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

   1 /*
   2  * Copyright (C) 1997,2000,2003 Ian Jackson
   3  * This file is part of ipif, part of userv-utils
   4  *
   5  * This is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with userv-utils; if not, write to the Free Software
  17  * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <stdio.h>
  21 #include <assert.h>
  22 #include <string.h>
  23
  24 #include "blowfish.h"
  25
  26 static void checkrw(int r, int exp_r, const char *op, FILE *f) {
  27   if (ferror(f)) { perror(op); exit(3); }
  28   if (feof(f)) { fprintf(stderr,"unexpected eof on %s\n",op); exit(2); }
  29   assert(r==exp_r);
  30 }
  31
  32 int main(void) {
  33   struct blowfish_cbc_state cbc;
  34   unsigned char keybuf[BLOWFISH_MAXKEYBYTES], ivbuf[BLOWFISH_BLOCKBYTES];
  35   unsigned char ibuf[BLOWFISH_BLOCKBYTES], obuf[BLOWFISH_BLOCKBYTES];
  36   int r;
  37
  38   r= fread(keybuf,1,sizeof(keybuf),stdin); checkrw(r,sizeof(keybuf),"input",stdin);
  39   blowfish_loadkey(&cbc.ek,keybuf,sizeof(keybuf));
  40
  41   r= fread(ibuf,1,sizeof(ivbuf),stdin); checkrw(r,sizeof(ivbuf),"input",stdin);
  42   blowfish_cbc_setiv(&cbc,ivbuf);
  43
  44   for (;;) {
  45     r= fread(ibuf,1,sizeof(ibuf),stdin); if (r<sizeof(ibuf) && r>=0) break;
  46     checkrw(r,sizeof(ibuf),"input",stdin);
  47     blowfish_cbc_encrypt(&cbc,ibuf,obuf);
  48     r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
  49   }
  50   memset(ibuf+r,sizeof(ibuf)-r,sizeof(ibuf)-r);
  51   blowfish_cbc_encrypt(&cbc,ibuf,obuf);
  52   r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
  53   return 0;
  54 };