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Commit | Line | Data |
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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> | |
68 | ||
69 | EC_KEY *EC_KEY_new(void) | |
0f113f3e | 70 | { |
28572b57 | 71 | return EC_KEY_new_method(NULL); |
0f113f3e | 72 | } |
14a7cfb3 | 73 | |
9dd84053 | 74 | EC_KEY *EC_KEY_new_by_curve_name(int nid) |
0f113f3e MC |
75 | { |
76 | EC_KEY *ret = EC_KEY_new(); | |
77 | if (ret == NULL) | |
78 | return NULL; | |
79 | ret->group = EC_GROUP_new_by_curve_name(nid); | |
80 | if (ret->group == NULL) { | |
81 | EC_KEY_free(ret); | |
82 | return NULL; | |
83 | } | |
84 | return ret; | |
85 | } | |
14a7cfb3 BM |
86 | |
87 | void EC_KEY_free(EC_KEY *r) | |
0f113f3e MC |
88 | { |
89 | int i; | |
14a7cfb3 | 90 | |
0f113f3e MC |
91 | if (r == NULL) |
92 | return; | |
14a7cfb3 | 93 | |
0f113f3e | 94 | i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC); |
14a7cfb3 | 95 | #ifdef REF_PRINT |
0f113f3e | 96 | REF_PRINT("EC_KEY", r); |
14a7cfb3 | 97 | #endif |
0f113f3e MC |
98 | if (i > 0) |
99 | return; | |
14a7cfb3 | 100 | #ifdef REF_CHECK |
0f113f3e MC |
101 | if (i < 0) { |
102 | fprintf(stderr, "EC_KEY_free, bad reference count\n"); | |
103 | abort(); | |
104 | } | |
14a7cfb3 BM |
105 | #endif |
106 | ||
8fdc3734 RS |
107 | EC_GROUP_free(r->group); |
108 | EC_POINT_free(r->pub_key); | |
23a1d5e9 | 109 | BN_clear_free(r->priv_key); |
14a7cfb3 | 110 | |
0f113f3e | 111 | EC_EX_DATA_free_all_data(&r->method_data); |
14a7cfb3 | 112 | |
4b45c6e5 | 113 | OPENSSL_clear_free((void *)r, sizeof(EC_KEY)); |
0f113f3e | 114 | } |
14a7cfb3 BM |
115 | |
116 | EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src) | |
0f113f3e MC |
117 | { |
118 | EC_EXTRA_DATA *d; | |
119 | ||
120 | if (dest == NULL || src == NULL) { | |
121 | ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER); | |
122 | return NULL; | |
123 | } | |
124 | /* copy the parameters */ | |
125 | if (src->group) { | |
126 | const EC_METHOD *meth = EC_GROUP_method_of(src->group); | |
127 | /* clear the old group */ | |
8fdc3734 | 128 | EC_GROUP_free(dest->group); |
0f113f3e MC |
129 | dest->group = EC_GROUP_new(meth); |
130 | if (dest->group == NULL) | |
131 | return NULL; | |
132 | if (!EC_GROUP_copy(dest->group, src->group)) | |
133 | return NULL; | |
134 | } | |
135 | /* copy the public key */ | |
136 | if (src->pub_key && src->group) { | |
8fdc3734 | 137 | EC_POINT_free(dest->pub_key); |
0f113f3e MC |
138 | dest->pub_key = EC_POINT_new(src->group); |
139 | if (dest->pub_key == NULL) | |
140 | return NULL; | |
141 | if (!EC_POINT_copy(dest->pub_key, src->pub_key)) | |
142 | return NULL; | |
143 | } | |
144 | /* copy the private key */ | |
145 | if (src->priv_key) { | |
146 | if (dest->priv_key == NULL) { | |
147 | dest->priv_key = BN_new(); | |
148 | if (dest->priv_key == NULL) | |
149 | return NULL; | |
150 | } | |
151 | if (!BN_copy(dest->priv_key, src->priv_key)) | |
152 | return NULL; | |
153 | } | |
154 | /* copy method/extra data */ | |
155 | EC_EX_DATA_free_all_data(&dest->method_data); | |
156 | ||
157 | for (d = src->method_data; d != NULL; d = d->next) { | |
158 | void *t = d->dup_func(d->data); | |
159 | ||
160 | if (t == NULL) | |
161 | return 0; | |
162 | if (!EC_EX_DATA_set_data | |
163 | (&dest->method_data, t, d->dup_func, d->free_func, | |
164 | d->clear_free_func)) | |
165 | return 0; | |
166 | } | |
167 | ||
168 | /* copy the rest */ | |
169 | dest->enc_flag = src->enc_flag; | |
170 | dest->conv_form = src->conv_form; | |
171 | dest->version = src->version; | |
172 | dest->flags = src->flags; | |
173 | ||
174 | return dest; | |
175 | } | |
14a7cfb3 | 176 | |
87120097 | 177 | EC_KEY *EC_KEY_dup(const EC_KEY *ec_key) |
0f113f3e MC |
178 | { |
179 | EC_KEY *ret = EC_KEY_new(); | |
180 | if (ret == NULL) | |
181 | return NULL; | |
182 | if (EC_KEY_copy(ret, ec_key) == NULL) { | |
183 | EC_KEY_free(ret); | |
184 | return NULL; | |
185 | } | |
186 | return ret; | |
187 | } | |
14a7cfb3 | 188 | |
e172d60d | 189 | int EC_KEY_up_ref(EC_KEY *r) |
0f113f3e MC |
190 | { |
191 | int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC); | |
e172d60d | 192 | #ifdef REF_PRINT |
0f113f3e | 193 | REF_PRINT("EC_KEY", r); |
e172d60d BM |
194 | #endif |
195 | #ifdef REF_CHECK | |
0f113f3e MC |
196 | if (i < 2) { |
197 | fprintf(stderr, "EC_KEY_up, bad reference count\n"); | |
198 | abort(); | |
199 | } | |
e172d60d | 200 | #endif |
0f113f3e MC |
201 | return ((i > 1) ? 1 : 0); |
202 | } | |
e172d60d | 203 | |
14a7cfb3 | 204 | int EC_KEY_generate_key(EC_KEY *eckey) |
0f113f3e MC |
205 | { |
206 | int ok = 0; | |
207 | BN_CTX *ctx = NULL; | |
208 | BIGNUM *priv_key = NULL, *order = NULL; | |
209 | EC_POINT *pub_key = NULL; | |
210 | ||
211 | if (!eckey || !eckey->group) { | |
212 | ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | if ((order = BN_new()) == NULL) | |
217 | goto err; | |
218 | if ((ctx = BN_CTX_new()) == NULL) | |
219 | goto err; | |
220 | ||
221 | if (eckey->priv_key == NULL) { | |
222 | priv_key = BN_new(); | |
223 | if (priv_key == NULL) | |
224 | goto err; | |
225 | } else | |
226 | priv_key = eckey->priv_key; | |
227 | ||
228 | if (!EC_GROUP_get_order(eckey->group, order, ctx)) | |
229 | goto err; | |
230 | ||
231 | do | |
232 | if (!BN_rand_range(priv_key, order)) | |
233 | goto err; | |
234 | while (BN_is_zero(priv_key)) ; | |
235 | ||
236 | if (eckey->pub_key == NULL) { | |
237 | pub_key = EC_POINT_new(eckey->group); | |
238 | if (pub_key == NULL) | |
239 | goto err; | |
240 | } else | |
241 | pub_key = eckey->pub_key; | |
242 | ||
243 | if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx)) | |
244 | goto err; | |
245 | ||
246 | eckey->priv_key = priv_key; | |
247 | eckey->pub_key = pub_key; | |
248 | ||
249 | ok = 1; | |
250 | ||
251 | err: | |
23a1d5e9 | 252 | BN_free(order); |
8fdc3734 | 253 | if (eckey->pub_key == NULL) |
0f113f3e | 254 | EC_POINT_free(pub_key); |
23a1d5e9 | 255 | if (eckey->priv_key != priv_key) |
0f113f3e | 256 | BN_free(priv_key); |
23a1d5e9 | 257 | BN_CTX_free(ctx); |
0f113f3e MC |
258 | return (ok); |
259 | } | |
14a7cfb3 BM |
260 | |
261 | int EC_KEY_check_key(const EC_KEY *eckey) | |
0f113f3e MC |
262 | { |
263 | int ok = 0; | |
264 | BN_CTX *ctx = NULL; | |
265 | const BIGNUM *order = NULL; | |
266 | EC_POINT *point = NULL; | |
267 | ||
268 | if (!eckey || !eckey->group || !eckey->pub_key) { | |
269 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) { | |
274 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY); | |
275 | goto err; | |
276 | } | |
277 | ||
278 | if ((ctx = BN_CTX_new()) == NULL) | |
279 | goto err; | |
280 | if ((point = EC_POINT_new(eckey->group)) == NULL) | |
281 | goto err; | |
282 | ||
283 | /* testing whether the pub_key is on the elliptic curve */ | |
68886be7 | 284 | if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) { |
0f113f3e MC |
285 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE); |
286 | goto err; | |
287 | } | |
288 | /* testing whether pub_key * order is the point at infinity */ | |
289 | order = eckey->group->order; | |
290 | if (BN_is_zero(order)) { | |
291 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER); | |
292 | goto err; | |
293 | } | |
294 | if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) { | |
295 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
296 | goto err; | |
297 | } | |
298 | if (!EC_POINT_is_at_infinity(eckey->group, point)) { | |
299 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
300 | goto err; | |
301 | } | |
302 | /* | |
303 | * in case the priv_key is present : check if generator * priv_key == | |
304 | * pub_key | |
305 | */ | |
306 | if (eckey->priv_key) { | |
307 | if (BN_cmp(eckey->priv_key, order) >= 0) { | |
308 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER); | |
309 | goto err; | |
310 | } | |
311 | if (!EC_POINT_mul(eckey->group, point, eckey->priv_key, | |
312 | NULL, NULL, ctx)) { | |
313 | ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB); | |
314 | goto err; | |
315 | } | |
316 | if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) { | |
317 | ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY); | |
318 | goto err; | |
319 | } | |
320 | } | |
321 | ok = 1; | |
322 | err: | |
23a1d5e9 | 323 | BN_CTX_free(ctx); |
8fdc3734 | 324 | EC_POINT_free(point); |
0f113f3e MC |
325 | return (ok); |
326 | } | |
327 | ||
328 | int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, | |
329 | BIGNUM *y) | |
330 | { | |
331 | BN_CTX *ctx = NULL; | |
332 | BIGNUM *tx, *ty; | |
333 | EC_POINT *point = NULL; | |
8d11b7c7 MC |
334 | int ok = 0; |
335 | #ifndef OPENSSL_NO_EC2M | |
336 | int tmp_nid, is_char_two = 0; | |
337 | #endif | |
0f113f3e MC |
338 | |
339 | if (!key || !key->group || !x || !y) { | |
340 | ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES, | |
341 | ERR_R_PASSED_NULL_PARAMETER); | |
342 | return 0; | |
343 | } | |
344 | ctx = BN_CTX_new(); | |
90945fa3 | 345 | if (ctx == NULL) |
0f113f3e MC |
346 | goto err; |
347 | ||
348 | point = EC_POINT_new(key->group); | |
349 | ||
90945fa3 | 350 | if (point == NULL) |
0f113f3e MC |
351 | goto err; |
352 | ||
8d11b7c7 MC |
353 | tx = BN_CTX_get(ctx); |
354 | ty = BN_CTX_get(ctx); | |
355 | ||
356 | #ifndef OPENSSL_NO_EC2M | |
0f113f3e MC |
357 | tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group)); |
358 | ||
359 | if (tmp_nid == NID_X9_62_characteristic_two_field) | |
360 | is_char_two = 1; | |
361 | ||
0f113f3e MC |
362 | if (is_char_two) { |
363 | if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point, | |
364 | x, y, ctx)) | |
365 | goto err; | |
366 | if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point, | |
367 | tx, ty, ctx)) | |
368 | goto err; | |
369 | } else | |
b3310161 | 370 | #endif |
0f113f3e MC |
371 | { |
372 | if (!EC_POINT_set_affine_coordinates_GFp(key->group, point, | |
373 | x, y, ctx)) | |
374 | goto err; | |
375 | if (!EC_POINT_get_affine_coordinates_GFp(key->group, point, | |
376 | tx, ty, ctx)) | |
377 | goto err; | |
378 | } | |
379 | /* | |
380 | * Check if retrieved coordinates match originals and are less than field | |
381 | * order: if not values are out of range. | |
382 | */ | |
383 | if (BN_cmp(x, tx) || BN_cmp(y, ty) | |
384 | || (BN_cmp(x, key->group->field) >= 0) | |
385 | || (BN_cmp(y, key->group->field) >= 0)) { | |
386 | ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES, | |
387 | EC_R_COORDINATES_OUT_OF_RANGE); | |
388 | goto err; | |
389 | } | |
390 | ||
391 | if (!EC_KEY_set_public_key(key, point)) | |
392 | goto err; | |
393 | ||
394 | if (EC_KEY_check_key(key) == 0) | |
395 | goto err; | |
396 | ||
397 | ok = 1; | |
398 | ||
399 | err: | |
23a1d5e9 | 400 | BN_CTX_free(ctx); |
8fdc3734 | 401 | EC_POINT_free(point); |
0f113f3e MC |
402 | return ok; |
403 | ||
404 | } | |
fef1c40b | 405 | |
9dd84053 | 406 | const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key) |
0f113f3e MC |
407 | { |
408 | return key->group; | |
409 | } | |
9dd84053 NL |
410 | |
411 | int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group) | |
0f113f3e | 412 | { |
8fdc3734 | 413 | EC_GROUP_free(key->group); |
0f113f3e MC |
414 | key->group = EC_GROUP_dup(group); |
415 | return (key->group == NULL) ? 0 : 1; | |
416 | } | |
9dd84053 NL |
417 | |
418 | const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key) | |
0f113f3e MC |
419 | { |
420 | return key->priv_key; | |
421 | } | |
9dd84053 NL |
422 | |
423 | int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key) | |
0f113f3e | 424 | { |
23a1d5e9 | 425 | BN_clear_free(key->priv_key); |
0f113f3e MC |
426 | key->priv_key = BN_dup(priv_key); |
427 | return (key->priv_key == NULL) ? 0 : 1; | |
428 | } | |
9dd84053 NL |
429 | |
430 | const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key) | |
0f113f3e MC |
431 | { |
432 | return key->pub_key; | |
433 | } | |
9dd84053 NL |
434 | |
435 | int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key) | |
0f113f3e | 436 | { |
8fdc3734 | 437 | EC_POINT_free(key->pub_key); |
0f113f3e MC |
438 | key->pub_key = EC_POINT_dup(pub_key, key->group); |
439 | return (key->pub_key == NULL) ? 0 : 1; | |
440 | } | |
9dd84053 NL |
441 | |
442 | unsigned int EC_KEY_get_enc_flags(const EC_KEY *key) | |
0f113f3e MC |
443 | { |
444 | return key->enc_flag; | |
445 | } | |
9dd84053 NL |
446 | |
447 | void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags) | |
0f113f3e MC |
448 | { |
449 | key->enc_flag = flags; | |
450 | } | |
9dd84053 NL |
451 | |
452 | point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key) | |
0f113f3e MC |
453 | { |
454 | return key->conv_form; | |
455 | } | |
9dd84053 NL |
456 | |
457 | void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform) | |
0f113f3e MC |
458 | { |
459 | key->conv_form = cform; | |
460 | if (key->group != NULL) | |
461 | EC_GROUP_set_point_conversion_form(key->group, cform); | |
462 | } | |
9dd84053 NL |
463 | |
464 | void *EC_KEY_get_key_method_data(EC_KEY *key, | |
0f113f3e MC |
465 | void *(*dup_func) (void *), |
466 | void (*free_func) (void *), | |
467 | void (*clear_free_func) (void *)) | |
468 | { | |
469 | void *ret; | |
f11d0c79 | 470 | |
0f113f3e MC |
471 | CRYPTO_r_lock(CRYPTO_LOCK_EC); |
472 | ret = | |
473 | EC_EX_DATA_get_data(key->method_data, dup_func, free_func, | |
474 | clear_free_func); | |
475 | CRYPTO_r_unlock(CRYPTO_LOCK_EC); | |
f11d0c79 | 476 | |
0f113f3e MC |
477 | return ret; |
478 | } | |
9dd84053 | 479 | |
f11d0c79 | 480 | void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data, |
0f113f3e MC |
481 | void *(*dup_func) (void *), |
482 | void (*free_func) (void *), | |
483 | void (*clear_free_func) (void *)) | |
484 | { | |
485 | EC_EXTRA_DATA *ex_data; | |
486 | ||
487 | CRYPTO_w_lock(CRYPTO_LOCK_EC); | |
488 | ex_data = | |
489 | EC_EX_DATA_get_data(key->method_data, dup_func, free_func, | |
490 | clear_free_func); | |
491 | if (ex_data == NULL) | |
492 | EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, | |
493 | clear_free_func); | |
494 | CRYPTO_w_unlock(CRYPTO_LOCK_EC); | |
495 | ||
496 | return ex_data; | |
497 | } | |
9dd84053 NL |
498 | |
499 | void EC_KEY_set_asn1_flag(EC_KEY *key, int flag) | |
0f113f3e MC |
500 | { |
501 | if (key->group != NULL) | |
502 | EC_GROUP_set_asn1_flag(key->group, flag); | |
503 | } | |
9dd84053 NL |
504 | |
505 | int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx) | |
0f113f3e MC |
506 | { |
507 | if (key->group == NULL) | |
508 | return 0; | |
509 | return EC_GROUP_precompute_mult(key->group, ctx); | |
510 | } | |
cac4fb58 DSH |
511 | |
512 | int EC_KEY_get_flags(const EC_KEY *key) | |
0f113f3e MC |
513 | { |
514 | return key->flags; | |
515 | } | |
cac4fb58 DSH |
516 | |
517 | void EC_KEY_set_flags(EC_KEY *key, int flags) | |
0f113f3e MC |
518 | { |
519 | key->flags |= flags; | |
520 | } | |
cac4fb58 DSH |
521 | |
522 | void EC_KEY_clear_flags(EC_KEY *key, int flags) | |
0f113f3e MC |
523 | { |
524 | key->flags &= ~flags; | |
525 | } |