1 /* crypto/asn1/a_digest.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 <time.h>
  61 
  62 #include "cryptlib.h"
  63 
  64 #ifndef NO_SYS_TYPES_H
  65 # include <sys/types.h>
  66 #endif
  67 
  68 #include <openssl/err.h>
  69 #include <openssl/evp.h>
  70 #include <openssl/buffer.h>
  71 #include <openssl/x509.h>
  72 
  73 #ifndef NO_ASN1_OLD
  74 
  75 int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
  76                 unsigned char *md, unsigned int *len)
  77         {
  78         int i;
  79         unsigned char *str,*p;
  80 
  81         i=i2d(data,NULL);
  82         if ((str=(unsigned char *)OPENSSL_malloc(i)) == NULL)
  83                 {
  84                 ASN1err(ASN1_F_ASN1_DIGEST,ERR_R_MALLOC_FAILURE);
  85                 return(0);
  86                 }
  87         p=str;
  88         i2d(data,&p);
  89 
  90         if (!EVP_Digest(str, i, md, len, type, NULL))
  91                 return 0;
  92         OPENSSL_free(str);
  93         return(1);
  94         }
  95 
  96 #endif
  97 
  98 
  99 int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,
 100                 unsigned char *md, unsigned int *len)
 101         {
 102         int i;
 103         unsigned char *str = NULL;
 104 
 105         i=ASN1_item_i2d(asn,&str, it);
 106         if (!str) return(0);
 107 
 108         if (!EVP_Digest(str, i, md, len, type, NULL))
 109                 return 0;
 110         OPENSSL_free(str);
 111         return(1);
 112         }