lib/libcrypto/asn1/x_pkey.c

   1 /* $OpenBSD: x_pkey.c,v 1.20 2017/01/29 17:49:22 beck Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <string.h>
  61
  62 #include <openssl/err.h>
  63 #include <openssl/evp.h>
  64 #include <openssl/objects.h>
  65 #include <openssl/x509.h>
  66
  67 X509_PKEY *
  68 X509_PKEY_new(void)
  69 {
  70         X509_PKEY *ret = NULL;
  71
  72         if ((ret = malloc(sizeof(X509_PKEY))) == NULL) {
  73                 ASN1error(ERR_R_MALLOC_FAILURE);
  74                 goto err;
  75         }
  76         ret->version = 0;
  77         if ((ret->enc_algor = X509_ALGOR_new()) == NULL) {
  78                 ASN1error(ERR_R_MALLOC_FAILURE);
  79                 goto err;
  80         }
  81         if ((ret->enc_pkey = ASN1_OCTET_STRING_new()) == NULL) {
  82                 ASN1error(ERR_R_MALLOC_FAILURE);
  83                 goto err;
  84         }
  85         ret->dec_pkey = NULL;
  86         ret->key_length = 0;
  87         ret->key_data = NULL;
  88         ret->key_free = 0;
  89         ret->cipher.cipher = NULL;
  90         memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
  91         ret->references = 1;
  92         return (ret);
  93
  94 err:
  95         if (ret) {
  96                 X509_ALGOR_free(ret->enc_algor);
  97                 free(ret);
  98         }
  99         return NULL;
 100 }
 101
 102 void
 103 X509_PKEY_free(X509_PKEY *x)
 104 {
 105         int i;
 106
 107         if (x == NULL)
 108                 return;
 109
 110         i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_X509_PKEY);
 111         if (i > 0)
 112                 return;
 113
 114         if (x->enc_algor != NULL)
 115                 X509_ALGOR_free(x->enc_algor);
 116         ASN1_OCTET_STRING_free(x->enc_pkey);
 117         EVP_PKEY_free(x->dec_pkey);
 118         if ((x->key_data != NULL) && (x->key_free))
 119                 free(x->key_data);
 120         free(x);
 121 }