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;
173 unsigned char char_buf = 0;
175 if (!ecdsa || !ecdsa->group)
176 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
177 if ((tmp1 = BN_new()) == NULL || (tmp2 = BN_new()) == NULL) goto err;
180 if ((ret = X9_62_CURVE_new()) == NULL)
181 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_CURVE_NEW_FAILURE)
186 if (ret->a) ASN1_OCTET_STRING_free(ret->a);
187 if (ret->b) ASN1_OCTET_STRING_free(ret->b);
188 if (ret->seed) ASN1_BIT_STRING_free(ret->seed);
190 if (!EC_GROUP_get_curve_GFp(ecdsa->group, NULL, tmp1, tmp2, NULL))
191 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
193 if ((ret->a = M_ASN1_OCTET_STRING_new()) == NULL ||
194 (ret->b = M_ASN1_OCTET_STRING_new()) == NULL )
195 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
197 len1 = BN_num_bytes(tmp1);
198 len2 = BN_num_bytes(tmp2);
200 if ((buffer = OPENSSL_malloc(len1 > len2 ? len1 : len2)) == NULL)
201 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
203 if (len1 == 0) /* => a == 0 */
205 if (!M_ASN1_OCTET_STRING_set(ret->a, char_buf, 1))
206 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
210 if ((len1 = BN_bn2bin(tmp1, buffer)) == 0) goto err;
211 if (!M_ASN1_OCTET_STRING_set(ret->a, buffer, len1))
212 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
214 if (len2 == 0) /* => b == 0 */
216 if (!M_ASN1_OCTET_STRING_set(ret->a, char_buf, 1))
217 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
221 if ((len2 = BN_bn2bin(tmp2, buffer)) == 0) goto err;
222 if (!M_ASN1_OCTET_STRING_set(ret->b, buffer, len2))
223 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
228 if ((ret->seed = ASN1_BIT_STRING_new()) == NULL) goto err;
229 if (!ASN1_BIT_STRING_set(ret->seed, ecdsa->seed, (int)ecdsa->seed_len))
230 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
238 if (ret && !curve) X9_62_CURVE_free(ret);
240 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_CURVE, reason);
242 if (buffer) OPENSSL_free(buffer);
243 if (tmp1) BN_free(tmp1);
244 if (tmp2) BN_free(tmp2);
248 X9_62_EC_PARAMETERS *ECDSA_get_X9_62_EC_PARAMETERS(const ECDSA *ecdsa, X9_62_EC_PARAMETERS *param)
250 int ok=0, reason=ERR_R_ASN1_LIB;
252 X9_62_EC_PARAMETERS *ret=NULL;
254 unsigned char *buffer=NULL;
255 EC_POINT *point=NULL;
257 if (!ecdsa || !ecdsa->group)
258 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
259 if ((tmp = BN_new()) == NULL)
260 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
263 if ((ret = X9_62_EC_PARAMETERS_new()) == NULL)
264 OPENSSL_ECDSA_ABORT(ECDSA_R_X9_62_EC_PARAMETERS_NEW_FAILURE)
268 if (ecdsa->version == 1)
272 if (ret->version == NULL && (ret->version = ASN1_INTEGER_new()) == NULL)
273 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
274 if (!ASN1_INTEGER_set(ret->version, (long)ecdsa->version)) goto err;
276 if ((ret->fieldID = ECDSA_get_X9_62_FIELDID(ecdsa, ret->fieldID)) == NULL)
277 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_FIELDID_FAILURE)
278 if ((ret->curve = ECDSA_get_X9_62_CURVE(ecdsa, ret->curve)) == NULL)
279 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_CURVE_FAILURE)
280 if ((point = EC_GROUP_get0_generator(ecdsa->group)) == NULL)
281 OPENSSL_ECDSA_ABORT(ECDSA_R_CAN_NOT_GET_GENERATOR)
282 if (!(len = EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, NULL, len, NULL)))
283 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER_LENGTH)
284 if ((buffer = OPENSSL_malloc(len)) == NULL)
285 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
286 if (!EC_POINT_point2oct(ecdsa->group, point, POINT_CONVERSION_COMPRESSED, buffer, len, NULL))
287 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
288 if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL)
289 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
290 if (!ASN1_OCTET_STRING_set(ret->base, buffer, len)) goto err;
291 if (!EC_GROUP_get_order(ecdsa->group, tmp, NULL))
292 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
293 if ((ret->order = BN_to_ASN1_INTEGER(tmp, ret->order)) == NULL) goto err;
294 if (!EC_GROUP_get_cofactor(ecdsa->group, tmp, NULL))
295 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
296 if ((ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor)) == NULL) goto err;
301 ECDSAerr(ECDSA_F_ECDSA_GET_X9_62_EC_PARAMETERS, reason);
302 if (ret && !param) X9_62_EC_PARAMETERS_free(ret);
305 if (tmp) BN_free(tmp);
306 if (buffer) OPENSSL_free(buffer);
310 EC_PARAMETERS *ECDSA_get_EC_PARAMETERS(const ECDSA *ecdsa, EC_PARAMETERS *params)
314 EC_PARAMETERS *ret = params;
316 if ((ret = EC_PARAMETERS_new()) == NULL)
318 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ERR_R_MALLOC_FAILURE);
322 { /* missing parameter */
323 ECDSAerr(ECDSA_F_ECDSA_GET_EC_PARAMETERS, ECDSA_R_MISSING_PARAMETERS);
324 EC_PARAMETERS_free(params);
327 if (ecdsa->parameter_flags & ECDSA_FLAG_NAMED_CURVE)
328 { /* use a named curve */
329 tmp = EC_GROUP_get_nid(ecdsa->group);
333 if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL)
338 /* use the x9_64 ec_parameters structure */
340 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
344 else if (ecdsa->parameter_flags & ECDSA_FLAG_IMPLICITLYCA)
345 { /* use implicitlyCA */
347 if ((ret->value.implicitlyCA = ASN1_NULL_new()) == NULL)
351 { /* use the x9_64 ec_parameters structure */
353 if ((ret->value.parameters = ECDSA_get_X9_62_EC_PARAMETERS(ecdsa, NULL)) == NULL)
358 EC_PARAMETERS_free(ret);
364 ECDSA *ECDSA_x9_62parameters2ecdsa(const X9_62_EC_PARAMETERS *params, ECDSA *ecdsa)
366 int ok=0, reason=ERR_R_EC_LIB, tmp;
368 const EC_METHOD *meth=NULL;
369 BIGNUM *tmp_1=NULL, *tmp_2=NULL, *tmp_3=NULL;
370 EC_POINT *point=NULL;
373 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
376 if ((ret = ECDSA_new()) == NULL)
377 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_NEW_FAILURE)
381 if (ecdsa->group) EC_GROUP_free(ecdsa->group);
382 if (ecdsa->pub_key) EC_POINT_free(ecdsa->pub_key);
383 ecdsa->pub_key = NULL;
384 if (ecdsa->priv_key) BN_clear_free(ecdsa->priv_key);
385 ecdsa->priv_key = NULL;
386 if (ecdsa->seed) OPENSSL_free(ecdsa->seed);
390 BN_clear_free(ecdsa->kinv);
395 BN_clear_free(ecdsa->r);
400 /* TODO : characteristic two */
401 if (!params->fieldID || !params->fieldID->fieldType || !params->fieldID->parameters)
402 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_FIELD_SPECIFIED)
403 tmp = OBJ_obj2nid(params->fieldID->fieldType);
404 if (tmp == NID_X9_62_characteristic_two_field)
406 OPENSSL_ECDSA_ABORT(ECDSA_R_NOT_SUPPORTED)
408 else if (tmp == NID_X9_62_prime_field)
410 /* TODO : optimal method for the curve */
411 meth = EC_GFp_mont_method();
412 if ((ret->group = EC_GROUP_new(meth)) == NULL) goto err;
413 if (params->fieldID->parameters->type != V_ASN1_INTEGER)
414 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_ASN1_TYPE)
415 if (!params->fieldID->parameters->value.integer)
416 OPENSSL_ECDSA_ABORT(ECDSA_R_PRIME_MISSING)
417 if ((tmp_1 = ASN1_INTEGER_to_BN(params->fieldID->parameters->value.integer, NULL)) == NULL)
418 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
420 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_SPECIFIED)
421 if (!params->curve->a || !params->curve->a->data)
422 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_A_SPECIFIED)
423 if ((tmp_2 = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL)) == NULL)
424 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
425 if (!params->curve->b || !params->curve->b->data)
426 OPENSSL_ECDSA_ABORT(ECDSA_R_NO_CURVE_PARAMETER_B_SPECIFIED)
427 if ((tmp_3 = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL)) == NULL)
428 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
429 if (!EC_GROUP_set_curve_GFp(ret->group, tmp_1, tmp_2, tmp_3, NULL)) goto err;
430 if ((point = EC_POINT_new(ret->group)) == NULL) goto err;
432 else OPENSSL_ECDSA_ABORT(ECDSA_R_WRONG_FIELD_IDENTIFIER)
433 if (params->curve->seed != NULL)
435 if (ret->seed != NULL)
436 OPENSSL_free(ret->seed);
437 if ((ret->seed = OPENSSL_malloc(params->curve->seed->length)) == NULL)
438 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
439 memcpy(ret->seed, params->curve->seed->data, params->curve->seed->length);
440 ret->seed_len = params->curve->seed->length;
444 if ((ret->version = (int)ASN1_INTEGER_get(params->version)) < 0)
445 OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_VERSION_NUMER)
449 if (params->order && params->cofactor && params->base && params->base->data)
451 if ((tmp_1 = ASN1_INTEGER_to_BN(params->order, tmp_1)) == NULL)
452 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
453 if ((tmp_2 = ASN1_INTEGER_to_BN(params->cofactor, tmp_2)) == NULL)
454 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
455 if (!EC_POINT_oct2point(ret->group, point, params->base->data,
456 params->base->length, NULL)) goto err;
457 if (!EC_GROUP_set_generator(ret->group, point, tmp_1, tmp_2)) goto err;
463 ECDSAerr(ECDSA_F_ECDSA_GET, reason);
464 if (ret && !ecdsa) ECDSA_free(ret);
467 if (tmp_1) BN_free(tmp_1);
468 if (tmp_2) BN_free(tmp_2);
469 if (tmp_3) BN_free(tmp_3);
470 if (point) EC_POINT_free(point);
474 ECDSA *ECDSA_ecparameters2ecdsa(const EC_PARAMETERS *params, ECDSA *ecdsa)
479 if ((ret = ECDSA_new()) == NULL)
481 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ERR_R_MALLOC_FAILURE);
486 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_MISSING_PARAMETERS);
490 if (params->type == 0)
493 EC_GROUP_free(ret->group);
494 tmp = OBJ_obj2nid(params->value.named_curve);
495 ret->parameter_flags |= ECDSA_FLAG_NAMED_CURVE;
496 if ((ret->group = EC_GROUP_new_by_name(tmp)) == NULL)
498 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_EC_GROUP_NID2CURVE_FAILURE);
503 else if (params->type == 1)
505 ret = ECDSA_x9_62parameters2ecdsa(params->value.parameters, ret);
507 else if (params->type == 2)
510 EC_GROUP_free(ret->group);
512 ret->parameter_flags |= ECDSA_FLAG_IMPLICITLYCA;
516 ECDSAerr(ECDSA_F_ECDSA_GET_ECDSA, ECDSA_R_UNKNOWN_PARAMETERS_TYPE);
523 ECDSA *d2i_ECDSAParameters(ECDSA **a, const unsigned char **in, long len)
525 ECDSA *ecdsa = (a && *a)? *a : NULL;
526 EC_PARAMETERS *params = NULL;
528 if ((params = d2i_EC_PARAMETERS(NULL, in, len)) == NULL)
530 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
531 EC_PARAMETERS_free(params);
534 if ((ecdsa = ECDSA_ecparameters2ecdsa(params, ecdsa)) == NULL)
536 ECDSAerr(ECDSA_F_D2I_ECDSAPARAMETERS, ECDSA_R_ECPARAMETERS2ECDSA_FAILURE);
539 EC_PARAMETERS_free(params);
543 int i2d_ECDSAParameters(ECDSA *a, unsigned char **out)
546 EC_PARAMETERS *tmp = ECDSA_get_EC_PARAMETERS(a, NULL);
549 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_GET_EC_PARAMETERS_FAILURE);
552 if ((ret = i2d_EC_PARAMETERS(tmp, out)) == 0)
554 ECDSAerr(ECDSA_F_I2D_ECDSAPARAMETERS, ECDSA_R_ECDSA_R_D2I_EC_PARAMETERS_FAILURE);
555 EC_PARAMETERS_free(tmp);
558 EC_PARAMETERS_free(tmp);
562 ECDSA *d2i_ECDSAPrivateKey(ECDSA **a, const unsigned char **in, long len)
564 int reason=ERR_R_BN_LIB, ok=0;
566 ECDSAPrivateKey *priv_key=NULL;
568 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
569 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
570 if ((priv_key = d2i_ecdsaPrivateKey(&priv_key, in, len)) == NULL)
571 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE)
572 if ((ret = ECDSA_ecparameters2ecdsa(priv_key->parameters, NULL)) == NULL)
573 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_FAILURE)
574 ret->version = priv_key->version;
575 ret->write_params = priv_key->write_params;
576 if (priv_key->priv_key)
578 if ((ret->priv_key = BN_dup(priv_key->priv_key)) == NULL)
579 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
582 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSAPRIVATEKEY_MISSING_PRIVATE_KEY)
583 if ((ret->pub_key = EC_POINT_new(ret->group)) == NULL)
584 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
585 if (!EC_POINT_oct2point(ret->group, ret->pub_key, priv_key->pub_key->data, priv_key->pub_key->length, NULL))
586 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
590 if (ret) ECDSA_free(ret);
592 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, reason);
594 if (priv_key) ECDSAPrivateKey_free(priv_key);
598 int i2d_ECDSAPrivateKey(ECDSA *a, unsigned char **out)
600 int ret=0, ok=0, reason=ERR_R_EC_LIB;
601 unsigned char *buffer=NULL;
603 ECDSAPrivateKey *priv_key=NULL;
605 if (a == NULL || a->group == NULL)
606 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
607 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
608 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
609 if ((priv_key->parameters = ECDSA_get_EC_PARAMETERS(a, priv_key->parameters)) == NULL)
610 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_EC_PARAMETERS_FAILURE)
611 priv_key->version = a->version;
612 if (BN_copy(priv_key->priv_key, a->priv_key) == NULL)
613 OPENSSL_ECDSA_ABORT(ERR_R_BN_LIB)
614 buf_len = EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_COMPRESSED, NULL, 0, NULL);
615 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
616 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
617 if (!EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_COMPRESSED,
618 buffer, buf_len, NULL)) goto err;
619 if (!M_ASN1_OCTET_STRING_set(priv_key->pub_key, buffer, buf_len))
620 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
621 if ((ret = i2d_ecdsaPrivateKey(priv_key, out)) == 0)
622 OPENSSL_ECDSA_ABORT(ECDSA_R_I2D_ECDSA_PRIVATEKEY)
626 ECDSAerr(ECDSA_F_I2D_ECDSAPRIVATEKEY, reason);
627 if (buffer) OPENSSL_free(buffer);
628 if (priv_key) ECDSAPrivateKey_free(priv_key);
633 ECDSA *d2i_ECDSAPublicKey(ECDSA **a, const unsigned char **in, long len)
635 int reason=ERR_R_BN_LIB, ok=0, ecdsa_new=1;
637 ECDSAPrivateKey *priv_key=NULL;
644 else if ((ret = ECDSA_new()) == NULL)
645 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE);
646 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
647 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
648 if ((priv_key = d2i_ecdsaPublicKey(&priv_key, in, len)) == NULL)
649 OPENSSL_ECDSA_ABORT(ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE)
650 if (priv_key->write_params == 0)
652 if (ecdsa_new || !ret->group)
653 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
654 if (ret->pub_key == NULL && (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
655 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
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 if (priv_key->write_params == 1)
662 if ((ret = ECDSA_ecparameters2ecdsa(priv_key->parameters, ret)) == NULL)
663 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_FAILURE)
664 if (ret->pub_key == NULL && (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
665 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
666 if (!EC_POINT_oct2point(ret->group, ret->pub_key, priv_key->pub_key->data,
667 priv_key->pub_key->length, NULL))
668 OPENSSL_ECDSA_ABORT(ERR_R_EC_LIB)
670 else OPENSSL_ECDSA_ABORT(ECDSA_R_UNEXPECTED_PARAMETER)
671 ret->write_params = 1;
675 if (ret && ecdsa_new) ECDSA_free(ret);
677 ECDSAerr(ECDSA_F_D2I_ECDSAPRIVATEKEY, reason);
679 if (priv_key) ECDSAPrivateKey_free(priv_key);
683 int i2d_ECDSAPublicKey(ECDSA *a, unsigned char **out)
685 int ret=0, reason=ERR_R_EC_LIB, ok=0;
686 unsigned char *buffer=NULL;
688 ECDSAPrivateKey *priv_key=NULL;
691 OPENSSL_ECDSA_ABORT(ECDSA_R_MISSING_PARAMETERS)
692 if ((priv_key = ECDSAPrivateKey_new()) == NULL)
693 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE)
694 if ((priv_key->parameters = ECDSA_get_EC_PARAMETERS(a, priv_key->parameters)) == NULL)
695 OPENSSL_ECDSA_ABORT(ECDSA_R_ECDSA_GET_X9_62_EC_PARAMETERS_FAILURE)
696 priv_key->version = a->version;
697 priv_key->write_params = a->write_params;
698 buf_len = EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_FORM, NULL, 0, NULL);
699 if (!buf_len || (buffer = OPENSSL_malloc(buf_len)) == NULL)
700 OPENSSL_ECDSA_ABORT(ERR_R_MALLOC_FAILURE)
701 if (!EC_POINT_point2oct(a->group, a->pub_key, POINT_CONVERSION_FORM,
702 buffer, buf_len, NULL)) goto err;
703 if (!M_ASN1_OCTET_STRING_set(priv_key->pub_key, buffer, buf_len))
704 OPENSSL_ECDSA_ABORT(ERR_R_ASN1_LIB)
705 if ((ret = i2d_ecdsaPublicKey(priv_key, out)) == 0)
706 OPENSSL_ECDSA_ABORT(ECDSA_R_I2D_ECDSA_PUBLICKEY)
710 ECDSAerr(ECDSA_F_I2D_ECDSAPUBLICKEY, reason);
711 if (buffer) OPENSSL_free(buffer);
712 if (priv_key) ECDSAPrivateKey_free(priv_key);