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Commit | Line | Data |
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14a7cfb3 BM |
1 | /* |
2 | * Written by Nils Larsch for the OpenSSL project. | |
3 | */ | |
4 | /* ==================================================================== | |
9dd84053 | 5 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
14a7cfb3 BM |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 12 | * notice, this list of conditions and the following disclaimer. |
14a7cfb3 BM |
13 | * |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * | |
19 | * 3. All advertising materials mentioning features or use of this | |
20 | * software must display the following acknowledgment: | |
21 | * "This product includes software developed by the OpenSSL Project | |
22 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
23 | * | |
24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
25 | * endorse or promote products derived from this software without | |
26 | * prior written permission. For written permission, please contact | |
27 | * openssl-core@openssl.org. | |
28 | * | |
29 | * 5. Products derived from this software may not be called "OpenSSL" | |
30 | * nor may "OpenSSL" appear in their names without prior written | |
31 | * permission of the OpenSSL Project. | |
32 | * | |
33 | * 6. Redistributions of any form whatsoever must retain the following | |
34 | * acknowledgment: | |
35 | * "This product includes software developed by the OpenSSL Project | |
36 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
37 | * | |
38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
49 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
50 | * ==================================================================== | |
51 | * | |
52 | * This product includes cryptographic software written by Eric Young | |
53 | * (eay@cryptsoft.com). This product includes software written by Tim | |
54 | * Hudson (tjh@cryptsoft.com). | |
55 | * | |
56 | */ | |
e172d60d BM |
57 | /* ==================================================================== |
58 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
0f113f3e | 59 | * Portions originally developed by SUN MICROSYSTEMS, INC., and |
e172d60d BM |
60 | * contributed to the OpenSSL project. |
61 | */ | |
14a7cfb3 | 62 | |
984d6c60 | 63 | #include <internal/cryptlib.h> |
5454829a | 64 | #include <string.h> |
14a7cfb3 BM |
65 | #include "ec_lcl.h" |
66 | #include <openssl/err.h> | |
33bed28b | 67 | #ifndef OPENSSL_NO_ENGINE |
51966416 DSH |
68 | # include <openssl/engine.h> |
69 | #endif | |
14a7cfb3 BM |
70 | |
71 | EC_KEY *EC_KEY_new(void) | |
0f113f3e | 72 | { |
28572b57 | 73 | return EC_KEY_new_method(NULL); |
0f113f3e | 74 | } |
14a7cfb3 | 75 | |
9dd84053 | 76 | EC_KEY *EC_KEY_new_by_curve_name(int nid) |
0f113f3e MC |
77 | { |
78 | EC_KEY *ret = EC_KEY_new(); | |
79 | if (ret == NULL) | |
80 | return NULL; | |
81 | ret->group = EC_GROUP_new_by_curve_name(nid); | |
82 | if (ret->group == NULL) { | |
83 | EC_KEY_free(ret); | |
84 | return NULL; | |
85 | } | |
91e7bcc2 DSH |
86 | if (ret->meth->set_group != NULL |
87 | && ret->meth->set_group(ret, ret->group) == 0) { | |
3475bc96 DSH |
88 | EC_KEY_free(ret); |
89 | return NULL; | |
90 | } | |
0f113f3e MC |
91 | return ret; |
92 | } | |
14a7cfb3 BM |
93 | |
94 | void EC_KEY_free(EC_KEY *r) | |
0f113f3e MC |
95 | { |
96 | int i; | |
14a7cfb3 | 97 | |
0f113f3e MC |
98 | if (r == NULL) |
99 | return; | |
14a7cfb3 | 100 | |
0f113f3e | 101 | i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC); |
14a7cfb3 | 102 | #ifdef REF_PRINT |
0f113f3e | 103 | REF_PRINT("EC_KEY", r); |
14a7cfb3 | 104 | #endif |
0f113f3e MC |
105 | if (i > 0) |
106 | return; | |
14a7cfb3 | 107 | #ifdef REF_CHECK |
0f113f3e MC |
108 | if (i < 0) { |
109 | fprintf(stderr, "EC_KEY_free, bad reference count\n"); | |
110 | abort(); | |
111 | } | |
14a7cfb3 BM |
112 | #endif |
113 | ||
91e7bcc2 | 114 | if (r->meth->finish != NULL) |
0d6ff6d3 DSH |
115 | r->meth->finish(r); |
116 | ||
51966416 | 117 | #ifndef OPENSSL_NO_ENGINE |
91e7bcc2 | 118 | if (r->engine != NULL) |
51966416 DSH |
119 | ENGINE_finish(r->engine); |
120 | #endif | |
121 | ||
3aef36ff | 122 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, r, &r->ex_data); |
8fdc3734 RS |
123 | EC_GROUP_free(r->group); |
124 | EC_POINT_free(r->pub_key); | |
23a1d5e9 | 125 | BN_clear_free(r->priv_key); |
14a7cfb3 | 126 | |
4b45c6e5 | 127 | OPENSSL_clear_free((void *)r, sizeof(EC_KEY)); |
0f113f3e | 128 | } |
14a7cfb3 | 129 | |
3aef36ff | 130 | EC_KEY *EC_KEY_copy(EC_KEY *dest, EC_KEY *src) |
0f113f3e | 131 | { |
0f113f3e MC |
132 | if (dest == NULL || src == NULL) { |
133 | ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER); | |
134 | return NULL; | |
135 | } | |
ea0392b9 | 136 | if (src->meth != dest->meth) { |
91e7bcc2 | 137 | if (dest->meth->finish != NULL) |
ea0392b9 DSH |
138 | dest->meth->finish(dest); |
139 | #ifndef OPENSSL_NO_ENGINE | |
91e7bcc2 | 140 | if (dest->engine != NULL && ENGINE_finish(dest->engine) == 0) |
ea0392b9 DSH |
141 | return 0; |
142 | dest->engine = NULL; | |
143 | #endif | |
144 | } | |
0f113f3e | 145 | /* copy the parameters */ |
91e7bcc2 | 146 | if (src->group != NULL) { |
0f113f3e MC |
147 | const EC_METHOD *meth = EC_GROUP_method_of(src->group); |
148 | /* clear the old group */ | |
8fdc3734 | 149 | EC_GROUP_free(dest->group); |
0f113f3e MC |
150 | dest->group = EC_GROUP_new(meth); |
151 | if (dest->group == NULL) | |
152 | return NULL; | |
153 | if (!EC_GROUP_copy(dest->group, src->group)) | |
154 | return NULL; | |
155 | } | |
156 | /* copy the public key */ | |
91e7bcc2 | 157 | if (src->pub_key != NULL && src->group != NULL) { |
8fdc3734 | 158 | EC_POINT_free(dest->pub_key); |
0f113f3e MC |
159 | dest->pub_key = EC_POINT_new(src->group); |
160 | if (dest->pub_key == NULL) | |
161 | return NULL; | |
162 | if (!EC_POINT_copy(dest->pub_key, src->pub_key)) | |
163 | return NULL; | |
164 | } | |
165 | /* copy the private key */ | |
91e7bcc2 | 166 | if (src->priv_key != NULL) { |
0f113f3e MC |
167 | if (dest->priv_key == NULL) { |
168 | dest->priv_key = BN_new(); | |
169 | if (dest->priv_key == NULL) | |
170 | return NULL; | |
171 | } | |
172 | if (!BN_copy(dest->priv_key, src->priv_key)) | |
173 | return NULL; | |
174 | } | |
0f113f3e MC |
175 | |
176 | /* copy the rest */ | |
177 | dest->enc_flag = src->enc_flag; | |
178 | dest->conv_form = src->conv_form; | |
179 | dest->version = src->version; | |
180 | dest->flags = src->flags; | |
3aef36ff RS |
181 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EC_KEY, |
182 | &dest->ex_data, &src->ex_data)) | |
183 | return NULL; | |
0f113f3e | 184 | |
ea0392b9 DSH |
185 | if (src->meth != dest->meth) { |
186 | #ifndef OPENSSL_NO_ENGINE | |
91e7bcc2 DSH |
187 | if (src->engine != NULL && ENGINE_init(src->engine) == 0) |
188 | return NULL; | |
ea0392b9 DSH |
189 | dest->engine = src->engine; |
190 | #endif | |
191 | dest->meth = src->meth; | |
192 | } | |
193 | ||
91e7bcc2 DSH |
194 | if (src->meth->copy != NULL && src->meth->copy(dest, src) == 0) |
195 | return NULL; | |
ea0392b9 | 196 | |
0f113f3e MC |
197 | return dest; |
198 | } | |
14a7cfb3 | 199 | |
3aef36ff | 200 | EC_KEY *EC_KEY_dup(EC_KEY *ec_key) |
0f113f3e | 201 | { |
ea0392b9 | 202 | EC_KEY *ret = EC_KEY_new_method(ec_key->engine); |
3aef36ff | 203 | |
0f113f3e MC |
204 | if (ret == NULL) |
205 | return NULL; | |
206 | if (EC_KEY_copy(ret, ec_key) == NULL) { | |
207 | EC_KEY_free(ret); | |
208 | return NULL; | |
209 | } | |
210 | return ret; | |
211 | } | |
14a7cfb3 | 212 | |
e172d60d | 213 | int EC_KEY_up_ref(EC_KEY *r) |
0f113f3e MC |
214 | { |
215 | int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC); | |
e172d60d | 216 | #ifdef REF_PRINT |
0f113f3e | 217 | REF_PRINT("EC_KEY", r); |
e172d60d BM |
218 | #endif |
219 | #ifdef REF_CHECK | |
0f113f3e MC |
220 | if (i < 2) { |
221 | fprintf(stderr, "EC_KEY_up, bad reference count\n"); | |
222 | abort(); | |
223 | } | |
e172d60d | 224 | #endif |
0f113f3e MC |
225 | return ((i > 1) ? 1 : 0); |
226 | } | |
e172d60d | 227 | |
14a7cfb3 | 228 | int EC_KEY_generate_key(EC_KEY *eckey) |
0f113f3e | 229 | { |
91e7bcc2 | 230 | if (eckey == NULL || eckey->group == NULL) { |
0f113f3e MC |
231 | ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER); |
232 | return 0; | |
233 | } | |
91e7bcc2 | 234 | if (eckey->meth->keygen != NULL) |
5a6a1029 DSH |
235 | return eckey->meth->keygen(eckey); |
236 | ECerr(EC_F_EC_KEY_GENERATE_KEY, EC_R_OPERATION_NOT_SUPPORTED); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | int ossl_ec_key_gen(EC_KEY *eckey) | |
241 | { | |
242 | int ok = 0; | |
243 | BN_CTX *ctx = NULL; | |
be2e334f DSH |
244 | BIGNUM *priv_key = NULL; |
245 | const BIGNUM *order = NULL; | |
5a6a1029 | 246 | EC_POINT *pub_key = NULL; |
0f113f3e | 247 | |
0f113f3e MC |
248 | if ((ctx = BN_CTX_new()) == NULL) |
249 | goto err; | |
250 | ||
251 | if (eckey->priv_key == NULL) { | |
252 | priv_key = BN_new(); | |
253 | if (priv_key == NULL) | |
254 | goto err; | |
255 | } else | |
256 | priv_key = eckey->priv_key; | |
257 | ||
be2e334f DSH |
258 | order = EC_GROUP_get0_order(eckey->group); |
259 | if (order == NULL) | |
0f113f3e MC |
260 | goto err; |
261 | ||
262 | do | |
263 | if (!BN_rand_range(priv_key, order)) | |
264 | goto err; | |
265 | while (BN_is_zero(priv_key)) ; | |
266 | ||
267 | if (eckey->pub_key == NULL) { | |
268 | pub_key = EC_POINT_new(eckey->group); | |
269 | if (pub_key == NULL) | |
270 | goto err; | |
271 | } else | |
272 | pub_key = eckey->pub_key; | |
273 | ||
274 | if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx)) | |
275 | goto err; | |
276 | ||
277 | eckey->priv_key = priv_key; | |
278 | eckey->pub_key = pub_key; | |
279 | ||
280 | ok = 1; | |
281 | ||
282 | err: | |
8fdc3734 | 283 | if (eckey->pub_key == NULL) |
0f113f3e | 284 | EC_POINT_free(pub_key); |
23a1d5e9 | 285 | if (eckey->priv_key != priv_key) |
0f113f3e | 286 | BN_free(priv_key); |
23a1d5e9 | 287 | BN_CTX_free(ctx); |
0f113f3e MC |
288 | return (ok); |
289 | } | |
14a7cfb3 BM |
290 | |
291 | int EC_KEY_check_key(const EC_KEY *eckey) | |
0f113f3e MC |
292 | { |
293 | int ok = 0; | |
294 | BN_CTX *ctx = NULL; | |
295 | const BIGNUM *order = NULL; | |
296 | EC_POINT *point = NULL; | |
297 | ||
91e7bcc2 | 298 | if (eckey == NULL || eckey->group == NULL || eckey->pub_key == NULL) { |
0f113f3e MC |
299 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER); |
300 | return 0; | |
301 | } | |
302 | ||
303 | if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) { | |
304 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY); | |
305 | goto err; | |
306 | } | |
307 | ||
308 | if ((ctx = BN_CTX_new()) == NULL) | |
309 | goto err; | |
310 | if ((point = EC_POINT_new(eckey->group)) == NULL) | |
311 | goto err; | |
312 | ||
313 | /* testing whether the pub_key is on the elliptic curve */ | |
68886be7 | 314 | if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) { |
0f113f3e MC |
315 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE); |
316 | goto err; | |
317 | } | |
318 | /* testing whether pub_key * order is the point at infinity */ | |
319 | order = eckey->group->order; | |
320 | if (BN_is_zero(order)) { | |
321 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER); | |
322 | goto err; | |
323 | } | |
324 | if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) { | |
325 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
326 | goto err; | |
327 | } | |
328 | if (!EC_POINT_is_at_infinity(eckey->group, point)) { | |
329 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
330 | goto err; | |
331 | } | |
332 | /* | |
333 | * in case the priv_key is present : check if generator * priv_key == | |
334 | * pub_key | |
335 | */ | |
91e7bcc2 | 336 | if (eckey->priv_key != NULL) { |
0f113f3e MC |
337 | if (BN_cmp(eckey->priv_key, order) >= 0) { |
338 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
339 | goto err; | |
340 | } | |
341 | if (!EC_POINT_mul(eckey->group, point, eckey->priv_key, | |
342 | NULL, NULL, ctx)) { | |
343 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
344 | goto err; | |
345 | } | |
346 | if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) { | |
347 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY); | |
348 | goto err; | |
349 | } | |
350 | } | |
351 | ok = 1; | |
352 | err: | |
23a1d5e9 | 353 | BN_CTX_free(ctx); |
8fdc3734 | 354 | EC_POINT_free(point); |
0f113f3e MC |
355 | return (ok); |
356 | } | |
357 | ||
358 | int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, | |
359 | BIGNUM *y) | |
360 | { | |
361 | BN_CTX *ctx = NULL; | |
362 | BIGNUM *tx, *ty; | |
363 | EC_POINT *point = NULL; | |
8d11b7c7 MC |
364 | int ok = 0; |
365 | #ifndef OPENSSL_NO_EC2M | |
366 | int tmp_nid, is_char_two = 0; | |
367 | #endif | |
0f113f3e | 368 | |
91e7bcc2 | 369 | if (key == NULL || key->group == NULL || x == NULL || y == NULL) { |
0f113f3e MC |
370 | ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES, |
371 | ERR_R_PASSED_NULL_PARAMETER); | |
372 | return 0; | |
373 | } | |
374 | ctx = BN_CTX_new(); | |
90945fa3 | 375 | if (ctx == NULL) |
0f113f3e MC |
376 | goto err; |
377 | ||
378 | point = EC_POINT_new(key->group); | |
379 | ||
90945fa3 | 380 | if (point == NULL) |
0f113f3e MC |
381 | goto err; |
382 | ||
8d11b7c7 MC |
383 | tx = BN_CTX_get(ctx); |
384 | ty = BN_CTX_get(ctx); | |
dd67493c BB |
385 | if (ty == NULL) |
386 | goto err; | |
8d11b7c7 MC |
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 | } |