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 "evp.h"
  62 #include "objects.h"
  63 #include "asn1_mac.h"
  64
  65 /* ASN1err(ASN1_F_D2I_X509_PKEY,ASN1_R_UNSUPPORTED_CIPHER); */
  66 /* ASN1err(ASN1_F_X509_PKEY_NEW,ASN1_R_IV_TOO_LARGE); */
  67
  68 /* need to implement */
  69 int i2d_X509_PKEY(X509_PKEY *a, unsigned char **pp)
  70         {
  71         return(0);
  72         }
  73
  74 X509_PKEY *d2i_X509_PKEY(X509_PKEY **a, unsigned char **pp, long length)
  75         {
  76         int i;
  77         M_ASN1_D2I_vars(a,X509_PKEY *,X509_PKEY_new);
  78
  79         M_ASN1_D2I_Init();
  80         M_ASN1_D2I_start_sequence();
  81         M_ASN1_D2I_get(ret->enc_algor,d2i_X509_ALGOR);
  82         M_ASN1_D2I_get(ret->enc_pkey,d2i_ASN1_OCTET_STRING);
  83
  84         ret->cipher.cipher=EVP_get_cipherbyname(
  85                 OBJ_nid2ln(OBJ_obj2nid(ret->enc_algor->algorithm)));
  86         if (ret->cipher.cipher == NULL)
  87                 {
  88                 c.error=ASN1_R_UNSUPPORTED_CIPHER;
  89                 c.line=__LINE__;
  90                 goto err;
  91                 }
  92         if (ret->enc_algor->parameter->type == V_ASN1_OCTET_STRING)
  93                 {
  94                 i=ret->enc_algor->parameter->value.octet_string->length;
  95                 if (i > EVP_MAX_IV_LENGTH)
  96                         {
  97                         c.error=ASN1_R_IV_TOO_LARGE;
  98                         c.line=__LINE__;
  99                         goto err;
 100                         }
 101                 memcpy(ret->cipher.iv,
 102                         ret->enc_algor->parameter->value.octet_string->data,i);
 103                 }
 104         else
 105                 memset(ret->cipher.iv,0,EVP_MAX_IV_LENGTH);
 106         M_ASN1_D2I_Finish(a,X509_PKEY_free,ASN1_F_D2I_X509_PKEY);
 107         }
 108
 109 X509_PKEY *X509_PKEY_new(void)
 110         {
 111         X509_PKEY *ret=NULL;
 112         ASN1_CTX c;
 113
 114         M_ASN1_New_Malloc(ret,X509_PKEY);
 115         ret->version=0;
 116         M_ASN1_New(ret->enc_algor,X509_ALGOR_new);
 117         M_ASN1_New(ret->enc_pkey,ASN1_OCTET_STRING_new);
 118         ret->dec_pkey=NULL;
 119         ret->key_length=0;
 120         ret->key_data=NULL;
 121         ret->key_free=0;
 122         ret->cipher.cipher=NULL;
 123         memset(ret->cipher.iv,0,EVP_MAX_IV_LENGTH);
 124         ret->references=1;
 125         return(ret);
 126         M_ASN1_New_Error(ASN1_F_X509_PKEY_NEW);
 127         }
 128
 129 void X509_PKEY_free(X509_PKEY *x)
 130         {
 131         int i;
 132
 133         if (x == NULL) return;
 134
 135         i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_X509_PKEY);
 136 #ifdef REF_PRINT
 137         REF_PRINT("X509_PKEY",x);
 138 #endif
 139         if (i > 0) return;
 140 #ifdef REF_CHECK
 141         if (i < 0)
 142                 {
 143                 fprintf(stderr,"X509_PKEY_free, bad reference count\n");
 144                 abort();
 145                 }
 146 #endif
 147
 148         if (x->enc_algor != NULL) X509_ALGOR_free(x->enc_algor);
 149         if (x->enc_pkey != NULL) ASN1_OCTET_STRING_free(x->enc_pkey);
 150         if (x->dec_pkey != NULL)EVP_PKEY_free(x->dec_pkey);
 151         if ((x->key_data != NULL) && (x->key_free)) Free((char *)x->key_data);
 152         Free((char *)(char *)x);
 153         }