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 #include <openssl/rsa.h>
  65 #include <openssl/dsa.h>
  66
  67 #ifndef OPENSSL_NO_DSA
  68 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  69 #endif
  70 #ifndef OPENSSL_NO_EC
  71 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  72 #endif
  73
  74 /* Extract a private key from a PKCS8 structure */
  75
  76 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
  77 {
  78         EVP_PKEY *pkey = NULL;
  79 #ifndef OPENSSL_NO_RSA
  80         RSA *rsa = NULL;
  81 #endif
  82 #ifndef OPENSSL_NO_DSA
  83         DSA *dsa = NULL;
  84         ASN1_TYPE *t1, *t2;
  85         ASN1_INTEGER *privkey;
  86         STACK_OF(ASN1_TYPE) *ndsa = NULL;
  87 #endif
  88 #ifndef OPENSSL_NO_EC
  89         EC_KEY *eckey = NULL;
  90         const unsigned char *p_tmp;
  91 #endif
  92 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
  93         ASN1_TYPE    *param = NULL;
  94         BN_CTX *ctx = NULL;
  95         int plen;
  96 #endif
  97         X509_ALGOR *a;
  98         const unsigned char *p;
  99         const unsigned char *cp;
 100         int pkeylen;
 101         int  nid;
 102         char obj_tmp[80];
 103
 104         if(p8->pkey->type == V_ASN1_OCTET_STRING) {
 105                 p8->broken = PKCS8_OK;
 106                 p = p8->pkey->value.octet_string->data;
 107                 pkeylen = p8->pkey->value.octet_string->length;
 108         } else {
 109                 p8->broken = PKCS8_NO_OCTET;
 110                 p = p8->pkey->value.sequence->data;
 111                 pkeylen = p8->pkey->value.sequence->length;
 112         }
 113         if (!(pkey = EVP_PKEY_new())) {
 114                 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 115                 return NULL;
 116         }
 117         a = p8->pkeyalg;
 118         nid = OBJ_obj2nid(a->algorithm);
 119         switch(nid)
 120         {
 121 #ifndef OPENSSL_NO_RSA
 122                 case NID_rsaEncryption:
 123                 cp = p;
 124                 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
 125                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 126                         return NULL;
 127                 }
 128                 EVP_PKEY_assign_RSA (pkey, rsa);
 129                 break;
 130 #endif
 131 #ifndef OPENSSL_NO_DSA
 132                 case NID_dsa:
 133                 /* PKCS#8 DSA is weird: you just get a private key integer
 134                  * and parameters in the AlgorithmIdentifier the pubkey must
 135                  * be recalculated.
 136                  */
 137
 138                 /* Check for broken DSA PKCS#8, UGH! */
 139                 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
 140                     if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
 141                                                           d2i_ASN1_TYPE,
 142                                                           ASN1_TYPE_free))) {
 143                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 144                         goto dsaerr;
 145                     }
 146                     if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
 147                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 148                         goto dsaerr;
 149                     }
 150                     /* Handle Two broken types:
 151                      * SEQUENCE {parameters, priv_key}
 152                      * SEQUENCE {pub_key, priv_key}
 153                      */
 154
 155                     t1 = sk_ASN1_TYPE_value(ndsa, 0);
 156                     t2 = sk_ASN1_TYPE_value(ndsa, 1);
 157                     if(t1->type == V_ASN1_SEQUENCE) {
 158                         p8->broken = PKCS8_EMBEDDED_PARAM;
 159                         param = t1;
 160                     } else if(a->parameter->type == V_ASN1_SEQUENCE) {
 161                         p8->broken = PKCS8_NS_DB;
 162                         param = a->parameter;
 163                     } else {
 164                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 165                         goto dsaerr;
 166                     }
 167
 168                     if(t2->type != V_ASN1_INTEGER) {
 169                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 170                         goto dsaerr;
 171                     }
 172                     privkey = t2->value.integer;
 173                 } else {
 174                         if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
 175                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 176                                 goto dsaerr;
 177                         }
 178                         param = p8->pkeyalg->parameter;
 179                 }
 180                 if (!param || (param->type != V_ASN1_SEQUENCE)) {
 181                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 182                         goto dsaerr;
 183                 }
 184                 cp = p = param->value.sequence->data;
 185                 plen = param->value.sequence->length;
 186                 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
 187                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 188                         goto dsaerr;
 189                 }
 190                 /* We have parameters now set private key */
 191                 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
 192                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
 193                         goto dsaerr;
 194                 }
 195                 /* Calculate public key (ouch!) */
 196                 if (!(dsa->pub_key = BN_new())) {
 197                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 198                         goto dsaerr;
 199                 }
 200                 if (!(ctx = BN_CTX_new())) {
 201                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 202                         goto dsaerr;
 203                 }
 204
 205                 if (!BN_mod_exp(dsa->pub_key, dsa->g,
 206                                                  dsa->priv_key, dsa->p, ctx)) {
 207
 208                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
 209                         goto dsaerr;
 210                 }
 211
 212                 EVP_PKEY_assign_DSA(pkey, dsa);
 213                 BN_CTX_free (ctx);
 214                 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 215                 else ASN1_INTEGER_free(privkey);
 216                 break;
 217                 dsaerr:
 218                 BN_CTX_free (ctx);
 219                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 220                 DSA_free(dsa);
 221                 EVP_PKEY_free(pkey);
 222                 return NULL;
 223                 break;
 224 #endif
 225 #ifndef OPENSSL_NO_EC
 226                 case NID_X9_62_id_ecPublicKey:
 227                 p_tmp = p;
 228                 /* extract the ec parameters */
 229                 param = p8->pkeyalg->parameter;
 230
 231                 if (!param || ((param->type != V_ASN1_SEQUENCE) &&
 232                     (param->type != V_ASN1_OBJECT)))
 233                 {
 234                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 235                         goto ecerr;
 236                 }
 237
 238                 if (param->type == V_ASN1_SEQUENCE)
 239                 {
 240                         cp = p = param->value.sequence->data;
 241                         plen = param->value.sequence->length;
 242
 243                         if (!(eckey = d2i_ECParameters(NULL, &cp, plen)))
 244                         {
 245                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 246                                         EVP_R_DECODE_ERROR);
 247                                 goto ecerr;
 248                         }
 249                 }
 250                 else
 251                 {
 252                         cp = p = param->value.object->data;
 253                         plen = param->value.object->length;
 254
 255                         /* type == V_ASN1_OBJECT => the parameters are given
 256                          * by an asn1 OID
 257                          */
 258                         if ((eckey = EC_KEY_new()) == NULL)
 259                         {
 260                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 261                                         ERR_R_MALLOC_FAILURE);
 262                                 goto ecerr;
 263                         }
 264                         if ((eckey->group = EC_GROUP_new_by_nid(
 265                              OBJ_obj2nid(a->parameter->value.object))) == NULL)
 266                                 goto ecerr;
 267                         EC_GROUP_set_asn1_flag(eckey->group,
 268                                                 OPENSSL_EC_NAMED_CURVE);
 269                 }
 270
 271                 /* We have parameters now set private key */
 272                 if (!d2i_ECPrivateKey(&eckey, &p_tmp, pkeylen))
 273                 {
 274                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 275                         goto ecerr;
 276                 }
 277
 278                 /* calculate public key (if necessary) */
 279                 if (!eckey->pub_key)
 280                 {
 281                         /* the public key was not included in the SEC1 private
 282                          * key => calculate the public key */
 283                         eckey->pub_key = EC_POINT_new(eckey->group);
 284                         if (!eckey->pub_key)
 285                         {
 286                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 287                                 goto ecerr;
 288                         }
 289                         if (!EC_POINT_copy(eckey->pub_key,
 290                                 EC_GROUP_get0_generator(eckey->group)))
 291                         {
 292                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 293                                 goto ecerr;
 294                         }
 295                         if (!EC_POINT_mul(eckey->group, eckey->pub_key,
 296                                 eckey->priv_key, NULL, NULL, ctx))
 297                         {
 298                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 299                                 goto ecerr;
 300                         }
 301                 }
 302
 303                 EVP_PKEY_assign_EC_KEY(pkey, eckey);
 304                 if (ctx)
 305                         BN_CTX_free(ctx);
 306                 break;
 307 ecerr:
 308                 if (ctx)
 309                         BN_CTX_free(ctx);
 310                 if (eckey)
 311                         EC_KEY_free(eckey);
 312                 if (pkey)
 313                         EVP_PKEY_free(pkey);
 314                 return NULL;
 315 #endif
 316                 default:
 317                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 318                 if (!a->algorithm) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
 319                 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
 320                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 321                 EVP_PKEY_free (pkey);
 322                 return NULL;
 323         }
 324         return pkey;
 325 }
 326
 327 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
 328 {
 329         return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
 330 }
 331
 332 /* Turn a private key into a PKCS8 structure */
 333
 334 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
 335 {
 336         PKCS8_PRIV_KEY_INFO *p8;
 337
 338         if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
 339                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 340                 return NULL;
 341         }
 342         p8->broken = broken;
 343         ASN1_INTEGER_set (p8->version, 0);
 344         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 345                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 346                 PKCS8_PRIV_KEY_INFO_free (p8);
 347                 return NULL;
 348         }
 349         p8->pkey->type = V_ASN1_OCTET_STRING;
 350         switch (EVP_PKEY_type(pkey->type)) {
 351 #ifndef OPENSSL_NO_RSA
 352                 case EVP_PKEY_RSA:
 353
 354                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 355
 356                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 357                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 358                 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
 359                                          &p8->pkey->value.octet_string)) {
 360                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 361                         PKCS8_PRIV_KEY_INFO_free (p8);
 362                         return NULL;
 363                 }
 364                 break;
 365 #endif
 366 #ifndef OPENSSL_NO_DSA
 367                 case EVP_PKEY_DSA:
 368                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 369                         PKCS8_PRIV_KEY_INFO_free (p8);
 370                         return NULL;
 371                 }
 372
 373                 break;
 374 #endif
 375 #ifndef OPENSSL_NO_EC
 376                 case EVP_PKEY_EC:
 377                 if (!eckey_pkey2pkcs8(p8, pkey))
 378                 {
 379                         PKCS8_PRIV_KEY_INFO_free(p8);
 380                         return(NULL);
 381                 }
 382                 break;
 383 #endif
 384                 default:
 385                 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 386                 PKCS8_PRIV_KEY_INFO_free (p8);
 387                 return NULL;
 388         }
 389         RAND_add(p8->pkey->value.octet_string->data,
 390                  p8->pkey->value.octet_string->length, 0.0);
 391         return p8;
 392 }
 393
 394 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 395 {
 396         switch (broken) {
 397
 398                 case PKCS8_OK:
 399                 p8->broken = PKCS8_OK;
 400                 return p8;
 401                 break;
 402
 403                 case PKCS8_NO_OCTET:
 404                 p8->broken = PKCS8_NO_OCTET;
 405                 p8->pkey->type = V_ASN1_SEQUENCE;
 406                 return p8;
 407                 break;
 408
 409                 default:
 410                 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 411                 return NULL;
 412                 break;
 413
 414         }
 415 }
 416
 417 #ifndef OPENSSL_NO_DSA
 418 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 419 {
 420         ASN1_STRING *params;
 421         ASN1_INTEGER *prkey;
 422         ASN1_TYPE *ttmp;
 423         STACK_OF(ASN1_TYPE) *ndsa;
 424         unsigned char *p, *q;
 425         int len;
 426
 427         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 428         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 429         if (!(p = OPENSSL_malloc(len))) {
 430                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 431                 PKCS8_PRIV_KEY_INFO_free (p8);
 432                 return 0;
 433         }
 434         q = p;
 435         i2d_DSAparams (pkey->pkey.dsa, &q);
 436         params = ASN1_STRING_new();
 437         ASN1_STRING_set(params, p, len);
 438         OPENSSL_free(p);
 439         /* Get private key into integer */
 440         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 441                 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 442                 return 0;
 443         }
 444
 445         switch(p8->broken) {
 446
 447                 case PKCS8_OK:
 448                 case PKCS8_NO_OCTET:
 449
 450                 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
 451                                          &p8->pkey->value.octet_string)) {
 452                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 453                         M_ASN1_INTEGER_free (prkey);
 454                         return 0;
 455                 }
 456
 457                 M_ASN1_INTEGER_free (prkey);
 458                 p8->pkeyalg->parameter->value.sequence = params;
 459                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 460
 461                 break;
 462
 463                 case PKCS8_NS_DB:
 464
 465                 p8->pkeyalg->parameter->value.sequence = params;
 466                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 467                 ndsa = sk_ASN1_TYPE_new_null();
 468                 ttmp = ASN1_TYPE_new();
 469                 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
 470                         EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 471                         PKCS8_PRIV_KEY_INFO_free(p8);
 472                         return 0;
 473                 }
 474                 ttmp->type = V_ASN1_INTEGER;
 475                 sk_ASN1_TYPE_push(ndsa, ttmp);
 476
 477                 ttmp = ASN1_TYPE_new();
 478                 ttmp->value.integer = prkey;
 479                 ttmp->type = V_ASN1_INTEGER;
 480                 sk_ASN1_TYPE_push(ndsa, ttmp);
 481
 482                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 483
 484                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 485                                          &p8->pkey->value.octet_string->data,
 486                                          &p8->pkey->value.octet_string->length)) {
 487
 488                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 489                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 490                         M_ASN1_INTEGER_free(prkey);
 491                         return 0;
 492                 }
 493                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 494                 break;
 495
 496                 case PKCS8_EMBEDDED_PARAM:
 497
 498                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 499                 ndsa = sk_ASN1_TYPE_new_null();
 500                 ttmp = ASN1_TYPE_new();
 501                 ttmp->value.sequence = params;
 502                 ttmp->type = V_ASN1_SEQUENCE;
 503                 sk_ASN1_TYPE_push(ndsa, ttmp);
 504
 505                 ttmp = ASN1_TYPE_new();
 506                 ttmp->value.integer = prkey;
 507                 ttmp->type = V_ASN1_INTEGER;
 508                 sk_ASN1_TYPE_push(ndsa, ttmp);
 509
 510                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 511
 512                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 513                                          &p8->pkey->value.octet_string->data,
 514                                          &p8->pkey->value.octet_string->length)) {
 515
 516                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 517                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 518                         M_ASN1_INTEGER_free (prkey);
 519                         return 0;
 520                 }
 521                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 522                 break;
 523         }
 524         return 1;
 525 }
 526 #endif
 527
 528 #ifndef OPENSSL_NO_EC
 529 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 530 {
 531         EC_KEY          *eckey;
 532         unsigned char   *p, *pp;
 533         int             nid, i, ret = 0;
 534         unsigned int    tmp_flags;
 535
 536         if (pkey->pkey.eckey == NULL || pkey->pkey.eckey->group == NULL)
 537         {
 538                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 539                 return 0;
 540         }
 541         eckey = pkey->pkey.eckey;
 542
 543         /* set the ec parameters OID */
 544         if (p8->pkeyalg->algorithm)
 545                 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
 546
 547         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
 548
 549         /* set the ec parameters */
 550
 551         if (p8->pkeyalg->parameter)
 552         {
 553                 ASN1_TYPE_free(p8->pkeyalg->parameter);
 554                 p8->pkeyalg->parameter = NULL;
 555         }
 556
 557         if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
 558         {
 559                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 560                 return 0;
 561         }
 562
 563         if (EC_GROUP_get_asn1_flag(eckey->group)
 564                      && (nid = EC_GROUP_get_nid(eckey->group)))
 565         {
 566                 /* we have a 'named curve' => just set the OID */
 567                 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
 568                 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
 569         }
 570         else    /* explicit parameters */
 571         {
 572                 if ((i = i2d_ECParameters(eckey, NULL)) == 0)
 573                 {
 574                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 575                         return 0;
 576                 }
 577                 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
 578                 {
 579                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 580                         return 0;
 581                 }
 582                 pp = p;
 583                 if (!i2d_ECParameters(eckey, &pp))
 584                 {
 585                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 586                         OPENSSL_free(p);
 587                         return 0;
 588                 }
 589                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 590                 if ((p8->pkeyalg->parameter->value.sequence
 591                         = ASN1_STRING_new()) == NULL)
 592                 {
 593                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
 594                         OPENSSL_free(p);
 595                         return 0;
 596                 }
 597                 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
 598                 OPENSSL_free(p);
 599         }
 600
 601         /* set the private key */
 602
 603         /* do not include the parameters in the SEC1 private key
 604          * see PKCS#11 12.11 */
 605         tmp_flags  = pkey->pkey.eckey->enc_flag;
 606         pkey->pkey.eckey->enc_flag |= EC_PKEY_NO_PARAMETERS;
 607         i = i2d_ECPrivateKey(pkey->pkey.eckey, NULL);
 608         if (!i)
 609         {
 610                 pkey->pkey.eckey->enc_flag = tmp_flags;
 611                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 612                 return 0;
 613         }
 614         p = (unsigned char *) OPENSSL_malloc(i);
 615         if (!p)
 616         {
 617                 pkey->pkey.eckey->enc_flag = tmp_flags;
 618                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 619                 return 0;
 620         }
 621         pp = p;
 622         if (!i2d_ECPrivateKey(pkey->pkey.eckey, &pp))
 623         {
 624                 pkey->pkey.eckey->enc_flag = tmp_flags;
 625                 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
 626                 OPENSSL_free(p);
 627                 return 0;
 628         }
 629         /* restore old encoding flags */
 630         pkey->pkey.eckey->enc_flag = tmp_flags;
 631
 632         switch(p8->broken) {
 633
 634                 case PKCS8_OK:
 635                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 636                 if (!p8->pkey->value.octet_string ||
 637                     !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,
 638                     (const void *)p, i))
 639
 640                 {
 641                         EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 642                 }
 643                 else
 644                         ret = 1;
 645                 break;
 646                 case PKCS8_NO_OCTET:            /* RSA specific */
 647                 case PKCS8_NS_DB:               /* DSA specific */
 648                 case PKCS8_EMBEDDED_PARAM:      /* DSA specific */
 649                 default:
 650                         EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 651         }
 652         OPENSSL_cleanse(p, (size_t)i);
 653         OPENSSL_free(p);
 654         return ret;
 655 }
 656 #endif