lib/crypto-null.c

   1 /* crypto-null.c        NULL crypto functions
   2  * Copyright (C) 2002, 2003  Simon Josefsson
   3  *
   4  * This file is part of Shishi.
   5  *
   6  * Shishi is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Shishi is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Shishi; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * Note: This file is #include'd by crypto.c.
  21  *
  22  */
  23
  24 static int
  25 null_encrypt (Shishi * handle,
  26               Shishi_key * key,
  27               int keyusage,
  28               const char *iv, size_t ivlen,
  29               char **ivout, size_t * ivoutlen,
  30               const char *in, size_t inlen, char **out, size_t * outlen)
  31 {
  32   *outlen = inlen;
  33   *out = xmalloc (*outlen);
  34   memcpy (*out, in, inlen);
  35
  36   if (ivout)
  37     *ivout = NULL;
  38   if (ivoutlen)
  39     *ivoutlen = 0;
  40
  41   return SHISHI_OK;
  42 }
  43
  44 static int
  45 null_decrypt (Shishi * handle,
  46               Shishi_key * key,
  47               int keyusage,
  48               const char *iv, size_t ivlen,
  49               char **ivout, size_t * ivoutlen,
  50               const char *in, size_t inlen, char **out, size_t * outlen)
  51 {
  52   *outlen = inlen;
  53   *out = xmalloc (*outlen);
  54   memcpy (*out, in, inlen);
  55
  56   if (ivout)
  57     *ivout = NULL;
  58   if (ivoutlen)
  59     *ivoutlen = 0;
  60
  61   return SHISHI_OK;
  62 }
  63
  64 static int
  65 null_random_to_key (Shishi * handle,
  66                     const char *random, size_t randomlen, Shishi_key * outkey)
  67 {
  68   return SHISHI_OK;
  69 }
  70
  71 static int
  72 null_string_to_key (Shishi * handle,
  73                     const char *password, size_t passwordlen,
  74                     const char *salt, size_t saltlen,
  75                     const char *parameter, Shishi_key * outkey)
  76 {
  77   return SHISHI_OK;
  78 }