crypto/openssl-0.9/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 #ifndef OPENSSL_NO_RSA
  65 #include <openssl/rsa.h>
  66 #endif
  67 #ifndef OPENSSL_NO_DSA
  68 #include <openssl/dsa.h>
  69 #endif
  70 #include <openssl/bn.h>
  71
  72 #ifndef OPENSSL_NO_DSA
  73 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  74 #endif
  75 #ifndef OPENSSL_NO_EC
  76 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  77 #endif
  78
  79 /* Extract a private key from a PKCS8 structure */
  80
  81 EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)
  82 {
  83         EVP_PKEY *pkey = NULL;
  84 #ifndef OPENSSL_NO_RSA
  85         RSA *rsa = NULL;
  86 #endif
  87 #ifndef OPENSSL_NO_DSA
  88         DSA *dsa = NULL;
  89         ASN1_TYPE *t1, *t2;
  90         ASN1_INTEGER *privkey;
  91         STACK_OF(ASN1_TYPE) *ndsa = NULL;
  92 #endif
  93 #ifndef OPENSSL_NO_EC
  94         EC_KEY *eckey = NULL;
  95         const unsigned char *p_tmp;
  96 #endif
  97 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
  98         ASN1_TYPE    *param = NULL;
  99         BN_CTX *ctx = NULL;
 100         int plen;
 101 #endif
 102         X509_ALGOR *a;
 103         const unsigned char *p;
 104         const unsigned char *cp;
 105         int pkeylen;
 106         int  nid;
 107         char obj_tmp[80];
 108
 109         if(p8->pkey->type == V_ASN1_OCTET_STRING) {
 110                 p8->broken = PKCS8_OK;
 111                 p = p8->pkey->value.octet_string->data;
 112                 pkeylen = p8->pkey->value.octet_string->length;
 113         } else {
 114                 p8->broken = PKCS8_NO_OCTET;
 115                 p = p8->pkey->value.sequence->data;
 116                 pkeylen = p8->pkey->value.sequence->length;
 117         }
 118         if (!(pkey = EVP_PKEY_new())) {
 119                 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 120                 return NULL;
 121         }
 122         a = p8->pkeyalg;
 123         nid = OBJ_obj2nid(a->algorithm);
 124         switch(nid)
 125         {
 126 #ifndef OPENSSL_NO_RSA
 127                 case NID_rsaEncryption:
 128                 cp = p;
 129                 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
 130                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 131                         return NULL;
 132                 }
 133                 EVP_PKEY_assign_RSA (pkey, rsa);
 134                 break;
 135 #endif
 136 #ifndef OPENSSL_NO_DSA
 137                 case NID_dsa:
 138                 /* PKCS#8 DSA is weird: you just get a private key integer
 139                  * and parameters in the AlgorithmIdentifier the pubkey must
 140                  * be recalculated.
 141                  */
 142
 143                 /* Check for broken DSA PKCS#8, UGH! */
 144                 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
 145                     if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
 146                                                           d2i_ASN1_TYPE,
 147                                                           ASN1_TYPE_free))) {
 148                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 149                         goto dsaerr;
 150                     }
 151                     if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
 152                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 153                         goto dsaerr;
 154                     }
 155                     /* Handle Two broken types:
 156                      * SEQUENCE {parameters, priv_key}
 157                      * SEQUENCE {pub_key, priv_key}
 158                      */
 159
 160                     t1 = sk_ASN1_TYPE_value(ndsa, 0);
 161                     t2 = sk_ASN1_TYPE_value(ndsa, 1);
 162                     if(t1->type == V_ASN1_SEQUENCE) {
 163                         p8->broken = PKCS8_EMBEDDED_PARAM;
 164                         param = t1;
 165                     } else if(a->parameter->type == V_ASN1_SEQUENCE) {
 166                         p8->broken = PKCS8_NS_DB;
 167                         param = a->parameter;
 168                     } else {
 169                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 170                         goto dsaerr;
 171                     }
 172
 173                     if(t2->type != V_ASN1_INTEGER) {
 174                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 175                         goto dsaerr;
 176                     }
 177                     privkey = t2->value.integer;
 178                 } else {
 179                         if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
 180                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 181                                 goto dsaerr;
 182                         }
 183                         param = p8->pkeyalg->parameter;
 184                 }
 185                 if (!param || (param->type != V_ASN1_SEQUENCE)) {
 186                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 187                         goto dsaerr;
 188                 }
 189                 cp = p = param->value.sequence->data;
 190                 plen = param->value.sequence->length;
 191                 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
 192                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 193                         goto dsaerr;
 194                 }
 195                 /* We have parameters now set private key */
 196                 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
 197                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
 198                         goto dsaerr;
 199                 }
 200                 /* Calculate public key (ouch!) */
 201                 if (!(dsa->pub_key = BN_new())) {
 202                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 203                         goto dsaerr;
 204                 }
 205                 if (!(ctx = BN_CTX_new())) {
 206                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 207                         goto dsaerr;
 208                 }
 209
 210                 if (!BN_mod_exp(dsa->pub_key, dsa->g,
 211                                                  dsa->priv_key, dsa->p, ctx)) {
 212
 213                         EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
 214                         goto dsaerr;
 215                 }
 216
 217                 EVP_PKEY_assign_DSA(pkey, dsa);
 218                 BN_CTX_free (ctx);
 219                 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 220                 else ASN1_INTEGER_free(privkey);
 221                 break;
 222                 dsaerr:
 223                 BN_CTX_free (ctx);
 224                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 225                 DSA_free(dsa);
 226                 EVP_PKEY_free(pkey);
 227                 return NULL;
 228                 break;
 229 #endif
 230 #ifndef OPENSSL_NO_EC
 231                 case NID_X9_62_id_ecPublicKey:
 232                 p_tmp = p;
 233                 /* extract the ec parameters */
 234                 param = p8->pkeyalg->parameter;
 235
 236                 if (!param || ((param->type != V_ASN1_SEQUENCE) &&
 237                     (param->type != V_ASN1_OBJECT)))
 238                 {
 239                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 240                         goto ecerr;
 241                 }
 242
 243                 if (param->type == V_ASN1_SEQUENCE)
 244                 {
 245                         cp = p = param->value.sequence->data;
 246                         plen = param->value.sequence->length;
 247
 248                         if (!(eckey = d2i_ECParameters(NULL, &cp, plen)))
 249                         {
 250                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 251                                         EVP_R_DECODE_ERROR);
 252                                 goto ecerr;
 253                         }
 254                 }
 255                 else
 256                 {
 257                         EC_GROUP *group;
 258                         cp = p = param->value.object->data;
 259                         plen = param->value.object->length;
 260
 261                         /* type == V_ASN1_OBJECT => the parameters are given
 262                          * by an asn1 OID
 263                          */
 264                         if ((eckey = EC_KEY_new()) == NULL)
 265                         {
 266                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 267                                         ERR_R_MALLOC_FAILURE);
 268                                 goto ecerr;
 269                         }
 270                         group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object));
 271                         if (group == NULL)
 272                                 goto ecerr;
 273                         EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
 274                         if (EC_KEY_set_group(eckey, group) == 0)
 275                                 goto ecerr;
 276                         EC_GROUP_free(group);
 277                 }
 278
 279                 /* We have parameters now set private key */
 280                 if (!d2i_ECPrivateKey(&eckey, &p_tmp, pkeylen))
 281                 {
 282                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 283                         goto ecerr;
 284                 }
 285
 286                 /* calculate public key (if necessary) */
 287                 if (EC_KEY_get0_public_key(eckey) == NULL)
 288                 {
 289                         const BIGNUM *priv_key;
 290                         const EC_GROUP *group;
 291                         EC_POINT *pub_key;
 292                         /* the public key was not included in the SEC1 private
 293                          * key => calculate the public key */
 294                         group   = EC_KEY_get0_group(eckey);
 295                         pub_key = EC_POINT_new(group);
 296                         if (pub_key == NULL)
 297                         {
 298                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 299                                 goto ecerr;
 300                         }
 301                         if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group)))
 302                         {
 303                                 EC_POINT_free(pub_key);
 304                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 305                                 goto ecerr;
 306                         }
 307                         priv_key = EC_KEY_get0_private_key(eckey);
 308                         if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))
 309                         {
 310                                 EC_POINT_free(pub_key);
 311                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 312                                 goto ecerr;
 313                         }
 314                         if (EC_KEY_set_public_key(eckey, pub_key) == 0)
 315                         {
 316                                 EC_POINT_free(pub_key);
 317                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 318                                 goto ecerr;
 319                         }
 320                         EC_POINT_free(pub_key);
 321                 }
 322
 323                 EVP_PKEY_assign_EC_KEY(pkey, eckey);
 324                 if (ctx)
 325                         BN_CTX_free(ctx);
 326                 break;
 327 ecerr:
 328                 if (ctx)
 329                         BN_CTX_free(ctx);
 330                 if (eckey)
 331                         EC_KEY_free(eckey);
 332                 if (pkey)
 333                         EVP_PKEY_free(pkey);
 334                 return NULL;
 335 #endif
 336                 default:
 337                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 338                 if (!a->algorithm) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
 339                 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
 340                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 341                 EVP_PKEY_free (pkey);
 342                 return NULL;
 343         }
 344         return pkey;
 345 }
 346
 347 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
 348 {
 349         return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
 350 }
 351
 352 /* Turn a private key into a PKCS8 structure */
 353
 354 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
 355 {
 356         PKCS8_PRIV_KEY_INFO *p8;
 357
 358         if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
 359                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 360                 return NULL;
 361         }
 362         p8->broken = broken;
 363         if (!ASN1_INTEGER_set(p8->version, 0)) {
 364                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 365                 PKCS8_PRIV_KEY_INFO_free (p8);
 366                 return NULL;
 367         }
 368         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 369                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 370                 PKCS8_PRIV_KEY_INFO_free (p8);
 371                 return NULL;
 372         }
 373         p8->pkey->type = V_ASN1_OCTET_STRING;
 374         switch (EVP_PKEY_type(pkey->type)) {
 375 #ifndef OPENSSL_NO_RSA
 376                 case EVP_PKEY_RSA:
 377
 378                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 379
 380                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 381                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 382                 if (!ASN1_pack_string_of (EVP_PKEY,pkey, i2d_PrivateKey,
 383                                          &p8->pkey->value.octet_string)) {
 384                         EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 385                         PKCS8_PRIV_KEY_INFO_free (p8);
 386                         return NULL;
 387                 }
 388                 break;
 389 #endif
 390 #ifndef OPENSSL_NO_DSA
 391                 case EVP_PKEY_DSA:
 392                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 393                         PKCS8_PRIV_KEY_INFO_free (p8);
 394                         return NULL;
 395                 }
 396
 397                 break;
 398 #endif
 399 #ifndef OPENSSL_NO_EC
 400                 case EVP_PKEY_EC:
 401                 if (!eckey_pkey2pkcs8(p8, pkey))
 402                 {
 403                         PKCS8_PRIV_KEY_INFO_free(p8);
 404                         return(NULL);
 405                 }
 406                 break;
 407 #endif
 408                 default:
 409                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 410                 PKCS8_PRIV_KEY_INFO_free (p8);
 411                 return NULL;
 412         }
 413         RAND_add(p8->pkey->value.octet_string->data,
 414                  p8->pkey->value.octet_string->length, 0.0);
 415         return p8;
 416 }
 417
 418 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 419 {
 420         switch (broken) {
 421
 422                 case PKCS8_OK:
 423                 p8->broken = PKCS8_OK;
 424                 return p8;
 425                 break;
 426
 427                 case PKCS8_NO_OCTET:
 428                 p8->broken = PKCS8_NO_OCTET;
 429                 p8->pkey->type = V_ASN1_SEQUENCE;
 430                 return p8;
 431                 break;
 432
 433                 default:
 434                 EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 435                 return NULL;
 436         }
 437 }
 438
 439 #ifndef OPENSSL_NO_DSA
 440 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 441 {
 442         ASN1_STRING *params = NULL;
 443         ASN1_INTEGER *prkey = NULL;
 444         ASN1_TYPE *ttmp = NULL;
 445         STACK_OF(ASN1_TYPE) *ndsa = NULL;
 446         unsigned char *p = NULL, *q;
 447         int len;
 448
 449         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 450         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 451         if (!(p = OPENSSL_malloc(len))) {
 452                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 453                 goto err;
 454         }
 455         q = p;
 456         i2d_DSAparams (pkey->pkey.dsa, &q);
 457         if (!(params = ASN1_STRING_new())) {
 458                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 459                 goto err;
 460         }
 461         if (!ASN1_STRING_set(params, p, len)) {
 462                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 463                 goto err;
 464         }
 465         OPENSSL_free(p);
 466         p = NULL;
 467         /* Get private key into integer */
 468         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 469                 EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 470                 goto err;
 471         }
 472
 473         switch(p8->broken) {
 474
 475                 case PKCS8_OK:
 476                 case PKCS8_NO_OCTET:
 477
 478                 if (!ASN1_pack_string_of(ASN1_INTEGER,prkey, i2d_ASN1_INTEGER,
 479                                          &p8->pkey->value.octet_string)) {
 480                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 481                         goto err;
 482                 }
 483
 484                 M_ASN1_INTEGER_free (prkey);
 485                 prkey = NULL;
 486                 p8->pkeyalg->parameter->value.sequence = params;
 487                 params = NULL;
 488                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 489
 490                 break;
 491
 492                 case PKCS8_NS_DB:
 493
 494                 p8->pkeyalg->parameter->value.sequence = params;
 495                 params = NULL;
 496                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 497                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 498                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 499                         goto err;
 500                 }
 501                 if (!(ttmp = ASN1_TYPE_new())) {
 502                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 503                         goto err;
 504                 }
 505                 if (!(ttmp->value.integer =
 506                         BN_to_ASN1_INTEGER(pkey->pkey.dsa->pub_key, NULL))) {
 507                         EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 508                         goto err;
 509                 }
 510                 ttmp->type = V_ASN1_INTEGER;
 511                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 512                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 513                         goto err;
 514                 }
 515
 516                 if (!(ttmp = ASN1_TYPE_new())) {
 517                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 518                         goto err;
 519                 }
 520                 ttmp->value.integer = prkey;
 521                 prkey = NULL;
 522                 ttmp->type = V_ASN1_INTEGER;
 523                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 524                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 525                         goto err;
 526                 }
 527                 ttmp = NULL;
 528
 529                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 530                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 531                         goto err;
 532                 }
 533
 534                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 535                                          &p8->pkey->value.octet_string->data,
 536                                          &p8->pkey->value.octet_string->length)) {
 537
 538                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 539                         goto err;
 540                 }
 541                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 542                 break;
 543
 544                 case PKCS8_EMBEDDED_PARAM:
 545
 546                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 547                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 548                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 549                         goto err;
 550                 }
 551                 if (!(ttmp = ASN1_TYPE_new())) {
 552                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 553                         goto err;
 554                 }
 555                 ttmp->value.sequence = params;
 556                 params = NULL;
 557                 ttmp->type = V_ASN1_SEQUENCE;
 558                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 559                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 560                         goto err;
 561                 }
 562
 563                 if (!(ttmp = ASN1_TYPE_new())) {
 564                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 565                         goto err;
 566                 }
 567                 ttmp->value.integer = prkey;
 568                 prkey = NULL;
 569                 ttmp->type = V_ASN1_INTEGER;
 570                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 571                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 572                         goto err;
 573                 }
 574                 ttmp = NULL;
 575
 576                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 577                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 578                         goto err;
 579                 }
 580
 581                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 582                                          &p8->pkey->value.octet_string->data,
 583                                          &p8->pkey->value.octet_string->length)) {
 584
 585                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 586                         goto err;
 587                 }
 588                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 589                 break;
 590         }
 591         return 1;
 592 err:
 593         if (p != NULL) OPENSSL_free(p);
 594         if (params != NULL) ASN1_STRING_free(params);
 595         if (prkey != NULL) M_ASN1_INTEGER_free(prkey);
 596         if (ttmp != NULL) ASN1_TYPE_free(ttmp);
 597         if (ndsa != NULL) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 598         return 0;
 599 }
 600 #endif
 601
 602 #ifndef OPENSSL_NO_EC
 603 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 604 {
 605         EC_KEY          *ec_key;
 606         const EC_GROUP  *group;
 607         unsigned char   *p, *pp;
 608         int             nid, i, ret = 0;
 609         unsigned int    tmp_flags, old_flags;
 610
 611         ec_key = pkey->pkey.ec;
 612         if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL)
 613         {
 614                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 615                 return 0;
 616         }
 617
 618         /* set the ec parameters OID */
 619         if (p8->pkeyalg->algorithm)
 620                 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
 621
 622         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
 623
 624         /* set the ec parameters */
 625
 626         if (p8->pkeyalg->parameter)
 627         {
 628                 ASN1_TYPE_free(p8->pkeyalg->parameter);
 629                 p8->pkeyalg->parameter = NULL;
 630         }
 631
 632         if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
 633         {
 634                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 635                 return 0;
 636         }
 637
 638         if (EC_GROUP_get_asn1_flag(group)
 639                      && (nid = EC_GROUP_get_curve_name(group)))
 640         {
 641                 /* we have a 'named curve' => just set the OID */
 642                 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
 643                 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
 644         }
 645         else    /* explicit parameters */
 646         {
 647                 if ((i = i2d_ECParameters(ec_key, NULL)) == 0)
 648                 {
 649                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 650                         return 0;
 651                 }
 652                 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
 653                 {
 654                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 655                         return 0;
 656                 }
 657                 pp = p;
 658                 if (!i2d_ECParameters(ec_key, &pp))
 659                 {
 660                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 661                         OPENSSL_free(p);
 662                         return 0;
 663                 }
 664                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 665                 if ((p8->pkeyalg->parameter->value.sequence
 666                         = ASN1_STRING_new()) == NULL)
 667                 {
 668                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
 669                         OPENSSL_free(p);
 670                         return 0;
 671                 }
 672                 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
 673                 OPENSSL_free(p);
 674         }
 675
 676         /* set the private key */
 677
 678         /* do not include the parameters in the SEC1 private key
 679          * see PKCS#11 12.11 */
 680         old_flags = EC_KEY_get_enc_flags(pkey->pkey.ec);
 681         tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS;
 682         EC_KEY_set_enc_flags(pkey->pkey.ec, tmp_flags);
 683         i = i2d_ECPrivateKey(pkey->pkey.ec, NULL);
 684         if (!i)
 685         {
 686                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 687                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 688                 return 0;
 689         }
 690         p = (unsigned char *) OPENSSL_malloc(i);
 691         if (!p)
 692         {
 693                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 694                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 695                 return 0;
 696         }
 697         pp = p;
 698         if (!i2d_ECPrivateKey(pkey->pkey.ec, &pp))
 699         {
 700                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 701                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 702                 OPENSSL_free(p);
 703                 return 0;
 704         }
 705         /* restore old encoding flags */
 706         EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 707
 708         switch(p8->broken) {
 709
 710                 case PKCS8_OK:
 711                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 712                 if (!p8->pkey->value.octet_string ||
 713                     !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,
 714                     (const void *)p, i))
 715
 716                 {
 717                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 718                 }
 719                 else
 720                         ret = 1;
 721                 break;
 722                 case PKCS8_NO_OCTET:            /* RSA specific */
 723                 case PKCS8_NS_DB:               /* DSA specific */
 724                 case PKCS8_EMBEDDED_PARAM:      /* DSA specific */
 725                 default:
 726                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 727         }
 728         OPENSSL_cleanse(p, (size_t)i);
 729         OPENSSL_free(p);
 730         return ret;
 731 }
 732 #endif
 733
 734 /* EVP_PKEY attribute functions */
 735
 736 int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
 737 {
 738         return X509at_get_attr_count(key->attributes);
 739 }
 740
 741 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,
 742                           int lastpos)
 743 {
 744         return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
 745 }
 746
 747 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,
 748                           int lastpos)
 749 {
 750         return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
 751 }
 752
 753 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
 754 {
 755         return X509at_get_attr(key->attributes, loc);
 756 }
 757
 758 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
 759 {
 760         return X509at_delete_attr(key->attributes, loc);
 761 }
 762
 763 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
 764 {
 765         if(X509at_add1_attr(&key->attributes, attr)) return 1;
 766         return 0;
 767 }
 768
 769 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
 770                         const ASN1_OBJECT *obj, int type,
 771                         const unsigned char *bytes, int len)
 772 {
 773         if(X509at_add1_attr_by_OBJ(&key->attributes, obj,
 774                                 type, bytes, len)) return 1;
 775         return 0;
 776 }
 777
 778 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
 779                         int nid, int type,
 780                         const unsigned char *bytes, int len)
 781 {
 782         if(X509at_add1_attr_by_NID(&key->attributes, nid,
 783                                 type, bytes, len)) return 1;
 784         return 0;
 785 }
 786
 787 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
 788                         const char *attrname, int type,
 789                         const unsigned char *bytes, int len)
 790 {
 791         if(X509at_add1_attr_by_txt(&key->attributes, attrname,
 792                                 type, bytes, len)) return 1;
 793         return 0;
 794 }