libdvdcss/css.h

   1 /*****************************************************************************
   2  * css.h: Structures for DVD authentication and unscrambling
   3  *****************************************************************************
   4  * Copyright (C) 1999-2001 VideoLAN
   5  * $Id$
   6  *
   7  * Author: Stéphane Borel <stef@via.ecp.fr>
   8  *
   9  * based on:
  10  *  - css-auth by Derek Fawcus <derek@spider.com>
  11  *  - DVD CSS ioctls example program by Andrew T. Veliath <andrewtv@usa.net>
  12  *  - DeCSSPlus by Ethan Hawke
  13  *  - The Divide and conquer attack by Frank A. Stevenson <frank@funcom.com>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  28  *****************************************************************************/
  29 #define KEY_SIZE 5
  30
  31 typedef uint8_t dvd_key_t[KEY_SIZE];
  32
  33 typedef struct dvd_title_s
  34 {
  35     int                 i_startlb;
  36     dvd_key_t           p_key;
  37     struct dvd_title_s *p_next;
  38 } dvd_title_t;
  39
  40 typedef struct css_s
  41 {
  42     int             i_agid;      /* Current Authenication Grant ID. */
  43     dvd_key_t       p_bus_key;   /* Current session key. */
  44     dvd_key_t       p_disc_key;  /* This DVD disc's key. */
  45     dvd_key_t       p_title_key; /* Current title key. */
  46 } css_t;
  47
  48 /*****************************************************************************
  49  * Prototypes in css.c
  50  *****************************************************************************/
  51 int   _dvdcss_test        ( dvdcss_t );
  52 int   _dvdcss_title       ( dvdcss_t, int );
  53 int   _dvdcss_disckey     ( dvdcss_t );
  54 int   _dvdcss_titlekey    ( dvdcss_t, int , dvd_key_t );
  55 int   _dvdcss_unscramble  ( uint8_t *, uint8_t * );
  56