Commit 16247a75 authored by Stéphane Borel's avatar Stéphane Borel
Browse files

-New more recent css authentication code.

-Beginning of udf support (not in Makefile)
parent 0f601455
......@@ -3,7 +3,7 @@
* Copyright (C) 2000 VideoLAN
* Authors:
* Authors: Samuel Hocevar <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -2,10 +2,18 @@
* dvd_css.c: Functions for DVD authentification and unscrambling
* Copyright (C) 1999-2001 VideoLAN
* $Id: dvd_css.c,v 1.8 2001/02/14 04:11:01 stef Exp $
* $Id: dvd_css.c,v 1.9 2001/02/15 21:03:27 stef Exp $
* Author: Stphane Borel <>
* based on:
* - css-auth by Derek Fawcus <>
* - DVD CSS ioctls example program by Andrew T. Veliath <>
* - The Divide and conquer attack by Frank A. Stevenson<>
* - DeCSSPlus by Ethan Hawke
* - DecVOB
* see by Tom Vogt for more information.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
......@@ -259,151 +267,145 @@ static u8 pi_css_tab5[256]=
0xe0, 0x60, 0xa0, 0x20, 0xc0, 0x40, 0x80, 0x00
/* Mangle tables usesd for key decryption */
static u8 pi_css_mangle0[256] =
0x00, 0x81, 0x03, 0x82, 0x06, 0x87, 0x05, 0x84,
0x0C, 0x8D, 0x0F, 0x8E, 0x0A, 0x8B, 0x09, 0x88,
0x18, 0x99, 0x1B, 0x9A, 0x1E, 0x9F, 0x1D, 0x9C,
0x14, 0x95, 0x17, 0x96, 0x12, 0x93, 0x11, 0x90,
0x30, 0xB1, 0x33, 0xB2, 0x36, 0xB7, 0x35, 0xB4,
0x3C, 0xBD, 0x3F, 0xBE, 0x3A, 0xBB, 0x39, 0xB8,
0x28, 0xA9, 0x2B, 0xAA, 0x2E, 0xAF, 0x2D, 0xAC,
0x24, 0xA5, 0x27, 0xA6, 0x22, 0xA3, 0x21, 0xA0,
0x60, 0xE1, 0x63, 0xE2, 0x66, 0xE7, 0x65, 0xE4,
0x6C, 0xED, 0x6F, 0xEE, 0x6A, 0xEB, 0x69, 0xE8,
0x78, 0xF9, 0x7B, 0xFA, 0x7E, 0xFF, 0x7D, 0xFC,
0x74, 0xF5, 0x77, 0xF6, 0x72, 0xF3, 0x71, 0xF0,
0x50, 0xD1, 0x53, 0xD2, 0x56, 0xD7, 0x55, 0xD4,
0x5C, 0xDD, 0x5F, 0xDE, 0x5A, 0xDB, 0x59, 0xD8,
0x48, 0xC9, 0x4B, 0xCA, 0x4E, 0xCF, 0x4D, 0xCC,
0x44, 0xC5, 0x47, 0xC6, 0x42, 0xC3, 0x41, 0xC0,
0xC0, 0x41, 0xC3, 0x42, 0xC6, 0x47, 0xC5, 0x44,
0xCC, 0x4D, 0xCF, 0x4E, 0xCA, 0x4B, 0xC9, 0x48,
0xD8, 0x59, 0xDB, 0x5A, 0xDE, 0x5F, 0xDD, 0x5C,
0xD4, 0x55, 0xD7, 0x56, 0xD2, 0x53, 0xD1, 0x50,
0xF0, 0x71, 0xF3, 0x72, 0xF6, 0x77, 0xF5, 0x74,
0xFC, 0x7D, 0xFF, 0x7E, 0xFA, 0x7B, 0xF9, 0x78,
0xE8, 0x69, 0xEB, 0x6A, 0xEE, 0x6F, 0xED, 0x6C,
0xE4, 0x65, 0xE7, 0x66, 0xE2, 0x63, 0xE1, 0x60,
0xA0, 0x21, 0xA3, 0x22, 0xA6, 0x27, 0xA5, 0x24,
0xAC, 0x2D, 0xAF, 0x2E, 0xAA, 0x2B, 0xA9, 0x28,
0xB8, 0x39, 0xBB, 0x3A, 0xBE, 0x3F, 0xBD, 0x3C,
0xB4, 0x35, 0xB7, 0x36, 0xB2, 0x33, 0xB1, 0x30,
0x90, 0x11, 0x93, 0x12, 0x96, 0x17, 0x95, 0x14,
0x9C, 0x1D, 0x9F, 0x1E, 0x9A, 0x1B, 0x99, 0x18,
0x88, 0x09, 0x8B, 0x0A, 0x8E, 0x0F, 0x8D, 0x0C,
0x84, 0x05, 0x87, 0x06, 0x82, 0x03, 0x81, 0x00
static u8 pi_css_mangle1[256] =
0xC4, 0xCD, 0xCE, 0xCB, 0xC8, 0xC9, 0xCA, 0xCF,
0xCC, 0xC5, 0xC6, 0xC3, 0xC0, 0xC1, 0xC2, 0xC7,
0x14, 0x1D, 0x1E, 0x1B, 0x18, 0x19, 0x1A, 0x1F,
0x1C, 0x15, 0x16, 0x13, 0x10, 0x11, 0x12, 0x17,
0x24, 0x2D, 0x2E, 0x2B, 0x28, 0x29, 0x2A, 0x2F,
0x2C, 0x25, 0x26, 0x23, 0x20, 0x21, 0x22, 0x27,
0x34, 0x3D, 0x3E, 0x3B, 0x38, 0x39, 0x3A, 0x3F,
0x3C, 0x35, 0x36, 0x33, 0x30, 0x31, 0x32, 0x37,
0x04, 0x0D, 0x0E, 0x0B, 0x08, 0x09, 0x0A, 0x0F,
0x0C, 0x05, 0x06, 0x03, 0x00, 0x01, 0x02, 0x07,
0xD4, 0xDD, 0xDE, 0xDB, 0xD8, 0xD9, 0xDA, 0xDF,
0xDC, 0xD5, 0xD6, 0xD3, 0xD0, 0xD1, 0xD2, 0xD7,
0xE4, 0xED, 0xEE, 0xEB, 0xE8, 0xE9, 0xEA, 0xEF,
0xEC, 0xE5, 0xE6, 0xE3, 0xE0, 0xE1, 0xE2, 0xE7,
0xF4, 0xFD, 0xFE, 0xFB, 0xF8, 0xF9, 0xFA, 0xFF,
0xFC, 0xF5, 0xF6, 0xF3, 0xF0, 0xF1, 0xF2, 0xF7,
0x44, 0x4D, 0x4E, 0x4B, 0x48, 0x49, 0x4A, 0x4F,
0x4C, 0x45, 0x46, 0x43, 0x40, 0x41, 0x42, 0x47,
0x94, 0x9D, 0x9E, 0x9B, 0x98, 0x99, 0x9A, 0x9F,
0x9C, 0x95, 0x96, 0x93, 0x90, 0x91, 0x92, 0x97,
0xA4, 0xAD, 0xAE, 0xAB, 0xA8, 0xA9, 0xAA, 0xAF,
0xAC, 0xA5, 0xA6, 0xA3, 0xA0, 0xA1, 0xA2, 0xA7,
0xB4, 0xBD, 0xBE, 0xBB, 0xB8, 0xB9, 0xBA, 0xBF,
0xBC, 0xB5, 0xB6, 0xB3, 0xB0, 0xB1, 0xB2, 0xB7,
0x84, 0x8D, 0x8E, 0x8B, 0x88, 0x89, 0x8A, 0x8F,
0x8C, 0x85, 0x86, 0x83, 0x80, 0x81, 0x82, 0x87,
0x54, 0x5D, 0x5E, 0x5B, 0x58, 0x59, 0x5A, 0x5F,
0x5C, 0x55, 0x56, 0x53, 0x50, 0x51, 0x52, 0x57,
0x64, 0x6D, 0x6E, 0x6B, 0x68, 0x69, 0x6A, 0x6F,
0x6C, 0x65, 0x66, 0x63, 0x60, 0x61, 0x62, 0x67,
0x74, 0x7D, 0x7E, 0x7B, 0x78, 0x79, 0x7A, 0x7F,
0x7C, 0x75, 0x76, 0x73, 0x70, 0x71, 0x72, 0x77
static u8 pi_css_mangle2[256] =
0xC4, 0x24, 0x14, 0x34, 0xCE, 0x2E, 0x1E, 0x3E,
0xCD, 0x2D, 0x1D, 0x3D, 0xCB, 0x2B, 0x1B, 0x3B,
0x44, 0xA4, 0x94, 0xB4, 0x4E, 0xAE, 0x9E, 0xBE,
0x4D, 0xAD, 0x9D, 0xBD, 0x4B, 0xAB, 0x9B, 0xBB,
0x04, 0xE4, 0xD4, 0xF4, 0x0E, 0xEE, 0xDE, 0xFE,
0x0D, 0xED, 0xDD, 0xFD, 0x0B, 0xEB, 0xDB, 0xFB,
0x84, 0x64, 0x54, 0x74, 0x8E, 0x6E, 0x5E, 0x7E,
0x8D, 0x6D, 0x5D, 0x7D, 0x8B, 0x6B, 0x5B, 0x7B,
0xCC, 0x2C, 0x1C, 0x3C, 0xC6, 0x26, 0x16, 0x36,
0xC5, 0x25, 0x15, 0x35, 0xC3, 0x23, 0x13, 0x33,
0x4C, 0xAC, 0x9C, 0xBC, 0x46, 0xA6, 0x96, 0xB6,
0x45, 0xA5, 0x95, 0xB5, 0x43, 0xA3, 0x93, 0xB3,
0x0C, 0xEC, 0xDC, 0xFC, 0x06, 0xE6, 0xD6, 0xF6,
0x05, 0xE5, 0xD5, 0xF5, 0x03, 0xE3, 0xD3, 0xF3,
0x8C, 0x6C, 0x5C, 0x7C, 0x86, 0x66, 0x56, 0x76,
0x85, 0x65, 0x55, 0x75, 0x83, 0x63, 0x53, 0x73,
0xC8, 0x28, 0x18, 0x38, 0xCA, 0x2A, 0x1A, 0x3A,
0xC9, 0x29, 0x19, 0x39, 0xCF, 0x2F, 0x1F, 0x3F,
0x48, 0xA8, 0x98, 0xB8, 0x4A, 0xAA, 0x9A, 0xBA,
0x49, 0xA9, 0x99, 0xB9, 0x4F, 0xAF, 0x9F, 0xBF,
0x08, 0xE8, 0xD8, 0xF8, 0x0A, 0xEA, 0xDA, 0xFA,
0x09, 0xE9, 0xD9, 0xF9, 0x0F, 0xEF, 0xDF, 0xFF,
0x88, 0x68, 0x58, 0x78, 0x8A, 0x6A, 0x5A, 0x7A,
0x89, 0x69, 0x59, 0x79, 0x8F, 0x6F, 0x5F, 0x7F,
0xC0, 0x20, 0x10, 0x30, 0xC2, 0x22, 0x12, 0x32,
0xC1, 0x21, 0x11, 0x31, 0xC7, 0x27, 0x17, 0x37,
0x40, 0xA0, 0x90, 0xB0, 0x42, 0xA2, 0x92, 0xB2,
0x41, 0xA1, 0x91, 0xB1, 0x47, 0xA7, 0x97, 0xB7,
0x00, 0xE0, 0xD0, 0xF0, 0x02, 0xE2, 0xD2, 0xF2,
0x01, 0xE1, 0xD1, 0xF1, 0x07, 0xE7, 0xD7, 0xF7,
0x80, 0x60, 0x50, 0x70, 0x82, 0x62, 0x52, 0x72,
0x81, 0x61, 0x51, 0x71, 0x87, 0x67, 0x57, 0x77
static u8 pi_reverse[256] =
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
static u8 pi_crypt_tab0[256] = {
0xB7, 0xF4, 0x82, 0x57, 0xDA, 0x4D, 0xDB, 0xE2,
0x2F, 0x52, 0x1A, 0xA8, 0x68, 0x5A, 0x8A, 0xFF,
0xFB, 0x0E, 0x6D, 0x35, 0xF7, 0x5C, 0x76, 0x12,
0xCE, 0x25, 0x79, 0x29, 0x39, 0x62, 0x08, 0x24,
0xA5, 0x85, 0x7B, 0x56, 0x01, 0x23, 0x68, 0xCF,
0x0A, 0xE2, 0x5A, 0xED, 0x3D, 0x59, 0xB0, 0xA9,
0xB0, 0x2C, 0xF2, 0xB8, 0xEF, 0x32, 0xA9, 0x40,
0x80, 0x71, 0xAF, 0x1E, 0xDE, 0x8F, 0x58, 0x88,
0xB8, 0x3A, 0xD0, 0xFC, 0xC4, 0x1E, 0xB5, 0xA0,
0xBB, 0x3B, 0x0F, 0x01, 0x7E, 0x1F, 0x9F, 0xD9,
0xAA, 0xB8, 0x3D, 0x9D, 0x74, 0x1E, 0x25, 0xDB,
0x37, 0x56, 0x8F, 0x16, 0xBA, 0x49, 0x2B, 0xAC,
0xD0, 0xBD, 0x95, 0x20, 0xBE, 0x7A, 0x28, 0xD0,
0x51, 0x64, 0x63, 0x1C, 0x7F, 0x66, 0x10, 0xBB,
0xC4, 0x56, 0x1A, 0x04, 0x6E, 0x0A, 0xEC, 0x9C,
0xD6, 0xE8, 0x9A, 0x7A, 0xCF, 0x8C, 0xDB, 0xB1,
0xEF, 0x71, 0xDE, 0x31, 0xFF, 0x54, 0x3E, 0x5E,
0x07, 0x69, 0x96, 0xB0, 0xCF, 0xDD, 0x9E, 0x47,
0xC7, 0x96, 0x8F, 0xE4, 0x2B, 0x59, 0xC6, 0xEE,
0xB9, 0x86, 0x9A, 0x64, 0x84, 0x72, 0xE2, 0x5B,
0xA2, 0x96, 0x58, 0x99, 0x50, 0x03, 0xF5, 0x38,
0x4D, 0x02, 0x7D, 0xE7, 0x7D, 0x75, 0xA7, 0xB8,
0x67, 0x87, 0x84, 0x3F, 0x1D, 0x11, 0xE5, 0xFC,
0x1E, 0xD3, 0x83, 0x16, 0xA5, 0x29, 0xF6, 0xC7,
0x15, 0x61, 0x29, 0x1A, 0x43, 0x4F, 0x9B, 0xAF,
0xC5, 0x87, 0x34, 0x6C, 0x0F, 0x3B, 0xA8, 0x1D,
0x45, 0x58, 0x25, 0xDC, 0xA8, 0xA3, 0x3B, 0xD1,
0x79, 0x1B, 0x48, 0xF2, 0xE9, 0x93, 0x1F, 0xFC,
0xDB, 0x2A, 0x90, 0xA9, 0x8A, 0x3D, 0x39, 0x18,
0xA3, 0x8E, 0x58, 0x6C, 0xE0, 0x12, 0xBB, 0x25,
0xCD, 0x71, 0x22, 0xA2, 0x64, 0xC6, 0xE7, 0xFB,
0xAD, 0x94, 0x77, 0x04, 0x9A, 0x39, 0xCF, 0x7C};
static u8 pi_crypt_tab1[256] = {
0x8C, 0x47, 0xB0, 0xE1, 0xEB, 0xFC, 0xEB, 0x56,
0x10, 0xE5, 0x2C, 0x1A, 0x5D, 0xEF, 0xBE, 0x4F,
0x08, 0x75, 0x97, 0x4B, 0x0E, 0x25, 0x8E, 0x6E,
0x39, 0x5A, 0x87, 0x53, 0xC4, 0x1F, 0xF4, 0x5C,
0x4E, 0xE6, 0x99, 0x30, 0xE0, 0x42, 0x88, 0xAB,
0xE5, 0x85, 0xBC, 0x8F, 0xD8, 0x3C, 0x54, 0xC9,
0x53, 0x47, 0x18, 0xD6, 0x06, 0x5B, 0x41, 0x2C,
0x67, 0x1E, 0x41, 0x74, 0x33, 0xE2, 0xB4, 0xE0,
0x23, 0x29, 0x42, 0xEA, 0x55, 0x0F, 0x25, 0xB4,
0x24, 0x2C, 0x99, 0x13, 0xEB, 0x0A, 0x0B, 0xC9,
0xF9, 0x63, 0x67, 0x43, 0x2D, 0xC7, 0x7D, 0x07,
0x60, 0x89, 0xD1, 0xCC, 0xE7, 0x94, 0x77, 0x74,
0x9B, 0x7E, 0xD7, 0xE6, 0xFF, 0xBB, 0x68, 0x14,
0x1E, 0xA3, 0x25, 0xDE, 0x3A, 0xA3, 0x54, 0x7B,
0x87, 0x9D, 0x50, 0xCA, 0x27, 0xC3, 0xA4, 0x50,
0x91, 0x27, 0xD4, 0xB0, 0x82, 0x41, 0x97, 0x79,
0x94, 0x82, 0xAC, 0xC7, 0x8E, 0xA5, 0x4E, 0xAA,
0x78, 0x9E, 0xE0, 0x42, 0xBA, 0x28, 0xEA, 0xB7,
0x74, 0xAD, 0x35, 0xDA, 0x92, 0x60, 0x7E, 0xD2,
0x0E, 0xB9, 0x24, 0x5E, 0x39, 0x4F, 0x5E, 0x63,
0x09, 0xB5, 0xFA, 0xBF, 0xF1, 0x22, 0x55, 0x1C,
0xE2, 0x25, 0xDB, 0xC5, 0xD8, 0x50, 0x03, 0x98,
0xC4, 0xAC, 0x2E, 0x11, 0xB4, 0x38, 0x4D, 0xD0,
0xB9, 0xFC, 0x2D, 0x3C, 0x08, 0x04, 0x5A, 0xEF,
0xCE, 0x32, 0xFB, 0x4C, 0x92, 0x1E, 0x4B, 0xFB,
0x1A, 0xD0, 0xE2, 0x3E, 0xDA, 0x6E, 0x7C, 0x4D,
0x56, 0xC3, 0x3F, 0x42, 0xB1, 0x3A, 0x23, 0x4D,
0x6E, 0x84, 0x56, 0x68, 0xF4, 0x0E, 0x03, 0x64,
0xD0, 0xA9, 0x92, 0x2F, 0x8B, 0xBC, 0x39, 0x9C,
0xAC, 0x09, 0x5E, 0xEE, 0xE5, 0x97, 0xBF, 0xA5,
0xCE, 0xFA, 0x28, 0x2C, 0x6D, 0x4F, 0xEF, 0x77,
0xAA, 0x1B, 0x79, 0x8E, 0x97, 0xB4, 0xC3, 0xF4};
static u8 pi_crypt_tab2[256] = {
0xB7, 0x75, 0x81, 0xD5, 0xDC, 0xCA, 0xDE, 0x66,
0x23, 0xDF, 0x15, 0x26, 0x62, 0xD1, 0x83, 0x77,
0xE3, 0x97, 0x76, 0xAF, 0xE9, 0xC3, 0x6B, 0x8E,
0xDA, 0xB0, 0x6E, 0xBF, 0x2B, 0xF1, 0x19, 0xB4,
0x95, 0x34, 0x48, 0xE4, 0x37, 0x94, 0x5D, 0x7B,
0x36, 0x5F, 0x65, 0x53, 0x07, 0xE2, 0x89, 0x11,
0x98, 0x85, 0xD9, 0x12, 0xC1, 0x9D, 0x84, 0xEC,
0xA4, 0xD4, 0x88, 0xB8, 0xFC, 0x2C, 0x79, 0x28,
0xD8, 0xDB, 0xB3, 0x1E, 0xA2, 0xF9, 0xD0, 0x44,
0xD7, 0xD6, 0x60, 0xEF, 0x14, 0xF4, 0xF6, 0x31,
0xD2, 0x41, 0x46, 0x67, 0x0A, 0xE1, 0x58, 0x27,
0x43, 0xA3, 0xF8, 0xE0, 0xC8, 0xBA, 0x5A, 0x5C,
0x80, 0x6C, 0xC6, 0xF2, 0xE8, 0xAD, 0x7D, 0x04,
0x0D, 0xB9, 0x3C, 0xC2, 0x25, 0xBD, 0x49, 0x63,
0x8C, 0x9F, 0x51, 0xCE, 0x20, 0xC5, 0xA1, 0x50,
0x92, 0x2D, 0xDD, 0xBC, 0x8D, 0x4F, 0x9A, 0x71,
0x2F, 0x30, 0x1D, 0x73, 0x39, 0x13, 0xFB, 0x1A,
0xCB, 0x24, 0x59, 0xFE, 0x05, 0x96, 0x57, 0x0F,
0x1F, 0xCF, 0x54, 0xBE, 0xF5, 0x06, 0x1B, 0xB2,
0x6D, 0xD3, 0x4D, 0x32, 0x56, 0x21, 0x33, 0x0B,
0x52, 0xE7, 0xAB, 0xEB, 0xA6, 0x74, 0x00, 0x4C,
0xB1, 0x7F, 0x82, 0x99, 0x87, 0x0E, 0x5E, 0xC0,
0x8F, 0xEE, 0x6F, 0x55, 0xF3, 0x7E, 0x08, 0x90,
0xFA, 0xB6, 0x64, 0x70, 0x47, 0x4A, 0x17, 0xA7,
0xB5, 0x40, 0x8A, 0x38, 0xE5, 0x68, 0x3E, 0x8B,
0x69, 0xAA, 0x9B, 0x42, 0xA5, 0x10, 0x01, 0x35,
0xFD, 0x61, 0x9E, 0xE6, 0x16, 0x9C, 0x86, 0xED,
0xCD, 0x2E, 0xFF, 0xC4, 0x5B, 0xA0, 0xAE, 0xCC,
0x4B, 0x3B, 0x03, 0xBB, 0x1C, 0x2A, 0xAC, 0x0C,
0x3F, 0x93, 0xC7, 0x72, 0x7A, 0x09, 0x22, 0x3D,
0x45, 0x78, 0xA9, 0xA8, 0xEA, 0xC9, 0x6A, 0xF7,
0x29, 0x91, 0xF0, 0x02, 0x18, 0x3A, 0x4E, 0x7C};
static u8 pi_crypt_tab3[288] = {
0x73, 0x51, 0x95, 0xE1, 0x12, 0xE4, 0xC0, 0x58,
0xEE, 0xF2, 0x08, 0x1B, 0xA9, 0xFA, 0x98, 0x4C,
0xA7, 0x33, 0xE2, 0x1B, 0xA7, 0x6D, 0xF5, 0x30,
0x97, 0x1D, 0xF3, 0x02, 0x60, 0x5A, 0x82, 0x0F,
0x91, 0xD0, 0x9C, 0x10, 0x39, 0x7A, 0x83, 0x85,
0x3B, 0xB2, 0xB8, 0xAE, 0x0C, 0x09, 0x52, 0xEA,
0x1C, 0xE1, 0x8D, 0x66, 0x4F, 0xF3, 0xDA, 0x92,
0x29, 0xB9, 0xD5, 0xC5, 0x77, 0x47, 0x22, 0x53,
0x14, 0xF7, 0xAF, 0x22, 0x64, 0xDF, 0xC6, 0x72,
0x12, 0xF3, 0x75, 0xDA, 0xD7, 0xD7, 0xE5, 0x02,
0x9E, 0xED, 0xDA, 0xDB, 0x4C, 0x47, 0xCE, 0x91,
0x06, 0x06, 0x6D, 0x55, 0x8B, 0x19, 0xC9, 0xEF,
0x8C, 0x80, 0x1A, 0x0E, 0xEE, 0x4B, 0xAB, 0xF2,
0x08, 0x5C, 0xE9, 0x37, 0x26, 0x5E, 0x9A, 0x90,
0x00, 0xF3, 0x0D, 0xB2, 0xA6, 0xA3, 0xF7, 0x26,
0x17, 0x48, 0x88, 0xC9, 0x0E, 0x2C, 0xC9, 0x02,
0xE7, 0x18, 0x05, 0x4B, 0xF3, 0x39, 0xE1, 0x20,
0x02, 0x0D, 0x40, 0xC7, 0xCA, 0xB9, 0x48, 0x30,
0x57, 0x67, 0xCC, 0x06, 0xBF, 0xAC, 0x81, 0x08,
0x24, 0x7A, 0xD4, 0x8B, 0x19, 0x8E, 0xAC, 0xB4,
0x5A, 0x0F, 0x73, 0x13, 0xAC, 0x9E, 0xDA, 0xB6,
0xB8, 0x96, 0x5B, 0x60, 0x88, 0xE1, 0x81, 0x3F,
0x07, 0x86, 0x37, 0x2D, 0x79, 0x14, 0x52, 0xEA,
0x73, 0xDF, 0x3D, 0x09, 0xC8, 0x25, 0x48, 0xD8,
0x75, 0x60, 0x9A, 0x08, 0x27, 0x4A, 0x2C, 0xB9,
0xA8, 0x8B, 0x8A, 0x73, 0x62, 0x37, 0x16, 0x02,
0xBD, 0xC1, 0x0E, 0x56, 0x54, 0x3E, 0x14, 0x5F,
0x8C, 0x8F, 0x6E, 0x75, 0x1C, 0x07, 0x39, 0x7B,
0x4B, 0xDB, 0xD3, 0x4B, 0x1E, 0xC8, 0x7E, 0xFE,
0x3E, 0x72, 0x16, 0x83, 0x7D, 0xEE, 0xF5, 0xCA,
0xC5, 0x18, 0xF9, 0xD8, 0x68, 0xAB, 0x38, 0x85,
0xA8, 0xF0, 0xA1, 0x73, 0x9F, 0x5D, 0x19, 0x0B,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x33, 0x72, 0x39, 0x25, 0x67, 0x26, 0x6D, 0x71,
0x36, 0x77, 0x3C, 0x20, 0x62, 0x23, 0x68, 0x74,
0xC3, 0x82, 0xC9, 0x15, 0x57, 0x16, 0x5D, 0x81};
* Local functions
......@@ -449,9 +451,6 @@ static int CSSGetASF( int i_fd )
static void CSSCryptKey( int i_key_type, int i_varient,
u8 const * pi_challenge, u8* pi_key )
/* "Secret" key */
u8 pi_css_secret[5] = { 0xE2, 0xA3, 0x45, 0x10, 0xF4 };
/* Permutation table for challenge */
u8 ppi_perm_challenge[3][10] =
{ { 1, 3, 0, 7, 5, 2, 9, 6, 4, 8 },
......@@ -469,131 +468,184 @@ static void CSSCryptKey( int i_key_type, int i_varient,
0x13, 0x1b, 0x17, 0x1f, 0x03, 0x0b, 0x07, 0x0f,
0x11, 0x19, 0x15, 0x1d, 0x01, 0x09, 0x05, 0x0d } };
/* CSS varient for mangling */
u8 pi_css_varients[32] =
{ 0x00, 0x01, 0x04, 0x05, 0x10, 0x11, 0x14, 0x15,
0x20, 0x21, 0x24, 0x25, 0x30, 0x31, 0x34, 0x35,
0x80, 0x81, 0x84, 0x85, 0x90, 0x91, 0x94, 0x95,
0xA0, 0xA1, 0xA4, 0xA5, 0xB0, 0xB1, 0xB4, 0xB5 };
u8 pi_varients[32] =
{ 0xB7, 0x74, 0x85, 0xD0, 0xCC, 0xDB, 0xCA, 0x73,
0x03, 0xFE, 0x31, 0x03, 0x52, 0xE0, 0xB7, 0x42,
0x63, 0x16, 0xF2, 0x2A, 0x79, 0x52, 0xFF, 0x1B,
0x7A, 0x11, 0xCA, 0x1A, 0x9B, 0x40, 0xAD, 0x01 };
/* The "secret" key */
u8 pi_secret[5] = { 0x55, 0xD6, 0xC4, 0xC5, 0x28 };
u8 pi_bits[30];
u8 pi_scratch[10];
u8 pi_tmp1[5];
u8 pi_tmp2[5];
u8 i_lfsr0_o;
u8 i_lfsr1_o;
u8 i_lfsr0_o; /* 1 bit used */
u8 i_lfsr1_o; /* 1 bit used */
u32 i_lfsr0;
u32 i_lfsr1;
u8 i_css_varient;
int i_val = 0;
u8 i_cse;
u8 i_index;
u8 i_combined;
u8 i_carry;
u8 i_val = 0;
int i_term = 0;
int i, i_index;
int i_bit;
int i;
for( i=0 ; i<10 ; i++ )
for (i = 9; i >= 0; --i)
pi_scratch[i] = pi_challenge[ppi_perm_challenge[i_key_type][i]];
i_css_varient = i_key_type == 0 ? i_varient
: ppi_perm_varient[i_key_type-1][i_varient];
for( i=0 ; i<5 ; i++ )
i_css_varient = ( i_key_type == 0 ) ? i_varient :
* This encryption engine implements one of 32 variations
* one the same theme depending upon the choice in the
* varient parameter (0 - 31).
* The algorithm itself manipulates a 40 bit input into
* a 40 bit output.
* The parameter 'input' is 80 bits. It consists of
* the 40 bit input value that is to be encrypted followed
* by a 40 bit seed value for the pseudo random number
* generators.
/* Feed the secret into the input values such that
* we alter the seed to the LFSR's used above, then
* generate the bits to play with.
for( i = 5 ; --i >= 0 ; )
pi_tmp1[i] = pi_scratch[5+i] ^ pi_css_secret[i];
pi_tmp1[i] = pi_scratch[5 + i] ^ pi_secret[i] ^ pi_crypt_tab2[i];
* We use two LFSR's (seeded from some of the input data bytes) to
* generate two streams of pseudo-random bits. These two bit streams
* are then combined by simply adding with carry to generate a final
* sequence of pseudo-random bits which is stored in the buffer that
* 'output' points to the end of - len is the size of this buffer.
* The first LFSR is of degree 25, and has a polynomial of:
* x^13 + x^5 + x^4 + x^1 + 1
* The second LSFR is of degree 17, and has a (primitive) polynomial of:
* x^15 + x^1 + 1
* I don't know if these polynomials are primitive modulo 2, and thus
* represent maximal-period LFSR's.
* Note that we take the output of each LFSR from the new shifted in
* bit, not the old shifted out bit. Thus for ease of use the LFSR's
* are implemented in bit reversed order.
/* In order to ensure that the LFSR works we need to ensure that the
* initial values are non-zero. Thus when we initialise them from
* the seed, we ensure that a bit is set.
i_lfsr0 = ( pi_tmp1[0] << 17 ) | ( pi_tmp1[1] << 9 ) |
( ( pi_tmp1[2] & ~7 ) << 1 ) | 8 | (pi_tmp1[2] & 7);
* reverse lfsr0/1 to simplify calculation in loop
i_lfsr0 = ( pi_reverse[i_lfsr0 & 0xff] << 17 ) |
( pi_reverse[( i_lfsr0 >> 8 ) & 0xff] << 9 ) |
( pi_reverse[( i_lfsr0 >> 16 ) & 0xff] << 1) |
( i_lfsr0 >> 24 );
i_lfsr1 = ( pi_reverse[pi_tmp1[4]] << 9 ) | 0x100 |
( pi_reverse[pi_tmp1[3]] );
(( pi_tmp1[2] & ~7 ) << 1 ) | 8 | ( pi_tmp1[2] & 7 );
i_lfsr1 = ( pi_tmp1[3] << 9 ) | 0x100 | pi_tmp1[4];
i_index = sizeof( pi_bits );
i_index = sizeof(pi_bits);
i_carry = 0;
i_lfsr0_o = ( i_lfsr0 >> 12) ^ ( i_lfsr0 >> 4) ^
( i_lfsr0 >> 3) ^ i_lfsr0;
i_lfsr1_o = ( ( i_lfsr1 >> 14 ) & 7) ^ i_lfsr1;
i_lfsr1_o ^= ( i_lfsr1_o << 3 ) ^ ( i_lfsr1_o << 6 );
i_lfsr1 = ( i_lfsr1 >> 8) ^ ( i_lfsr1_o << 9);
i_lfsr0 = ( i_lfsr0 >> 8 ) ^ ( i_lfsr0_o << 17);
for( i_bit = 0, i_val = 0 ; i_bit < 8 ; ++i_bit )
i_lfsr0_o = ~i_lfsr0_o;
i_lfsr1_o = ~i_lfsr1_o;
i_lfsr0_o = ( ( i_lfsr0 >> 24 ) ^ ( i_lfsr0 >> 21 ) ^
( i_lfsr0 >> 20 ) ^ ( i_lfsr0 >> 12 ) ) & 1;
i_lfsr0 = ( i_lfsr0 << 1 ) | i_lfsr0_o;
i_val += i_lfsr0_o + i_lfsr1_o;
i_lfsr1_o = ( ( i_lfsr1 >> 16 ) ^ ( i_lfsr1 >> 2 ) ) & 1;
i_lfsr1 = ( i_lfsr1 << 1 ) | i_lfsr1_o;
pi_bits[--i_index] = i_val & 0xFF;
i_val >>= 8;
#define BIT0(x) ((x) & 1)
#define BIT1(x) (((x) >> 1) & 1)
i_combined = !i_lfsr1_o + i_carry + !i_lfsr0_o;
/* taking bit 1 */
i_carry = ( i_combined >> 1 ) & 1;
i_val |= ( i_combined & 1 ) << i_bit;
pi_bits[--i_index] = i_val;
} while( i_index > 0 );
i_css_varient = pi_css_varients[i_css_varient];
/* This term is used throughout the following to
* select one of 32 different variations on the
* algorithm.
i_cse = pi_varients[i_css_varient] ^ pi_crypt_tab2[i_css_varient];
* Mangling
/* Now the actual blocks doing the encryption. Each
* of these works on 40 bits at a time and are quite
* similar.
i_index = 0;
for( i = 5, i_term = 0 ; --i >= 0 ; i_term = pi_scratch[i] )
i_index = pi_bits[25+i] ^ pi_scratch[i];
i_index = pi_css_mangle1[i_index] ^ i_css_varient;
pi_tmp1[i] = pi_css_mangle2[i_index] ^ i_term;
i_index = pi_bits[25 + i] ^ pi_scratch[i];
i_index = pi_crypt_tab1[i_index] ^ ~pi_crypt_tab2[i_index] ^ i_cse;
pi_tmp1[i] = pi_crypt_tab2[i_index] ^ pi_crypt_tab3[i_index] ^ i_term;
pi_tmp1[4] ^= pi_tmp1[0];
for( i = 5, i_term = 0 ; --i >= 0 ; i_term = pi_tmp1[i] )
i_index = pi_bits[20+i] ^ pi_tmp1[i];
i_index = pi_css_mangle1[i_index] ^ i_css_varient;
pi_tmp2[i] = pi_css_mangle2[i_index] ^ i_term;
i_index = pi_bits[20 + i] ^ pi_tmp1[i];
i_index = pi_crypt_tab1[i_index] ^ ~pi_crypt_tab2[i_index] ^ i_cse;
pi_tmp2[i] = pi_crypt_tab2[i_index] ^ pi_crypt_tab3[i_index] ^ i_term;
pi_tmp2[4] ^= pi_tmp2[0];
for( i = 5, i_term = 0 ; --i >= 0 ; i_term = pi_tmp2[i] )
i_index = pi_bits[15+i] ^ pi_tmp2[i];
i_index = pi_css_mangle1[i_index] ^ i_css_varient;
i_index = pi_css_mangle2[i_index] ^ i_term;
pi_tmp1[i] = pi_css_mangle0[i_index];
i_index = pi_bits[15 + i] ^ pi_tmp2[i];
i_index = pi_crypt_tab1[i_index] ^ ~pi_crypt_tab2[i_index] ^ i_cse;
i_index = pi_crypt_tab2[i_index] ^ pi_crypt_tab3[i_index] ^ i_term;
pi_tmp1[i] = pi_crypt_tab0[i_index] ^ pi_crypt_tab2[i_index];
pi_tmp1[4] ^= pi_tmp1[0];
for( i = 5, i_term = 0 ; --i >= 0 ; i_term = pi_tmp1[i] )
i_index = pi_bits[10+i] ^ pi_tmp1[i];
i_index = pi_css_mangle1[i_index] ^ i_css_varient;
i_index = pi_css_mangle2[i_index] ^ i_term;
pi_tmp2[i] = pi_css_mangle0[i_index];
i_index = pi_bits[10 + i] ^ pi_tmp1[i];
i_index = pi_crypt_tab1[i_index] ^ ~pi_crypt_tab2[i_index] ^ i_cse;
i_index = pi_crypt_tab2[i_index] ^ pi_crypt_tab3[i_index] ^ i_term;
pi_tmp2[i] = pi_crypt_tab0[i_index] ^ pi_crypt_tab2[i_index];
pi_tmp2[4] ^= pi_tmp2[0];
for( i = 5, i_term = 0 ; --i >= 0 ; i_term = pi_tmp2[i] )
i_index = pi_bits[5+i] ^ pi_tmp2[i];
i_index = pi_css_mangle1[i_index] ^ i_css_varient;
pi_tmp1[i] = pi_css_mangle2[i_index] ^ i_term;