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 static point_conversion_form_t POINT_CONVERSION_FORM = POINT_CONVERSION_COMPRESSED;
64 ASN1_SEQUENCE(ECDSA_SIG) = {
65 ASN1_SIMPLE(ECDSA_SIG, r, CBIGNUM),
66 ASN1_SIMPLE(ECDSA_SIG, s, CBIGNUM)
67 } ASN1_SEQUENCE_END(ECDSA_SIG)
69 IMPLEMENT_ASN1_FUNCTIONS_const(ECDSA_SIG)
71 ASN1_SEQUENCE(X9_62_FIELDID) = {
72 ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT),
73 ASN1_SIMPLE(X9_62_FIELDID, parameters, ASN1_ANY)
74 } ASN1_SEQUENCE_END(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 IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_CURVE)
86 ASN1_SEQUENCE(X9_62_EC_PARAMETERS) = {
87 ASN1_OPT(X9_62_EC_PARAMETERS, version, ASN1_INTEGER),
88 ASN1_SIMPLE(X9_62_EC_PARAMETERS, fieldID, X9_62_FIELDID),
89 ASN1_SIMPLE(X9_62_EC_PARAMETERS, curve, X9_62_CURVE),
90 ASN1_SIMPLE(X9_62_EC_PARAMETERS, base, ASN1_OCTET_STRING),
91 ASN1_SIMPLE(X9_62_EC_PARAMETERS, order, ASN1_INTEGER),
92 ASN1_SIMPLE(X9_62_EC_PARAMETERS, cofactor, ASN1_INTEGER)
93 } ASN1_SEQUENCE_END(X9_62_EC_PARAMETERS)
95 IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_EC_PARAMETERS)
97 ASN1_CHOICE(EC_PARAMETERS) = {
98 ASN1_SIMPLE(EC_PARAMETERS, value.named_curve, ASN1_OBJECT),
99 ASN1_SIMPLE(EC_PARAMETERS, value.parameters, X9_62_EC_PARAMETERS),
100 ASN1_SIMPLE(EC_PARAMETERS, value.implicitlyCA, ASN1_NULL)
101 } ASN1_CHOICE_END(EC_PARAMETERS)
103 IMPLEMENT_ASN1_FUNCTIONS_const(EC_PARAMETERS)
105 ASN1_SEQUENCE(ECDSAPrivateKey) = {
106 ASN1_SIMPLE(ECDSAPrivateKey, version, LONG),
107 ASN1_SIMPLE(ECDSAPrivateKey, parameters, EC_PARAMETERS),
108 ASN1_SIMPLE(ECDSAPrivateKey, pub_key, ASN1_OCTET_STRING),
109 ASN1_SIMPLE(ECDSAPrivateKey, priv_key, BIGNUM)
110 } ASN1_SEQUENCE_END(ECDSAPrivateKey)
112 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(ECDSAPrivateKey, ECDSAPrivateKey, ECDSAPrivateKey)
113 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ECDSAPrivateKey, ECDSAPrivateKey, ecdsaPrivateKey)
115 ASN1_SEQUENCE(ecdsa_pub_internal) = {
116 ASN1_SIMPLE(ECDSAPrivateKey, pub_key, ASN1_OCTET_STRING),
117 ASN1_SIMPLE(ECDSAPrivateKey, parameters, EC_PARAMETERS),
118 } ASN1_SEQUENCE_END_name(ECDSAPrivateKey, ecdsa_pub_internal)
120 ASN1_CHOICE(ECDSAPublicKey) = {
121 ASN1_SIMPLE(ECDSAPrivateKey, pub_key, ASN1_OCTET_STRING),
122 ASN1_EX_COMBINE(0, 0, ecdsa_pub_internal)
123 } ASN1_CHOICE_END_selector(ECDSAPrivateKey, ECDSAPublicKey, write_params)
125 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ECDSAPrivateKey, ECDSAPublicKey, ecdsaPublicKey)
128 X9_62_FIELDID *ECDSA_get_X9_62_FIELDID(const ECDSA *ecdsa, X9_62_FIELDID *field)
130 /* TODO : characteristic two */
131 int ok=0, reason=ERR_R_ASN1_LIB;
132 X9_62_FIELDID *ret=NULL;
135 if (!ecdsa || !ecdsa->group)
136 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
139 if ((ret = X9_62_FIELDID_new()) == NULL) return NULL;
144 if (ret->fieldType != NULL) ASN1_OBJECT_free(ret->fieldType);
145 if (ret->parameters != NULL) ASN1_TYPE_free(ret->parameters);
147 if ((tmp = BN_new()) == NULL)
148 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
149 if ((ret->fieldType = OBJ_nid2obj(NID_X9_62_prime_field)) == NULL)
150 OPENSSL_ECDSA_ABORT(ERR_R_OBJ_LIB)
151 if ((ret->parameters = ASN1_TYPE_new()) == NULL) goto err;
152 ret->parameters->type = V_ASN1_INTEGER;
153 if (!EC_GROUP_get_curve_GFp(ecdsa->group, tmp, NULL, NULL, NULL))
154 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
155 if ((ret->parameters->value.integer = BN_to_ASN1_INTEGER(tmp, NULL)) == NULL) goto err;
159 if (ret && !field) X9_62_FIELDID_free(ret);
161 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_FIELDID, reason);
163 if (tmp) BN_free(tmp);
167 X9_62_CURVE *ECDSA_get_X9_62_CURVE(const ECDSA *ecdsa, X9_62_CURVE *curve)
169 int ok=0, reason=ERR_R_BN_LIB, len1=0, len2=0;
170 X9_62_CURVE *ret=NULL;
171 BIGNUM *tmp1=NULL, *tmp2=NULL;
172 unsigned char *buffer=NULL;
174 if (!ecdsa || !ecdsa->group)
175 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
176 if ((tmp1 = BN_new()) == NULL || (tmp2 = BN_new()) == NULL) goto err;
179 if ((ret = X9_62_CURVE_new()) == NULL)
180 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_CURVE_NEW_FAILURE)
185 if (ret->a) ASN1_OCTET_STRING_free(ret->a);
186 if (ret->b) ASN1_OCTET_STRING_free(ret->b);
187 if (ret->seed) ASN1_BIT_STRING_free(ret->seed);
189 if (!EC_GROUP_get_curve_GFp(ecdsa->group, NULL, tmp1, tmp2, NULL))
190 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
192 if ((len1 = BN_num_bytes(tmp1)) == 0)
193 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER_LENGTH)
194 if ((buffer = OPENSSL_malloc(len1)) == NULL)
195 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
196 if ((len1 = BN_bn2bin(tmp1, buffer)) == 0) goto err;
197 if ((ret->a = M_ASN1_OCTET_STRING_new()) == NULL)
198 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
199 if (!M_ASN1_OCTET_STRING_set(ret->a, buffer, len1))
200 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
202 if ((len2 = BN_num_bytes(tmp2)) == 0)
203 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER_LENGTH)
206 OPENSSL_free(buffer);
207 if ((buffer = OPENSSL_malloc(len2)) == NULL)
208 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
210 if ((len2 = BN_bn2bin(tmp2, buffer)) == 0) goto err;
211 if ((ret->b = M_ASN1_OCTET_STRING_new()) == NULL)
212 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
213 if (!M_ASN1_OCTET_STRING_set(ret->b, buffer, len2))
214 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
218 if ((ret->seed = ASN1_BIT_STRING_new()) == NULL) goto err;
219 if (!ASN1_BIT_STRING_set(ret->seed, ecdsa->seed, (int)ecdsa->seed_len))
220 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
228 if (ret && !curve) X9_62_CURVE_free(ret);
230 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_CURVE, reason);
232 if (buffer) OPENSSL_free(buffer);
233 if (tmp1) BN_free(tmp1);
234 if (tmp2) BN_free(tmp2);
238 X9_62_EC_PARAMETERS *ECDSA_get_X9_62_EC_PARAMETERS(const ECDSA *ecdsa, X9_62_EC_PARAMETERS *param)
240 int ok=0, reason=ERR_R_ASN1_LIB;
242 X9_62_EC_PARAMETERS *ret=NULL;
244 unsigned char *buffer=NULL;
245 EC_POINT *point=NULL;
247 if (!ecdsa || !ecdsa->group)
248 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
249 if ((tmp = BN_new()) == NULL)
250 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
253 if ((ret = X9_62_EC_PARAMETERS_new()) == NULL)
254 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_EC_PARAMETERS_NEW_FAILURE)
258 if (ecdsa->version == 1)
262 if (ret->version == NULL && (ret->version = ASN1_INTEGER_new()) == NULL)
263 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
264 if (!ASN1_INTEGER_set(ret->version, (long)ecdsa->version)) goto err;
266 if ((ret->fieldID = ECDSA_get_X9_62_FIELDID(ecdsa, ret->fieldID)) == NULL)
267 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_FIELDID_FAILURE)
268 if ((ret->curve = ECDSA_get_X9_62_CURVE(ecdsa, ret->curve)) == NULL)
269 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_CURVE_FAILURE)
270 if ((point = EC_GROUP_get0_generator(ecdsa->group)) == NULL)
271 OPENSSL_ECDSA_ABORT(ECDSA_R_CAN_NOT_GET_GENERATOR)
272 if (!(len = EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, NULL, len, NULL)))
273 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER_LENGTH)
274 if ((buffer = OPENSSL_malloc(len)) == NULL)
275 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
276 if (!EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, buffer, len, NULL))
277 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
278 if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL)
279 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
280 if (!ASN1_OCTET_STRING_set(ret->base, buffer, len)) goto err;
281 if (!EC_GROUP_get_order(ecdsa->group, tmp, NULL))
282 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
283 if ((ret->order = BN_to_ASN1_INTEGER(tmp, ret->order)) == NULL) goto err;
284 if (!EC_GROUP_get_cofactor(ecdsa->group, tmp, NULL))
285 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
286 if ((ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor)) == NULL) goto err;
291 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_EC_PARAMETERS, reason);
292 if (ret && !param) X9_62_EC_PARAMETERS_free(ret);
295 if (tmp) BN_free(tmp);
296 if (buffer) OPENSSL_free(buffer);
300 EC_PARAMETERS *ECDSA_get_EC_PARAMETERS(const ECDSA *ecdsa, EC_PARAMETERS *params)
304 EC_PARAMETERS *ret = params;
306 if ((ret = EC_PARAMETERS_new()) == NULL)
308 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ERR_R_MALLOC_FAILURE);
312 { /* missing parameter */
313 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ECDSA_R_MISSING_PARAMETERS);
314 EC_PARAMETERS_free(params);
317 if (ecdsa->parameter_flags & ECDSA_FLAG_NAMED_CURVE)
318 { /* use a named curve */
319 tmp = EC_GROUP_get_nid(ecdsa->group);
323 if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL)
328 /* use the x9_64 ec_parameters structure */
330 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
334 else if (ecdsa->parameter_flags & ECDSA_FLAG_IMPLICITLYCA)
335 { /* use implicitlyCA */
337 if ((ret->value.implicitlyCA = ASN1_NULL_new()) == NULL)
341 { /* use the x9_64 ec_parameters structure */
343 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
348 EC_PARAMETERS_free(ret);
354 ECDSA *ECDSA_x9_62parameters2ecdsa(const X9_62_EC_PARAMETERS *params, ECDSA *ecdsa)
356 int ok=0, reason=ERR_R_EC_LIB, tmp;
358 const EC_METHOD *meth=NULL;
359 BIGNUM *tmp_1=NULL, *tmp_2=NULL, *tmp_3=NULL;
360 EC_POINT *point=NULL;
363 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
366 if ((ret = ECDSA_new()) == NULL)
367 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_NEW_FAILURE)
371 if (ecdsa->group) EC_GROUP_free(ecdsa->group);
372 if (ecdsa->pub_key) EC_POINT_free(ecdsa->pub_key);
373 ecdsa->pub_key = NULL;
374 if (ecdsa->priv_key) BN_clear_free(ecdsa->priv_key);
375 ecdsa->priv_key = NULL;
376 if (ecdsa->seed) OPENSSL_free(ecdsa->seed);
380 BN_clear_free(ecdsa->kinv);
385 BN_clear_free(ecdsa->r);
390 /* TODO : characteristic two */
391 if (!params->fieldID || !params->fieldID->fieldType || !params->fieldID->parameters)
392 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_FIELD_SPECIFIED)
393 tmp = OBJ_obj2nid(params->fieldID->fieldType);
394 if (tmp == NID_X9_62_characteristic_two_field)
396 OPENSSL_ECDSA_ABORT(ECDSA_R_NOT_SUPPORTED)
398 else if (tmp == NID_X9_62_prime_field)
400 /* TODO : optimal method for the curve */
401 meth = EC_GFp_mont_method();
402 if ((ret->group = EC_GROUP_new(meth)) == NULL) goto err;
403 if (params->fieldID->parameters->type != V_ASN1_INTEGER)
404 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_ASN1_TYPE)
405 if (!params->fieldID->parameters->value.integer)
406 OPENSSL_ECDSA_ABORT(ECDSA_R_PRIME_MISSING)
407 if ((tmp_1 = ASN1_INTEGER_to_BN(params->fieldID->parameters->value.integer, NULL)) == NULL)
408 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
410 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_SPECIFIED)
411 if (!params->curve->a || !params->curve->a->data)
412 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_A_SPECIFIED)
413 if ((tmp_2 = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL)) == NULL)
414 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
415 if (!params->curve->b || !params->curve->b->data)
416 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_B_SPECIFIED)
417 if ((tmp_3 = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL)) == NULL)
418 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
419 if (!EC_GROUP_set_curve_GFp(ret->group, tmp_1, tmp_2, tmp_3, NULL)) goto err;
420 if ((point = EC_POINT_new(ret->group)) == NULL) goto err;
422 else OPENSSL_ECDSA_ABORT(ECDSA_R_WRONG_FIELD_IDENTIFIER)
423 if (params->curve->seed != NULL)
425 if (ret->seed != NULL)
426 OPENSSL_free(ret->seed);
427 if ((ret->seed = OPENSSL_malloc(params->curve->seed->length)) == NULL)
428 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
429 memcpy(ret->seed, params->curve->seed->data, params->curve->seed->length);
430 ret->seed_len = params->curve->seed->length;
434 if ((ret->version = (int)ASN1_INTEGER_get(params->version)) < 0)
435 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_VERSION_NUMER)
439 if (params->order && params->cofactor && params->base && params->base->data)
441 if ((tmp_1 = ASN1_INTEGER_to_BN(params->order, tmp_1)) == NULL)
442 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
443 if ((tmp_2 = ASN1_INTEGER_to_BN(params->cofactor, tmp_2)) == NULL)
444 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
445 if (!EC_POINT_oct2point(ret->group, point, params->base->data,
446 params->base->length, NULL)) goto err;
447 if (!EC_GROUP_set_generator(ret->group, point, tmp_1, tmp_2)) goto err;
453 ECDSAerr(ECDSA_F_ECDSA_GET, reason);
454 if (ret && !ecdsa) ECDSA_free(ret);
457 if (tmp_1) BN_free(tmp_1);
458 if (tmp_2) BN_free(tmp_2);
459 if (tmp_3) BN_free(tmp_3);
460 if (point) EC_POINT_free(point);
464 ECDSA *ECDSA_ecparameters2ecdsa(const EC_PARAMETERS *params, ECDSA *ecdsa)
469 if ((ret = ECDSA_new()) == NULL)
471 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ERR_R_MALLOC_FAILURE);
476 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_MISSING_PARAMETERS);
480 if (params->type == 0)
483 EC_GROUP_free(ret->group);
484 tmp = OBJ_obj2nid(params->value.named_curve);
485 ret->parameter_flags |= ECDSA_FLAG_NAMED_CURVE;
486 if ((ret->group = EC_GROUP_new_by_name(tmp)) == NULL)
488 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_EC_GROUP_NID2CURVE_FAILURE);
493 else if (params->type == 1)
495 ret = ECDSA_x9_62parameters2ecdsa(params->value.parameters, ret);
497 else if (params->type == 2)
500 EC_GROUP_free(ret->group);
502 ret->parameter_flags |= ECDSA_FLAG_IMPLICITLYCA;
506 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_UNKNOWN_PARAMETERS_TYPE);
513 ECDSA *d2i_ECDSAParameters(ECDSA **a, const unsigned char **in, long len)
515 ECDSA *ecdsa = (a && *a)? *a : NULL;
516 EC_PARAMETERS *params = NULL;
518 if ((params = d2i_EC_PARAMETERS(NULL, in, len)) == NULL)
520 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
521 EC_PARAMETERS_free(params);
524 if ((ecdsa = ECDSA_ecparameters2ecdsa(params, ecdsa)) == NULL)
526 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_ECPARAMETERS2ECDSA_FAILURE);
529 EC_PARAMETERS_free(params);
533 int i2d_ECDSAParameters(ECDSA *a, unsigned char **out)
536 EC_PARAMETERS *tmp = ECDSA_get_EC_PARAMETERS(a, NULL);
539 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_GET_EC_PARAMETERS_FAILURE);
542 if ((ret = i2d_EC_PARAMETERS(tmp, out)) == 0)
544 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
545 EC_PARAMETERS_free(tmp);
548 EC_PARAMETERS_free(tmp);
552 ECDSA *d2i_ECDSAPrivateKey(ECDSA **a, const unsigned char **in, long len)
554 int reason=ERR_R_BN_LIB, ok=0;
556 ECDSAPrivateKey *priv_key=NULL;
558 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
559 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
560 if ((priv_key = d2i_ecdsaPrivateKey(&priv_key, in, len)) == NULL)
561 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE)
562 if ((ret = ECDSA_ecparameters2ecdsa(priv_key->parameters, NULL)) == NULL)
563 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_FAILURE)
564 ret->version = priv_key->version;
565 ret->write_params = priv_key->write_params;
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 *d2i_ECDSAPublicKey(ECDSA **a, const unsigned char **in, long len)
625 int reason=ERR_R_BN_LIB, ok=0, ecdsa_new=1;
627 ECDSAPrivateKey *priv_key=NULL;
634 else if ((ret = ECDSA_new()) == NULL)
635 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE);
636 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
637 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
638 if ((priv_key = d2i_ecdsaPublicKey(&priv_key, in, len)) == NULL)
639 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE)
640 if (priv_key->write_params == 0)
642 if (ecdsa_new || !ret->group)
643 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
644 if (ret->pub_key == NULL && (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
645 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
646 if (!EC_POINT_oct2point(ret->group, ret->pub_key, priv_key->pub_key->data,
647 priv_key->pub_key->length, NULL))
648 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
650 else if (priv_key->write_params == 1)
652 if ((ret = ECDSA_ecparameters2ecdsa(priv_key->parameters, ret)) == NULL)
653 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_FAILURE)
654 if (ret->pub_key == NULL && (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
655 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
656 if (!EC_POINT_oct2point(ret->group, ret->pub_key, priv_key->pub_key->data,
657 priv_key->pub_key->length, NULL))
658 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
660 else OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER)
661 ret->write_params = 1;
665 if (ret && ecdsa_new) ECDSA_free(ret);
667 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, reason);
669 if (priv_key) ECDSAPrivateKey_free(priv_key);
673 int i2d_ECDSAPublicKey(ECDSA *a, unsigned char **out)
675 int ret=0, reason=ERR_R_EC_LIB, ok=0;
676 unsigned char *buffer=NULL;
678 ECDSAPrivateKey *priv_key=NULL;
681 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
682 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
683 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
684 if ((priv_key->parameters = ECDSA_get_EC_PARAMETERS(a, priv_key->parameters)) == NULL)
685 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_EC_PARAMETERS_FAILURE)
686 priv_key->version = a->version;
687 priv_key->write_params = a->write_params;
688 buf_len = EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_FORM, NULL, 0, NULL);
689 if (!buf_len || (buffer = OPENSSL_malloc(buf_len)) == NULL)
690 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
691 if (!EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_FORM,
692 buffer, buf_len, NULL)) goto err;
693 if (!M_ASN1_OCTET_STRING_set(priv_key->pub_key, buffer, buf_len))
694 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
695 if ((ret = i2d_ecdsaPublicKey(priv_key, out)) == 0)
696 OPENSSL_ECDSA_ABORT(ECDSA_R_I2D_ECDSA_PUBLICKEY)
700 ECDSAerr(ECDSA_F_I2D_ECDSAPUBLICKEY, reason);
701 if (buffer) OPENSSL_free(buffer);
702 if (priv_key) ECDSAPrivateKey_free(priv_key);