aaru-dps/Aaru.Decryption
1
0
Fork 0
mirror of https://github.com/aaru-dps/Aaru.Decryption.git synced 2025-12-16 19:24:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

Redo Reformat and cleanup.

Browse Source 
Rider EAP was having a bug interpreting .editorconfig that didn't generate the code style as we wanted.
This is now done with Rider-stable.
This commit is contained in:
Natalia Portillo
2023-10-04 17:34:34 +01:00
parent 9f529da3c6
commit 7786e94ee5
4 changed files with 138 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

157
DVD/CSS.cs
View File

@@ -58,17 +58,99 @@ public class CSS
{
static readonly byte[,] _playerKeys =
{
{ 0x01, 0xaf, 0xe3, 0x12, 0x80 }, { 0x12, 0x11, 0xca, 0x04, 0x3b }, { 0x14, 0x0c, 0x9e, 0xd0, 0x09 },
{ 0x14, 0x71, 0x35, 0xba, 0xe2 }, { 0x1a, 0xa4, 0x33, 0x21, 0xa6 }, { 0x26, 0xec, 0xc4, 0xa7, 0x4e },
{ 0x2c, 0xb2, 0xc1, 0x09, 0xee }, { 0x2f, 0x25, 0x9e, 0x96, 0xdd }, { 0x33, 0x2f, 0x49, 0x6c, 0xe0 },
{ 0x35, 0x5b, 0xc1, 0x31, 0x0f }, { 0x36, 0x67, 0xb2, 0xe3, 0x85 }, { 0x39, 0x3d, 0xf1, 0xf1, 0xbd },
{ 0x3b, 0x31, 0x34, 0x0d, 0x91 }, { 0x45, 0xed, 0x28, 0xeb, 0xd3 }, { 0x48, 0xb7, 0x6c, 0xce, 0x69 },
{ 0x4b, 0x65, 0x0d, 0xc1, 0xee }, { 0x4c, 0xbb, 0xf5, 0x5b, 0x23 }, { 0x51, 0x67, 0x67, 0xc5, 0xe0 },
{ 0x53, 0x94, 0xe1, 0x75, 0xbf }, { 0x57, 0x2c, 0x8b, 0x31, 0xae }, { 0x63, 0xdb, 0x4c, 0x5b, 0x4a },
{ 0x7b, 0x1e, 0x5e, 0x2b, 0x57 }, { 0x85, 0xf3, 0x85, 0xa0, 0xe0 }, { 0xab, 0x1e, 0xe7, 0x7b, 0x72 },
{ 0xab, 0x36, 0xe3, 0xeb, 0x76 }, { 0xb1, 0xb8, 0xf9, 0x38, 0x03 }, { 0xb8, 0x5d, 0xd8, 0x53, 0xbd },
{ 0xbf, 0x92, 0xc3, 0xb0, 0xe2 }, { 0xcf, 0x1a, 0xb2, 0xf8, 0x0a }, { 0xec, 0xa0, 0xcf, 0xb3, 0xff },
{ 0xfc, 0x95, 0xa9, 0x87, 0x35 }
{
0x01, 0xaf, 0xe3, 0x12, 0x80
},
{
0x12, 0x11, 0xca, 0x04, 0x3b
},
{
0x14, 0x0c, 0x9e, 0xd0, 0x09
},
{
0x14, 0x71, 0x35, 0xba, 0xe2
},
{
0x1a, 0xa4, 0x33, 0x21, 0xa6
},
{
0x26, 0xec, 0xc4, 0xa7, 0x4e
},
{
0x2c, 0xb2, 0xc1, 0x09, 0xee
},
{
0x2f, 0x25, 0x9e, 0x96, 0xdd
},
{
0x33, 0x2f, 0x49, 0x6c, 0xe0
},
{
0x35, 0x5b, 0xc1, 0x31, 0x0f
},
{
0x36, 0x67, 0xb2, 0xe3, 0x85
},
{
0x39, 0x3d, 0xf1, 0xf1, 0xbd
},
{
0x3b, 0x31, 0x34, 0x0d, 0x91
},
{
0x45, 0xed, 0x28, 0xeb, 0xd3
},
{
0x48, 0xb7, 0x6c, 0xce, 0x69
},
{
0x4b, 0x65, 0x0d, 0xc1, 0xee
},
{
0x4c, 0xbb, 0xf5, 0x5b, 0x23
},
{
0x51, 0x67, 0x67, 0xc5, 0xe0
},
{
0x53, 0x94, 0xe1, 0x75, 0xbf
},
{
0x57, 0x2c, 0x8b, 0x31, 0xae
},
{
0x63, 0xdb, 0x4c, 0x5b, 0x4a
},
{
0x7b, 0x1e, 0x5e, 0x2b, 0x57
},
{
0x85, 0xf3, 0x85, 0xa0, 0xe0
},
{
0xab, 0x1e, 0xe7, 0x7b, 0x72
},
{
0xab, 0x36, 0xe3, 0xeb, 0x76
},
{
0xb1, 0xb8, 0xf9, 0x38, 0x03
},
{
0xb8, 0x5d, 0xd8, 0x53, 0xbd
},
{
0xbf, 0x92, 0xc3, 0xb0, 0xe2
},
{
0xcf, 0x1a, 0xb2, 0xf8, 0x0a
},
{
0xec, 0xa0, 0xcf, 0xb3, 0xff
},
{
0xfc, 0x95, 0xa9, 0x87, 0x35
}
};
static readonly byte[] _cssTable1 =
@@ -259,7 +341,15 @@ public class CSS
static readonly byte[,] _permutationChallenge =
{
{ 1, 3, 0, 7, 5, 2, 9, 6, 4, 8 }, { 6, 1, 9, 3, 8, 5, 7, 4, 0, 2 }, { 4, 0, 3, 5, 7, 2, 8, 6, 1, 9 }
{
1, 3, 0, 7, 5, 2, 9, 6, 4, 8
},
{
6, 1, 9, 3, 8, 5, 7, 4, 0, 2
},
{
4, 0, 3, 5, 7, 2, 8, 6, 1, 9
}
};
static readonly byte[,] _permutationVariant =
@@ -280,7 +370,10 @@ public class CSS
0xF2, 0x2A, 0x79, 0x52, 0xFF, 0x1B, 0x7A, 0x11, 0xCA, 0x1A, 0x9B, 0x40, 0xAD, 0x01
};
static readonly byte[] _secret = { 0x55, 0xD6, 0xC4, 0xC5, 0x28 };
static readonly byte[] _secret =
{
0x55, 0xD6, 0xC4, 0xC5, 0x28
};
/// <summary>
/// The disc key returned by the logical unit is encoded with the bus key to prevent man-in-the-middle attacks.
@@ -291,8 +384,7 @@ public class CSS
/// <returns>A DiscKey struct with the decoded key.</returns>
public static CSS_CPRM.DiscKey? DecodeDiscKey(byte[] response, byte[] busKey)
{
if(response.Length != 2052 ||
busKey.Length != 5)
if(response.Length != 2052 || busKey.Length != 5)
return null;
byte[] key = response.Skip(4).Take(2048).ToArray();
@@ -318,8 +410,7 @@ public class CSS
/// <returns>A TitleKey struct with the decoded key.</returns>
public static CSS_CPRM.TitleKey? DecodeTitleKey(byte[] response, byte[] busKey)
{
if(response.Length != 12 ||
busKey.Length != 5)
if(response.Length != 12 || busKey.Length != 5)
return null;
byte[] key = response.Skip(5).Take(5).ToArray();
@@ -468,11 +559,12 @@ public class CSS
var lfsr1Lo = (uint)(cryptoKey[0] | 0x100);
uint lfsr1Hi = cryptoKey[1];
var lfsr0 = (uint)((cryptoKey[4] << 17 | cryptoKey[3] << 9 | cryptoKey[2] << 1) + 8 -
(cryptoKey[2] & 7));
var lfsr0 = (uint)((cryptoKey[4] << 17 | cryptoKey[3] << 9 | cryptoKey[2] << 1) + 8 - (cryptoKey[2] & 7));
lfsr0 = (uint)(_cssTable4[lfsr0 & 0xff] << 24 | _cssTable4[lfsr0 >> 8 & 0xff] << 16 |
_cssTable4[lfsr0 >> 16 & 0xff] << 8 | _cssTable4[lfsr0 >> 24 & 0xff]);
lfsr0 = (uint)(_cssTable4[lfsr0 & 0xff] << 24 |
_cssTable4[lfsr0 >> 8 & 0xff] << 16 |
_cssTable4[lfsr0 >> 16 & 0xff] << 8 |
_cssTable4[lfsr0 >> 24 & 0xff]);
uint combined = 0;
@@ -515,8 +607,8 @@ public class CSS
for(uint n = 0; n < _playerKeys.GetLength(0); n++)
{
byte[] currentPlayerKey = Enumerable.Range(0, _playerKeys.GetLength(1)).Select(x => _playerKeys[n, x]).
ToArray();
byte[] currentPlayerKey =
Enumerable.Range(0, _playerKeys.GetLength(1)).Select(x => _playerKeys[n, x]).ToArray();
for(uint i = 1; i < 409; i++)
{
@@ -546,8 +638,7 @@ public class CSS
uint blockSize = 2048)
{
// None of the sectors are encrypted
if(cmiData != null && cmiData.All(static cmi => (cmi & 0x80) >> 7 == 0) ||
keyData.All(static k => k == 0))
if(cmiData != null && cmiData.All(static cmi => (cmi & 0x80) >> 7 == 0) || keyData.All(static k => k == 0))
return sectorData;
var decryptedBuffer = new byte[sectorData.Length];
@@ -582,8 +673,7 @@ public class CSS
long lfsr1Lo = key[0] ^ sector[0x54] | 0x100;
long lfsr1Hi = key[1] ^ sector[0x55];
long lfsr0 = (key[2] | key[3] << 8 | key[4] << 16) ^
(sector[0x56] | sector[0x57] << 8 | sector[0x58] << 16);
long lfsr0 = (key[2] | key[3] << 8 | key[4] << 16) ^ (sector[0x56] | sector[0x57] << 8 | sector[0x58] << 16);
long oLfsr1 = lfsr0 & 7;
lfsr0 = lfsr0 * 2 + 8 - oLfsr1;
@@ -635,13 +725,11 @@ public class CSS
return false;
// The CMI tells us the sector is not encrypted.
if(cmi != null &&
(cmi & 0x80) >> 7 == 0)
if(cmi != null && (cmi & 0x80) >> 7 == 0)
return false;
// We have the key but it's all zeroes, so sector is unencrypted.
if(key != null &&
key.All(static k => k == 0))
if(key != null && key.All(static k => k == 0))
return false;
// These packet types cannot be encrypted
@@ -703,9 +791,7 @@ public class CSS
}
// If we found an adequate pattern.
if(bestPattern <= 0 ||
bestPatternLength <= 3 ||
bestPatternLength / bestPattern < 2)
if(bestPattern <= 0 || bestPatternLength <= 3 || bestPatternLength / bestPattern < 2)
return false;
var offset = (int)(0x80 - bestPatternLength / bestPattern * bestPattern);
@@ -890,8 +976,7 @@ public class CSS
if(fs.OpenDir("VIDEO_TS", out IDirNode node) == ErrorNumber.NoError)
{
while(fs.ReadDir(node, out string entry) == ErrorNumber.NoError &&
entry is not null)
while(fs.ReadDir(node, out string entry) == ErrorNumber.NoError && entry is not null)
{
if(!entry.ToLower().EndsWith(".vob"))
continue;

19
DVD/Dump.cs
View File

@@ -73,8 +73,8 @@ public sealed class Dump(Device dev)
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms,
duration, Agid, sense, dev.LastError);
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms, duration,
Agid, sense, dev.LastError);
return sense;
}
@@ -101,8 +101,8 @@ public sealed class Dump(Device dev)
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms,
duration, Agid, sense, dev.LastError);
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms, duration,
Agid, sense, dev.LastError);
return sense;
}
@@ -157,9 +157,8 @@ public sealed class Dump(Device dev)
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
AaruConsole.DebugWriteLine(MODULE_NAME,
Localization.REPORT_AGID_CSS_CPPM_AGID_1_Sense_2_Last_Error_3_took_0_ms, duration,
Agid, sense, dev.LastError);
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_AGID_CSS_CPPM_AGID_1_Sense_2_Last_Error_3_took_0_ms,
duration, Agid, sense, dev.LastError);
return sense;
}
@@ -253,8 +252,7 @@ public sealed class Dump(Device dev)
buffer[12] = challengeKey[1];
buffer[13] = challengeKey[0];
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration,
out bool sense);
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration, out bool sense);
AaruConsole.DebugWriteLine(MODULE_NAME,
Localization.SEND_CHALLENGE_AGID_1_Challenge_2_Sense_3_Last_Error_4_took_0_ms,
@@ -291,8 +289,7 @@ public sealed class Dump(Device dev)
buffer[7] = key2[1];
buffer[8] = key2[0];
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration,
out bool sense);
dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration, out bool sense);
AaruConsole.DebugWriteLine(MODULE_NAME,
Localization.SEND_CHALLENGE_AGID_1_KEY2_2_Sense_3_Last_Error_4_took_0_ms, duration,

5
DVD/MPEG.cs
View File

@@ -127,7 +127,10 @@ public class MPEG
#endregion
static readonly byte[] _mpeg2PackHeaderStartCode = { 0x0, 0x0, 0x1 };
static readonly byte[] _mpeg2PackHeaderStartCode =
{
0x0, 0x0, 0x1
};
public static bool ContainsMpegPackets(byte[] sectorData, uint blocks = 1, uint blockSize = 2048)
{