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14a7cfb3 BM |
1 | /* crypto/ec/ec_key.c */ |
2 | /* | |
3 | * Written by Nils Larsch for the OpenSSL project. | |
4 | */ | |
5 | /* ==================================================================== | |
9dd84053 | 6 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
14a7cfb3 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. |
14a7cfb3 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 | */ | |
e172d60d BM |
58 | /* ==================================================================== |
59 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
0f113f3e | 60 | * Portions originally developed by SUN MICROSYSTEMS, INC., and |
e172d60d BM |
61 | * contributed to the OpenSSL project. |
62 | */ | |
14a7cfb3 | 63 | |
984d6c60 | 64 | #include <internal/cryptlib.h> |
5454829a | 65 | #include <string.h> |
14a7cfb3 BM |
66 | #include "ec_lcl.h" |
67 | #include <openssl/err.h> | |
33bed28b | 68 | #ifndef OPENSSL_NO_ENGINE |
51966416 DSH |
69 | # include <openssl/engine.h> |
70 | #endif | |
14a7cfb3 BM |
71 | |
72 | EC_KEY *EC_KEY_new(void) | |
0f113f3e | 73 | { |
28572b57 | 74 | return EC_KEY_new_method(NULL); |
0f113f3e | 75 | } |
14a7cfb3 | 76 | |
9dd84053 | 77 | EC_KEY *EC_KEY_new_by_curve_name(int nid) |
0f113f3e MC |
78 | { |
79 | EC_KEY *ret = EC_KEY_new(); | |
80 | if (ret == NULL) | |
81 | return NULL; | |
82 | ret->group = EC_GROUP_new_by_curve_name(nid); | |
83 | if (ret->group == NULL) { | |
84 | EC_KEY_free(ret); | |
85 | return NULL; | |
86 | } | |
91e7bcc2 DSH |
87 | if (ret->meth->set_group != NULL |
88 | && ret->meth->set_group(ret, ret->group) == 0) { | |
3475bc96 DSH |
89 | EC_KEY_free(ret); |
90 | return NULL; | |
91 | } | |
0f113f3e MC |
92 | return ret; |
93 | } | |
14a7cfb3 BM |
94 | |
95 | void EC_KEY_free(EC_KEY *r) | |
0f113f3e MC |
96 | { |
97 | int i; | |
14a7cfb3 | 98 | |
0f113f3e MC |
99 | if (r == NULL) |
100 | return; | |
14a7cfb3 | 101 | |
0f113f3e | 102 | i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC); |
14a7cfb3 | 103 | #ifdef REF_PRINT |
0f113f3e | 104 | REF_PRINT("EC_KEY", r); |
14a7cfb3 | 105 | #endif |
0f113f3e MC |
106 | if (i > 0) |
107 | return; | |
14a7cfb3 | 108 | #ifdef REF_CHECK |
0f113f3e MC |
109 | if (i < 0) { |
110 | fprintf(stderr, "EC_KEY_free, bad reference count\n"); | |
111 | abort(); | |
112 | } | |
14a7cfb3 BM |
113 | #endif |
114 | ||
91e7bcc2 | 115 | if (r->meth->finish != NULL) |
0d6ff6d3 DSH |
116 | r->meth->finish(r); |
117 | ||
51966416 | 118 | #ifndef OPENSSL_NO_ENGINE |
91e7bcc2 | 119 | if (r->engine != NULL) |
51966416 DSH |
120 | ENGINE_finish(r->engine); |
121 | #endif | |
122 | ||
3aef36ff | 123 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, r, &r->ex_data); |
8fdc3734 RS |
124 | EC_GROUP_free(r->group); |
125 | EC_POINT_free(r->pub_key); | |
23a1d5e9 | 126 | BN_clear_free(r->priv_key); |
14a7cfb3 | 127 | |
4b45c6e5 | 128 | OPENSSL_clear_free((void *)r, sizeof(EC_KEY)); |
0f113f3e | 129 | } |
14a7cfb3 | 130 | |
3aef36ff | 131 | EC_KEY *EC_KEY_copy(EC_KEY *dest, EC_KEY *src) |
0f113f3e | 132 | { |
0f113f3e MC |
133 | if (dest == NULL || src == NULL) { |
134 | ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER); | |
135 | return NULL; | |
136 | } | |
ea0392b9 | 137 | if (src->meth != dest->meth) { |
91e7bcc2 | 138 | if (dest->meth->finish != NULL) |
ea0392b9 DSH |
139 | dest->meth->finish(dest); |
140 | #ifndef OPENSSL_NO_ENGINE | |
91e7bcc2 | 141 | if (dest->engine != NULL && ENGINE_finish(dest->engine) == 0) |
ea0392b9 DSH |
142 | return 0; |
143 | dest->engine = NULL; | |
144 | #endif | |
145 | } | |
0f113f3e | 146 | /* copy the parameters */ |
91e7bcc2 | 147 | if (src->group != NULL) { |
0f113f3e MC |
148 | const EC_METHOD *meth = EC_GROUP_method_of(src->group); |
149 | /* clear the old group */ | |
8fdc3734 | 150 | EC_GROUP_free(dest->group); |
0f113f3e MC |
151 | dest->group = EC_GROUP_new(meth); |
152 | if (dest->group == NULL) | |
153 | return NULL; | |
154 | if (!EC_GROUP_copy(dest->group, src->group)) | |
155 | return NULL; | |
156 | } | |
157 | /* copy the public key */ | |
91e7bcc2 | 158 | if (src->pub_key != NULL && src->group != NULL) { |
8fdc3734 | 159 | EC_POINT_free(dest->pub_key); |
0f113f3e MC |
160 | dest->pub_key = EC_POINT_new(src->group); |
161 | if (dest->pub_key == NULL) | |
162 | return NULL; | |
163 | if (!EC_POINT_copy(dest->pub_key, src->pub_key)) | |
164 | return NULL; | |
165 | } | |
166 | /* copy the private key */ | |
91e7bcc2 | 167 | if (src->priv_key != NULL) { |
0f113f3e MC |
168 | if (dest->priv_key == NULL) { |
169 | dest->priv_key = BN_new(); | |
170 | if (dest->priv_key == NULL) | |
171 | return NULL; | |
172 | } | |
173 | if (!BN_copy(dest->priv_key, src->priv_key)) | |
174 | return NULL; | |
175 | } | |
0f113f3e MC |
176 | |
177 | /* copy the rest */ | |
178 | dest->enc_flag = src->enc_flag; | |
179 | dest->conv_form = src->conv_form; | |
180 | dest->version = src->version; | |
181 | dest->flags = src->flags; | |
3aef36ff RS |
182 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EC_KEY, |
183 | &dest->ex_data, &src->ex_data)) | |
184 | return NULL; | |
0f113f3e | 185 | |
ea0392b9 DSH |
186 | if (src->meth != dest->meth) { |
187 | #ifndef OPENSSL_NO_ENGINE | |
91e7bcc2 DSH |
188 | if (src->engine != NULL && ENGINE_init(src->engine) == 0) |
189 | return NULL; | |
ea0392b9 DSH |
190 | dest->engine = src->engine; |
191 | #endif | |
192 | dest->meth = src->meth; | |
193 | } | |
194 | ||
91e7bcc2 DSH |
195 | if (src->meth->copy != NULL && src->meth->copy(dest, src) == 0) |
196 | return NULL; | |
ea0392b9 | 197 | |
0f113f3e MC |
198 | return dest; |
199 | } | |
14a7cfb3 | 200 | |
3aef36ff | 201 | EC_KEY *EC_KEY_dup(EC_KEY *ec_key) |
0f113f3e | 202 | { |
ea0392b9 | 203 | EC_KEY *ret = EC_KEY_new_method(ec_key->engine); |
3aef36ff | 204 | |
0f113f3e MC |
205 | if (ret == NULL) |
206 | return NULL; | |
207 | if (EC_KEY_copy(ret, ec_key) == NULL) { | |
208 | EC_KEY_free(ret); | |
209 | return NULL; | |
210 | } | |
211 | return ret; | |
212 | } | |
14a7cfb3 | 213 | |
e172d60d | 214 | int EC_KEY_up_ref(EC_KEY *r) |
0f113f3e MC |
215 | { |
216 | int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC); | |
e172d60d | 217 | #ifdef REF_PRINT |
0f113f3e | 218 | REF_PRINT("EC_KEY", r); |
e172d60d BM |
219 | #endif |
220 | #ifdef REF_CHECK | |
0f113f3e MC |
221 | if (i < 2) { |
222 | fprintf(stderr, "EC_KEY_up, bad reference count\n"); | |
223 | abort(); | |
224 | } | |
e172d60d | 225 | #endif |
0f113f3e MC |
226 | return ((i > 1) ? 1 : 0); |
227 | } | |
e172d60d | 228 | |
14a7cfb3 | 229 | int EC_KEY_generate_key(EC_KEY *eckey) |
0f113f3e | 230 | { |
91e7bcc2 | 231 | if (eckey == NULL || eckey->group == NULL) { |
0f113f3e MC |
232 | ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER); |
233 | return 0; | |
234 | } | |
91e7bcc2 | 235 | if (eckey->meth->keygen != NULL) |
5a6a1029 DSH |
236 | return eckey->meth->keygen(eckey); |
237 | ECerr(EC_F_EC_KEY_GENERATE_KEY, EC_R_OPERATION_NOT_SUPPORTED); | |
238 | return 0; | |
239 | } | |
240 | ||
241 | int ossl_ec_key_gen(EC_KEY *eckey) | |
242 | { | |
243 | int ok = 0; | |
244 | BN_CTX *ctx = NULL; | |
245 | BIGNUM *priv_key = NULL, *order = NULL; | |
246 | EC_POINT *pub_key = NULL; | |
0f113f3e MC |
247 | |
248 | if ((order = BN_new()) == NULL) | |
249 | goto err; | |
250 | if ((ctx = BN_CTX_new()) == NULL) | |
251 | goto err; | |
252 | ||
253 | if (eckey->priv_key == NULL) { | |
254 | priv_key = BN_new(); | |
255 | if (priv_key == NULL) | |
256 | goto err; | |
257 | } else | |
258 | priv_key = eckey->priv_key; | |
259 | ||
260 | if (!EC_GROUP_get_order(eckey->group, order, ctx)) | |
261 | goto err; | |
262 | ||
263 | do | |
264 | if (!BN_rand_range(priv_key, order)) | |
265 | goto err; | |
266 | while (BN_is_zero(priv_key)) ; | |
267 | ||
268 | if (eckey->pub_key == NULL) { | |
269 | pub_key = EC_POINT_new(eckey->group); | |
270 | if (pub_key == NULL) | |
271 | goto err; | |
272 | } else | |
273 | pub_key = eckey->pub_key; | |
274 | ||
275 | if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx)) | |
276 | goto err; | |
277 | ||
278 | eckey->priv_key = priv_key; | |
279 | eckey->pub_key = pub_key; | |
280 | ||
281 | ok = 1; | |
282 | ||
283 | err: | |
23a1d5e9 | 284 | BN_free(order); |
8fdc3734 | 285 | if (eckey->pub_key == NULL) |
0f113f3e | 286 | EC_POINT_free(pub_key); |
23a1d5e9 | 287 | if (eckey->priv_key != priv_key) |
0f113f3e | 288 | BN_free(priv_key); |
23a1d5e9 | 289 | BN_CTX_free(ctx); |
0f113f3e MC |
290 | return (ok); |
291 | } | |
14a7cfb3 BM |
292 | |
293 | int EC_KEY_check_key(const EC_KEY *eckey) | |
0f113f3e MC |
294 | { |
295 | int ok = 0; | |
296 | BN_CTX *ctx = NULL; | |
297 | const BIGNUM *order = NULL; | |
298 | EC_POINT *point = NULL; | |
299 | ||
91e7bcc2 | 300 | if (eckey == NULL || eckey->group == NULL || eckey->pub_key == NULL) { |
0f113f3e MC |
301 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER); |
302 | return 0; | |
303 | } | |
304 | ||
305 | if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) { | |
306 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY); | |
307 | goto err; | |
308 | } | |
309 | ||
310 | if ((ctx = BN_CTX_new()) == NULL) | |
311 | goto err; | |
312 | if ((point = EC_POINT_new(eckey->group)) == NULL) | |
313 | goto err; | |
314 | ||
315 | /* testing whether the pub_key is on the elliptic curve */ | |
68886be7 | 316 | if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) { |
0f113f3e MC |
317 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE); |
318 | goto err; | |
319 | } | |
320 | /* testing whether pub_key * order is the point at infinity */ | |
321 | order = eckey->group->order; | |
322 | if (BN_is_zero(order)) { | |
323 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER); | |
324 | goto err; | |
325 | } | |
326 | if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) { | |
327 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
328 | goto err; | |
329 | } | |
330 | if (!EC_POINT_is_at_infinity(eckey->group, point)) { | |
331 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
332 | goto err; | |
333 | } | |
334 | /* | |
335 | * in case the priv_key is present : check if generator * priv_key == | |
336 | * pub_key | |
337 | */ | |
91e7bcc2 | 338 | if (eckey->priv_key != NULL) { |
0f113f3e MC |
339 | if (BN_cmp(eckey->priv_key, order) >= 0) { |
340 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
341 | goto err; | |
342 | } | |
343 | if (!EC_POINT_mul(eckey->group, point, eckey->priv_key, | |
344 | NULL, NULL, ctx)) { | |
345 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
346 | goto err; | |
347 | } | |
348 | if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) { | |
349 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY); | |
350 | goto err; | |
351 | } | |
352 | } | |
353 | ok = 1; | |
354 | err: | |
23a1d5e9 | 355 | BN_CTX_free(ctx); |
8fdc3734 | 356 | EC_POINT_free(point); |
0f113f3e MC |
357 | return (ok); |
358 | } | |
359 | ||
360 | int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, | |
361 | BIGNUM *y) | |
362 | { | |
363 | BN_CTX *ctx = NULL; | |
364 | BIGNUM *tx, *ty; | |
365 | EC_POINT *point = NULL; | |
8d11b7c7 MC |
366 | int ok = 0; |
367 | #ifndef OPENSSL_NO_EC2M | |
368 | int tmp_nid, is_char_two = 0; | |
369 | #endif | |
0f113f3e | 370 | |
91e7bcc2 | 371 | if (key == NULL || key->group == NULL || x == NULL || y == NULL) { |
0f113f3e MC |
372 | ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES, |
373 | ERR_R_PASSED_NULL_PARAMETER); | |
374 | return 0; | |
375 | } | |
376 | ctx = BN_CTX_new(); | |
90945fa3 | 377 | if (ctx == NULL) |
0f113f3e MC |
378 | goto err; |
379 | ||
380 | point = EC_POINT_new(key->group); | |
381 | ||
90945fa3 | 382 | if (point == NULL) |
0f113f3e MC |
383 | goto err; |
384 | ||
8d11b7c7 MC |
385 | tx = BN_CTX_get(ctx); |
386 | ty = BN_CTX_get(ctx); | |
387 | ||
388 | #ifndef OPENSSL_NO_EC2M | |
0f113f3e MC |
389 | tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group)); |
390 | ||
391 | if (tmp_nid == NID_X9_62_characteristic_two_field) | |
392 | is_char_two = 1; | |
393 | ||
0f113f3e MC |
394 | if (is_char_two) { |
395 | if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point, | |
396 | x, y, ctx)) | |
397 | goto err; | |
398 | if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point, | |
399 | tx, ty, ctx)) | |
400 | goto err; | |
401 | } else | |
b3310161 | 402 | #endif |
0f113f3e MC |
403 | { |
404 | if (!EC_POINT_set_affine_coordinates_GFp(key->group, point, | |
405 | x, y, ctx)) | |
406 | goto err; | |
407 | if (!EC_POINT_get_affine_coordinates_GFp(key->group, point, | |
408 | tx, ty, ctx)) | |
409 | goto err; | |
410 | } | |
411 | /* | |
412 | * Check if retrieved coordinates match originals and are less than field | |
413 | * order: if not values are out of range. | |
414 | */ | |
415 | if (BN_cmp(x, tx) || BN_cmp(y, ty) | |
416 | || (BN_cmp(x, key->group->field) >= 0) | |
417 | || (BN_cmp(y, key->group->field) >= 0)) { | |
418 | ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES, | |
419 | EC_R_COORDINATES_OUT_OF_RANGE); | |
420 | goto err; | |
421 | } | |
422 | ||
423 | if (!EC_KEY_set_public_key(key, point)) | |
424 | goto err; | |
425 | ||
426 | if (EC_KEY_check_key(key) == 0) | |
427 | goto err; | |
428 | ||
429 | ok = 1; | |
430 | ||
431 | err: | |
23a1d5e9 | 432 | BN_CTX_free(ctx); |
8fdc3734 | 433 | EC_POINT_free(point); |
0f113f3e MC |
434 | return ok; |
435 | ||
436 | } | |
fef1c40b | 437 | |
9dd84053 | 438 | const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key) |
0f113f3e MC |
439 | { |
440 | return key->group; | |
441 | } | |
9dd84053 NL |
442 | |
443 | int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group) | |
0f113f3e | 444 | { |
91e7bcc2 | 445 | if (key->meth->set_group != NULL && key->meth->set_group(key, group) == 0) |
3475bc96 | 446 | return 0; |
8fdc3734 | 447 | EC_GROUP_free(key->group); |
0f113f3e MC |
448 | key->group = EC_GROUP_dup(group); |
449 | return (key->group == NULL) ? 0 : 1; | |
450 | } | |
9dd84053 NL |
451 | |
452 | const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key) | |
0f113f3e MC |
453 | { |
454 | return key->priv_key; | |
455 | } | |
9dd84053 NL |
456 | |
457 | int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key) | |
0f113f3e | 458 | { |
91e7bcc2 DSH |
459 | if (key->meth->set_private != NULL |
460 | && key->meth->set_private(key, priv_key) == 0) | |
3475bc96 | 461 | return 0; |
23a1d5e9 | 462 | BN_clear_free(key->priv_key); |
0f113f3e MC |
463 | key->priv_key = BN_dup(priv_key); |
464 | return (key->priv_key == NULL) ? 0 : 1; | |
465 | } | |
9dd84053 NL |
466 | |
467 | const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key) | |
0f113f3e MC |
468 | { |
469 | return key->pub_key; | |
470 | } | |
9dd84053 NL |
471 | |
472 | int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key) | |
0f113f3e | 473 | { |
91e7bcc2 DSH |
474 | if (key->meth->set_public != NULL |
475 | && key->meth->set_public(key, pub_key) == 0) | |
3475bc96 | 476 | return 0; |
8fdc3734 | 477 | EC_POINT_free(key->pub_key); |
0f113f3e MC |
478 | key->pub_key = EC_POINT_dup(pub_key, key->group); |
479 | return (key->pub_key == NULL) ? 0 : 1; | |
480 | } | |
9dd84053 NL |
481 | |
482 | unsigned int EC_KEY_get_enc_flags(const EC_KEY *key) | |
0f113f3e MC |
483 | { |
484 | return key->enc_flag; | |
485 | } | |
9dd84053 NL |
486 | |
487 | void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags) | |
0f113f3e MC |
488 | { |
489 | key->enc_flag = flags; | |
490 | } | |
9dd84053 NL |
491 | |
492 | point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key) | |
0f113f3e MC |
493 | { |
494 | return key->conv_form; | |
495 | } | |
9dd84053 NL |
496 | |
497 | void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform) | |
0f113f3e MC |
498 | { |
499 | key->conv_form = cform; | |
500 | if (key->group != NULL) | |
501 | EC_GROUP_set_point_conversion_form(key->group, cform); | |
502 | } | |
9dd84053 | 503 | |
9dd84053 | 504 | void EC_KEY_set_asn1_flag(EC_KEY *key, int flag) |
0f113f3e MC |
505 | { |
506 | if (key->group != NULL) | |
507 | EC_GROUP_set_asn1_flag(key->group, flag); | |
508 | } | |
9dd84053 NL |
509 | |
510 | int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx) | |
0f113f3e MC |
511 | { |
512 | if (key->group == NULL) | |
513 | return 0; | |
514 | return EC_GROUP_precompute_mult(key->group, ctx); | |
515 | } | |
cac4fb58 DSH |
516 | |
517 | int EC_KEY_get_flags(const EC_KEY *key) | |
0f113f3e MC |
518 | { |
519 | return key->flags; | |
520 | } | |
cac4fb58 DSH |
521 | |
522 | void EC_KEY_set_flags(EC_KEY *key, int flags) | |
0f113f3e MC |
523 | { |
524 | key->flags |= flags; | |
525 | } | |
cac4fb58 DSH |
526 | |
527 | void EC_KEY_clear_flags(EC_KEY *key, int flags) | |
0f113f3e MC |
528 | { |
529 | key->flags &= ~flags; | |
530 | } | |
981bd8a2 DSH |
531 | |
532 | size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form, | |
533 | unsigned char **pbuf, BN_CTX *ctx) | |
534 | { | |
535 | if (key == NULL || key->pub_key == NULL || key->group == NULL) | |
536 | return 0; | |
537 | return EC_POINT_point2buf(key->group, key->pub_key, form, pbuf, ctx); | |
538 | } | |
539 | ||
540 | int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len, | |
541 | BN_CTX *ctx) | |
542 | { | |
543 | if (key == NULL || key->group == NULL) | |
544 | return 0; | |
545 | if (key->pub_key == NULL) | |
546 | key->pub_key = EC_POINT_new(key->group); | |
547 | if (key->pub_key == NULL) | |
548 | return 0; | |
549 | return EC_POINT_oct2point(key->group, key->pub_key, buf, len, ctx); | |
550 | } |