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/*
* This file is part of ipif, part of userv-utils
*
* Copyright 1996-2013 Ian Jackson <ijackson@chiark.greenend.org.uk>
* Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
* Copyright 1999,2003
* Chancellor Masters and Scholars of the University of Cambridge
* Copyright 2010 Tony Finch <fanf@dotat.at>
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with userv-utils; if not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "blowfish.h"
static void checkrw(int r, int exp_r, const char *op, FILE *f) {
if (ferror(f)) { perror(op); exit(3); }
if (feof(f)) { fprintf(stderr,"unexpected eof on %s\n",op); exit(2); }
assert(r==exp_r);
}
int main(void) {
struct blowfish_cbc_state cbc;
unsigned char keybuf[BLOWFISH_MAXKEYBYTES], ivbuf[BLOWFISH_BLOCKBYTES];
unsigned char ibuf[BLOWFISH_BLOCKBYTES], obuf[BLOWFISH_BLOCKBYTES];
int r;
r= fread(keybuf,1,sizeof(keybuf),stdin); checkrw(r,sizeof(keybuf),"input",stdin);
blowfish_loadkey(&cbc.ek,keybuf,sizeof(keybuf));
r= fread(ibuf,1,sizeof(ivbuf),stdin); checkrw(r,sizeof(ivbuf),"input",stdin);
blowfish_cbc_setiv(&cbc,ivbuf);
for (;;) {
r= fread(ibuf,1,sizeof(ibuf),stdin); if (r<sizeof(ibuf) && r>=0) break;
checkrw(r,sizeof(ibuf),"input",stdin);
blowfish_cbc_encrypt(&cbc,ibuf,obuf);
r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
}
memset(ibuf+r,sizeof(ibuf)-r,sizeof(ibuf)-r);
blowfish_cbc_encrypt(&cbc,ibuf,obuf);
r= fwrite(obuf,1,sizeof(obuf),stdout); checkrw(r,sizeof(obuf),"output",stdout);
return 0;
};
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