3 * $Id: blowfish.h,v 1.3 1997/08/07 09:43:20 mdw Exp $
5 * Blowfish encryption routines
7 * (c) 1997 Mark Wooding
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of `become'
14 * `Become' is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * `Become' is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with `become'; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Revision history --------------------------------------------------*
31 * $Log: blowfish.h,v $
32 * Revision 1.3 1997/08/07 09:43:20 mdw
33 * Fix address of the FSF.
35 * Revision 1.2 1997/08/04 10:24:20 mdw
36 * Sources placed under CVS control.
38 * Revision 1.1 1997/07/21 13:47:53 mdw
50 /*----- Type definitions --------------------------------------------------*/
52 /* --- A blowfish expanded key --- */
54 typedef struct blowfish_key {
62 /*----- Functions provided ------------------------------------------------*/
64 /* --- @blowfish_encrypt@ --- *
66 * Arguments: @const blowfish_key *k@ = pointer to key block
67 * @const voic *from@ = block to encrypt from
68 * @void *to@ = block to encrypt to
72 * Use: Encrypts a block using the Blowfish algorithm.
75 extern void blowfish_encrypt(const blowfish_key */*k*/,
76 const void */*from*/, void */*to*/);
79 /* --- @blowfish_decrypt@ --- *
81 * Arguments: @const blowfish_key *k@ = pointer to key block
82 * @const void *from@ = block to decrypt from
83 * @void *to@ = block to decrypt to
87 * Use: Decrypts a block using the Blowfish algorithm.
90 extern void blowfish_decrypt(const blowfish_key */*k*/,
91 const void */*from*/, void */*to*/);
93 /* --- @blowfish_setKey@ --- *
95 * Arguments: @blowfish_key *kb@ = pointer to key block to fill
96 * @void *k@ = pointer to key data
97 * @size_t sz@ = length of data in bytes
101 * Use: Expands a key which isn't represented as a number of whole
102 * words. This is a nonstandard extension, although it can be
103 * used to support 40-bit keys, which some governments might
104 * find more palatable than 160-bit (or 448-bit!) keys.
107 extern void blowfish_setKey(blowfish_key */*kb*/,
108 const void */*k*/, size_t /*sz*/);
110 /*----- That's all, folks -------------------------------------------------*/