1 /*
2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3 * 2006.
4 */
5 /* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
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
13 * notice, this list of conditions and the following disclaimer.
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 * licensing@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 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/x509.h>
62 #include <openssl/ec.h>
63 #include <openssl/bn.h>
64 #ifndef OPENSSL_NO_CMS
65 # include <openssl/cms.h>
66 #endif
67 #include "asn1_locl.h"
68
eckey_param2type(int * pptype,void ** ppval,EC_KEY * ec_key)69 static int eckey_param2type(int *pptype, void **ppval, EC_KEY *ec_key)
70 {
71 const EC_GROUP *group;
72 int nid;
73 if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) {
74 ECerr(EC_F_ECKEY_PARAM2TYPE, EC_R_MISSING_PARAMETERS);
75 return 0;
76 }
77 if (EC_GROUP_get_asn1_flag(group)
78 && (nid = EC_GROUP_get_curve_name(group)))
79 /* we have a 'named curve' => just set the OID */
80 {
81 *ppval = OBJ_nid2obj(nid);
82 *pptype = V_ASN1_OBJECT;
83 } else { /* explicit parameters */
84
85 ASN1_STRING *pstr = NULL;
86 pstr = ASN1_STRING_new();
87 if (!pstr)
88 return 0;
89 pstr->length = i2d_ECParameters(ec_key, &pstr->data);
90 if (pstr->length <= 0) {
91 ASN1_STRING_free(pstr);
92 ECerr(EC_F_ECKEY_PARAM2TYPE, ERR_R_EC_LIB);
93 return 0;
94 }
95 *ppval = pstr;
96 *pptype = V_ASN1_SEQUENCE;
97 }
98 return 1;
99 }
100
eckey_pub_encode(X509_PUBKEY * pk,const EVP_PKEY * pkey)101 static int eckey_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
102 {
103 EC_KEY *ec_key = pkey->pkey.ec;
104 void *pval = NULL;
105 int ptype;
106 unsigned char *penc = NULL, *p;
107 int penclen;
108
109 if (!eckey_param2type(&ptype, &pval, ec_key)) {
110 ECerr(EC_F_ECKEY_PUB_ENCODE, ERR_R_EC_LIB);
111 return 0;
112 }
113 penclen = i2o_ECPublicKey(ec_key, NULL);
114 if (penclen <= 0)
115 goto err;
116 penc = OPENSSL_malloc(penclen);
117 if (!penc)
118 goto err;
119 p = penc;
120 penclen = i2o_ECPublicKey(ec_key, &p);
121 if (penclen <= 0)
122 goto err;
123 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC),
124 ptype, pval, penc, penclen))
125 return 1;
126 err:
127 if (ptype == V_ASN1_OBJECT)
128 ASN1_OBJECT_free(pval);
129 else
130 ASN1_STRING_free(pval);
131 if (penc)
132 OPENSSL_free(penc);
133 return 0;
134 }
135
eckey_type2param(int ptype,void * pval)136 static EC_KEY *eckey_type2param(int ptype, void *pval)
137 {
138 EC_KEY *eckey = NULL;
139 if (ptype == V_ASN1_SEQUENCE) {
140 ASN1_STRING *pstr = pval;
141 const unsigned char *pm = NULL;
142 int pmlen;
143 pm = pstr->data;
144 pmlen = pstr->length;
145 if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) {
146 ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR);
147 goto ecerr;
148 }
149 } else if (ptype == V_ASN1_OBJECT) {
150 ASN1_OBJECT *poid = pval;
151 EC_GROUP *group;
152
153 /*
154 * type == V_ASN1_OBJECT => the parameters are given by an asn1 OID
155 */
156 if ((eckey = EC_KEY_new()) == NULL) {
157 ECerr(EC_F_ECKEY_TYPE2PARAM, ERR_R_MALLOC_FAILURE);
158 goto ecerr;
159 }
160 group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(poid));
161 if (group == NULL)
162 goto ecerr;
163 EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
164 if (EC_KEY_set_group(eckey, group) == 0)
165 goto ecerr;
166 EC_GROUP_free(group);
167 } else {
168 ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR);
169 goto ecerr;
170 }
171
172 return eckey;
173
174 ecerr:
175 if (eckey)
176 EC_KEY_free(eckey);
177 return NULL;
178 }
179
eckey_pub_decode(EVP_PKEY * pkey,X509_PUBKEY * pubkey)180 static int eckey_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
181 {
182 const unsigned char *p = NULL;
183 void *pval;
184 int ptype, pklen;
185 EC_KEY *eckey = NULL;
186 X509_ALGOR *palg;
187
188 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
189 return 0;
190 X509_ALGOR_get0(NULL, &ptype, &pval, palg);
191
192 eckey = eckey_type2param(ptype, pval);
193
194 if (!eckey) {
195 ECerr(EC_F_ECKEY_PUB_DECODE, ERR_R_EC_LIB);
196 return 0;
197 }
198
199 /* We have parameters now set public key */
200 if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
201 ECerr(EC_F_ECKEY_PUB_DECODE, EC_R_DECODE_ERROR);
202 goto ecerr;
203 }
204
205 EVP_PKEY_assign_EC_KEY(pkey, eckey);
206 return 1;
207
208 ecerr:
209 if (eckey)
210 EC_KEY_free(eckey);
211 return 0;
212 }
213
eckey_pub_cmp(const EVP_PKEY * a,const EVP_PKEY * b)214 static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
215 {
216 int r;
217 const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
218 const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
219 *pb = EC_KEY_get0_public_key(b->pkey.ec);
220 r = EC_POINT_cmp(group, pa, pb, NULL);
221 if (r == 0)
222 return 1;
223 if (r == 1)
224 return 0;
225 return -2;
226 }
227
eckey_priv_decode(EVP_PKEY * pkey,PKCS8_PRIV_KEY_INFO * p8)228 static int eckey_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
229 {
230 const unsigned char *p = NULL;
231 void *pval;
232 int ptype, pklen;
233 EC_KEY *eckey = NULL;
234 X509_ALGOR *palg;
235
236 if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
237 return 0;
238 X509_ALGOR_get0(NULL, &ptype, &pval, palg);
239
240 eckey = eckey_type2param(ptype, pval);
241
242 if (!eckey)
243 goto ecliberr;
244
245 /* We have parameters now set private key */
246 if (!d2i_ECPrivateKey(&eckey, &p, pklen)) {
247 ECerr(EC_F_ECKEY_PRIV_DECODE, EC_R_DECODE_ERROR);
248 goto ecerr;
249 }
250
251 /* calculate public key (if necessary) */
252 if (EC_KEY_get0_public_key(eckey) == NULL) {
253 const BIGNUM *priv_key;
254 const EC_GROUP *group;
255 EC_POINT *pub_key;
256 /*
257 * the public key was not included in the SEC1 private key =>
258 * calculate the public key
259 */
260 group = EC_KEY_get0_group(eckey);
261 pub_key = EC_POINT_new(group);
262 if (pub_key == NULL) {
263 ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
264 goto ecliberr;
265 }
266 if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) {
267 EC_POINT_free(pub_key);
268 ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
269 goto ecliberr;
270 }
271 priv_key = EC_KEY_get0_private_key(eckey);
272 if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)) {
273 EC_POINT_free(pub_key);
274 ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
275 goto ecliberr;
276 }
277 if (EC_KEY_set_public_key(eckey, pub_key) == 0) {
278 EC_POINT_free(pub_key);
279 ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
280 goto ecliberr;
281 }
282 EC_POINT_free(pub_key);
283 }
284
285 EVP_PKEY_assign_EC_KEY(pkey, eckey);
286 return 1;
287
288 ecliberr:
289 ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
290 ecerr:
291 if (eckey)
292 EC_KEY_free(eckey);
293 return 0;
294 }
295
eckey_priv_encode(PKCS8_PRIV_KEY_INFO * p8,const EVP_PKEY * pkey)296 static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
297 {
298 EC_KEY *ec_key;
299 unsigned char *ep, *p;
300 int eplen, ptype;
301 void *pval;
302 unsigned int tmp_flags, old_flags;
303
304 ec_key = pkey->pkey.ec;
305
306 if (!eckey_param2type(&ptype, &pval, ec_key)) {
307 ECerr(EC_F_ECKEY_PRIV_ENCODE, EC_R_DECODE_ERROR);
308 return 0;
309 }
310
311 /* set the private key */
312
313 /*
314 * do not include the parameters in the SEC1 private key see PKCS#11
315 * 12.11
316 */
317 old_flags = EC_KEY_get_enc_flags(ec_key);
318 tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS;
319 EC_KEY_set_enc_flags(ec_key, tmp_flags);
320 eplen = i2d_ECPrivateKey(ec_key, NULL);
321 if (!eplen) {
322 EC_KEY_set_enc_flags(ec_key, old_flags);
323 ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB);
324 return 0;
325 }
326 ep = (unsigned char *)OPENSSL_malloc(eplen);
327 if (!ep) {
328 EC_KEY_set_enc_flags(ec_key, old_flags);
329 ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
330 return 0;
331 }
332 p = ep;
333 if (!i2d_ECPrivateKey(ec_key, &p)) {
334 EC_KEY_set_enc_flags(ec_key, old_flags);
335 OPENSSL_free(ep);
336 ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB);
337 return 0;
338 }
339 /* restore old encoding flags */
340 EC_KEY_set_enc_flags(ec_key, old_flags);
341
342 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0,
343 ptype, pval, ep, eplen))
344 return 0;
345
346 return 1;
347 }
348
int_ec_size(const EVP_PKEY * pkey)349 static int int_ec_size(const EVP_PKEY *pkey)
350 {
351 return ECDSA_size(pkey->pkey.ec);
352 }
353
ec_bits(const EVP_PKEY * pkey)354 static int ec_bits(const EVP_PKEY *pkey)
355 {
356 BIGNUM *order = BN_new();
357 const EC_GROUP *group;
358 int ret;
359
360 if (!order) {
361 ERR_clear_error();
362 return 0;
363 }
364 group = EC_KEY_get0_group(pkey->pkey.ec);
365 if (!EC_GROUP_get_order(group, order, NULL)) {
366 ERR_clear_error();
367 return 0;
368 }
369
370 ret = BN_num_bits(order);
371 BN_free(order);
372 return ret;
373 }
374
ec_missing_parameters(const EVP_PKEY * pkey)375 static int ec_missing_parameters(const EVP_PKEY *pkey)
376 {
377 if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
378 return 1;
379 return 0;
380 }
381
ec_copy_parameters(EVP_PKEY * to,const EVP_PKEY * from)382 static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
383 {
384 EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
385 if (group == NULL)
386 return 0;
387 if (EC_KEY_set_group(to->pkey.ec, group) == 0)
388 return 0;
389 EC_GROUP_free(group);
390 return 1;
391 }
392
ec_cmp_parameters(const EVP_PKEY * a,const EVP_PKEY * b)393 static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
394 {
395 const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
396 *group_b = EC_KEY_get0_group(b->pkey.ec);
397 if (EC_GROUP_cmp(group_a, group_b, NULL))
398 return 0;
399 else
400 return 1;
401 }
402
int_ec_free(EVP_PKEY * pkey)403 static void int_ec_free(EVP_PKEY *pkey)
404 {
405 EC_KEY_free(pkey->pkey.ec);
406 }
407
do_EC_KEY_print(BIO * bp,const EC_KEY * x,int off,int ktype)408 static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype)
409 {
410 unsigned char *buffer = NULL;
411 const char *ecstr;
412 size_t buf_len = 0, i;
413 int ret = 0, reason = ERR_R_BIO_LIB;
414 BIGNUM *pub_key = NULL, *order = NULL;
415 BN_CTX *ctx = NULL;
416 const EC_GROUP *group;
417 const EC_POINT *public_key;
418 const BIGNUM *priv_key;
419
420 if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
421 reason = ERR_R_PASSED_NULL_PARAMETER;
422 goto err;
423 }
424
425 ctx = BN_CTX_new();
426 if (ctx == NULL) {
427 reason = ERR_R_MALLOC_FAILURE;
428 goto err;
429 }
430
431 if (ktype > 0) {
432 public_key = EC_KEY_get0_public_key(x);
433 if (public_key != NULL) {
434 if ((pub_key = EC_POINT_point2bn(group, public_key,
435 EC_KEY_get_conv_form(x), NULL,
436 ctx)) == NULL) {
437 reason = ERR_R_EC_LIB;
438 goto err;
439 }
440 buf_len = (size_t)BN_num_bytes(pub_key);
441 }
442 }
443
444 if (ktype == 2) {
445 priv_key = EC_KEY_get0_private_key(x);
446 if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len)
447 buf_len = i;
448 } else
449 priv_key = NULL;
450
451 if (ktype > 0) {
452 buf_len += 10;
453 if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
454 reason = ERR_R_MALLOC_FAILURE;
455 goto err;
456 }
457 }
458 if (ktype == 2)
459 ecstr = "Private-Key";
460 else if (ktype == 1)
461 ecstr = "Public-Key";
462 else
463 ecstr = "ECDSA-Parameters";
464
465 if (!BIO_indent(bp, off, 128))
466 goto err;
467 if ((order = BN_new()) == NULL)
468 goto err;
469 if (!EC_GROUP_get_order(group, order, NULL))
470 goto err;
471 if (BIO_printf(bp, "%s: (%d bit)\n", ecstr, BN_num_bits(order)) <= 0)
472 goto err;
473
474 if ((priv_key != NULL) && !ASN1_bn_print(bp, "priv:", priv_key,
475 buffer, off))
476 goto err;
477 if ((pub_key != NULL) && !ASN1_bn_print(bp, "pub: ", pub_key,
478 buffer, off))
479 goto err;
480 if (!ECPKParameters_print(bp, group, off))
481 goto err;
482 ret = 1;
483 err:
484 if (!ret)
485 ECerr(EC_F_DO_EC_KEY_PRINT, reason);
486 if (pub_key)
487 BN_free(pub_key);
488 if (order)
489 BN_free(order);
490 if (ctx)
491 BN_CTX_free(ctx);
492 if (buffer != NULL)
493 OPENSSL_free(buffer);
494 return (ret);
495 }
496
eckey_param_decode(EVP_PKEY * pkey,const unsigned char ** pder,int derlen)497 static int eckey_param_decode(EVP_PKEY *pkey,
498 const unsigned char **pder, int derlen)
499 {
500 EC_KEY *eckey;
501 if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) {
502 ECerr(EC_F_ECKEY_PARAM_DECODE, ERR_R_EC_LIB);
503 return 0;
504 }
505 EVP_PKEY_assign_EC_KEY(pkey, eckey);
506 return 1;
507 }
508
eckey_param_encode(const EVP_PKEY * pkey,unsigned char ** pder)509 static int eckey_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
510 {
511 return i2d_ECParameters(pkey->pkey.ec, pder);
512 }
513
eckey_param_print(BIO * bp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * ctx)514 static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
515 ASN1_PCTX *ctx)
516 {
517 return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
518 }
519
eckey_pub_print(BIO * bp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * ctx)520 static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
521 ASN1_PCTX *ctx)
522 {
523 return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
524 }
525
eckey_priv_print(BIO * bp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * ctx)526 static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
527 ASN1_PCTX *ctx)
528 {
529 return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
530 }
531
old_ec_priv_decode(EVP_PKEY * pkey,const unsigned char ** pder,int derlen)532 static int old_ec_priv_decode(EVP_PKEY *pkey,
533 const unsigned char **pder, int derlen)
534 {
535 EC_KEY *ec;
536 if (!(ec = d2i_ECPrivateKey(NULL, pder, derlen))) {
537 ECerr(EC_F_OLD_EC_PRIV_DECODE, EC_R_DECODE_ERROR);
538 return 0;
539 }
540 EVP_PKEY_assign_EC_KEY(pkey, ec);
541 return 1;
542 }
543
old_ec_priv_encode(const EVP_PKEY * pkey,unsigned char ** pder)544 static int old_ec_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
545 {
546 return i2d_ECPrivateKey(pkey->pkey.ec, pder);
547 }
548
ec_pkey_ctrl(EVP_PKEY * pkey,int op,long arg1,void * arg2)549 static int ec_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
550 {
551 switch (op) {
552 case ASN1_PKEY_CTRL_PKCS7_SIGN:
553 if (arg1 == 0) {
554 int snid, hnid;
555 X509_ALGOR *alg1, *alg2;
556 PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
557 if (alg1 == NULL || alg1->algorithm == NULL)
558 return -1;
559 hnid = OBJ_obj2nid(alg1->algorithm);
560 if (hnid == NID_undef)
561 return -1;
562 if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
563 return -1;
564 X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
565 }
566 return 1;
567 #ifndef OPENSSL_NO_CMS
568 case ASN1_PKEY_CTRL_CMS_SIGN:
569 if (arg1 == 0) {
570 int snid, hnid;
571 X509_ALGOR *alg1, *alg2;
572 CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
573 if (alg1 == NULL || alg1->algorithm == NULL)
574 return -1;
575 hnid = OBJ_obj2nid(alg1->algorithm);
576 if (hnid == NID_undef)
577 return -1;
578 if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
579 return -1;
580 X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
581 }
582 return 1;
583 #endif
584
585 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
586 *(int *)arg2 = NID_sha1;
587 return 2;
588
589 default:
590 return -2;
591
592 }
593
594 }
595
596 const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
597 EVP_PKEY_EC,
598 EVP_PKEY_EC,
599 0,
600 "EC",
601 "OpenSSL EC algorithm",
602
603 eckey_pub_decode,
604 eckey_pub_encode,
605 eckey_pub_cmp,
606 eckey_pub_print,
607
608 eckey_priv_decode,
609 eckey_priv_encode,
610 eckey_priv_print,
611
612 int_ec_size,
613 ec_bits,
614
615 eckey_param_decode,
616 eckey_param_encode,
617 ec_missing_parameters,
618 ec_copy_parameters,
619 ec_cmp_parameters,
620 eckey_param_print,
621 0,
622
623 int_ec_free,
624 ec_pkey_ctrl,
625 old_ec_priv_decode,
626 old_ec_priv_encode
627 };
628