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
  65 #ifndef OPENSSL_NO_DSA
  66 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  67 #endif
  68 #ifndef OPENSSL_NO_ECDSA
  69 static int ecdsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
  70 #endif
  71
  72 /* Extract a private key from a PKCS8 structure */
  73
  74 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
  75 {
  76         EVP_PKEY *pkey = NULL;
  77 #ifndef OPENSSL_NO_RSA
  78         RSA *rsa = NULL;
  79 #endif
  80 #ifndef OPENSSL_NO_DSA
  81         DSA *dsa = NULL;
  82 #endif
  83 #ifndef OPENSSL_NO_ECDSA
  84         ECDSA    *ecdsa = NULL;
  85 #endif
  86 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
  87         ASN1_INTEGER *privkey;
  88         ASN1_TYPE    *t1, *t2, *param = NULL;
  89         STACK_OF(ASN1_TYPE) *n_stack = NULL;
  90         BN_CTX *ctx = NULL;
  91         int plen;
  92 #endif
  93         X509_ALGOR *a;
  94         unsigned char *p;
  95         const unsigned char *cp;
  96         int pkeylen;
  97         int  nid;
  98         char obj_tmp[80];
  99
 100         if(p8->pkey->type == V_ASN1_OCTET_STRING) {
 101                 p8->broken = PKCS8_OK;
 102                 p = p8->pkey->value.octet_string->data;
 103                 pkeylen = p8->pkey->value.octet_string->length;
 104         } else {
 105                 p8->broken = PKCS8_NO_OCTET;
 106                 p = p8->pkey->value.sequence->data;
 107                 pkeylen = p8->pkey->value.sequence->length;
 108         }
 109         if (!(pkey = EVP_PKEY_new())) {
 110                 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 111                 return NULL;
 112         }
 113         a = p8->pkeyalg;
 114         nid = OBJ_obj2nid(a->algorithm);
 115         switch(nid)
 116         {
 117 #ifndef OPENSSL_NO_RSA
 118                 case NID_rsaEncryption:
 119                 cp = p;
 120                 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
 121                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 122                         return NULL;
 123                 }
 124                 EVP_PKEY_assign_RSA (pkey, rsa);
 125                 break;
 126 #endif
 127 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
 128                 case NID_ecdsa_with_SHA1:
 129                 case NID_dsa:
 130                 /* PKCS#8 DSA/ECDSA is weird: you just get a private key integer
 131                  * and parameters in the AlgorithmIdentifier the pubkey must
 132                  * be recalculated.
 133                  */
 134
 135                 /* Check for broken DSA/ECDSA PKCS#8, UGH! */
 136                 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED))
 137                 {
 138                         if(!(n_stack = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
 139                                                           d2i_ASN1_TYPE,
 140                                                           ASN1_TYPE_free)))
 141                         {
 142                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 143                                 goto err;
 144                         }
 145                         if(sk_ASN1_TYPE_num(n_stack) != 2 )
 146                         {
 147                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 148                                 goto err;
 149                         }
 150                     /* Handle Two broken types:
 151                      * SEQUENCE {parameters, priv_key}
 152                      * SEQUENCE {pub_key, priv_key}
 153                      */
 154
 155                     t1 = sk_ASN1_TYPE_value(n_stack, 0);
 156                     t2 = sk_ASN1_TYPE_value(n_stack, 1);
 157                     if(t1->type == V_ASN1_SEQUENCE)
 158                     {
 159                         p8->broken = PKCS8_EMBEDDED_PARAM;
 160                         param = t1;
 161                     }
 162                     else if(a->parameter->type == V_ASN1_SEQUENCE)
 163                     {
 164                         p8->broken = PKCS8_NS_DB;
 165                         param = a->parameter;
 166                     }
 167                     else
 168                     {
 169                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 170                         goto err;
 171                     }
 172
 173                     if(t2->type != V_ASN1_INTEGER) {
 174                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 175                         goto err;
 176                     }
 177                     privkey = t2->value.integer;
 178                 }
 179                 else
 180                 {
 181                         if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen)))
 182                         {
 183                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 184                                 goto err;
 185                         }
 186                         param = p8->pkeyalg->parameter;
 187                 }
 188                 if (!param || (param->type != V_ASN1_SEQUENCE))
 189                 {
 190                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 191                         goto err;
 192                 }
 193                 cp = p = param->value.sequence->data;
 194                 plen = param->value.sequence->length;
 195                 if (!(ctx = BN_CTX_new()))
 196                 {
 197                         EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 198                         goto err;
 199                 }
 200                 if (nid == NID_dsa)
 201                 {
 202 #ifndef OPENSSL_NO_DSA
 203                         if (!(dsa = d2i_DSAparams (NULL, &cp, plen)))
 204                         {
 205                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 206                                 goto err;
 207                         }
 208                         /* We have parameters now set private key */
 209                         if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL)))
 210                         {
 211                                 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
 212                                 goto err;
 213                         }
 214                         /* Calculate public key (ouch!) */
 215                         if (!(dsa->pub_key = BN_new()))
 216                         {
 217                                 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
 218                                 goto err;
 219                         }
 220                         if (!BN_mod_exp(dsa->pub_key, dsa->g,
 221                                                  dsa->priv_key, dsa->p, ctx))
 222                         {
 223                                 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
 224                                 goto err;
 225                         }
 226
 227                         EVP_PKEY_assign_DSA(pkey, dsa);
 228                         BN_CTX_free(ctx);
 229                         if(n_stack) sk_ASN1_TYPE_pop_free(n_stack, ASN1_TYPE_free);
 230                         else ASN1_INTEGER_free(privkey);
 231 #else
 232                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 233                         goto err;
 234 #endif
 235                 }
 236                 else /* nid == NID_ecdsa_with_SHA1 */
 237                 {
 238 #ifndef OPENSSL_NO_ECDSA
 239                         if ((ecdsa = d2i_ECDSAParameters(NULL, &cp, plen)) == NULL)
 240                         {
 241                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 242                                 goto err;
 243                         }
 244                         if ((ecdsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL)) == NULL)
 245                         {
 246                                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
 247                                 goto err;
 248                         }
 249                         if ((ecdsa->pub_key = EC_POINT_new(ecdsa->group)) == NULL)
 250                         {
 251                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 252                                 goto err;
 253                         }
 254                         if (!EC_POINT_copy(ecdsa->pub_key, EC_GROUP_get0_generator(ecdsa->group)))
 255                         {
 256                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 257                                 goto err;
 258                         }
 259                         if (!EC_POINT_mul(ecdsa->group, ecdsa->pub_key, ecdsa->priv_key,
 260                                           NULL, NULL, ctx))
 261                         {
 262                                 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
 263                                 goto err;
 264                         }
 265
 266                         EVP_PKEY_assign_ECDSA(pkey, ecdsa);
 267                         BN_CTX_free(ctx);
 268                         if (n_stack) sk_ASN1_TYPE_pop_free(n_stack, ASN1_TYPE_free);
 269                         else
 270                                 ASN1_INTEGER_free(privkey);
 271 #else
 272                         EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 273                         goto err;
 274 #endif
 275                 }
 276                 break;
 277 err:
 278                 if (ctx)   BN_CTX_free(ctx);
 279                 sk_ASN1_TYPE_pop_free(n_stack, ASN1_TYPE_free);
 280 #ifndef OPENSSL_NO_DSA
 281                 if (dsa)   DSA_free(dsa);
 282 #endif
 283 #ifndef OPENSSL_NO_ECDSA
 284                 if (ecdsa) ECDSA_free(ecdsa);
 285 #endif
 286                 if (pkey)  EVP_PKEY_free(pkey);
 287                 return NULL;
 288                 break;
 289 #endif
 290                 default:
 291                 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 292                 if (!a->algorithm) strcpy (obj_tmp, "NULL");
 293                 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
 294                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 295                 EVP_PKEY_free (pkey);
 296                 return NULL;
 297         }
 298         return pkey;
 299 }
 300
 301 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
 302 {
 303         return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
 304 }
 305
 306 /* Turn a private key into a PKCS8 structure */
 307
 308 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
 309 {
 310         PKCS8_PRIV_KEY_INFO *p8;
 311
 312         if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
 313                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 314                 return NULL;
 315         }
 316         p8->broken = broken;
 317         ASN1_INTEGER_set (p8->version, 0);
 318         if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
 319                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 320                 PKCS8_PRIV_KEY_INFO_free (p8);
 321                 return NULL;
 322         }
 323         p8->pkey->type = V_ASN1_OCTET_STRING;
 324         switch (EVP_PKEY_type(pkey->type)) {
 325 #ifndef OPENSSL_NO_RSA
 326                 case EVP_PKEY_RSA:
 327
 328                 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
 329
 330                 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
 331                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 332                 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
 333                                          &p8->pkey->value.octet_string)) {
 334                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 335                         PKCS8_PRIV_KEY_INFO_free (p8);
 336                         return NULL;
 337                 }
 338                 break;
 339 #endif
 340 #ifndef OPENSSL_NO_DSA
 341                 case EVP_PKEY_DSA:
 342                 if(!dsa_pkey2pkcs8(p8, pkey)) {
 343                         PKCS8_PRIV_KEY_INFO_free (p8);
 344                         return NULL;
 345                 }
 346
 347                 break;
 348 #endif
 349 #ifndef OPENSSL_NO_ECDSA
 350                 case EVP_PKEY_ECDSA:
 351                 if (!ecdsa_pkey2pkcs8(p8, pkey))
 352                 {
 353                         PKCS8_PRIV_KEY_INFO_free(p8);
 354                         return(NULL);
 355                 }
 356                 break;
 357 #endif
 358                 default:
 359                 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
 360                 PKCS8_PRIV_KEY_INFO_free (p8);
 361                 return NULL;
 362         }
 363         RAND_add(p8->pkey->value.octet_string->data,
 364                  p8->pkey->value.octet_string->length, 0);
 365         return p8;
 366 }
 367
 368 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
 369 {
 370         switch (broken) {
 371
 372                 case PKCS8_OK:
 373                 p8->broken = PKCS8_OK;
 374                 return p8;
 375                 break;
 376
 377                 case PKCS8_NO_OCTET:
 378                 p8->broken = PKCS8_NO_OCTET;
 379                 p8->pkey->type = V_ASN1_SEQUENCE;
 380                 return p8;
 381                 break;
 382
 383                 default:
 384                 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
 385                 return NULL;
 386                 break;
 387
 388         }
 389 }
 390
 391 #ifndef OPENSSL_NO_DSA
 392 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 393 {
 394         ASN1_STRING *params;
 395         ASN1_INTEGER *prkey;
 396         ASN1_TYPE *ttmp;
 397         STACK_OF(ASN1_TYPE) *ndsa;
 398         unsigned char *p, *q;
 399         int len;
 400
 401         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
 402         len = i2d_DSAparams (pkey->pkey.dsa, NULL);
 403         if (!(p = OPENSSL_malloc(len))) {
 404                 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 405                 PKCS8_PRIV_KEY_INFO_free (p8);
 406                 return 0;
 407         }
 408         q = p;
 409         i2d_DSAparams (pkey->pkey.dsa, &q);
 410         params = ASN1_STRING_new();
 411         ASN1_STRING_set(params, p, len);
 412         OPENSSL_free(p);
 413         /* Get private key into integer */
 414         if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
 415                 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 416                 return 0;
 417         }
 418
 419         switch(p8->broken) {
 420
 421                 case PKCS8_OK:
 422                 case PKCS8_NO_OCTET:
 423
 424                 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
 425                                          &p8->pkey->value.octet_string)) {
 426                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 427                         M_ASN1_INTEGER_free (prkey);
 428                         return 0;
 429                 }
 430
 431                 M_ASN1_INTEGER_free (prkey);
 432                 p8->pkeyalg->parameter->value.sequence = params;
 433                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 434
 435                 break;
 436
 437                 case PKCS8_NS_DB:
 438
 439                 p8->pkeyalg->parameter->value.sequence = params;
 440                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 441                 ndsa = sk_ASN1_TYPE_new_null();
 442                 ttmp = ASN1_TYPE_new();
 443                 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
 444                         EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
 445                         PKCS8_PRIV_KEY_INFO_free(p8);
 446                         return 0;
 447                 }
 448                 ttmp->type = V_ASN1_INTEGER;
 449                 sk_ASN1_TYPE_push(ndsa, ttmp);
 450
 451                 ttmp = ASN1_TYPE_new();
 452                 ttmp->value.integer = prkey;
 453                 ttmp->type = V_ASN1_INTEGER;
 454                 sk_ASN1_TYPE_push(ndsa, ttmp);
 455
 456                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 457
 458                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 459                                          &p8->pkey->value.octet_string->data,
 460                                          &p8->pkey->value.octet_string->length)) {
 461
 462                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 463                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 464                         M_ASN1_INTEGER_free(prkey);
 465                         return 0;
 466                 }
 467                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 468                 break;
 469
 470                 case PKCS8_EMBEDDED_PARAM:
 471
 472                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 473                 ndsa = sk_ASN1_TYPE_new_null();
 474                 ttmp = ASN1_TYPE_new();
 475                 ttmp->value.sequence = params;
 476                 ttmp->type = V_ASN1_SEQUENCE;
 477                 sk_ASN1_TYPE_push(ndsa, ttmp);
 478
 479                 ttmp = ASN1_TYPE_new();
 480                 ttmp->value.integer = prkey;
 481                 ttmp->type = V_ASN1_INTEGER;
 482                 sk_ASN1_TYPE_push(ndsa, ttmp);
 483
 484                 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
 485
 486                 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
 487                                          &p8->pkey->value.octet_string->data,
 488                                          &p8->pkey->value.octet_string->length)) {
 489
 490                         EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
 491                         sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 492                         M_ASN1_INTEGER_free (prkey);
 493                         return 0;
 494                 }
 495                 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
 496                 break;
 497         }
 498         return 1;
 499 }
 500 #endif
 501
 502 #ifndef OPENSSL_NO_ECDSA
 503 static int ecdsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
 504 {
 505         ASN1_STRING       *params=NULL;
 506         ASN1_INTEGER      *prkey=NULL;
 507         ASN1_TYPE         *ttmp=NULL;
 508         STACK_OF(ASN1_TYPE) *necdsa=NULL;
 509         unsigned char     *p=NULL, *q=NULL;
 510         int len=0;
 511         EC_POINT          *point=NULL;
 512
 513         if (pkey->pkey.ecdsa == NULL || pkey->pkey.ecdsa->group == NULL)
 514         {
 515                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
 516                 return 0;
 517         }
 518         p8->pkeyalg->algorithm = OBJ_nid2obj(NID_ecdsa_with_SHA1);
 519         len = i2d_ECDSAParameters(pkey->pkey.ecdsa, NULL);
 520         if ((p = OPENSSL_malloc(len)) == NULL)
 521         {
 522                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 523                 return 0;
 524         }
 525         q = p;
 526         if (!i2d_ECDSAParameters(pkey->pkey.ecdsa, &q))
 527         {
 528                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_ECDSA_LIB);
 529                 OPENSSL_free(p);
 530                 return 0;
 531         }
 532         if ((params = ASN1_STRING_new()) == NULL)
 533         {
 534                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 535                 OPENSSL_free(p);
 536                 return 0;
 537
 538         }
 539         if (!ASN1_STRING_set(params, p, len))
 540         {
 541                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_ASN1_LIB);
 542                 OPENSSL_free(p);
 543                 return 0;
 544         }
 545         OPENSSL_free(p);
 546         if ((prkey = BN_to_ASN1_INTEGER(pkey->pkey.ecdsa->priv_key, NULL)) == NULL)
 547         {
 548                 EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_ASN1_LIB);
 549                 return 0;
 550         }
 551
 552         switch(p8->broken) {
 553
 554                 case PKCS8_OK:
 555                 case PKCS8_NO_OCTET:
 556
 557                 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
 558                                          &p8->pkey->value.octet_string))
 559                 {
 560                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 561                         M_ASN1_INTEGER_free(prkey);
 562                         return 0;
 563                 }
 564
 565                 ASN1_INTEGER_free(prkey);
 566                 p8->pkeyalg->parameter->value.sequence = params;
 567                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 568
 569                 break;
 570
 571                 case PKCS8_NS_DB:
 572
 573                 p8->pkeyalg->parameter->value.sequence = params;
 574                 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
 575                 necdsa = sk_ASN1_TYPE_new_null();
 576                 if (necdsa == NULL || (ttmp = ASN1_TYPE_new()) == NULL)
 577                 {
 578                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 579                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 580                         return 0;
 581                 }
 582
 583                 if ((point = EC_GROUP_get0_generator(pkey->pkey.ecdsa->group)) == NULL)
 584                 {
 585                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_EC_LIB);
 586                         return 0;
 587                 }
 588                 len = EC_POINT_point2oct(pkey->pkey.ecdsa->group, point, ECDSA_get_conversion_form(pkey->pkey.ecdsa),
 589                                          NULL, 0, NULL);
 590                 p = OPENSSL_malloc(len);
 591                 if (!len || !p || !EC_POINT_point2oct(pkey->pkey.ecdsa->group, point,
 592                         ECDSA_get_conversion_form(pkey->pkey.ecdsa), p, len, NULL))
 593                 {
 594                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_EC_LIB);
 595                         OPENSSL_free(p);
 596                         return 0;
 597                 }
 598                 if ((ttmp->value.octet_string = ASN1_OCTET_STRING_new()) == NULL)
 599                 {
 600                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 601                         return 0;
 602                 }
 603                 if (!ASN1_OCTET_STRING_set(ttmp->value.octet_string, p, len))
 604                 {
 605                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, EVP_R_ASN1_LIB);
 606                         return 0;
 607                 }
 608                 OPENSSL_free(p);
 609
 610                 ttmp->type = V_ASN1_OCTET_STRING;
 611                 if (!sk_ASN1_TYPE_push(necdsa, ttmp))
 612                 {
 613                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 614                         ASN1_INTEGER_free(prkey);
 615                         return 0;
 616                 }
 617
 618                 if ((ttmp = ASN1_TYPE_new()) == NULL)
 619                 {
 620                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 621                         return 0;
 622                 }
 623                 ttmp->value.integer = prkey;
 624                 ttmp->type = V_ASN1_INTEGER;
 625                 if (!sk_ASN1_TYPE_push(necdsa, ttmp))
 626                 {
 627                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 628                         ASN1_INTEGER_free(prkey);
 629                         return 0;
 630                 }
 631
 632                 if ((p8->pkey->value.octet_string = ASN1_OCTET_STRING_new()) == NULL)
 633                 {
 634                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 635                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 636                         return 0;
 637                 }
 638
 639                 if (!ASN1_seq_pack_ASN1_TYPE(necdsa, i2d_ASN1_TYPE,
 640                                          &p8->pkey->value.octet_string->data,
 641                                          &p8->pkey->value.octet_string->length))
 642                 {
 643
 644                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 645                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 646                         return 0;
 647                 }
 648                 sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 649                 break;
 650
 651                 case PKCS8_EMBEDDED_PARAM:
 652
 653                 p8->pkeyalg->parameter->type = V_ASN1_NULL;
 654                 necdsa = sk_ASN1_TYPE_new_null();
 655                 if ((ttmp = ASN1_TYPE_new()) == NULL)
 656                 {
 657                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 658                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 659                         ASN1_INTEGER_free(prkey);
 660                         return 0;
 661                 }
 662                 ttmp->value.sequence = params;
 663                 ttmp->type = V_ASN1_SEQUENCE;
 664                 if (!sk_ASN1_TYPE_push(necdsa, ttmp))
 665                 {
 666                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 667                         ASN1_INTEGER_free(prkey);
 668                         return 0;
 669                 }
 670
 671                 if ((ttmp = ASN1_TYPE_new()) == NULL)
 672                 {
 673                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 674                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 675                         ASN1_INTEGER_free(prkey);
 676                         return 0;
 677                 }
 678                 ttmp->value.integer = prkey;
 679                 ttmp->type = V_ASN1_INTEGER;
 680                 if (!sk_ASN1_TYPE_push(necdsa, ttmp))
 681                 {
 682                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 683                         ASN1_INTEGER_free(prkey);
 684                         return 0;
 685                 }
 686
 687                 if ((p8->pkey->value.octet_string = ASN1_OCTET_STRING_new()) == NULL)
 688                 {
 689                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 690                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 691                         return 0;
 692                 }
 693
 694                 if (!ASN1_seq_pack_ASN1_TYPE(necdsa, i2d_ASN1_TYPE,
 695                                          &p8->pkey->value.octet_string->data,
 696                                          &p8->pkey->value.octet_string->length))
 697                 {
 698                         EVPerr(EVP_F_ECDSA_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
 699                         sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 700                         return 0;
 701                 }
 702                 sk_ASN1_TYPE_pop_free(necdsa, ASN1_TYPE_free);
 703                 break;
 704         }
 705         return 1;
 706 }
 707 #endif