crypto/asn1/x_pkey.c

   1 /* crypto/asn1/x_pkey.c */
   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 "cryptlib.h"
  61 #include <openssl/evp.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/asn1_mac.h>
  64 #include <openssl/x509.h>
  65
  66 /* need to implement */
  67 int i2d_X509_PKEY(X509_PKEY *a, unsigned char **pp)
  68 {
  69     return (0);
  70 }
  71
  72 X509_PKEY *d2i_X509_PKEY(X509_PKEY **a, const unsigned char **pp, long length)
  73 {
  74     int i;
  75     M_ASN1_D2I_vars(a, X509_PKEY *, X509_PKEY_new);
  76
  77     M_ASN1_D2I_Init();
  78     M_ASN1_D2I_start_sequence();
  79     M_ASN1_D2I_get_x(X509_ALGOR, ret->enc_algor, d2i_X509_ALGOR);
  80     M_ASN1_D2I_get_x(ASN1_OCTET_STRING, ret->enc_pkey, d2i_ASN1_OCTET_STRING);
  81
  82     ret->cipher.cipher =
  83         EVP_get_cipherbyname(OBJ_nid2ln
  84                              (OBJ_obj2nid(ret->enc_algor->algorithm)));
  85     if (ret->cipher.cipher == NULL) {
  86         c.error = ASN1_R_UNSUPPORTED_CIPHER;
  87         c.line = __LINE__;
  88         goto err;
  89     }
  90     if (ret->enc_algor->parameter->type == V_ASN1_OCTET_STRING) {
  91         i = ret->enc_algor->parameter->value.octet_string->length;
  92         if (i > EVP_MAX_IV_LENGTH) {
  93             c.error = ASN1_R_IV_TOO_LARGE;
  94             c.line = __LINE__;
  95             goto err;
  96         }
  97         memcpy(ret->cipher.iv,
  98                ret->enc_algor->parameter->value.octet_string->data, i);
  99     } else
 100         memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
 101     M_ASN1_D2I_Finish(a, X509_PKEY_free, ASN1_F_D2I_X509_PKEY);
 102 }
 103
 104 X509_PKEY *X509_PKEY_new(void)
 105 {
 106     X509_PKEY *ret = NULL;
 107     ASN1_CTX c;
 108
 109     M_ASN1_New_Malloc(ret, X509_PKEY);
 110     ret->version = 0;
 111     M_ASN1_New(ret->enc_algor, X509_ALGOR_new);
 112     M_ASN1_New(ret->enc_pkey, M_ASN1_OCTET_STRING_new);
 113     ret->dec_pkey = NULL;
 114     ret->key_length = 0;
 115     ret->key_data = NULL;
 116     ret->key_free = 0;
 117     ret->cipher.cipher = NULL;
 118     memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
 119     ret->references = 1;
 120     return (ret);
 121     M_ASN1_New_Error(ASN1_F_X509_PKEY_NEW);
 122 }
 123
 124 void X509_PKEY_free(X509_PKEY *x)
 125 {
 126     int i;
 127
 128     if (x == NULL)
 129         return;
 130
 131     i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_X509_PKEY);
 132 #ifdef REF_PRINT
 133     REF_PRINT("X509_PKEY", x);
 134 #endif
 135     if (i > 0)
 136         return;
 137 #ifdef REF_CHECK
 138     if (i < 0) {
 139         fprintf(stderr, "X509_PKEY_free, bad reference count\n");
 140         abort();
 141     }
 142 #endif
 143
 144     if (x->enc_algor != NULL)
 145         X509_ALGOR_free(x->enc_algor);
 146     if (x->enc_pkey != NULL)
 147         M_ASN1_OCTET_STRING_free(x->enc_pkey);
 148     if (x->dec_pkey != NULL)
 149         EVP_PKEY_free(x->dec_pkey);
 150     if ((x->key_data != NULL) && (x->key_free))
 151         OPENSSL_free(x->key_data);
 152     OPENSSL_free(x);
 153 }