lib/arc.h

   1 /***************************************************************************\
   2 *                                                                           *
   3 *  BitlBee - An IRC to IM gateway                                           *
   4 *  Simple (but secure) ArcFour implementation for safer password storage.   *
   5 *                                                                           *
   6 *  Copyright 2007 Wilmer van der Gaast <wilmer@gaast.net>                   *
   7 *                                                                           *
   8 *  This program is free software; you can redistribute it and/or modify     *
   9 *  it under the terms of the GNU General Public License as published by     *
  10 *  the Free Software Foundation; either version 2 of the License, or        *
  11 *  (at your option) any later version.                                      *
  12 *                                                                           *
  13 *  This program is distributed in the hope that it will be useful,          *
  14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
  15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
  16 *  GNU General Public License for more details.                             *
  17 *                                                                           *
  18 *  You should have received a copy of the GNU General Public License along  *
  19 *  with this program; if not, write to the Free Software Foundation, Inc.,  *
  20 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.              *
  21 *                                                                           *
  22 \***************************************************************************/
  23
  24
  25 /* See arc.c for more information. */
  26
  27 struct arc_state
  28 {
  29         unsigned char S[256];
  30         unsigned char i, j;
  31 };
  32
  33 #ifndef G_GNUC_MALLOC
  34 #define G_GNUC_MALLOC
  35 #endif
  36
  37 G_GNUC_MALLOC struct arc_state *arc_keymaker( unsigned char *key, int kl, int cycles );
  38 unsigned char arc_getbyte( struct arc_state *st );
  39 int arc_encode( char *clear, int clear_len, unsigned char **crypt, char *password, int pad_to );
  40 int arc_decode( unsigned char *crypt, int crypt_len, char **clear, char *password );