diff options
Diffstat (limited to '')
| -rw-r--r-- | trunk/src/mp4ff/drms.c | 1043 |
1 files changed, 1043 insertions, 0 deletions
diff --git a/trunk/src/mp4ff/drms.c b/trunk/src/mp4ff/drms.c new file mode 100644 index 000000000..368b88110 --- /dev/null +++ b/trunk/src/mp4ff/drms.c @@ -0,0 +1,1043 @@ +/***************************************************************************** + * drms.c : DRMS + ***************************************************************************** + * Copyright (C) 2004 VideoLAN + * $Id: drms.c,v 1.3 2004/01/11 15:52:18 menno Exp $ + * + * Author: Jon Lech Johansen <jon-vl@nanocrew.net> + * + * 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 + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + *****************************************************************************/ + +#include <stdlib.h> /* malloc(), free() */ + +#include "mp4ffint.h" + +#ifdef ITUNES_DRM + +#ifdef _WIN32 +#include <tchar.h> +#include <shlobj.h> +#include <windows.h> +#endif + +#include "drms.h" +#include "drmstables.h" + +static __inline uint32_t U32_AT( void * _p ) +{ + uint8_t * p = (uint8_t *)_p; + return ( ((uint32_t)p[0] << 24) | ((uint32_t)p[1] << 16) + | ((uint32_t)p[2] << 8) | p[3] ); +} + +#define TAOS_INIT( tmp, i ) \ + memset( tmp, 0, sizeof(tmp) ); \ + tmp[ i + 0 ] = 0x67452301; \ + tmp[ i + 1 ] = 0xEFCDAB89; \ + tmp[ i + 2 ] = 0x98BADCFE; \ + tmp[ i + 3 ] = 0x10325476; + +#define ROR( x, n ) (((x) << (32-(n))) | ((x) >> (n))) + +static void init_ctx( uint32_t *p_ctx, uint32_t *p_input ) +{ + uint32_t i; + uint32_t p_tmp[ 6 ]; + + p_ctx[ 0 ] = sizeof(*p_input); + + memset( &p_ctx[ 1 + 4 ], 0, sizeof(*p_input) * 4 ); + memcpy( &p_ctx[ 1 + 0 ], p_input, sizeof(*p_input) * 4 ); + + p_tmp[ 0 ] = p_ctx[ 1 + 3 ]; + + for( i = 0; i < sizeof(p_drms_tab1)/sizeof(p_drms_tab1[ 0 ]); i++ ) + { + p_tmp[ 0 ] = ROR( p_tmp[ 0 ], 8 ); + + p_tmp[ 5 ] = p_drms_tab2[ (p_tmp[ 0 ] >> 24) & 0xFF ] + ^ ROR( p_drms_tab2[ (p_tmp[ 0 ] >> 16) & 0xFF ], 8 ) + ^ ROR( p_drms_tab2[ (p_tmp[ 0 ] >> 8) & 0xFF ], 16 ) + ^ ROR( p_drms_tab2[ p_tmp[ 0 ] & 0xFF ], 24 ) + ^ p_drms_tab1[ i ] + ^ p_ctx[ 1 + ((i + 1) * 4) - 4 ]; + + p_ctx[ 1 + ((i + 1) * 4) + 0 ] = p_tmp[ 5 ]; + p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 3 ]; + p_ctx[ 1 + ((i + 1) * 4) + 1 ] = p_tmp[ 5 ]; + p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 2 ]; + p_ctx[ 1 + ((i + 1) * 4) + 2 ] = p_tmp[ 5 ]; + p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 1 ]; + p_ctx[ 1 + ((i + 1) * 4) + 3 ] = p_tmp[ 5 ]; + + p_tmp[ 0 ] = p_tmp[ 5 ]; + } + + memcpy( &p_ctx[ 1 + 64 ], &p_ctx[ 1 ], sizeof(*p_ctx) * 4 ); + + for( i = 4; i < sizeof(p_drms_tab1); i++ ) + { + p_tmp[ 2 ] = p_ctx[ 1 + 4 + (i - 4) ]; + + p_tmp[ 0 ] = (((p_tmp[ 2 ] >> 7) & 0x01010101) * 27) + ^ ((p_tmp[ 2 ] & 0xFF7F7F7F) << 1); + p_tmp[ 1 ] = (((p_tmp[ 0 ] >> 7) & 0x01010101) * 27) + ^ ((p_tmp[ 0 ] & 0xFF7F7F7F) << 1); + p_tmp[ 4 ] = (((p_tmp[ 1 ] >> 7) & 0x01010101) * 27) + ^ ((p_tmp[ 1 ] & 0xFF7F7F7F) << 1); + + p_tmp[ 2 ] ^= p_tmp[ 4 ]; + + p_tmp[ 3 ] = ROR( p_tmp[ 1 ] ^ p_tmp[ 2 ], 16 ) + ^ ROR( p_tmp[ 0 ] ^ p_tmp[ 2 ], 8 ) + ^ ROR( p_tmp[ 2 ], 24 ); + + p_ctx[ 1 + 4 + 64 + (i - 4) ] = p_tmp[ 3 ] ^ p_tmp[ 4 ] + ^ p_tmp[ 1 ] ^ p_tmp[ 0 ]; + } +} + +static void ctx_xor( uint32_t *p_ctx, uint32_t *p_in, uint32_t *p_out, + uint32_t p_table1[ 256 ], uint32_t p_table2[ 256 ] ) +{ + uint32_t i, x, y; + uint32_t p_tmp1[ 4 ]; + uint32_t p_tmp2[ 4 ]; + + i = p_ctx[ 0 ] * 4; + + p_tmp1[ 0 ] = p_ctx[ 1 + i + 24 ] ^ p_in[ 0 ]; + p_tmp1[ 1 ] = p_ctx[ 1 + i + 25 ] ^ p_in[ 1 ]; + p_tmp1[ 2 ] = p_ctx[ 1 + i + 26 ] ^ p_in[ 2 ]; + p_tmp1[ 3 ] = p_ctx[ 1 + i + 27 ] ^ p_in[ 3 ]; + + i += 84; + +#define XOR_ROR( p_table, p_tmp, i_ctx ) \ + p_table[ (p_tmp[ y > 2 ? y - 3 : y + 1 ] >> 24) & 0xFF ] \ + ^ ROR( p_table[ (p_tmp[ y > 1 ? y - 2 : y + 2 ] >> 16) & 0xFF ], 8 ) \ + ^ ROR( p_table[ (p_tmp[ y > 0 ? y - 1 : y + 3 ] >> 8) & 0xFF ], 16 ) \ + ^ ROR( p_table[ p_tmp[ y ] & 0xFF ], 24 ) \ + ^ p_ctx[ i_ctx ] + + for( x = 0; x < 1; x++ ) + { + memcpy( p_tmp2, p_tmp1, sizeof(p_tmp1) ); + + for( y = 0; y < 4; y++ ) + { + p_tmp1[ y ] = XOR_ROR( p_table1, p_tmp2, 1 + i - x + y ); + } + } + + for( ; x < 9; x++ ) + { + memcpy( p_tmp2, p_tmp1, sizeof(p_tmp1) ); + + for( y = 0; y < 4; y++ ) + { + p_tmp1[ y ] = XOR_ROR( p_table1, p_tmp2, + 1 + i - x - ((x * 3) - y) ); + } + } + + for( y = 0; y < 4; y++ ) + { + p_out[ y ] = XOR_ROR( p_table2, p_tmp1, + 1 + i - x - ((x * 3) - y) ); + } + +#undef XOR_ROR +} + +static void taos( uint32_t *p_buffer, uint32_t *p_input ) +{ + uint32_t i; + uint32_t x = 0; + uint32_t p_tmp1[ 4 ]; + uint32_t p_tmp2[ 4 ]; + + memcpy( p_tmp1, p_buffer, sizeof(p_tmp1) ); + + p_tmp2[ 0 ] = ((~p_tmp1[ 1 ] & p_tmp1[ 3 ]) + | (p_tmp1[ 2 ] & p_tmp1[ 1 ])) + p_input[ x ]; + p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp1[ 0 ] + p_drms_tab_taos[ x++ ]; + + for( i = 0; i < 4; i++ ) + { + p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x19) + | (p_tmp1[ 0 ] << 0x7)) + p_tmp1[ 1 ]; + p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] & p_tmp1[ 2 ]) + | (p_tmp1[ 1 ] & p_tmp2[ 0 ])) + p_input[ x ]; + p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x14) + | (p_tmp2[ 1 ] << 0xC)) + p_tmp2[ 0 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 1 ]) + | (p_tmp1[ 3 ] & p_tmp2[ 0 ])) + p_input[ x ]; + p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0xF) + | (p_tmp2[ 1 ] << 0x11)) + p_tmp1[ 3 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] & p_tmp2[ 0 ]) + | (p_tmp1[ 3 ] & p_tmp1[ 2 ])) + p_input[ x ]; + p_tmp2[ 2 ] = p_tmp2[ 1 ] + p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 1 ] = ((p_tmp2[ 2 ] << 0x16) + | (p_tmp2[ 2 ] >> 0xA)) + p_tmp1[ 2 ]; + if( i == 3 ) + { + p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 2 ]) + | (p_tmp1[ 3 ] & p_tmp1[ 1 ])) + p_input[ 1 ]; + } + else + { + p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] & p_tmp1[ 3 ]) + | (p_tmp1[ 2 ] & p_tmp1[ 1 ])) + p_input[ x ]; + } + p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ]; + } + + for( i = 0; i < 4; i++ ) + { + uint8_t p_table[ 4 ][ 4 ] = + { + { 6, 11, 0, 5 }, + { 10, 15, 4, 9 }, + { 14, 3, 8, 13 }, + { 2, 7, 12, 5 } + }; + + p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1B) + | (p_tmp1[ 0 ] << 0x5)) + p_tmp1[ 1 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] & p_tmp1[ 1 ]) + | (p_tmp1[ 2 ] & p_tmp2[ 0 ])) + + p_input[ p_table[ i ][ 0 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x17) + | (p_tmp2[ 1 ] << 0x9)) + p_tmp2[ 0 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] & p_tmp2[ 0 ]) + | (p_tmp1[ 3 ] & p_tmp1[ 1 ])) + + p_input[ p_table[ i ][ 1 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x12) + | (p_tmp2[ 1 ] << 0xE)) + p_tmp1[ 3 ]; + p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] & p_tmp1[ 3 ]) + | (p_tmp1[ 2 ] & p_tmp2[ 0 ])) + + p_input[ p_table[ i ][ 2 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x14) + | (p_tmp2[ 1 ] >> 0xC)) + p_tmp1[ 2 ]; + if( i == 3 ) + { + p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp1[ 1 ]) + + p_input[ p_table[ i ][ 3 ] ]; + } + else + { + p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 2 ]) + | (p_tmp1[ 3 ] & p_tmp1[ 1 ])) + + p_input[ p_table[ i ][ 3 ] ]; + } + p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ]; + } + + for( i = 0; i < 4; i++ ) + { + uint8_t p_table[ 4 ][ 4 ] = + { + { 8, 11, 14, 1 }, + { 4, 7, 10, 13 }, + { 0, 3, 6, 9 }, + { 12, 15, 2, 0 } + }; + + p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1C) + | (p_tmp1[ 0 ] << 0x4)) + p_tmp1[ 1 ]; + p_tmp2[ 1 ] = (p_tmp1[ 2 ] ^ p_tmp1[ 1 ] ^ p_tmp2[ 0 ]) + + p_input[ p_table[ i ][ 0 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x15) + | (p_tmp2[ 1 ] << 0xB)) + p_tmp2[ 0 ]; + p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 1 ] ^ p_tmp2[ 0 ]) + + p_input[ p_table[ i ][ 1 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x10) + | (p_tmp2[ 1 ] << 0x10)) + p_tmp1[ 3 ]; + p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp2[ 0 ]) + + p_input[ p_table[ i ][ 2 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x17) + | (p_tmp2[ 1 ] >> 0x9)) + p_tmp1[ 2 ]; + if( i == 3 ) + { + p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] | p_tmp1[ 1 ]) ^ p_tmp1[ 2 ]) + + p_input[ p_table[ i ][ 3 ] ]; + } + else + { + p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp1[ 1 ]) + + p_input[ p_table[ i ][ 3 ] ]; + } + p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ]; + } + + for( i = 0; i < 4; i++ ) + { + uint8_t p_table[ 4 ][ 4 ] = + { + { 7, 14, 5, 12 }, + { 3, 10, 1, 8 }, + { 15, 6, 13, 4 }, + { 11, 2, 9, 0 } + }; + + p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1A) + | (p_tmp1[ 0 ] << 0x6)) + p_tmp1[ 1 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] | p_tmp2[ 0 ]) ^ p_tmp1[ 1 ]) + + p_input[ p_table[ i ][ 0 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x16) + | (p_tmp2[ 1 ] << 0xA)) + p_tmp2[ 0 ]; + p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] | p_tmp1[ 3 ]) ^ p_tmp2[ 0 ]) + + p_input[ p_table[ i ][ 1 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x11) + | (p_tmp2[ 1 ] << 0xF)) + p_tmp1[ 3 ]; + p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] | p_tmp1[ 2 ]) ^ p_tmp1[ 3 ]) + + p_input[ p_table[ i ][ 2 ] ]; + p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ]; + + p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x15) + | (p_tmp2[ 1 ] >> 0xB)) + p_tmp1[ 2 ]; + + if( i < 3 ) + { + p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] | p_tmp1[ 1 ]) ^ p_tmp1[ 2 ]) + + p_input[ p_table[ i ][ 3 ] ]; + p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ]; + } + } + + p_buffer[ 0 ] += p_tmp2[ 0 ]; + p_buffer[ 1 ] += p_tmp1[ 1 ]; + p_buffer[ 2 ] += p_tmp1[ 2 ]; + p_buffer[ 3 ] += p_tmp1[ 3 ]; +} + +static void taos_add1( uint32_t *p_buffer, + uint8_t *p_in, uint32_t i_len ) +{ + uint32_t i; + uint32_t x, y; + uint32_t p_tmp[ 16 ]; + uint32_t i_offset = 0; + + x = p_buffer[ 6 ] & 63; + y = 64 - x; + + p_buffer[ 6 ] += i_len; + + if( i_len < y ) + { + memcpy( &((uint8_t *)p_buffer)[ 48 + x ], p_in, i_len ); + } + else + { + if( x ) + { + memcpy( &((uint8_t *)p_buffer)[ 48 + x ], p_in, y ); + taos( &p_buffer[ 8 ], &p_buffer[ 12 ] ); + i_offset = y; + i_len -= y; + } + + if( i_len >= 64 ) + { + for( i = 0; i < i_len / 64; i++ ) + { + memcpy( p_tmp, &p_in[ i_offset ], sizeof(p_tmp) ); + taos( &p_buffer[ 8 ], p_tmp ); + i_offset += 64; + i_len -= 64; + } + } + + if( i_len ) + { + memcpy( &p_buffer[ 12 ], &p_in[ i_offset ], i_len ); + } + } +} + +static void taos_end1( uint32_t *p_buffer, uint32_t *p_out ) +{ + uint32_t x, y; + + x = p_buffer[ 6 ] & 63; + y = 63 - x; + + ((uint8_t *)p_buffer)[ 48 + x++ ] = 128; + + if( y < 8 ) + { + memset( &((uint8_t *)p_buffer)[ 48 + x ], 0, y ); + taos( &p_buffer[ 8 ], &p_buffer[ 12 ] ); + y = 64; + x = 0; + } + + memset( &((uint8_t *)p_buffer)[ 48 + x ], 0, y ); + + p_buffer[ 26 ] = p_buffer[ 6 ] * 8; + p_buffer[ 27 ] = p_buffer[ 6 ] >> 29; + taos( &p_buffer[ 8 ], &p_buffer[ 12 ] ); + + memcpy( p_out, &p_buffer[ 8 ], sizeof(*p_out) * 4 ); +} + +static void taos_add2( uint32_t *p_buffer, uint8_t *p_in, uint32_t i_len ) +{ + uint32_t i, x; + uint32_t p_tmp[ 16 ]; + + x = (p_buffer[ 0 ] / 8) & 63; + i = p_buffer[ 0 ] + i_len * 8; + + if( i < p_buffer[ 0 ] ) + { + p_buffer[ 1 ] += 1; + } + + p_buffer[ 0 ] = i; + p_buffer[ 1 ] += i_len >> 29; + + for( i = 0; i < i_len; i++ ) + { + ((uint8_t *)p_buffer)[ 24 + x++ ] = p_in[ i ]; + + if( x != 64 ) + continue; + + memcpy( p_tmp, &p_buffer[ 6 ], sizeof(p_tmp) ); + taos( &p_buffer[ 2 ], p_tmp ); + } +} + +static void taos_add2e( uint32_t *p_buffer, uint32_t *p_in, uint32_t i_len ) +{ + uint32_t i, x, y; + uint32_t p_tmp[ 32 ]; + + if( i_len ) + { + for( x = i_len; x; x -= y ) + { + y = x > 32 ? 32 : x; + + for( i = 0; i < y; i++ ) + { + p_tmp[ i ] = U32_AT(&p_in[ i ]); + } + } + } + + taos_add2( p_buffer, (uint8_t *)p_tmp, i_len * sizeof(p_tmp[ 0 ]) ); +} + +static void taos_end2( uint32_t *p_buffer ) +{ + uint32_t x; + uint32_t p_tmp[ 16 ]; + + p_tmp[ 14 ] = p_buffer[ 0 ]; + p_tmp[ 15 ] = p_buffer[ 1 ]; + + x = (p_buffer[ 0 ] / 8) & 63; + + taos_add2( p_buffer, p_drms_tab_tend, 56 - x ); + memcpy( p_tmp, &p_buffer[ 6 ], 56 ); + taos( &p_buffer[ 2 ], p_tmp ); + memcpy( &p_buffer[ 22 ], &p_buffer[ 2 ], sizeof(*p_buffer) * 4 ); +} + +static void taos_add3( uint32_t *p_buffer, uint8_t *p_key, uint32_t i_len ) +{ + uint32_t x, y; + uint32_t i = 0; + + x = (p_buffer[ 4 ] / 8) & 63; + p_buffer[ 4 ] += i_len * 8; + + if( p_buffer[ 4 ] < i_len * 8 ) + p_buffer[ 5 ] += 1; + + p_buffer[ 5 ] += i_len >> 29; + + y = 64 - x; + + if( i_len >= y ) + { + memcpy( &((uint8_t *)p_buffer)[ 24 + x ], p_key, y ); + taos( p_buffer, &p_buffer[ 6 ] ); + + i = y; + y += 63; + + if( y < i_len ) + { + for( ; y < i_len; y += 64, i += 64 ) + { + taos( p_buffer, (uint32_t *)&p_key[y - 63] ); + } + } + else + { + x = 0; + } + } + + memcpy( &((uint8_t *)p_buffer)[ 24 + x ], &p_key[ i ], i_len - i ); +} + +static int taos_osi( uint32_t *p_buffer ) +{ + int i_ret = 0; + +#ifdef _WIN32 + HKEY i_key; + uint32_t i; + DWORD i_size; + DWORD i_serial; + LPBYTE p_reg_buf; + + static LPCTSTR p_reg_keys[ 3 ][ 2 ] = + { + { + _T("HARDWARE\\DESCRIPTION\\System"), + _T("SystemBiosVersion") + }, + + { + _T("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"), + _T("ProcessorNameString") + }, + + { + _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion"), + _T("ProductId") + } + }; + + taos_add1( p_buffer, "cache-control", 13 ); + taos_add1( p_buffer, "Ethernet", 8 ); + + GetVolumeInformation( _T("C:\\"), NULL, 0, &i_serial, + NULL, NULL, NULL, 0 ); + taos_add1( p_buffer, (uint8_t *)&i_serial, 4 ); + + for( i = 0; i < sizeof(p_reg_keys)/sizeof(p_reg_keys[ 0 ]); i++ ) + { + if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, p_reg_keys[ i ][ 0 ], + 0, KEY_READ, &i_key ) == ERROR_SUCCESS ) + { + if( RegQueryValueEx( i_key, p_reg_keys[ i ][ 1 ], + NULL, NULL, NULL, + &i_size ) == ERROR_SUCCESS ) + { + p_reg_buf = malloc( i_size ); + + if( p_reg_buf != NULL ) + { + if( RegQueryValueEx( i_key, p_reg_keys[ i ][ 1 ], + NULL, NULL, p_reg_buf, + &i_size ) == ERROR_SUCCESS ) + { + taos_add1( p_buffer, (uint8_t *)p_reg_buf, + i_size ); + } + + free( p_reg_buf ); + } + } + + RegCloseKey( i_key ); + } + } + +#else + i_ret = -1; +#endif + + return( i_ret ); +} + +static int get_sci_data( uint32_t p_sci[ 11 ][ 4 ] ) +{ + int i_ret = -1; + +#ifdef _WIN32 + HANDLE i_file; + DWORD i_size, i_read; + TCHAR p_path[ MAX_PATH ]; + TCHAR *p_filename = _T("\\Apple Computer\\iTunes\\SC Info\\SC Info.sidb"); + + typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD, + LPTSTR ); + + HINSTANCE shfolder_dll = NULL; + SHGETFOLDERPATH dSHGetFolderPath = NULL; + + if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL ) + { + dSHGetFolderPath = + (SHGETFOLDERPATH)GetProcAddress( shfolder_dll, +#ifdef _UNICODE + _T("SHGetFolderPathW") ); +#else + _T("SHGetFolderPathA") ); +#endif + } + + if( dSHGetFolderPath != NULL && + SUCCEEDED( dSHGetFolderPath( NULL, /*CSIDL_COMMON_APPDATA*/ 0x0023, + NULL, 0, p_path ) ) ) + { + _tcsncat( p_path, p_filename, min( _tcslen( p_filename ), + (MAX_PATH-1) - _tcslen( p_path ) ) ); + + i_file = CreateFile( p_path, GENERIC_READ, 0, NULL, + OPEN_EXISTING, 0, NULL ); + if( i_file != INVALID_HANDLE_VALUE ) + { + i_read = sizeof(p_sci[ 0 ]) * 11; + i_size = GetFileSize( i_file, NULL ); + if( i_size != INVALID_FILE_SIZE && i_size >= i_read ) + { + i_size = SetFilePointer( i_file, 4, NULL, FILE_BEGIN ); + if( i_size != /*INVALID_SET_FILE_POINTER*/ ((DWORD)-1)) + { + if( ReadFile( i_file, p_sci, i_read, &i_size, NULL ) && + i_size == i_read ) + { + i_ret = 0; + } + } + } + + CloseHandle( i_file ); + } + } +#endif + + return( i_ret ); +} + +static void acei_taxs( uint32_t *p_acei, uint32_t i_val ) +{ + uint32_t i, x; + + i = (i_val / 16) & 15; + x = (~(i_val & 15)) & 15; + + if( (i_val & 768) == 768 ) + { + x = (~i) & 15; + i = i_val & 15; + + p_acei[ 25 + i ] = p_acei[ 25 + ((16 - x) & 15) ] + + p_acei[ 25 + (15 - x) ]; + } + else if( (i_val & 512) == 512 ) + { + p_acei[ 25 + i ] ^= p_drms_tab_xor[ 15 - i ][ x ]; + } + else if( (i_val & 256) == 256 ) + { + p_acei[ 25 + i ] -= p_drms_tab_sub[ 15 - i ][ x ]; + } + else + { + p_acei[ 25 + i ] += p_drms_tab_add[ 15 - i ][ x ]; + } +} + +static void acei( uint32_t *p_acei, uint8_t *p_buffer, uint32_t i_len ) +{ + uint32_t i, x; + uint32_t p_tmp[ 26 ]; + + for( i = 5; i < 25; i++ ) + { + if( p_acei[ i ] ) + { + acei_taxs( p_acei, p_acei[ i ] ); + } + } + + TAOS_INIT( p_tmp, 2 ); + taos_add2e( p_tmp, &p_acei[ 25 ], sizeof(*p_acei) * 4 ); + taos_end2( p_tmp ); + + x = i_len < 16 ? i_len : 16; + + if( x > 0 ) + { + for( i = 0; i < x; i++ ) + { + p_buffer[ i ] ^= ((uint8_t *)&p_tmp)[ 88 + i ]; + } + } +} + +static uint32_t ttov_calc( uint32_t *p_acei ) +{ + int32_t i_val; + uint32_t p_tmp[ 26 ]; + + TAOS_INIT( p_tmp, 2 ); + taos_add2e( p_tmp, &p_acei[ 0 ], 4 ); + taos_add2e( p_tmp, &p_acei[ 4 ], 1 ); + taos_end2( p_tmp ); + + p_acei[ 4 ]++; + + i_val = ((int32_t)U32_AT(&p_tmp[ 22 ])) % 1024; + + return( i_val < 0 ? i_val * -1 : i_val ); +} + +static void acei_init( uint32_t *p_acei, uint32_t *p_sys_key ) +{ + uint32_t i; + + for( i = 0; i < 4; i++ ) + { + p_acei[ i ] = U32_AT(&p_sys_key[ i ]); + } + + p_acei[ 4 ] = 0x5476212A; + + for( i = 5; i < 25; i++ ) + { + p_acei[ i ] = ttov_calc( p_acei ); + } + + p_acei[ 25 + 0 ] = p_acei[ 0 ]; + p_acei[ 25 + 1 ] = 0x68723876; + p_acei[ 25 + 2 ] = 0x41617376; + p_acei[ 25 + 3 ] = 0x4D4B4F76; + + p_acei[ 25 + 4 ] = p_acei[ 1 ]; + p_acei[ 25 + 5 ] = 0x48556646; + p_acei[ 25 + 6 ] = 0x38393725; + p_acei[ 25 + 7 ] = 0x2E3B5B3D; + + p_acei[ 25 + 8 ] = p_acei[ 2 ]; + p_acei[ 25 + 9 ] = 0x37363866; + p_acei[ 25 + 10 ] = 0x30383637; + p_acei[ 25 + 11 ] = 0x34333661; + + p_acei[ 25 + 12 ] = p_acei[ 3 ]; + p_acei[ 25 + 13 ] = 0x37386162; + p_acei[ 25 + 14 ] = 0x494F6E66; + p_acei[ 25 + 15 ] = 0x2A282966; +} + +static __inline void block_xor( uint32_t *p_in, uint32_t *p_key, + uint32_t *p_out ) +{ + uint32_t i; + + for( i = 0; i < 4; i++ ) + { + p_out[ i ] = p_key[ i ] ^ p_in[ i ]; + } +} + +int drms_get_sys_key( uint32_t *p_sys_key ) +{ + uint32_t p_tmp[ 128 ]; + uint32_t p_tmp_key[ 4 ]; + + TAOS_INIT( p_tmp, 8 ); + if( taos_osi( p_tmp ) ) + { + return( -1 ); + } + taos_end1( p_tmp, p_tmp_key ); + + TAOS_INIT( p_tmp, 2 ); + taos_add2( p_tmp, "YuaFlafu", 8 ); + taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 ); + taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 ); + taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 ); + taos_add2( p_tmp, "zPif98ga", 8 ); + taos_end2( p_tmp ); + + memcpy( p_sys_key, &p_tmp[ 2 ], sizeof(*p_sys_key) * 4 ); + + return( 0 ); +} + +int drms_get_user_key( uint32_t *p_sys_key, uint32_t *p_user_key ) +{ + uint32_t i; + uint32_t p_tmp[ 4 ]; + uint32_t *p_cur_key; + uint32_t p_acei[ 41 ]; + uint32_t p_ctx[ 128 ]; + uint32_t p_sci[ 2 ][ 11 ][ 4 ]; + + uint32_t p_sci_key[ 4 ] = + { + 0x6E66556D, 0x6E676F70, 0x67666461, 0x33373866 + }; + + if( p_sys_key == NULL ) + { + if( drms_get_sys_key( p_tmp ) ) + { + return( -1 ); + } + + p_sys_key = p_tmp; + } + + if( get_sci_data( p_sci[ 0 ] ) ) + { + return( -1 ); + } + + init_ctx( p_ctx, p_sys_key ); + + for( i = 0, p_cur_key = p_sci_key; + i < sizeof(p_sci[ 0 ])/sizeof(p_sci[ 0 ][ 0 ]); i++ ) + { + ctx_xor( p_ctx, &p_sci[ 0 ][ i ][ 0 ], &p_sci[ 1 ][ i ][ 0 ], + p_drms_tab3, p_drms_tab4 ); + block_xor( &p_sci[ 1 ][ i ][ 0 ], p_cur_key, &p_sci[ 1 ][ i ][ 0 ] ); + + p_cur_key = &p_sci[ 0 ][ i ][ 0 ]; + } + + acei_init( p_acei, p_sys_key ); + + for( i = 0; i < sizeof(p_sci[ 1 ])/sizeof(p_sci[ 1 ][ 0 ]); i++ ) + { + acei( p_acei, (uint8_t *)&p_sci[ 1 ][ i ][ 0 ], + sizeof(p_sci[ 1 ][ i ]) ); + } + + memcpy( p_user_key, &p_sci[ 1 ][ 10 ][ 0 ], sizeof(p_sci[ 1 ][ i ]) ); + + return( 0 ); +} + +struct drms_s +{ + uint8_t *p_iviv; + uint32_t i_iviv_len; + uint8_t *p_name; + uint32_t i_name_len; + + uint32_t *p_tmp; + uint32_t i_tmp_len; + + uint32_t p_key[ 4 ]; + uint32_t p_ctx[ 128 ]; +}; + +#define P_DRMS ((struct drms_s *)p_drms) + +void *drms_alloc() +{ + struct drms_s *p_drms; + + p_drms = malloc( sizeof(struct drms_s) ); + + if( p_drms != NULL ) + { + memset( p_drms, 0, sizeof(struct drms_s) ); + + p_drms->i_tmp_len = 1024; + p_drms->p_tmp = malloc( p_drms->i_tmp_len ); + if( p_drms->p_tmp == NULL ) + { + free( (void *)p_drms ); + p_drms = NULL; + } + } + + return( (void *)p_drms ); +} + +void drms_free( void *p_drms ) +{ + if( P_DRMS->p_name != NULL ) + { + free( (void *)P_DRMS->p_name ); + } + + if( P_DRMS->p_iviv != NULL ) + { + free( (void *)P_DRMS->p_iviv ); + } + + if( P_DRMS->p_tmp != NULL ) + { + free( (void *)P_DRMS->p_tmp ); + } + + free( p_drms ); +} + +void drms_decrypt( void *p_drms, uint32_t *p_buffer, uint32_t i_len ) +{ + uint32_t i, x, y; + uint32_t *p_cur_key = P_DRMS->p_key; + + x = (i_len / sizeof(P_DRMS->p_key)) * sizeof(P_DRMS->p_key); + + if( P_DRMS->i_tmp_len < x ) + { + free( (void *)P_DRMS->p_tmp ); + + P_DRMS->i_tmp_len = x; + P_DRMS->p_tmp = malloc( P_DRMS->i_tmp_len ); + } + + if( P_DRMS->p_tmp != NULL ) + { + memcpy( P_DRMS->p_tmp, p_buffer, x ); + + for( i = 0, x /= sizeof(P_DRMS->p_key); i < x; i++ ) + { + y = i * sizeof(*p_buffer); + + ctx_xor( P_DRMS->p_ctx, P_DRMS->p_tmp + y, p_buffer + y, + p_drms_tab3, p_drms_tab4 ); + block_xor( p_buffer + y, p_cur_key, p_buffer + y ); + + p_cur_key = P_DRMS->p_tmp + y; + } + } +} + +int drms_init( void *p_drms, uint32_t i_type, + uint8_t *p_info, uint32_t i_len ) +{ + int i_ret = 0; + + switch( i_type ) + { + case DRMS_INIT_UKEY: + { + if( i_len != sizeof(P_DRMS->p_key) ) + { + i_ret = -1; + break; + } + + init_ctx( P_DRMS->p_ctx, (uint32_t *)p_info ); + } + break; + + case DRMS_INIT_IVIV: + { + if( i_len != sizeof(P_DRMS->p_key) ) + { + i_ret = -1; + break; + } + + P_DRMS->p_iviv = malloc( i_len ); + if( P_DRMS->p_iviv == NULL ) + { + i_ret = -1; + break; + } + + memcpy( P_DRMS->p_iviv, p_info, i_len ); + P_DRMS->i_iviv_len = i_len; + } + break; + + case DRMS_INIT_NAME: + { + P_DRMS->p_name = malloc( i_len ); + if( P_DRMS->p_name == NULL ) + { + i_ret = -1; + break; + } + + memcpy( P_DRMS->p_name, p_info, i_len ); + P_DRMS->i_name_len = i_len; + } + break; + + case DRMS_INIT_PRIV: + { + uint32_t i; + uint32_t p_priv[ 64 ]; + uint32_t p_tmp[ 128 ]; + + if( i_len < 64 ) + { + i_ret = -1; + break; + } + + TAOS_INIT( p_tmp, 0 ); + taos_add3( p_tmp, P_DRMS->p_name, P_DRMS->i_name_len ); + taos_add3( p_tmp, P_DRMS->p_iviv, P_DRMS->i_iviv_len ); + memcpy( p_priv, &p_tmp[ 4 ], sizeof(p_priv[ 0 ]) * 2 ); + i = (p_tmp[ 4 ] / 8) & 63; + i = i >= 56 ? 120 - i : 56 - i; + taos_add3( p_tmp, p_drms_tab_tend, i ); + taos_add3( p_tmp, (uint8_t *)p_priv, sizeof(p_priv[ 0 ]) * 2 ); + + memcpy( p_priv, p_info, 64 ); + memcpy( P_DRMS->p_key, p_tmp, sizeof(P_DRMS->p_key) ); + drms_decrypt( p_drms, p_priv, sizeof(p_priv) ); + + init_ctx( P_DRMS->p_ctx, &p_priv[ 6 ] ); + memcpy( P_DRMS->p_key, &p_priv[ 12 ], sizeof(P_DRMS->p_key) ); + + free( (void *)P_DRMS->p_name ); + P_DRMS->p_name = NULL; + free( (void *)P_DRMS->p_iviv ); + P_DRMS->p_iviv = NULL; + } + break; + } + + return( i_ret ); +} + +#undef P_DRMS + +#endif + |