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_curve_name(
 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_BROKEN,ERR_R_MALLOC_FAILURE);
 341                 return NULL;
 342         }
 343         p8->broken = broken;
 344         if (!ASN1_INTEGER_set(p8->version, 0)) {
 345                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 346                 PKCS8_PRIV_KEY_INFO_free (p8);
 347                 return NULL;
 348         }
 349         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 350                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 351                 PKCS8_PRIV_KEY_INFO_free (p8);
 352                 return NULL;
 353         }
 354         p8->pkey->type = V_ASN1_OCTET_STRING;
 355         switch (EVP_PKEY_type(pkey->type)) {
 356 #ifndef OPENSSL_NO_RSA
 357                 case EVP_PKEY_RSA:
 358
 359                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 360
 361                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 362                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 363                 if (!ASN1_pack_string_of (EVP_PKEY,pkey, i2d_PrivateKey,
 364                                          &p8->pkey->value.octet_string)) {
 365                         EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 366                         PKCS8_PRIV_KEY_INFO_free (p8);
 367                         return NULL;
 368                 }
 369                 break;
 370 #endif
 371 #ifndef OPENSSL_NO_DSA
 372                 case EVP_PKEY_DSA:
 373                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 374                         PKCS8_PRIV_KEY_INFO_free (p8);
 375                         return NULL;
 376                 }
 377
 378                 break;
 379 #endif
 380 #ifndef OPENSSL_NO_EC
 381                 case EVP_PKEY_EC:
 382                 if (!eckey_pkey2pkcs8(p8, pkey))
 383                 {
 384                         PKCS8_PRIV_KEY_INFO_free(p8);
 385                         return(NULL);
 386                 }
 387                 break;
 388 #endif
 389                 default:
 390                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 391                 PKCS8_PRIV_KEY_INFO_free (p8);
 392                 return NULL;
 393         }
 394         RAND_add(p8->pkey->value.octet_string->data,
 395                  p8->pkey->value.octet_string->length, 0.0);
 396         return p8;
 397 }
 398
 399 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 400 {
 401         switch (broken) {
 402
 403                 case PKCS8_OK:
 404                 p8->broken = PKCS8_OK;
 405                 return p8;
 406                 break;
 407
 408                 case PKCS8_NO_OCTET:
 409                 p8->broken = PKCS8_NO_OCTET;
 410                 p8->pkey->type = V_ASN1_SEQUENCE;
 411                 return p8;
 412                 break;
 413
 414                 default:
 415                 EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 416                 return NULL;
 417         }
 418 }
 419
 420 #ifndef OPENSSL_NO_DSA
 421 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 422 {
 423         ASN1_STRING *params = NULL;
 424         ASN1_INTEGER *prkey = NULL;
 425         ASN1_TYPE *ttmp = NULL;
 426         STACK_OF(ASN1_TYPE) *ndsa = NULL;
 427         unsigned char *p = NULL, *q;
 428         int len;
 429
 430         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 431         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 432         if (!(p = OPENSSL_malloc(len))) {
 433                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 434                 goto err;
 435         }
 436         q = p;
 437         i2d_DSAparams (pkey->pkey.dsa, &q);
 438         if (!(params = ASN1_STRING_new())) {
 439                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 440                 goto err;
 441         }
 442         if (!ASN1_STRING_set(params, p, len)) {
 443                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 444                 goto err;
 445         }
 446         OPENSSL_free(p);
 447         p = NULL;
 448         /* Get private key into integer */
 449         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 450                 EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 451                 goto err;
 452         }
 453
 454         switch(p8->broken) {
 455
 456                 case PKCS8_OK:
 457                 case PKCS8_NO_OCTET:
 458
 459                 if (!ASN1_pack_string_of(ASN1_INTEGER,prkey, i2d_ASN1_INTEGER,
 460                                          &p8->pkey->value.octet_string)) {
 461                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 462                         goto err;
 463                 }
 464
 465                 M_ASN1_INTEGER_free (prkey);
 466                 prkey = NULL;
 467                 p8->pkeyalg->parameter->value.sequence = params;
 468                 params = NULL;
 469                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 470
 471                 break;
 472
 473                 case PKCS8_NS_DB:
 474
 475                 p8->pkeyalg->parameter->value.sequence = params;
 476                 params = NULL;
 477                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 478                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 479                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 480                         goto err;
 481                 }
 482                 if (!(ttmp = ASN1_TYPE_new())) {
 483                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 484                         goto err;
 485                 }
 486                 if (!(ttmp->value.integer =
 487                         BN_to_ASN1_INTEGER(pkey->pkey.dsa->pub_key, NULL))) {
 488                         EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 489                         goto err;
 490                 }
 491                 ttmp->type = V_ASN1_INTEGER;
 492                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 493                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 494                         goto err;
 495                 }
 496
 497                 if (!(ttmp = ASN1_TYPE_new())) {
 498                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 499                         goto err;
 500                 }
 501                 ttmp->value.integer = prkey;
 502                 prkey = NULL;
 503                 ttmp->type = V_ASN1_INTEGER;
 504                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 505                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 506                         goto err;
 507                 }
 508                 ttmp = NULL;
 509
 510                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 511                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 512                         goto err;
 513                 }
 514
 515                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 516                                          &p8->pkey->value.octet_string->data,
 517                                          &p8->pkey->value.octet_string->length)) {
 518
 519                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 520                         goto err;
 521                 }
 522                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 523                 break;
 524
 525                 case PKCS8_EMBEDDED_PARAM:
 526
 527                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 528                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 529                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 530                         goto err;
 531                 }
 532                 if (!(ttmp = ASN1_TYPE_new())) {
 533                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 534                         goto err;
 535                 }
 536                 ttmp->value.sequence = params;
 537                 params = NULL;
 538                 ttmp->type = V_ASN1_SEQUENCE;
 539                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 540                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 541                         goto err;
 542                 }
 543
 544                 if (!(ttmp = ASN1_TYPE_new())) {
 545                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 546                         goto err;
 547                 }
 548                 ttmp->value.integer = prkey;
 549                 prkey = NULL;
 550                 ttmp->type = V_ASN1_INTEGER;
 551                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 552                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 553                         goto err;
 554                 }
 555                 ttmp = NULL;
 556
 557                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 558                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 559                         goto err;
 560                 }
 561
 562                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 563                                          &p8->pkey->value.octet_string->data,
 564                                          &p8->pkey->value.octet_string->length)) {
 565
 566                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 567                         goto err;
 568                 }
 569                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 570                 break;
 571         }
 572         return 1;
 573 err:
 574         if (p != NULL) OPENSSL_free(p);
 575         if (params != NULL) ASN1_STRING_free(params);
 576         if (prkey != NULL) M_ASN1_INTEGER_free(prkey);
 577         if (ttmp != NULL) ASN1_TYPE_free(ttmp);
 578         if (ndsa != NULL) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 579         return 0;
 580 }
 581 #endif
 582
 583 #ifndef OPENSSL_NO_EC
 584 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 585 {
 586         EC_KEY          *eckey;
 587         unsigned char   *p, *pp;
 588         int             nid, i, ret = 0;
 589         unsigned int    tmp_flags;
 590
 591         if (pkey->pkey.eckey == NULL || pkey->pkey.eckey->group == NULL)
 592         {
 593                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 594                 return 0;
 595         }
 596         eckey = pkey->pkey.eckey;
 597
 598         /* set the ec parameters OID */
 599         if (p8->pkeyalg->algorithm)
 600                 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
 601
 602         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
 603
 604         /* set the ec parameters */
 605
 606         if (p8->pkeyalg->parameter)
 607         {
 608                 ASN1_TYPE_free(p8->pkeyalg->parameter);
 609                 p8->pkeyalg->parameter = NULL;
 610         }
 611
 612         if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
 613         {
 614                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 615                 return 0;
 616         }
 617
 618         if (EC_GROUP_get_asn1_flag(eckey->group)
 619                      && (nid = EC_GROUP_get_curve_name(eckey->group)))
 620         {
 621                 /* we have a 'named curve' => just set the OID */
 622                 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
 623                 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
 624         }
 625         else    /* explicit parameters */
 626         {
 627                 if ((i = i2d_ECParameters(eckey, NULL)) == 0)
 628                 {
 629                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 630                         return 0;
 631                 }
 632                 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
 633                 {
 634                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 635                         return 0;
 636                 }
 637                 pp = p;
 638                 if (!i2d_ECParameters(eckey, &pp))
 639                 {
 640                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 641                         OPENSSL_free(p);
 642                         return 0;
 643                 }
 644                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 645                 if ((p8->pkeyalg->parameter->value.sequence
 646                         = ASN1_STRING_new()) == NULL)
 647                 {
 648                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
 649                         OPENSSL_free(p);
 650                         return 0;
 651                 }
 652                 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
 653                 OPENSSL_free(p);
 654         }
 655
 656         /* set the private key */
 657
 658         /* do not include the parameters in the SEC1 private key
 659          * see PKCS#11 12.11 */
 660         tmp_flags  = pkey->pkey.eckey->enc_flag;
 661         pkey->pkey.eckey->enc_flag |= EC_PKEY_NO_PARAMETERS;
 662         i = i2d_ECPrivateKey(pkey->pkey.eckey, NULL);
 663         if (!i)
 664         {
 665                 pkey->pkey.eckey->enc_flag = tmp_flags;
 666                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 667                 return 0;
 668         }
 669         p = (unsigned char *) OPENSSL_malloc(i);
 670         if (!p)
 671         {
 672                 pkey->pkey.eckey->enc_flag = tmp_flags;
 673                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 674                 return 0;
 675         }
 676         pp = p;
 677         if (!i2d_ECPrivateKey(pkey->pkey.eckey, &pp))
 678         {
 679                 pkey->pkey.eckey->enc_flag = tmp_flags;
 680                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 681                 OPENSSL_free(p);
 682                 return 0;
 683         }
 684         /* restore old encoding flags */
 685         pkey->pkey.eckey->enc_flag = tmp_flags;
 686
 687         switch(p8->broken) {
 688
 689                 case PKCS8_OK:
 690                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 691                 if (!p8->pkey->value.octet_string ||
 692                     !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,
 693                     (const void *)p, i))
 694
 695                 {
 696                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 697                 }
 698                 else
 699                         ret = 1;
 700                 break;
 701                 case PKCS8_NO_OCTET:            /* RSA specific */
 702                 case PKCS8_NS_DB:               /* DSA specific */
 703                 case PKCS8_EMBEDDED_PARAM:      /* DSA specific */
 704                 default:
 705                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 706         }
 707         OPENSSL_cleanse(p, (size_t)i);
 708         OPENSSL_free(p);
 709         return ret;
 710 }
 711 #endif