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                         EC_GROUP *group;
 254                         cp = p = param->value.object->data;
 255                         plen = param->value.object->length;
 256
 257                         /* type == V_ASN1_OBJECT => the parameters are given
 258                          * by an asn1 OID
 259                          */
 260                         if ((eckey = EC_KEY_new()) == NULL)
 261                         {
 262                                 EVPerr(EVP_F_EVP_PKCS82PKEY,
 263                                         ERR_R_MALLOC_FAILURE);
 264                                 goto ecerr;
 265                         }
 266                         group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object));
 267                         if (group == NULL)
 268                                 goto ecerr;
 269                         EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
 270                         if (EC_KEY_set_group(eckey, group) == 0)
 271                                 goto ecerr;
 272                         EC_GROUP_free(group);
 273                 }
 274
 275                 /* We have parameters now set private key */
 276                 if (!d2i_ECPrivateKey(&eckey, &p_tmp, pkeylen))
 277                 {
 278                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 279                         goto ecerr;
 280                 }
 281
 282                 /* calculate public key (if necessary) */
 283                 if (EC_KEY_get0_public_key(eckey) == NULL)
 284                 {
 285                         const BIGNUM *priv_key;
 286                         const EC_GROUP *group;
 287                         EC_POINT *pub_key;
 288                         /* the public key was not included in the SEC1 private
 289                          * key => calculate the public key */
 290                         group   = EC_KEY_get0_group(eckey);
 291                         pub_key = EC_POINT_new(group);
 292                         if (pub_key == NULL)
 293                         {
 294                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 295                                 goto ecerr;
 296                         }
 297                         if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group)))
 298                         {
 299                                 EC_POINT_free(pub_key);
 300                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 301                                 goto ecerr;
 302                         }
 303                         priv_key = EC_KEY_get0_private_key(eckey);
 304                         if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))
 305                         {
 306                                 EC_POINT_free(pub_key);
 307                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 308                                 goto ecerr;
 309                         }
 310                         if (EC_KEY_set_public_key(eckey, pub_key) == 0)
 311                         {
 312                                 EC_POINT_free(pub_key);
 313                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 314                                 goto ecerr;
 315                         }
 316                         EC_POINT_free(pub_key);
 317                 }
 318
 319                 EVP_PKEY_assign_EC_KEY(pkey, eckey);
 320                 if (ctx)
 321                         BN_CTX_free(ctx);
 322                 break;
 323 ecerr:
 324                 if (ctx)
 325                         BN_CTX_free(ctx);
 326                 if (eckey)
 327                         EC_KEY_free(eckey);
 328                 if (pkey)
 329                         EVP_PKEY_free(pkey);
 330                 return NULL;
 331 #endif
 332                 default:
 333                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 334                 if (!a->algorithm) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
 335                 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
 336                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 337                 EVP_PKEY_free (pkey);
 338                 return NULL;
 339         }
 340         return pkey;
 341 }
 342
 343 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
 344 {
 345         return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
 346 }
 347
 348 /* Turn a private key into a PKCS8 structure */
 349
 350 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
 351 {
 352         PKCS8_PRIV_KEY_INFO *p8;
 353
 354         if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
 355                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 356                 return NULL;
 357         }
 358         p8->broken = broken;
 359         if (!ASN1_INTEGER_set(p8->version, 0)) {
 360                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 361                 PKCS8_PRIV_KEY_INFO_free (p8);
 362                 return NULL;
 363         }
 364         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 365                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 366                 PKCS8_PRIV_KEY_INFO_free (p8);
 367                 return NULL;
 368         }
 369         p8->pkey->type = V_ASN1_OCTET_STRING;
 370         switch (EVP_PKEY_type(pkey->type)) {
 371 #ifndef OPENSSL_NO_RSA
 372                 case EVP_PKEY_RSA:
 373
 374                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 375
 376                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 377                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 378                 if (!ASN1_pack_string_of (EVP_PKEY,pkey, i2d_PrivateKey,
 379                                          &p8->pkey->value.octet_string)) {
 380                         EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
 381                         PKCS8_PRIV_KEY_INFO_free (p8);
 382                         return NULL;
 383                 }
 384                 break;
 385 #endif
 386 #ifndef OPENSSL_NO_DSA
 387                 case EVP_PKEY_DSA:
 388                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 389                         PKCS8_PRIV_KEY_INFO_free (p8);
 390                         return NULL;
 391                 }
 392
 393                 break;
 394 #endif
 395 #ifndef OPENSSL_NO_EC
 396                 case EVP_PKEY_EC:
 397                 if (!eckey_pkey2pkcs8(p8, pkey))
 398                 {
 399                         PKCS8_PRIV_KEY_INFO_free(p8);
 400                         return(NULL);
 401                 }
 402                 break;
 403 #endif
 404                 default:
 405                 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 406                 PKCS8_PRIV_KEY_INFO_free (p8);
 407                 return NULL;
 408         }
 409         RAND_add(p8->pkey->value.octet_string->data,
 410                  p8->pkey->value.octet_string->length, 0.0);
 411         return p8;
 412 }
 413
 414 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 415 {
 416         switch (broken) {
 417
 418                 case PKCS8_OK:
 419                 p8->broken = PKCS8_OK;
 420                 return p8;
 421                 break;
 422
 423                 case PKCS8_NO_OCTET:
 424                 p8->broken = PKCS8_NO_OCTET;
 425                 p8->pkey->type = V_ASN1_SEQUENCE;
 426                 return p8;
 427                 break;
 428
 429                 default:
 430                 EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 431                 return NULL;
 432         }
 433 }
 434
 435 #ifndef OPENSSL_NO_DSA
 436 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 437 {
 438         ASN1_STRING *params = NULL;
 439         ASN1_INTEGER *prkey = NULL;
 440         ASN1_TYPE *ttmp = NULL;
 441         STACK_OF(ASN1_TYPE) *ndsa = NULL;
 442         unsigned char *p = NULL, *q;
 443         int len;
 444
 445         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 446         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 447         if (!(p = OPENSSL_malloc(len))) {
 448                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 449                 goto err;
 450         }
 451         q = p;
 452         i2d_DSAparams (pkey->pkey.dsa, &q);
 453         if (!(params = ASN1_STRING_new())) {
 454                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 455                 goto err;
 456         }
 457         if (!ASN1_STRING_set(params, p, len)) {
 458                 EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 459                 goto err;
 460         }
 461         OPENSSL_free(p);
 462         p = NULL;
 463         /* Get private key into integer */
 464         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 465                 EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 466                 goto err;
 467         }
 468
 469         switch(p8->broken) {
 470
 471                 case PKCS8_OK:
 472                 case PKCS8_NO_OCTET:
 473
 474                 if (!ASN1_pack_string_of(ASN1_INTEGER,prkey, i2d_ASN1_INTEGER,
 475                                          &p8->pkey->value.octet_string)) {
 476                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 477                         goto err;
 478                 }
 479
 480                 M_ASN1_INTEGER_free (prkey);
 481                 prkey = NULL;
 482                 p8->pkeyalg->parameter->value.sequence = params;
 483                 params = NULL;
 484                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 485
 486                 break;
 487
 488                 case PKCS8_NS_DB:
 489
 490                 p8->pkeyalg->parameter->value.sequence = params;
 491                 params = NULL;
 492                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 493                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 494                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 495                         goto err;
 496                 }
 497                 if (!(ttmp = ASN1_TYPE_new())) {
 498                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 499                         goto err;
 500                 }
 501                 if (!(ttmp->value.integer =
 502                         BN_to_ASN1_INTEGER(pkey->pkey.dsa->pub_key, NULL))) {
 503                         EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 504                         goto err;
 505                 }
 506                 ttmp->type = V_ASN1_INTEGER;
 507                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 508                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 509                         goto err;
 510                 }
 511
 512                 if (!(ttmp = ASN1_TYPE_new())) {
 513                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 514                         goto err;
 515                 }
 516                 ttmp->value.integer = prkey;
 517                 prkey = NULL;
 518                 ttmp->type = V_ASN1_INTEGER;
 519                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 520                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 521                         goto err;
 522                 }
 523                 ttmp = NULL;
 524
 525                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 526                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 527                         goto err;
 528                 }
 529
 530                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 531                                          &p8->pkey->value.octet_string->data,
 532                                          &p8->pkey->value.octet_string->length)) {
 533
 534                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 535                         goto err;
 536                 }
 537                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 538                 break;
 539
 540                 case PKCS8_EMBEDDED_PARAM:
 541
 542                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 543                 if (!(ndsa = sk_ASN1_TYPE_new_null())) {
 544                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 545                         goto err;
 546                 }
 547                 if (!(ttmp = ASN1_TYPE_new())) {
 548                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 549                         goto err;
 550                 }
 551                 ttmp->value.sequence = params;
 552                 params = NULL;
 553                 ttmp->type = V_ASN1_SEQUENCE;
 554                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 555                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 556                         goto err;
 557                 }
 558
 559                 if (!(ttmp = ASN1_TYPE_new())) {
 560                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 561                         goto err;
 562                 }
 563                 ttmp->value.integer = prkey;
 564                 prkey = NULL;
 565                 ttmp->type = V_ASN1_INTEGER;
 566                 if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {
 567                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 568                         goto err;
 569                 }
 570                 ttmp = NULL;
 571
 572                 if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {
 573                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 574                         goto err;
 575                 }
 576
 577                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 578                                          &p8->pkey->value.octet_string->data,
 579                                          &p8->pkey->value.octet_string->length)) {
 580
 581                         EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 582                         goto err;
 583                 }
 584                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 585                 break;
 586         }
 587         return 1;
 588 err:
 589         if (p != NULL) OPENSSL_free(p);
 590         if (params != NULL) ASN1_STRING_free(params);
 591         if (prkey != NULL) M_ASN1_INTEGER_free(prkey);
 592         if (ttmp != NULL) ASN1_TYPE_free(ttmp);
 593         if (ndsa != NULL) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 594         return 0;
 595 }
 596 #endif
 597
 598 #ifndef OPENSSL_NO_EC
 599 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 600 {
 601         EC_KEY          *ec_key;
 602         const EC_GROUP  *group;
 603         unsigned char   *p, *pp;
 604         int             nid, i, ret = 0;
 605         unsigned int    tmp_flags, old_flags;
 606
 607         ec_key = pkey->pkey.ec;
 608         if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL)
 609         {
 610                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 611                 return 0;
 612         }
 613
 614         /* set the ec parameters OID */
 615         if (p8->pkeyalg->algorithm)
 616                 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
 617
 618         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
 619
 620         /* set the ec parameters */
 621
 622         if (p8->pkeyalg->parameter)
 623         {
 624                 ASN1_TYPE_free(p8->pkeyalg->parameter);
 625                 p8->pkeyalg->parameter = NULL;
 626         }
 627
 628         if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
 629         {
 630                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 631                 return 0;
 632         }
 633
 634         if (EC_GROUP_get_asn1_flag(group)
 635                      && (nid = EC_GROUP_get_curve_name(group)))
 636         {
 637                 /* we have a 'named curve' => just set the OID */
 638                 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
 639                 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
 640         }
 641         else    /* explicit parameters */
 642         {
 643                 if ((i = i2d_ECParameters(ec_key, NULL)) == 0)
 644                 {
 645                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 646                         return 0;
 647                 }
 648                 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
 649                 {
 650                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 651                         return 0;
 652                 }
 653                 pp = p;
 654                 if (!i2d_ECParameters(ec_key, &pp))
 655                 {
 656                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 657                         OPENSSL_free(p);
 658                         return 0;
 659                 }
 660                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 661                 if ((p8->pkeyalg->parameter->value.sequence
 662                         = ASN1_STRING_new()) == NULL)
 663                 {
 664                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
 665                         OPENSSL_free(p);
 666                         return 0;
 667                 }
 668                 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
 669                 OPENSSL_free(p);
 670         }
 671
 672         /* set the private key */
 673
 674         /* do not include the parameters in the SEC1 private key
 675          * see PKCS#11 12.11 */
 676         old_flags = EC_KEY_get_enc_flags(pkey->pkey.ec);
 677         tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS;
 678         EC_KEY_set_enc_flags(pkey->pkey.ec, tmp_flags);
 679         i = i2d_ECPrivateKey(pkey->pkey.ec, NULL);
 680         if (!i)
 681         {
 682                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 683                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 684                 return 0;
 685         }
 686         p = (unsigned char *) OPENSSL_malloc(i);
 687         if (!p)
 688         {
 689                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 690                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 691                 return 0;
 692         }
 693         pp = p;
 694         if (!i2d_ECPrivateKey(pkey->pkey.ec, &pp))
 695         {
 696                 EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 697                 EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);
 698                 OPENSSL_free(p);
 699                 return 0;
 700         }
 701         /* restore old encoding flags */
 702         EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);
 703
 704         switch(p8->broken) {
 705
 706                 case PKCS8_OK:
 707                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 708                 if (!p8->pkey->value.octet_string ||
 709                     !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,
 710                     (const void *)p, i))
 711
 712                 {
 713                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 714                 }
 715                 else
 716                         ret = 1;
 717                 break;
 718                 case PKCS8_NO_OCTET:            /* RSA specific */
 719                 case PKCS8_NS_DB:               /* DSA specific */
 720                 case PKCS8_EMBEDDED_PARAM:      /* DSA specific */
 721                 default:
 722                         EVPerr(EVP_F_ECKEY_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 723         }
 724         OPENSSL_cleanse(p, (size_t)i);
 725         OPENSSL_free(p);
 726         return ret;
 727 }
 728 #endif
 729
 730 /* EVP_PKEY attribute functions */
 731
 732 int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
 733 {
 734         return X509at_get_attr_count(key->attributes);
 735 }
 736
 737 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,
 738                           int lastpos)
 739 {
 740         return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
 741 }
 742
 743 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,
 744                           int lastpos)
 745 {
 746         return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
 747 }
 748
 749 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
 750 {
 751         return X509at_get_attr(key->attributes, loc);
 752 }
 753
 754 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
 755 {
 756         return X509at_delete_attr(key->attributes, loc);
 757 }
 758
 759 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
 760 {
 761         if(X509at_add1_attr(&key->attributes, attr)) return 1;
 762         return 0;
 763 }
 764
 765 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
 766                         const ASN1_OBJECT *obj, int type,
 767                         const unsigned char *bytes, int len)
 768 {
 769         if(X509at_add1_attr_by_OBJ(&key->attributes, obj,
 770                                 type, bytes, len)) return 1;
 771         return 0;
 772 }
 773
 774 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
 775                         int nid, int type,
 776                         const unsigned char *bytes, int len)
 777 {
 778         if(X509at_add1_attr_by_NID(&key->attributes, nid,
 779                                 type, bytes, len)) return 1;
 780         return 0;
 781 }
 782
 783 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
 784                         const char *attrname, int type,
 785                         const unsigned char *bytes, int len)
 786 {
 787         if(X509at_add1_attr_by_txt(&key->attributes, attrname,
 788                                 type, bytes, len)) return 1;
 789         return 0;
 790 }