crypto/evp/evp_pkey.c

   1 /* evp_pkey.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999-2002 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 <stdlib.h>
  61 #include "cryptlib.h"
  62 #include <openssl/x509.h>
  63 #include <openssl/rand.h>
  64
  65 #ifndef OPENSSL_NO_DSA
  66 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  67 #endif
  68 #ifndef OPENSSL_NO_EC
  69 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  70 #endif
  71
  72 /* Extract a private key from a PKCS8 structure */
  73
  74 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
  75 {
  76         EVP_PKEY *pkey = NULL;
  77 #ifndef OPENSSL_NO_RSA
  78         RSA *rsa = NULL;
  79 #endif
  80 #ifndef OPENSSL_NO_DSA
  81         DSA *dsa = NULL;
  82         ASN1_TYPE *t1, *t2;
  83         ASN1_INTEGER *privkey;
  84         STACK_OF(ASN1_TYPE) *ndsa = NULL;
  85 #endif
  86 #ifndef OPENSSL_NO_EC
  87         EC_KEY *eckey = NULL;
  88         const unsigned char *p_tmp;
  89 #endif
  90 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
  91         ASN1_TYPE    *param = NULL;
  92         BN_CTX *ctx = NULL;
  93         int plen;
  94 #endif
  95         X509_ALGOR *a;
  96         unsigned char *p;
  97         const unsigned char *cp;
  98         int pkeylen;
  99         int  nid;
 100         char obj_tmp[80];
 101
 102         if(p8->pkey->type == V_ASN1_OCTET_STRING) {
 103                 p8->broken = PKCS8_OK;
 104                 p = p8->pkey->value.octet_string->data;
 105                 pkeylen = p8->pkey->value.octet_string->length;
 106         } else {
 107                 p8->broken = PKCS8_NO_OCTET;
 108                 p = p8->pkey->value.sequence->data;
 109                 pkeylen = p8->pkey->value.sequence->length;
 110         }
 111         if (!(pkey = EVP_PKEY_new())) {
 112                 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 113                 return NULL;
 114         }
 115         a = p8->pkeyalg;
 116         nid = OBJ_obj2nid(a->algorithm);
 117         switch(nid)
 118         {
 119 #ifndef OPENSSL_NO_RSA
 120                 case NID_rsaEncryption:
 121                 cp = p;
 122                 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
 123                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 124                         return NULL;
 125                 }
 126                 EVP_PKEY_assign_RSA (pkey, rsa);
 127                 break;
 128 #endif
 129 #ifndef OPENSSL_NO_DSA
 130                 case NID_dsa:
 131                 /* PKCS#8 DSA is weird: you just get a private key integer
 132                  * and parameters in the AlgorithmIdentifier the pubkey must
 133                  * be recalculated.
 134                  */
 135
 136                 /* Check for broken DSA PKCS#8, UGH! */
 137                 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
 138                     if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
 139                                                           d2i_ASN1_TYPE,
 140                                                           ASN1_TYPE_free))) {
 141                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 142                         goto dsaerr;
 143                     }
 144                     if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
 145                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 146                         goto dsaerr;
 147                     }
 148                     /* Handle Two broken types:
 149                      * SEQUENCE {parameters, priv_key}
 150                      * SEQUENCE {pub_key, priv_key}
 151                      */
 152
 153                     t1 = sk_ASN1_TYPE_value(ndsa, 0);
 154                     t2 = sk_ASN1_TYPE_value(ndsa, 1);
 155                     if(t1->type == V_ASN1_SEQUENCE) {
 156                         p8->broken = PKCS8_EMBEDDED_PARAM;
 157                         param = t1;
 158                     } else if(a->parameter->type == V_ASN1_SEQUENCE) {
 159                         p8->broken = PKCS8_NS_DB;
 160                         param = a->parameter;
 161                     } else {
 162                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 163                         goto dsaerr;
 164                     }
 165
 166                     if(t2->type != V_ASN1_INTEGER) {
 167                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 168                         goto dsaerr;
 169                     }
 170                     privkey = t2->value.integer;
 171                 } else {
 172                         if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
 173                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 174                                 goto dsaerr;
 175                         }
 176                         param = p8->pkeyalg->parameter;
 177                 }
 178                 if (!param || (param->type != V_ASN1_SEQUENCE)) {
 179                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 180                         goto dsaerr;
 181                 }
 182                 cp = p = param->value.sequence->data;
 183                 plen = param->value.sequence->length;
 184                 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
 185                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 186                         goto dsaerr;
 187                 }
 188                 /* We have parameters now set private key */
 189                 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
 190                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
 191                         goto dsaerr;
 192                 }
 193                 /* Calculate public key (ouch!) */
 194                 if (!(dsa->pub_key = BN_new())) {
 195                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 196                         goto dsaerr;
 197                 }
 198                 if (!(ctx = BN_CTX_new())) {
 199                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 200                         goto dsaerr;
 201                 }
 202
 203                 if (!BN_mod_exp(dsa->pub_key, dsa->g,
 204                                                  dsa->priv_key, dsa->p, ctx)) {
 205
 206                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
 207                         goto dsaerr;
 208                 }
 209
 210                 EVP_PKEY_assign_DSA(pkey, dsa);
 211                 BN_CTX_free (ctx);
 212                 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 213                 else ASN1_INTEGER_free(privkey);
 214                 break;
 215                 dsaerr:
 216                 BN_CTX_free (ctx);
 217                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 218                 DSA_free(dsa);
 219                 EVP_PKEY_free(pkey);
 220                 return NULL;
 221                 break;
 222 #endif
 223 #ifndef OPENSSL_NO_EC
 224                 case NID_X9_62_id_ecPublicKey:
 225                 p_tmp = p;
 226                 /* extract the ec parameters */
 227                 param = p8->pkeyalg->parameter;
 228
 229                 if (!param || ((param->type != V_ASN1_SEQUENCE) &&
 230                     (param->type != V_ASN1_OBJECT)))
 231                 {
 232                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 233                         goto ecerr;
 234                 }
 235
 236                 if (param->type == V_ASN1_SEQUENCE)
 237                 {
 238                         cp = p = param->value.sequence->data;
 239                         plen = param->value.sequence->length;
 240
 241                         if (!(eckey = d2i_ECParameters(NULL, &cp, plen)))
 242                         {
 243                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 244                                         EVP_R_DECODE_ERROR);
 245                                 goto ecerr;
 246                         }
 247                 }
 248                 else
 249                 {
 250                         cp = p = param->value.object->data;
 251                         plen = param->value.object->length;
 252
 253                         /* type == V_ASN1_OBJECT => the parameters are given
 254                          * by an asn1 OID
 255                          */
 256                         if ((eckey = EC_KEY_new()) == NULL)
 257                         {
 258                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 259                                         ERR_R_MALLOC_FAILURE);
 260                                 goto ecerr;
 261                         }
 262                         if ((eckey->group = EC_GROUP_new_by_nid(
 263                              OBJ_obj2nid(a->parameter->value.object))) == NULL)
 264                                 goto ecerr;
 265                         EC_GROUP_set_asn1_flag(eckey->group,
 266                                                 OPENSSL_EC_NAMED_CURVE);
 267                 }
 268
 269                 /* We have parameters now set private key */
 270                 if (!d2i_ECPrivateKey(&eckey, &p_tmp, pkeylen))
 271                 {
 272                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 273                         goto ecerr;
 274                 }
 275
 276                 /* calculate public key (if necessary) */
 277                 if (!eckey->pub_key)
 278                 {
 279                         /* the public key was not included in the SEC1 private
 280                          * key => calculate the public key */
 281                         eckey->pub_key = EC_POINT_new(eckey->group);
 282                         if (!eckey->pub_key)
 283                         {
 284                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 285                                 goto ecerr;
 286                         }
 287                         if (!EC_POINT_copy(eckey->pub_key,
 288                                 EC_GROUP_get0_generator(eckey->group)))
 289                         {
 290                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 291                                 goto ecerr;
 292                         }
 293                         if (!EC_POINT_mul(eckey->group, eckey->pub_key,
 294                                 eckey->priv_key, NULL, NULL, ctx))
 295                         {
 296                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 297                                 goto ecerr;
 298                         }
 299                 }
 300
 301                 EVP_PKEY_assign_EC_KEY(pkey, eckey);
 302                 if (ctx)
 303                         BN_CTX_free(ctx);
 304                 break;
 305 ecerr:
 306                 if (ctx)
 307                         BN_CTX_free(ctx);
 308                 if (eckey)
 309                         EC_KEY_free(eckey);
 310                 if (pkey)
 311                         EVP_PKEY_free(pkey);
 312                 return NULL;
 313 #endif
 314                 default:
 315                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 316                 if (!a->algorithm) strcpy (obj_tmp, "NULL");
 317                 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
 318                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 319                 EVP_PKEY_free (pkey);
 320                 return NULL;
 321         }
 322         return pkey;
 323 }
 324
 325 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
 326 {
 327         return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
 328 }
 329
 330 /* Turn a private key into a PKCS8 structure */
 331
 332 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
 333 {
 334         PKCS8_PRIV_KEY_INFO *p8;
 335
 336         if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
 337                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 338                 return NULL;
 339         }
 340         p8->broken = broken;
 341         ASN1_INTEGER_set (p8->version, 0);
 342         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 343                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 344                 PKCS8_PRIV_KEY_INFO_free (p8);
 345                 return NULL;
 346         }
 347         p8->pkey->type = V_ASN1_OCTET_STRING;
 348         switch (EVP_PKEY_type(pkey->type)) {
 349 #ifndef OPENSSL_NO_RSA
 350                 case EVP_PKEY_RSA:
 351
 352                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 353
 354                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 355                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 356                 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
 357                                          &p8->pkey->value.octet_string)) {
 358                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 359                         PKCS8_PRIV_KEY_INFO_free (p8);
 360                         return NULL;
 361                 }
 362                 break;
 363 #endif
 364 #ifndef OPENSSL_NO_DSA
 365                 case EVP_PKEY_DSA:
 366                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 367                         PKCS8_PRIV_KEY_INFO_free (p8);
 368                         return NULL;
 369                 }
 370
 371                 break;
 372 #endif
 373 #ifndef OPENSSL_NO_EC
 374                 case EVP_PKEY_EC:
 375                 if (!eckey_pkey2pkcs8(p8, pkey))
 376                 {
 377                         PKCS8_PRIV_KEY_INFO_free(p8);
 378                         return(NULL);
 379                 }
 380                 break;
 381 #endif
 382                 default:
 383                 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 384                 PKCS8_PRIV_KEY_INFO_free (p8);
 385                 return NULL;
 386         }
 387         RAND_add(p8->pkey->value.octet_string->data,
 388                  p8->pkey->value.octet_string->length, 0);
 389         return p8;
 390 }
 391
 392 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 393 {
 394         switch (broken) {
 395
 396                 case PKCS8_OK:
 397                 p8->broken = PKCS8_OK;
 398                 return p8;
 399                 break;
 400
 401                 case PKCS8_NO_OCTET:
 402                 p8->broken = PKCS8_NO_OCTET;
 403                 p8->pkey->type = V_ASN1_SEQUENCE;
 404                 return p8;
 405                 break;
 406
 407                 default:
 408                 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 409                 return NULL;
 410                 break;
 411
 412         }
 413 }
 414
 415 #ifndef OPENSSL_NO_DSA
 416 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 417 {
 418         ASN1_STRING *params;
 419         ASN1_INTEGER *prkey;
 420         ASN1_TYPE *ttmp;
 421         STACK_OF(ASN1_TYPE) *ndsa;
 422         unsigned char *p, *q;
 423         int len;
 424
 425         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 426         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 427         if (!(p = OPENSSL_malloc(len))) {
 428                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 429                 PKCS8_PRIV_KEY_INFO_free (p8);
 430                 return 0;
 431         }
 432         q = p;
 433         i2d_DSAparams (pkey->pkey.dsa, &q);
 434         params = ASN1_STRING_new();
 435         ASN1_STRING_set(params, p, len);
 436         OPENSSL_free(p);
 437         /* Get private key into integer */
 438         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 439                 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 440                 return 0;
 441         }
 442
 443         switch(p8->broken) {
 444
 445                 case PKCS8_OK:
 446                 case PKCS8_NO_OCTET:
 447
 448                 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
 449                                          &p8->pkey->value.octet_string)) {
 450                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 451                         M_ASN1_INTEGER_free (prkey);
 452                         return 0;
 453                 }
 454
 455                 M_ASN1_INTEGER_free (prkey);
 456                 p8->pkeyalg->parameter->value.sequence = params;
 457                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 458
 459                 break;
 460
 461                 case PKCS8_NS_DB:
 462
 463                 p8->pkeyalg->parameter->value.sequence = params;
 464                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 465                 ndsa = sk_ASN1_TYPE_new_null();
 466                 ttmp = ASN1_TYPE_new();
 467                 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
 468                         EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 469                         PKCS8_PRIV_KEY_INFO_free(p8);
 470                         return 0;
 471                 }
 472                 ttmp->type = V_ASN1_INTEGER;
 473                 sk_ASN1_TYPE_push(ndsa, ttmp);
 474
 475                 ttmp = ASN1_TYPE_new();
 476                 ttmp->value.integer = prkey;
 477                 ttmp->type = V_ASN1_INTEGER;
 478                 sk_ASN1_TYPE_push(ndsa, ttmp);
 479
 480                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 481
 482                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 483                                          &p8->pkey->value.octet_string->data,
 484                                          &p8->pkey->value.octet_string->length)) {
 485
 486                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 487                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 488                         M_ASN1_INTEGER_free(prkey);
 489                         return 0;
 490                 }
 491                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 492                 break;
 493
 494                 case PKCS8_EMBEDDED_PARAM:
 495
 496                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 497                 ndsa = sk_ASN1_TYPE_new_null();
 498                 ttmp = ASN1_TYPE_new();
 499                 ttmp->value.sequence = params;
 500                 ttmp->type = V_ASN1_SEQUENCE;
 501                 sk_ASN1_TYPE_push(ndsa, ttmp);
 502
 503                 ttmp = ASN1_TYPE_new();
 504                 ttmp->value.integer = prkey;
 505                 ttmp->type = V_ASN1_INTEGER;
 506                 sk_ASN1_TYPE_push(ndsa, ttmp);
 507
 508                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 509
 510                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 511                                          &p8->pkey->value.octet_string->data,
 512                                          &p8->pkey->value.octet_string->length)) {
 513
 514                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 515                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 516                         M_ASN1_INTEGER_free (prkey);
 517                         return 0;
 518                 }
 519                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 520                 break;
 521         }
 522         return 1;
 523 }
 524 #endif
 525
 526 #ifndef OPENSSL_NO_EC
 527 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 528 {
 529         EC_KEY          *eckey;
 530         unsigned char   *p, *pp;
 531         int             nid, i, ret = 0;
 532         unsigned int    tmp_flags;
 533
 534         if (pkey->pkey.eckey == NULL || pkey->pkey.eckey->group == NULL)
 535         {
 536                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 537                 return 0;
 538         }
 539         eckey = pkey->pkey.eckey;
 540
 541         /* set the ec parameters OID */
 542         if (p8->pkeyalg->algorithm)
 543                 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
 544
 545         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
 546
 547         /* set the ec parameters */
 548
 549         if (p8->pkeyalg->parameter)
 550         {
 551                 ASN1_TYPE_free(p8->pkeyalg->parameter);
 552                 p8->pkeyalg->parameter = NULL;
 553         }
 554
 555         if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
 556         {
 557                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 558                 return 0;
 559         }
 560
 561         if (EC_GROUP_get_asn1_flag(eckey->group)
 562                      && (nid = EC_GROUP_get_nid(eckey->group)))
 563         {
 564                 /* we have a 'named curve' => just set the OID */
 565                 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
 566                 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
 567         }
 568         else    /* explicit parameters */
 569         {
 570                 if ((i = i2d_ECParameters(eckey, NULL)) == 0)
 571                 {
 572                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 573                         return 0;
 574                 }
 575                 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
 576                 {
 577                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 578                         return 0;
 579                 }
 580                 pp = p;
 581                 if (!i2d_ECParameters(eckey, &pp))
 582                 {
 583                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 584                         OPENSSL_free(p);
 585                         return 0;
 586                 }
 587                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 588                 if ((p8->pkeyalg->parameter->value.sequence
 589                         = ASN1_STRING_new()) == NULL)
 590                 {
 591                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
 592                         OPENSSL_free(p);
 593                         return 0;
 594                 }
 595                 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
 596                 OPENSSL_free(p);
 597         }
 598
 599         /* set the private key */
 600
 601         /* do not include the parameters in the SEC1 private key
 602          * see PKCS#11 12.11 */
 603         tmp_flags  = pkey->pkey.eckey->enc_flag;
 604         pkey->pkey.eckey->enc_flag |= EC_PKEY_NO_PARAMETERS;
 605         i = i2d_ECPrivateKey(pkey->pkey.eckey, NULL);
 606         if (!i)
 607         {
 608                 pkey->pkey.eckey->enc_flag = tmp_flags;
 609                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 610                 return 0;
 611         }
 612         p = (unsigned char *) OPENSSL_malloc(i);
 613         if (!p)
 614         {
 615                 pkey->pkey.eckey->enc_flag = tmp_flags;
 616                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 617                 return 0;
 618         }
 619         pp = p;
 620         if (!i2d_ECPrivateKey(pkey->pkey.eckey, &pp))
 621         {
 622                 pkey->pkey.eckey->enc_flag = tmp_flags;
 623                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 624                 OPENSSL_free(p);
 625                 return 0;
 626         }
 627         /* restore old encoding flags */
 628         pkey->pkey.eckey->enc_flag = tmp_flags;
 629
 630         switch(p8->broken) {
 631
 632                 case PKCS8_OK:
 633                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 634                 if (!p8->pkey->value.octet_string ||
 635                     !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,
 636                     (const void *)p, i))
 637
 638                 {
 639                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 640                 }
 641                 else
 642                         ret = 1;
 643                 break;
 644                 case PKCS8_NO_OCTET:            /* RSA specific */
 645                 case PKCS8_NS_DB:               /* DSA specific */
 646                 case PKCS8_EMBEDDED_PARAM:      /* DSA specific */
 647                 default:
 648                         EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 649         }
 650         OPENSSL_cleanse(p, (size_t)i);
 651         OPENSSL_free(p);
 652         return ret;
 653 }
 654 #endif