text: /*
   * Copyright 1995-2016 The Opentls Project Authors. All Rights Reserved.
   *
   * Licensed under the Apache License 2.0 (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.opentls.org/source/license.html
   */
  
  #include <stdio.h>
  #include <time.h>
  #include <sys/types.h>
  
  #include "internal/cryptlib.h"
  
  #include <opentls/err.h>
  #include <opentls/evp.h>
  #include <opentls/buffer.h>
  #include <opentls/x509.h>
  
  #ifndef NO_ASN1_OLD
  
  int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
                  unsigned char *md, unsigned int *len)
  {
      int inl;
      unsigned char *str, *p;
  
      inl = i2d(data, NULL);
      if (inl <= 0) {
          ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_INTERNAL_ERROR);
          return 0;
      }
      if ((str = OPENtls_malloc(inl)) == NULL) {
          ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_MALLOC_FAILURE);
          return 0;
      }
      p = str;
      i2d(data, &p);
  
      if (!EVP_Digest(str, inl, md, len, type, NULL)) {
          OPENtls_free(str);
          return 0;
      }
      OPENtls_free(str);
      return 1;
  }
  
  #endif
  
  int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,
                       unsigned char *md, unsigned int *len)
  {
      int i;
      unsigned char *str = NULL;
  
      i = ASN1_item_i2d(asn, &str, it);
      if (!str)
          return 0;
  
      if (!EVP_Digest(str, i, md, len, type, NULL)) {
          OPENtls_free(str);
          return 0;
      }
      OPENtls_free(str);
      return 1;
  }
  