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1 | /* |
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2 | * Copyright (C) 1997,2000,2003 Ian Jackson |
3 | * This file is part of ipif, part of userv-utils |
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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 | */ |
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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 | }; |