mdw@git.distorted.org.uk Git - userv-utils/blob - ipif/blowfishspeed.c

   1 /*
   2  * This file is part of ipif, part of userv-utils
   3  *
   4  * Copyright 1996-2013 Ian Jackson <ijackson@chiark.greenend.org.uk>
   5  * Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
   6  * Copyright 1999,2003
   7  *    Chancellor Masters and Scholars of the University of Cambridge
   8  * Copyright 2010 Tony Finch <fanf@dotat.at>
   9  *
  10  * This is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with userv-utils; if not, see http://www.gnu.org/licenses/.
  22  */
  23
  24 #include <stdio.h>
  25 #include <assert.h>
  26 #include <string.h>
  27
  28 #include "blowfish.h"
  29
  30 static void checkrw(int r, int exp_r, const char *op, FILE *f) {
  31   if (ferror(f)) { perror(op); exit(3); }
  32   if (feof(f)) { fprintf(stderr,"unexpected eof on %s\n",op); exit(2); }
  33   assert(r==exp_r);
  34 }
  35
  36 int main(void) {
  37   struct blowfish_cbc_state cbc;
  38   unsigned char keybuf[BLOWFISH_MAXKEYBYTES], ivbuf[BLOWFISH_BLOCKBYTES];
  39   unsigned char ibuf[BLOWFISH_BLOCKBYTES], obuf[BLOWFISH_BLOCKBYTES];
  40   int r;
  41
  42   r= fread(keybuf,1,sizeof(keybuf),stdin); checkrw(r,sizeof(keybuf),"input",stdin);
  43   blowfish_loadkey(&cbc.ek,keybuf,sizeof(keybuf));
  44
  45   r= fread(ibuf,1,sizeof(ivbuf),stdin); checkrw(r,sizeof(ivbuf),"input",stdin);
  46   blowfish_cbc_setiv(&cbc,ivbuf);
  47
  48   for (;;) {
  49     r= fread(ibuf,1,sizeof(ibuf),stdin); if (r<sizeof(ibuf) && r>=0) break;
  50     checkrw(r,sizeof(ibuf),"input",stdin);
  51     blowfish_cbc_encrypt(&cbc,ibuf,obuf);
  52     r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
  53   }
  54   memset(ibuf+r,sizeof(ibuf)-r,sizeof(ibuf)-r);
  55   blowfish_cbc_encrypt(&cbc,ibuf,obuf);
  56   r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
  57   return 0;
  58 };