crypto/external/bsd/heimdal/dist/lib/hcrypto/common.c

   1 /*      $NetBSD: common.c,v 1.1.1.1 2011/04/13 18:14:49 elric Exp $     */
   2
   3 /*
   4  * Copyright (c) 2010 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include <config.h>
  39
  40 #include <errno.h>
  41
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44
  45 #include <krb5/krb5-types.h>
  46 #include <krb5/rfc2459_asn1.h>
  47 #include <hcrypto/bn.h>
  48
  49
  50 #include "common.h"
  51
  52 int
  53 _hc_BN_to_integer(BIGNUM *bn, heim_integer *integer)
  54 {
  55     integer->length = BN_num_bytes(bn);
  56     integer->data = malloc(integer->length);
  57     if (integer->data == NULL)
  58         return ENOMEM;
  59     BN_bn2bin(bn, integer->data);
  60     integer->negative = BN_is_negative(bn);
  61     return 0;
  62 }
  63
  64 BIGNUM *
  65 _hc_integer_to_BN(const heim_integer *i, BIGNUM *bn)
  66 {
  67     bn = BN_bin2bn(i->data, i->length, bn);
  68     if (bn)
  69         BN_set_negative(bn, i->negative);
  70     return bn;
  71 }