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