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