
b548a1f1 | 254 | OPENSSL_free(dest->seed); |
0f113f3e MC |
255 | dest->seed = OPENSSL_malloc(src->seed_len); |
256 | if (dest->seed == NULL) | |
257 | return 0; | |
258 | if (!memcpy(dest->seed, src->seed, src->seed_len)) | |
259 | return 0; | |
260 | dest->seed_len = src->seed_len; | |
261 | } else { | |
b548a1f1 | 262 | OPENSSL_free(dest->seed); |
0f113f3e MC |
263 | dest->seed = NULL; |
264 | dest->seed_len = 0; | |
265 | } | |
266 | ||
267 | return dest->meth->group_copy(dest, src); | |
268 | } | |
0657bf9c | 269 | |
7793f30e | 270 | EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) |
0f113f3e MC |
271 | { |
272 | EC_GROUP *t = NULL; | |
273 | int ok = 0; | |
7793f30e | 274 | |
0f113f3e MC |
275 | if (a == NULL) |
276 | return NULL; | |
7793f30e | 277 | |
0f113f3e MC |
278 | if ((t = EC_GROUP_new(a->meth)) == NULL) |
279 | return (NULL); | |
280 | if (!EC_GROUP_copy(t, a)) | |
281 | goto err; | |
7793f30e | 282 | |
0f113f3e | 283 | ok = 1; |
7793f30e | 284 | |
0f113f3e MC |
285 | err: |
286 | if (!ok) { | |
8fdc3734 | 287 | EC_GROUP_free(t); |
0f113f3e | 288 | return NULL; |
8fdc3734 | 289 | } |
0f113f3e MC |
290 | return t; |
291 | } | |
7793f30e | 292 | |
48fe4d62 | 293 | const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) |
0f113f3e MC |
294 | { |
295 | return group->meth; | |
296 | } | |
48fe4d62 | 297 | |
458c2917 | 298 | int EC_METHOD_get_field_type(const EC_METHOD *meth) |
0f113f3e MC |
299 | { |
300 | return meth->field_type; | |
301 | } | |
302 | ||
303 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, | |
304 | const BIGNUM *order, const BIGNUM *cofactor) | |
305 | { | |
306 | if (generator == NULL) { | |
307 | ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | if (group->generator == NULL) { | |
312 | group->generator = EC_POINT_new(group); | |
313 | if (group->generator == NULL) | |
314 | return 0; | |
315 | } | |
316 | if (!EC_POINT_copy(group->generator, generator)) | |
317 | return 0; | |
318 | ||
319 | if (order != NULL) { | |
320 | if (!BN_copy(group->order, order)) | |
321 | return 0; | |
322 | } else | |
323 | BN_zero(group->order); | |
324 | ||
325 | if (cofactor != NULL) { | |
326 | if (!BN_copy(group->cofactor, cofactor)) | |
327 | return 0; | |
328 | } else | |
329 | BN_zero(group->cofactor); | |
330 | ||
331 | /* | |
332 | * We ignore the return value because some groups have an order with | |
333 | * factors of two, which makes the Montgomery setup fail. | |
334 | * |group->mont_data| will be NULL in this case. | |
335 | */ | |
336 | ec_precompute_mont_data(group); | |
337 | ||
338 | return 1; | |
339 | } | |
bb62a8b0 | 340 | |
9dd84053 | 341 | const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) |
0f113f3e MC |
342 | { |
343 | return group->generator; | |
344 | } | |
bb62a8b0 | 345 | |
f54be179 | 346 | BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group) |
0f113f3e MC |
347 | { |
348 | return group->mont_data; | |
349 | } | |
bb62a8b0 | 350 | |
b6db386f | 351 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) |
0f113f3e MC |
352 | { |
353 | if (!BN_copy(order, group->order)) | |
354 | return 0; | |
0657bf9c | 355 | |
0f113f3e MC |
356 | return !BN_is_zero(order); |
357 | } | |
0657bf9c | 358 | |
0f113f3e MC |
359 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, |
360 | BN_CTX *ctx) | |
361 | { | |
362 | if (!BN_copy(cofactor, group->cofactor)) | |
363 | return 0; | |
48fe4d62 | 364 | |
0f113f3e MC |
365 | return !BN_is_zero(group->cofactor); |
366 | } | |
48fe4d62 | 367 | |
7dc17a6c | 368 | void EC_GROUP_set_curve_name(EC_GROUP *group, int nid) |
0f113f3e MC |
369 | { |
370 | group->curve_name = nid; | |
371 | } | |
b6db386f | 372 | |
7dc17a6c | 373 | int EC_GROUP_get_curve_name(const EC_GROUP *group) |
0f113f3e MC |
374 | { |
375 | return group->curve_name; | |
376 | } | |
b6db386f | 377 | |
458c2917 | 378 | void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) |
0f113f3e MC |
379 | { |
380 | group->asn1_flag = flag; | |
381 | } | |
458c2917 BM |
382 | |
383 | int EC_GROUP_get_asn1_flag(const EC_GROUP *group) | |
0f113f3e MC |
384 | { |
385 | return group->asn1_flag; | |
386 | } | |
458c2917 | 387 | |
0f113f3e | 388 | void EC_GROUP_set_point_conversion_form(EC_GROUP *group, |
254ef80d | 389 | point_conversion_form_t form) |
0f113f3e MC |
390 | { |
391 | group->asn1_form = form; | |
392 | } | |
254ef80d | 393 | |
0f113f3e MC |
394 | point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP |
395 | *group) | |
396 | { | |
397 | return group->asn1_form; | |
398 | } | |
254ef80d | 399 | |
5f3d6f70 | 400 | size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len) |
0f113f3e | 401 | { |
b548a1f1 RS |
402 | OPENSSL_free(group->seed); |
403 | group->seed = NULL; | |
404 | group->seed_len = 0; | |
5f3d6f70 | 405 | |
0f113f3e MC |
406 | if (!len || !p) |
407 | return 1; | |
5f3d6f70 | 408 | |
0f113f3e MC |
409 | if ((group->seed = OPENSSL_malloc(len)) == NULL) |
410 | return 0; | |
411 | memcpy(group->seed, p, len); | |
412 | group->seed_len = len; | |
5f3d6f70 | 413 | |
0f113f3e MC |
414 | return len; |
415 | } | |
5f3d6f70 BM |
416 | |
417 | unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group) | |
0f113f3e MC |
418 | { |
419 | return group->seed; | |
420 | } | |
5f3d6f70 BM |
421 | |
422 | size_t EC_GROUP_get_seed_len(const EC_GROUP *group) | |
0f113f3e MC |
423 | { |
424 | return group->seed_len; | |
425 | } | |
426 | ||
427 | int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, | |
428 | const BIGNUM *b, BN_CTX *ctx) | |
429 | { | |
430 | if (group->meth->group_set_curve == 0) { | |
431 | ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
432 | return 0; | |
433 | } | |
434 | return group->meth->group_set_curve(group, p, a, b, ctx); | |
435 | } | |
436 | ||
437 | int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, | |
438 | BIGNUM *b, BN_CTX *ctx) | |
439 | { | |
440 | if (group->meth->group_get_curve == 0) { | |
441 | ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
442 | return 0; | |
443 | } | |
444 | return group->meth->group_get_curve(group, p, a, b, ctx); | |
445 | } | |
7793f30e | 446 | |
b3310161 | 447 | #ifndef OPENSSL_NO_EC2M |
0f113f3e MC |
448 | int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, |
449 | const BIGNUM *b, BN_CTX *ctx) | |
450 | { | |
451 | if (group->meth->group_set_curve == 0) { | |
452 | ECerr(EC_F_EC_GROUP_SET_CURVE_GF2M, | |
453 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
454 | return 0; | |
455 | } | |
456 | return group->meth->group_set_curve(group, p, a, b, ctx); | |
457 | } | |
458 | ||
459 | int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, | |
460 | BIGNUM *b, BN_CTX *ctx) | |
461 | { | |
462 | if (group->meth->group_get_curve == 0) { | |
463 | ECerr(EC_F_EC_GROUP_GET_CURVE_GF2M, | |
464 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
465 | return 0; | |
466 | } | |
467 | return group->meth->group_get_curve(group, p, a, b, ctx); | |
468 | } | |
b3310161 | 469 | #endif |
7793f30e BM |
470 | |
471 | int EC_GROUP_get_degree(const EC_GROUP *group) | |
0f113f3e MC |
472 | { |
473 | if (group->meth->group_get_degree == 0) { | |
474 | ECerr(EC_F_EC_GROUP_GET_DEGREE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
475 | return 0; | |
476 | } | |
477 | return group->meth->group_get_degree(group); | |
478 | } | |
48fe4d62 | 479 | |
17d6bb81 | 480 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) |
0f113f3e MC |
481 | { |
482 | if (group->meth->group_check_discriminant == 0) { | |
483 | ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, | |
484 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
485 | return 0; | |
486 | } | |
487 | return group->meth->group_check_discriminant(group, ctx); | |
488 | } | |
af28dd6c | 489 | |
ada0e717 | 490 | int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx) |
0f113f3e MC |
491 | { |
492 | int r = 0; | |
493 | BIGNUM *a1, *a2, *a3, *b1, *b2, *b3; | |
494 | BN_CTX *ctx_new = NULL; | |
495 | ||
496 | /* compare the field types */ | |
497 | if (EC_METHOD_get_field_type(EC_GROUP_method_of(a)) != | |
498 | EC_METHOD_get_field_type(EC_GROUP_method_of(b))) | |
499 | return 1; | |
500 | /* compare the curve name (if present in both) */ | |
501 | if (EC_GROUP_get_curve_name(a) && EC_GROUP_get_curve_name(b) && | |
502 | EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b)) | |
503 | return 1; | |
504 | ||
90945fa3 | 505 | if (ctx == NULL) |
0f113f3e | 506 | ctx_new = ctx = BN_CTX_new(); |
90945fa3 | 507 | if (ctx == NULL) |
0f113f3e MC |
508 | return -1; |
509 | ||
510 | BN_CTX_start(ctx); | |
511 | a1 = BN_CTX_get(ctx); | |
512 | a2 = BN_CTX_get(ctx); | |
513 | a3 = BN_CTX_get(ctx); | |
514 | b1 = BN_CTX_get(ctx); | |
515 | b2 = BN_CTX_get(ctx); | |
516 | b3 = BN_CTX_get(ctx); | |
90945fa3 | 517 | if (b3 == NULL) { |
0f113f3e | 518 | BN_CTX_end(ctx); |
23a1d5e9 | 519 | BN_CTX_free(ctx_new); |
0f113f3e MC |
520 | return -1; |
521 | } | |
522 | ||
523 | /* | |
524 | * XXX This approach assumes that the external representation of curves | |
525 | * over the same field type is the same. | |
526 | */ | |
527 | if (!a->meth->group_get_curve(a, a1, a2, a3, ctx) || | |
528 | !b->meth->group_get_curve(b, b1, b2, b3, ctx)) | |
529 | r = 1; | |
530 | ||
531 | if (r || BN_cmp(a1, b1) || BN_cmp(a2, b2) || BN_cmp(a3, b3)) | |
532 | r = 1; | |
533 | ||
534 | /* XXX EC_POINT_cmp() assumes that the methods are equal */ | |
535 | if (r || EC_POINT_cmp(a, EC_GROUP_get0_generator(a), | |
536 | EC_GROUP_get0_generator(b), ctx)) | |
537 | r = 1; | |
538 | ||
539 | if (!r) { | |
540 | /* compare the order and cofactor */ | |
541 | if (!EC_GROUP_get_order(a, a1, ctx) || | |
542 | !EC_GROUP_get_order(b, b1, ctx) || | |
543 | !EC_GROUP_get_cofactor(a, a2, ctx) || | |
544 | !EC_GROUP_get_cofactor(b, b2, ctx)) { | |
545 | BN_CTX_end(ctx); | |
23a1d5e9 | 546 | BN_CTX_free(ctx_new); |
0f113f3e MC |
547 | return -1; |
548 | } | |
549 | if (BN_cmp(a1, b1) || BN_cmp(a2, b2)) | |
550 | r = 1; | |
551 | } | |
552 | ||
553 | BN_CTX_end(ctx); | |
23a1d5e9 | 554 | BN_CTX_free(ctx_new); |
ada0e717 | 555 | |
0f113f3e MC |
556 | return r; |
557 | } | |
ada0e717 | 558 | |
0657bf9c BM |
559 | /* functions for EC_POINT objects */ |
560 | ||
561 | EC_POINT *EC_POINT_new(const EC_GROUP *group) | |
0f113f3e MC |
562 | { |
563 | EC_POINT *ret; | |
564 | ||
565 | if (group == NULL) { | |
566 | ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); | |
567 | return NULL; | |
568 | } | |
569 | if (group->meth->point_init == 0) { | |
570 | ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
571 | return NULL; | |
572 | } | |
573 | ||
b4faea50 | 574 | ret = OPENSSL_malloc(sizeof(*ret)); |
0f113f3e MC |
575 | if (ret == NULL) { |
576 | ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); | |
577 | return NULL; | |
578 | } | |
579 | ||
580 | ret->meth = group->meth; | |
581 | ||
582 | if (!ret->meth->point_init(ret)) { | |
583 | OPENSSL_free(ret); | |
584 | return NULL; | |
585 | } | |
586 | ||
587 | return ret; | |
588 | } | |
0657bf9c BM |
589 | |
590 | void EC_POINT_free(EC_POINT *point) | |
0f113f3e MC |
591 | { |
592 | if (!point) | |
593 | return; | |
7711de24 | 594 | |
0f113f3e MC |
595 | if (point->meth->point_finish != 0) |
596 | point->meth->point_finish(point); | |
597 | OPENSSL_free(point); | |
598 | } | |
0657bf9c BM |
599 | |
600 | void EC_POINT_clear_free(EC_POINT *point) | |
0f113f3e MC |
601 | { |
602 | if (!point) | |
603 | return; | |
604 | ||
605 | if (point->meth->point_clear_finish != 0) | |
606 | point->meth->point_clear_finish(point); | |
607 | else if (point->meth->point_finish != 0) | |
608 | point->meth->point_finish(point); | |
b4faea50 | 609 | OPENSSL_clear_free(point, sizeof(*point)); |
0f113f3e | 610 | } |
0657bf9c BM |
611 | |
612 | int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) | |
0f113f3e MC |
613 | { |
614 | if (dest->meth->point_copy == 0) { | |
615 | ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
616 | return 0; | |
617 | } | |
618 | if (dest->meth != src->meth) { | |
619 | ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); | |
620 | return 0; | |
621 | } | |
622 | if (dest == src) | |
623 | return 1; | |
624 | return dest->meth->point_copy(dest, src); | |
625 | } | |
0657bf9c | 626 | |
7793f30e | 627 | EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group) |
0f113f3e MC |
628 | { |
629 | EC_POINT *t; | |
630 | int r; | |
631 | ||
632 | if (a == NULL) | |
633 | return NULL; | |
634 | ||
635 | t = EC_POINT_new(group); | |
636 | if (t == NULL) | |
637 | return (NULL); | |
638 | r = EC_POINT_copy(t, a); | |
639 | if (!r) { | |
640 | EC_POINT_free(t); | |
641 | return NULL; | |
8fdc3734 RS |
642 | } |
643 | return t; | |
0f113f3e | 644 | } |
7793f30e | 645 | |
48fe4d62 | 646 | const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) |
0f113f3e MC |
647 | { |
648 | return point->meth; | |
649 | } | |
48fe4d62 | 650 | |
226cc7de | 651 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) |
0f113f3e MC |
652 | { |
653 | if (group->meth->point_set_to_infinity == 0) { | |
654 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, | |
655 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
656 | return 0; | |
657 | } | |
658 | if (group->meth != point->meth) { | |
659 | ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
660 | return 0; | |
661 | } | |
662 | return group->meth->point_set_to_infinity(group, point); | |
663 | } | |
664 | ||
665 | int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, | |
666 | EC_POINT *point, const BIGNUM *x, | |
667 | const BIGNUM *y, const BIGNUM *z, | |
668 | BN_CTX *ctx) | |
669 | { | |
670 | if (group->meth->point_set_Jprojective_coordinates_GFp == 0) { | |
671 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, | |
672 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
673 | return 0; | |
674 | } | |
675 | if (group->meth != point->meth) { | |
676 | ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, | |
677 | EC_R_INCOMPATIBLE_OBJECTS); | |
678 | return 0; | |
679 | } | |
680 | return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, | |
681 | y, z, ctx); | |
682 | } | |
683 | ||
684 | int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, | |
685 | const EC_POINT *point, BIGNUM *x, | |
686 | BIGNUM *y, BIGNUM *z, | |
687 | BN_CTX *ctx) | |
688 | { | |
689 | if (group->meth->point_get_Jprojective_coordinates_GFp == 0) { | |
690 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, | |
691 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
692 | return 0; | |
693 | } | |
694 | if (group->meth != point->meth) { | |
695 | ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, | |
696 | EC_R_INCOMPATIBLE_OBJECTS); | |
697 | return 0; | |
698 | } | |
699 | return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, | |
700 | y, z, ctx); | |
701 | } | |
702 | ||
703 | int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, | |
704 | EC_POINT *point, const BIGNUM *x, | |
705 | const BIGNUM *y, BN_CTX *ctx) | |
706 | { | |
707 | if (group->meth->point_set_affine_coordinates == 0) { | |
708 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, | |
709 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
710 | return 0; | |
711 | } | |
712 | if (group->meth != point->meth) { | |
713 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, | |
714 | EC_R_INCOMPATIBLE_OBJECTS); | |
715 | return 0; | |
716 | } | |
717 | return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); | |
718 | } | |
226cc7de | 719 | |
b3310161 | 720 | #ifndef OPENSSL_NO_EC2M |
0f113f3e MC |
721 | int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, |
722 | EC_POINT *point, const BIGNUM *x, | |
723 | const BIGNUM *y, BN_CTX *ctx) | |
724 | { | |
725 | if (group->meth->point_set_affine_coordinates == 0) { | |
726 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, | |
727 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
728 | return 0; | |
729 | } | |
730 | if (group->meth != point->meth) { | |
731 | ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, | |
732 | EC_R_INCOMPATIBLE_OBJECTS); | |
733 | return 0; | |
734 | } | |
735 | return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); | |
736 | } | |
b3310161 | 737 | #endif |
7793f30e | 738 | |
0f113f3e MC |
739 | int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, |
740 | const EC_POINT *point, BIGNUM *x, | |
741 | BIGNUM *y, BN_CTX *ctx) | |
742 | { | |
743 | if (group->meth->point_get_affine_coordinates == 0) { | |
744 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, | |
745 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
746 | return 0; | |
747 | } | |
748 | if (group->meth != point->meth) { | |
749 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, | |
750 | EC_R_INCOMPATIBLE_OBJECTS); | |
751 | return 0; | |
752 | } | |
753 | return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); | |
754 | } | |
7793f30e | 755 | |
b3310161 | 756 | #ifndef OPENSSL_NO_EC2M |
0f113f3e MC |
757 | int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, |
758 | const EC_POINT *point, BIGNUM *x, | |
759 | BIGNUM *y, BN_CTX *ctx) | |
760 | { | |
761 | if (group->meth->point_get_affine_coordinates == 0) { | |
762 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, | |
763 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
764 | return 0; | |
765 | } | |
766 | if (group->meth != point->meth) { | |
767 | ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, | |
768 | EC_R_INCOMPATIBLE_OBJECTS); | |
769 | return 0; | |
770 | } | |
771 | return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); | |
772 | } | |
b3310161 | 773 | #endif |
7793f30e | 774 | |
0f113f3e MC |
775 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, |
776 | const EC_POINT *b, BN_CTX *ctx) | |
777 | { | |
778 | if (group->meth->add == 0) { | |
779 | ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
780 | return 0; | |
781 | } | |
782 | if ((group->meth != r->meth) || (r->meth != a->meth) | |
783 | || (a->meth != b->meth)) { | |
784 | ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); | |
785 | return 0; | |
786 | } | |
787 | return group->meth->add(group, r, a, b, ctx); | |
788 | } | |
789 | ||
790 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, | |
791 | BN_CTX *ctx) | |
792 | { | |
793 | if (group->meth->dbl == 0) { | |
794 | ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
795 | return 0; | |
796 | } | |
797 | if ((group->meth != r->meth) || (r->meth != a->meth)) { | |
798 | ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); | |
799 | return 0; | |
800 | } | |
801 | return group->meth->dbl(group, r, a, ctx); | |
802 | } | |
0657bf9c | 803 | |
1d5bd6cf | 804 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) |
0f113f3e MC |
805 | { |
806 | if (group->meth->invert == 0) { | |
807 | ECerr(EC_F_EC_POINT_INVERT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
808 | return 0; | |
809 | } | |
810 | if (group->meth != a->meth) { | |
811 | ECerr(EC_F_EC_POINT_INVERT, EC_R_INCOMPATIBLE_OBJECTS); | |
812 | return 0; | |
813 | } | |
814 | return group->meth->invert(group, a, ctx); | |
815 | } | |
1d5bd6cf | 816 | |
0657bf9c | 817 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) |
0f113f3e MC |
818 | { |
819 | if (group->meth->is_at_infinity == 0) { | |
820 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, | |
821 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
822 | return 0; | |
823 | } | |
824 | if (group->meth != point->meth) { | |
825 | ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); | |
826 | return 0; | |
827 | } | |
828 | return group->meth->is_at_infinity(group, point); | |
829 | } | |
830 | ||
68886be7 MC |
831 | /* |
832 | * Check whether an EC_POINT is on the curve or not. Note that the return | |
833 | * value for this function should NOT be treated as a boolean. Return values: | |
834 | * 1: The point is on the curve | |
835 | * 0: The point is not on the curve | |
836 | * -1: An error occurred | |
837 | */ | |
0f113f3e MC |
838 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, |
839 | BN_CTX *ctx) | |
840 | { | |
841 | if (group->meth->is_on_curve == 0) { | |
842 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
843 | return 0; | |
844 | } | |
845 | if (group->meth != point->meth) { | |
846 | ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); | |
847 | return 0; | |
848 | } | |
849 | return group->meth->is_on_curve(group, point, ctx); | |
850 | } | |
851 | ||
852 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, | |
853 | BN_CTX *ctx) | |
854 | { | |
855 | if (group->meth->point_cmp == 0) { | |
856 | ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
857 | return -1; | |
858 | } | |
859 | if ((group->meth != a->meth) || (a->meth != b->meth)) { | |
860 | ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); | |
861 | return -1; | |
862 | } | |
863 | return group->meth->point_cmp(group, a, b, ctx); | |
864 | } | |
1d5bd6cf | 865 | |
e869d4bd | 866 | int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) |
0f113f3e MC |
867 | { |
868 | if (group->meth->make_affine == 0) { | |
869 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
870 | return 0; | |
871 | } | |
872 | if (group->meth != point->meth) { | |
873 | ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
874 | return 0; | |
875 | } | |
876 | return group->meth->make_affine(group, point, ctx); | |
877 | } | |
878 | ||
879 | int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, | |
880 | EC_POINT *points[], BN_CTX *ctx) | |
881 | { | |
882 | size_t i; | |
883 | ||
884 | if (group->meth->points_make_affine == 0) { | |
885 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
886 | return 0; | |
887 | } | |
888 | for (i = 0; i < num; i++) { | |
889 | if (group->meth != points[i]->meth) { | |
890 | ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); | |
891 | return 0; | |
892 | } | |
893 | } | |
894 | return group->meth->points_make_affine(group, num, points, ctx); | |
895 | } | |
896 | ||
897 | /* | |
898 | * Functions for point multiplication. If group->meth->mul is 0, we use the | |
899 | * wNAF-based implementations in ec_mult.c; otherwise we dispatch through | |
900 | * methods. | |
37c660ff BM |
901 | */ |
902 | ||
903 | int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar, | |
0f113f3e MC |
904 | size_t num, const EC_POINT *points[], |
905 | const BIGNUM *scalars[], BN_CTX *ctx) | |
906 | { | |
907 | if (group->meth->mul == 0) | |
908 | /* use default */ | |
909 | return ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx); | |
37c660ff | 910 | |
0f113f3e MC |
911 | return group->meth->mul(group, r, scalar, num, points, scalars, ctx); |
912 | } | |
37c660ff BM |
913 | |
914 | int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar, | |
0f113f3e MC |
915 | const EC_POINT *point, const BIGNUM *p_scalar, BN_CTX *ctx) |
916 | { | |
917 | /* just a convenient interface to EC_POINTs_mul() */ | |
37c660ff | 918 | |
0f113f3e MC |
919 | const EC_POINT *points[1]; |
920 | const BIGNUM *scalars[1]; | |
37c660ff | 921 | |
0f113f3e MC |
922 | points[0] = point; |
923 | scalars[0] = p_scalar; | |
37c660ff | 924 | |
0f113f3e MC |
925 | return EC_POINTs_mul(group, r, g_scalar, |
926 | (point != NULL | |
927 | && p_scalar != NULL), points, scalars, ctx); | |
928 | } | |
37c660ff BM |
929 | |
930 | int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx) | |
0f113f3e MC |
931 | { |
932 | if (group->meth->mul == 0) | |
933 | /* use default */ | |
934 | return ec_wNAF_precompute_mult(group, ctx); | |
37c660ff | 935 | |
0f113f3e MC |
936 | if (group->meth->precompute_mult != 0) |
937 | return group->meth->precompute_mult(group, ctx); | |
938 | else | |
939 | return 1; /* nothing to do, so report success */ | |
940 | } | |
37c660ff BM |
941 | |
942 | int EC_GROUP_have_precompute_mult(const EC_GROUP *group) | |
0f113f3e MC |
943 | { |
944 | if (group->meth->mul == 0) | |
945 | /* use default */ | |
946 | return ec_wNAF_have_precompute_mult(group); | |
947 | ||
948 | if (group->meth->have_precompute_mult != 0) | |
949 | return group->meth->have_precompute_mult(group); | |
950 | else | |
951 | return 0; /* cannot tell whether precomputation has | |
952 | * been performed */ | |
953 | } | |
954 | ||
955 | /* | |
956 | * ec_precompute_mont_data sets |group->mont_data| from |group->order| and | |
957 | * returns one on success. On error it returns zero. | |
958 | */ | |
f54be179 | 959 | int ec_precompute_mont_data(EC_GROUP *group) |
0f113f3e MC |
960 | { |
961 | BN_CTX *ctx = BN_CTX_new(); | |
962 | int ret = 0; | |
963 | ||
23a1d5e9 RS |
964 | BN_MONT_CTX_free(group->mont_data); |
965 | group->mont_data = NULL; | |
0f113f3e MC |
966 | |
967 | if (ctx == NULL) | |
968 | goto err; | |
969 | ||
970 | group->mont_data = BN_MONT_CTX_new(); | |
90945fa3 | 971 | if (group->mont_data == NULL) |
0f113f3e MC |
972 | goto err; |
973 | ||
974 | if (!BN_MONT_CTX_set(group->mont_data, group->order, ctx)) { | |
975 | BN_MONT_CTX_free(group->mont_data); | |
976 | group->mont_data = NULL; | |
977 | goto err; | |
978 | } | |
979 | ||
980 | ret = 1; | |
981 | ||
982 | err: | |
983 | ||
23a1d5e9 | 984 | BN_CTX_free(ctx); |
0f113f3e MC |
985 | return ret; |
986 | } | |
3aef36ff RS |
987 | |
988 | int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg) | |
989 | { | |
990 | return CRYPTO_set_ex_data(&key->ex_data, idx, arg); | |
991 | } | |
992 | ||
993 | void *EC_KEY_get_ex_data(const EC_KEY *key, int idx) | |
994 | { | |
995 | return CRYPTO_get_ex_data(&key->ex_data, idx); | |
996 | } |