1 /* crypto/ecdsa/ecs_asn1.c */
2 /* ====================================================================
3 * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
58 #include <openssl/asn1.h>
59 #include <openssl/asn1t.h>
60 #include <openssl/objects.h>
62 ASN1_SEQUENCE(ECDSA_SIG) = {
63 ASN1_SIMPLE(ECDSA_SIG, r, CBIGNUM),
64 ASN1_SIMPLE(ECDSA_SIG, s, CBIGNUM)
65 } ASN1_SEQUENCE_END(ECDSA_SIG)
67 IMPLEMENT_ASN1_FUNCTIONS_const(ECDSA_SIG)
69 ASN1_SEQUENCE(X9_62_FIELDID) = {
70 ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT),
71 ASN1_SIMPLE(X9_62_FIELDID, parameters, ASN1_ANY)
72 } ASN1_SEQUENCE_END(X9_62_FIELDID)
74 DECLARE_ASN1_FUNCTIONS_const(X9_62_FIELDID)
75 DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_FIELDID, X9_62_FIELDID)
76 IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_FIELDID)
78 ASN1_SEQUENCE(X9_62_CURVE) = {
79 ASN1_SIMPLE(X9_62_CURVE, a, ASN1_OCTET_STRING),
80 ASN1_SIMPLE(X9_62_CURVE, b, ASN1_OCTET_STRING),
81 ASN1_OPT(X9_62_CURVE, seed, ASN1_BIT_STRING)
82 } ASN1_SEQUENCE_END(X9_62_CURVE)
84 DECLARE_ASN1_FUNCTIONS_const(X9_62_CURVE)
85 DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_CURVE, X9_62_CURVE)
86 IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_CURVE)
88 ASN1_SEQUENCE(X9_62_EC_PARAMETERS) = {
89 ASN1_SIMPLE(X9_62_EC_PARAMETERS, version, ASN1_INTEGER),
90 ASN1_SIMPLE(X9_62_EC_PARAMETERS, fieldID, X9_62_FIELDID),
91 ASN1_SIMPLE(X9_62_EC_PARAMETERS, curve, X9_62_CURVE),
92 ASN1_SIMPLE(X9_62_EC_PARAMETERS, base, ASN1_OCTET_STRING),
93 ASN1_SIMPLE(X9_62_EC_PARAMETERS, order, ASN1_INTEGER),
94 ASN1_SIMPLE(X9_62_EC_PARAMETERS, cofactor, ASN1_INTEGER)
95 } ASN1_SEQUENCE_END(X9_62_EC_PARAMETERS)
97 DECLARE_ASN1_FUNCTIONS_const(X9_62_EC_PARAMETERS)
98 DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_EC_PARAMETERS, X9_62_EC_PARAMETERS)
99 IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_EC_PARAMETERS)
101 ASN1_CHOICE(EC_PARAMETERS) = {
102 ASN1_SIMPLE(EC_PARAMETERS, value.named_curve, ASN1_OBJECT),
103 ASN1_SIMPLE(EC_PARAMETERS, value.parameters, X9_62_EC_PARAMETERS),
104 ASN1_SIMPLE(EC_PARAMETERS, value.implicitlyCA, ASN1_NULL)
105 } ASN1_CHOICE_END(EC_PARAMETERS)
107 DECLARE_ASN1_FUNCTIONS_const(EC_PARAMETERS)
108 DECLARE_ASN1_ENCODE_FUNCTIONS_const(EC_PARAMETERS, EC_PARAMETERS)
109 IMPLEMENT_ASN1_FUNCTIONS_const(EC_PARAMETERS)
111 ASN1_SEQUENCE(ECDSAPrivateKey) = {
112 ASN1_SIMPLE(ECDSAPrivateKey, version, LONG),
113 ASN1_SIMPLE(ECDSAPrivateKey, parameters, EC_PARAMETERS),
114 ASN1_SIMPLE(ECDSAPrivateKey, pub_key, ASN1_OCTET_STRING),
115 ASN1_SIMPLE(ECDSAPrivateKey, priv_key, BIGNUM)
116 } ASN1_SEQUENCE_END(ECDSAPrivateKey)
118 DECLARE_ASN1_FUNCTIONS_const(ECDSAPrivateKey)
119 DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECDSAPrivateKey, ecdsaPrivateKey)
120 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(ECDSAPrivateKey, ECDSAPrivateKey, ECDSAPrivateKey)
121 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ECDSAPrivateKey, ECDSAPrivateKey, ecdsaPrivateKey)
124 X9_62_FIELDID *ECDSA_get_X9_62_FIELDID(const ECDSA *ecdsa, X9_62_FIELDID *field)
126 /* TODO : characteristic two */
127 int ok=0, reason=ERR_R_ASN1_LIB;
128 X9_62_FIELDID *ret=NULL;
131 if (!ecdsa || !ecdsa->group)
132 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
135 if ((ret = X9_62_FIELDID_new()) == NULL) return NULL;
140 if (ret->fieldType != NULL) ASN1_OBJECT_free(ret->fieldType);
141 if (ret->parameters != NULL) ASN1_TYPE_free(ret->parameters);
143 if ((tmp = BN_new()) == NULL)
144 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
145 if ((ret->fieldType = OBJ_nid2obj(NID_X9_62_prime_field)) == NULL)
146 OPENSSL_ECDSA_ABORT(ERR_R_OBJ_LIB)
147 if ((ret->parameters = ASN1_TYPE_new()) == NULL) goto err;
148 ret->parameters->type = V_ASN1_INTEGER;
149 if (!EC_GROUP_get_curve_GFp(ecdsa->group, tmp, NULL, NULL, NULL))
150 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
151 if ((ret->parameters->value.integer = BN_to_ASN1_INTEGER(tmp, NULL)) == NULL) goto err;
155 if (ret && !field) X9_62_FIELDID_free(ret);
157 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_FIELDID, reason);
159 if (tmp) BN_free(tmp);
163 X9_62_CURVE *ECDSA_get_X9_62_CURVE(const ECDSA *ecdsa, X9_62_CURVE *curve)
165 int ok=0, reason=ERR_R_BN_LIB, len1=0, len2=0;
166 X9_62_CURVE *ret=NULL;
167 BIGNUM *tmp1=NULL, *tmp2=NULL;
168 unsigned char *buffer=NULL;
169 unsigned char char_buf = 0;
171 if (!ecdsa || !ecdsa->group)
172 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
173 if ((tmp1 = BN_new()) == NULL || (tmp2 = BN_new()) == NULL) goto err;
176 if ((ret = X9_62_CURVE_new()) == NULL)
177 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_CURVE_NEW_FAILURE)
182 if (ret->a) ASN1_OCTET_STRING_free(ret->a);
183 if (ret->b) ASN1_OCTET_STRING_free(ret->b);
184 if (ret->seed) ASN1_BIT_STRING_free(ret->seed);
186 if (!EC_GROUP_get_curve_GFp(ecdsa->group, NULL, tmp1, tmp2, NULL))
187 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
189 if ((ret->a = M_ASN1_OCTET_STRING_new()) == NULL ||
190 (ret->b = M_ASN1_OCTET_STRING_new()) == NULL )
191 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
193 len1 = BN_num_bytes(tmp1);
194 len2 = BN_num_bytes(tmp2);
196 if ((buffer = OPENSSL_malloc(len1 > len2 ? len1 : len2)) == NULL)
197 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
199 if (len1 == 0) /* => a == 0 */
201 if (!M_ASN1_OCTET_STRING_set(ret->a, &char_buf, 1))
202 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
206 if ((len1 = BN_bn2bin(tmp1, buffer)) == 0) goto err;
207 if (!M_ASN1_OCTET_STRING_set(ret->a, buffer, len1))
208 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
210 if (len2 == 0) /* => b == 0 */
212 if (!M_ASN1_OCTET_STRING_set(ret->a, &char_buf, 1))
213 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
217 if ((len2 = BN_bn2bin(tmp2, buffer)) == 0) goto err;
218 if (!M_ASN1_OCTET_STRING_set(ret->b, buffer, len2))
219 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
224 if ((ret->seed = ASN1_BIT_STRING_new()) == NULL) goto err;
225 if (!ASN1_BIT_STRING_set(ret->seed, ecdsa->seed, (int)ecdsa->seed_len))
226 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
234 if (ret && !curve) X9_62_CURVE_free(ret);
236 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_CURVE, reason);
238 if (buffer) OPENSSL_free(buffer);
239 if (tmp1) BN_free(tmp1);
240 if (tmp2) BN_free(tmp2);
244 X9_62_EC_PARAMETERS *ECDSA_get_X9_62_EC_PARAMETERS(const ECDSA *ecdsa, X9_62_EC_PARAMETERS *param)
246 int ok=0, reason=ERR_R_ASN1_LIB;
248 X9_62_EC_PARAMETERS *ret=NULL;
250 unsigned char *buffer=NULL;
251 EC_POINT *point=NULL;
253 if (!ecdsa || !ecdsa->group)
254 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
255 if ((tmp = BN_new()) == NULL)
256 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
259 if ((ret = X9_62_EC_PARAMETERS_new()) == NULL)
260 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_EC_PARAMETERS_NEW_FAILURE)
264 if (ret->version == NULL && (ret->version = ASN1_INTEGER_new()) == NULL)
265 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
266 if (!ASN1_INTEGER_set(ret->version, (long)ecdsa->version)) goto err;
267 if ((ret->fieldID = ECDSA_get_X9_62_FIELDID(ecdsa, ret->fieldID)) == NULL)
268 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_FIELDID_FAILURE)
269 if ((ret->curve = ECDSA_get_X9_62_CURVE(ecdsa, ret->curve)) == NULL)
270 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_CURVE_FAILURE)
271 if ((point = EC_GROUP_get0_generator(ecdsa->group)) == NULL)
272 OPENSSL_ECDSA_ABORT(ECDSA_R_CAN_NOT_GET_GENERATOR)
273 if (!(len = EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, NULL, len, NULL)))
274 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER_LENGTH)
275 if ((buffer = OPENSSL_malloc(len)) == NULL)
276 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
277 if (!EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, buffer, len, NULL))
278 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
279 if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL)
280 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
281 if (!ASN1_OCTET_STRING_set(ret->base, buffer, len)) goto err;
282 if (!EC_GROUP_get_order(ecdsa->group, tmp, NULL))
283 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
284 if ((ret->order = BN_to_ASN1_INTEGER(tmp, ret->order)) == NULL) goto err;
285 if (!EC_GROUP_get_cofactor(ecdsa->group, tmp, NULL))
286 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
287 if ((ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor)) == NULL) goto err;
292 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_EC_PARAMETERS, reason);
293 if (ret && !param) X9_62_EC_PARAMETERS_free(ret);
296 if (tmp) BN_free(tmp);
297 if (buffer) OPENSSL_free(buffer);
301 EC_PARAMETERS *ECDSA_get_EC_PARAMETERS(const ECDSA *ecdsa, EC_PARAMETERS *params)
305 EC_PARAMETERS *ret = params;
307 if ((ret = EC_PARAMETERS_new()) == NULL)
309 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ERR_R_MALLOC_FAILURE);
313 { /* missing parameter */
314 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ECDSA_R_MISSING_PARAMETERS);
315 EC_PARAMETERS_free(params);
318 if (ecdsa->parameter_flags & ECDSA_FLAG_NAMED_CURVE)
319 { /* use a named curve */
320 tmp = EC_GROUP_get_nid(ecdsa->group);
324 if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL)
329 /* use the x9_64 ec_parameters structure */
331 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
335 else if (ecdsa->parameter_flags & ECDSA_FLAG_IMPLICITLYCA)
336 { /* use implicitlyCA */
338 if ((ret->value.implicitlyCA = ASN1_NULL_new()) == NULL)
342 { /* use the x9_64 ec_parameters structure */
344 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
349 EC_PARAMETERS_free(ret);
355 ECDSA *ECDSA_x9_62parameters2ecdsa(const X9_62_EC_PARAMETERS *params, ECDSA *ecdsa)
357 int ok=0, reason=ERR_R_EC_LIB, tmp;
359 const EC_METHOD *meth=NULL;
360 BIGNUM *tmp_1=NULL, *tmp_2=NULL, *tmp_3=NULL;
361 EC_POINT *point=NULL;
364 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
367 if ((ret = ECDSA_new()) == NULL)
368 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_NEW_FAILURE)
372 if (ecdsa->group) EC_GROUP_free(ecdsa->group);
373 if (ecdsa->pub_key) EC_POINT_free(ecdsa->pub_key);
374 ecdsa->pub_key = NULL;
375 if (ecdsa->priv_key) BN_clear_free(ecdsa->priv_key);
376 ecdsa->priv_key = NULL;
377 if (ecdsa->seed) OPENSSL_free(ecdsa->seed);
381 BN_clear_free(ecdsa->kinv);
386 BN_clear_free(ecdsa->r);
391 /* TODO : characteristic two */
392 if (!params->fieldID || !params->fieldID->fieldType || !params->fieldID->parameters)
393 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_FIELD_SPECIFIED)
394 tmp = OBJ_obj2nid(params->fieldID->fieldType);
395 if (tmp == NID_X9_62_characteristic_two_field)
397 OPENSSL_ECDSA_ABORT(ECDSA_R_NOT_SUPPORTED)
399 else if (tmp == NID_X9_62_prime_field)
401 /* TODO : optimal method for the curve */
402 meth = EC_GFp_mont_method();
403 if ((ret->group = EC_GROUP_new(meth)) == NULL) goto err;
404 if (params->fieldID->parameters->type != V_ASN1_INTEGER)
405 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_ASN1_TYPE)
406 if (!params->fieldID->parameters->value.integer)
407 OPENSSL_ECDSA_ABORT(ECDSA_R_PRIME_MISSING)
408 if ((tmp_1 = ASN1_INTEGER_to_BN(params->fieldID->parameters->value.integer, NULL)) == NULL)
409 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
411 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_SPECIFIED)
412 if (!params->curve->a || !params->curve->a->data)
413 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_A_SPECIFIED)
414 if ((tmp_2 = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL)) == NULL)
415 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
416 if (!params->curve->b || !params->curve->b->data)
417 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_B_SPECIFIED)
418 if ((tmp_3 = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL)) == NULL)
419 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
420 if (!EC_GROUP_set_curve_GFp(ret->group, tmp_1, tmp_2, tmp_3, NULL)) goto err;
421 if ((point = EC_POINT_new(ret->group)) == NULL) goto err;
423 else OPENSSL_ECDSA_ABORT(ECDSA_R_WRONG_FIELD_IDENTIFIER)
424 if (params->curve->seed != NULL)
426 if (ret->seed != NULL)
427 OPENSSL_free(ret->seed);
428 if ((ret->seed = OPENSSL_malloc(params->curve->seed->length)) == NULL)
429 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
430 memcpy(ret->seed, params->curve->seed->data, params->curve->seed->length);
431 ret->seed_len = params->curve->seed->length;
435 if ((ret->version = (int)ASN1_INTEGER_get(params->version)) < 0)
436 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_VERSION_NUMER)
440 if (params->order && params->cofactor && params->base && params->base->data)
442 if ((tmp_1 = ASN1_INTEGER_to_BN(params->order, tmp_1)) == NULL)
443 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
444 if ((tmp_2 = ASN1_INTEGER_to_BN(params->cofactor, tmp_2)) == NULL)
445 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
446 if (!EC_POINT_oct2point(ret->group, point, params->base->data,
447 params->base->length, NULL)) goto err;
448 if (!EC_GROUP_set_generator(ret->group, point, tmp_1, tmp_2)) goto err;
454 ECDSAerr(ECDSA_F_ECDSA_GET, reason);
455 if (ret && !ecdsa) ECDSA_free(ret);
458 if (tmp_1) BN_free(tmp_1);
459 if (tmp_2) BN_free(tmp_2);
460 if (tmp_3) BN_free(tmp_3);
461 if (point) EC_POINT_free(point);
465 ECDSA *ECDSA_ecparameters2ecdsa(const EC_PARAMETERS *params, ECDSA *ecdsa)
470 if ((ret = ECDSA_new()) == NULL)
472 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ERR_R_MALLOC_FAILURE);
477 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_MISSING_PARAMETERS);
481 if (params->type == 0)
484 EC_GROUP_free(ret->group);
485 tmp = OBJ_obj2nid(params->value.named_curve);
486 ret->parameter_flags |= ECDSA_FLAG_NAMED_CURVE;
487 if ((ret->group = EC_GROUP_new_by_name(tmp)) == NULL)
489 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_EC_GROUP_NID2CURVE_FAILURE);
494 else if (params->type == 1)
496 ret = ECDSA_x9_62parameters2ecdsa(params->value.parameters, ret);
498 else if (params->type == 2)
501 EC_GROUP_free(ret->group);
503 ret->parameter_flags |= ECDSA_FLAG_IMPLICITLYCA;
507 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_UNKNOWN_PARAMETERS_TYPE);
514 ECDSA *d2i_ECDSAParameters(ECDSA **a, const unsigned char **in, long len)
516 ECDSA *ecdsa = (a && *a)? *a : NULL;
517 EC_PARAMETERS *params = NULL;
519 if ((params = d2i_EC_PARAMETERS(NULL, in, len)) == NULL)
521 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
522 EC_PARAMETERS_free(params);
525 if ((ecdsa = ECDSA_ecparameters2ecdsa(params, ecdsa)) == NULL)
527 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_ECPARAMETERS2ECDSA_FAILURE);
530 EC_PARAMETERS_free(params);
534 int i2d_ECDSAParameters(ECDSA *a, unsigned char **out)
537 EC_PARAMETERS *tmp = ECDSA_get_EC_PARAMETERS(a, NULL);
540 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_GET_EC_PARAMETERS_FAILURE);
543 if ((ret = i2d_EC_PARAMETERS(tmp, out)) == 0)
545 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
546 EC_PARAMETERS_free(tmp);
549 EC_PARAMETERS_free(tmp);
553 ECDSA *d2i_ECDSAPrivateKey(ECDSA **a, const unsigned char **in, long len)
555 int reason=ERR_R_BN_LIB, ok=0;
557 ECDSAPrivateKey *priv_key=NULL;
559 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
560 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
561 if ((priv_key = d2i_ecdsaPrivateKey(&priv_key, in, len)) == NULL)
562 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE)
563 if ((ret = ECDSA_ecparameters2ecdsa(priv_key->parameters, NULL)) == NULL)
564 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_FAILURE)
565 ret->version = priv_key->version;
566 if (priv_key->priv_key)
568 if ((ret->priv_key = BN_dup(priv_key->priv_key)) == NULL)
569 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
572 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSAPRIVATEKEY_MISSING_PRIVATE_KEY)
573 if ((ret->pub_key = EC_POINT_new(ret->group)) == NULL)
574 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
575 if (!EC_POINT_oct2point(ret->group, ret->pub_key, priv_key->pub_key->data, priv_key->pub_key->length, NULL))
576 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
580 if (ret) ECDSA_free(ret);
582 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, reason);
584 if (priv_key) ECDSAPrivateKey_free(priv_key);
588 int i2d_ECDSAPrivateKey(ECDSA *a, unsigned char **out)
590 int ret=0, ok=0, reason=ERR_R_EC_LIB;
591 unsigned char *buffer=NULL;
593 ECDSAPrivateKey *priv_key=NULL;
595 if (a == NULL || a->group == NULL)
596 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
597 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
598 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
599 if ((priv_key->parameters = ECDSA_get_EC_PARAMETERS(a, priv_key->parameters)) == NULL)
600 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_EC_PARAMETERS_FAILURE)
601 priv_key->version = a->version;
602 if (BN_copy(priv_key->priv_key, a->priv_key) == NULL)
603 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
604 buf_len = EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_COMPRESSED, NULL, 0, NULL);
605 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
606 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
607 if (!EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_COMPRESSED,
608 buffer, buf_len, NULL)) goto err;
609 if (!M_ASN1_OCTET_STRING_set(priv_key->pub_key, buffer, buf_len))
610 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
611 if ((ret = i2d_ecdsaPrivateKey(priv_key, out)) == 0)
612 OPENSSL_ECDSA_ABORT(ECDSA_R_I2D_ECDSA_PRIVATEKEY)
616 ECDSAerr(ECDSA_F_I2D_ECDSAPRIVATEKEY, reason);
617 if (buffer) OPENSSL_free(buffer);
618 if (priv_key) ECDSAPrivateKey_free(priv_key);
623 ECDSA *ECDSAPublicKey_set_octet_string(ECDSA **a, const unsigned char **in, long len)
627 if (a == NULL || (*a) == NULL || (*a)->group == NULL)
629 /* sorry, but a EC_GROUP-structur is necessary
630 * to set the public key */
631 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, ECDSA_R_MISSING_PARAMETERS);
635 if (ret->pub_key == NULL && (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
637 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, ERR_R_MALLOC_FAILURE);
640 if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL))
642 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, ERR_R_EC_LIB);
645 ECDSA_set_conversion_form(ret, (point_conversion_form_t)(*in[0] & ~0x01));
649 int ECDSAPublicKey_get_octet_string(ECDSA *a, unsigned char **out)
655 ECDSAerr(ECDSA_F_I2D_ECDSAPUBLICKEY, ECDSA_R_MISSING_PARAMETERS);
658 buf_len = EC_POINT_point2oct(a->group, a->pub_key, ECDSA_get_conversion_form(a), NULL, 0, NULL);
659 if (out == NULL || buf_len == 0)
660 /* out == NULL => just return the length of the octet string */
663 if ((*out = OPENSSL_malloc(buf_len)) == NULL)
665 ECDSAerr(ECDSA_F_I2D_ECDSAPUBLICKEY, ERR_R_MALLOC_FAILURE);
668 if (!EC_POINT_point2oct(a->group, a->pub_key, ECDSA_get_conversion_form(a),
669 *out, buf_len, NULL))
671 ECDSAerr(ECDSA_F_I2D_ECDSAPUBLICKEY, ERR_R_EC_LIB);