tools/bftest.c

   1 /* bftest.c - Blowfish test program
   2  *      Copyright (C) 1998 Free Software Foundation, Inc.
   3  *
   4  * This file is part of GnuPG.
   5  *
   6  * GnuPG 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  * GnuPG 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 this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  19  */
  20
  21 #include <config.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #ifdef HAVE_DOSISH_SYSTEM
  26   #include <io.h>
  27   #include <fcntl.h>
  28 #endif
  29
  30 #include <gcrypt.h>
  31 #include "util.h"
  32 #include "i18n.h"
  33
  34 static void
  35 my_usage(void)
  36 {
  37     fprintf(stderr, "usage: bftest [-e][-d] algo mode key\n");
  38     exit(1);
  39 }
  40
  41
  42 static void
  43 i18n_init(void)
  44 {
  45   #ifdef ENABLE_NLS
  46     #ifdef HAVE_LC_MESSAGES
  47        setlocale( LC_MESSAGES, "" );
  48     #else
  49        setlocale( LC_ALL, "" );
  50     #endif
  51     bindtextdomain( PACKAGE, GNUPG_LOCALEDIR );
  52     textdomain( PACKAGE );
  53   #endif
  54 }
  55
  56 int
  57 main(int argc, char **argv)
  58 {
  59     int encode=0;
  60     GCRY_CIPHER_HD hd;
  61     char buf[4096];
  62     int rc, n, size=4096;
  63     int algo, mode;
  64     const char *s;
  65
  66   #ifdef HAVE_DOSISH_SYSTEM
  67     setmode( fileno(stdin), O_BINARY );
  68     setmode( fileno(stdout), O_BINARY );
  69   #endif
  70
  71     i18n_init();
  72     if( argc > 1 && !strcmp(argv[1], "-e") ) {
  73         encode++;
  74         argc--; argv++;
  75     }
  76     else if( argc > 1 && !strcmp(argv[1], "-E") ) {
  77         encode++;
  78         argc--; argv++;
  79         size = 10;
  80     }
  81     else if( argc > 1 && !strcmp(argv[1], "-d") ) {
  82         argc--; argv++;
  83     }
  84     else if( argc > 1 && !strcmp(argv[1], "-D") ) {
  85         argc--; argv++;
  86         size = 10;
  87     }
  88     if( argc != 4 )
  89         my_usage();
  90     argc--; argv++;
  91     algo = gcry_cipher_map_name( *argv );
  92     argc--; argv++;
  93     s = *argv; argc--; argv++;
  94     if ( !strcasecmp( s, "cfb" ) )
  95         mode = GCRY_CIPHER_MODE_CFB;
  96     else if ( !strcasecmp( s, "cbc" ) )
  97         mode = GCRY_CIPHER_MODE_CBC;
  98     else if ( !strcasecmp( s, "ebc" ) )
  99         mode = GCRY_CIPHER_MODE_ECB;
 100     else if ( !strcasecmp( s, "none" ) )
 101         mode = GCRY_CIPHER_MODE_NONE;
 102     else if ( !strcasecmp( s, "stream" ) )
 103         mode = GCRY_CIPHER_MODE_STREAM;
 104     else {
 105         fprintf( stderr,
 106                  "wrong mode; use one of:  none, ecb, cbc, cfb, stream\n");
 107         return 1;
 108     }
 109
 110     hd = gcry_cipher_open( algo, mode, 0 );
 111     if (!hd )
 112         log_fatal("cipher open failed: %s\n", gcry_strerror(-1) );
 113     rc = gcry_cipher_setkey( hd, *argv, strlen(*argv) );
 114     if ( rc )
 115         log_fatal("setkey failed: %s\n", gcry_strerror(rc) );
 116     gcry_cipher_setiv( hd, NULL, 0 );
 117     while( (n = fread( buf, 1, size, stdin )) > 0 ) {
 118         if( encode )
 119             gcry_cipher_encrypt( hd, buf, n, buf, n );
 120         else
 121             gcry_cipher_decrypt( hd, buf, n, buf, n );
 122         if( fwrite( buf, 1, n, stdout) != n )
 123             log_fatal("write error\n");
 124     }
 125     gcry_cipher_close(hd);
 126     return 0;
 127 }
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