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UntrueProgram.cs
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UntrueProgram.cs
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//Developed by Richard Turnbull, Richard [dot] Turnbull [at] nccgroup [dot] com
//
//http://www.github.com/nccgroup/untrue
//
//Released under AGPL see LICENSE for more information
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NDesk.Options;
using System.IO;
using System.Text.RegularExpressions;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Macs;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Digests;
using System.Security.Cryptography;
using Org.BouncyCastle.Crypto.Engines;
namespace _7Zip_And_TrueCrypt_Password_Cracker
{
public enum TDHashAlgorithm { RIPEMD, RIPEMD_SYSTEM, WHIRLPOOL, SHA512 };
public enum TDEncryptionAlgorithm { AES, SERPENT, TWOFISH, AES_TWOFISH, AES_TWOFISH_SERPENT, SERPENT_AES, SERPENT_TWOFISH_AES, TWOFISH_SERPENT };
public enum SectorGuess { ZEROS, TRUECRYPT_MBR, STANDARD_MBR, FAT_HEADER, NTFS_HEADER, CIPHERTEXT, PLAINTEXT };
class UntrueProgram
{
public static string UNTRUE_VERSION = "0.9";
public static int SECTOR_SIZE = 0x200;
public static int VOLUME_HEADER_SIZE = SECTOR_SIZE;
public static int TRUECRYPT_SALT_LENGTH = 64;
public static int VOLUME_HEADER_LENGTH_WITHOUT_SALT = VOLUME_HEADER_SIZE - TRUECRYPT_SALT_LENGTH;
public static int PBKDF2_OUTPUT_LENGTH = 3 * 32 * 2;
public static int TRUECRYPT_KEYPOOL_LENGTH = 64;
public static int TRUECRYPT_KEYPOOL_CHUNKSIZE = 64 * 1024;
public static int TRUECRYPT_KEYPOOL_MAXSIZE = 1024 * 1024;
public static int RIPEMD_ITERATIONS = 2000;
public static int RIPEMD_SYSTEM_ITERATIONS = 1000;
public static int SHA512_ITERATIONS = 1000;
public static int WHIRLPOOL_ITERATIONS = 1000;
public static int VOLUME_HEADER_SECTOR_ON_RESCUE_DISK = 0xA6; // rescue disk image starts with 0x68 blank sectors, then a copy of the first track with volume header at sector 0x3E
public static int VOLUME_HEADER_SECTOR_ON_FIRST_TRACK = 0x3E;
static int verbosity = 1;
// x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1 IEEE802.3 crc polynomial
// 0000 0100 1100 0001 0001 1101 1011 0111
// 0x04c11db7
public static UInt32[] crc_32_tab =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
static FileStream passwordKeyFile = null;
static FileStream keyFile = null;
static FileStream volumeHeaderFile = null;
static FileStream inputFile = null;
static FileStream outputFile = null;
static int KeyLengthForEncryptionAlgorithm(TDEncryptionAlgorithm ea)
{
switch (ea)
{
case TDEncryptionAlgorithm.AES:
case TDEncryptionAlgorithm.SERPENT:
case TDEncryptionAlgorithm.TWOFISH:
return 64; // 256 bits + 256 bits
case TDEncryptionAlgorithm.AES_TWOFISH:
case TDEncryptionAlgorithm.SERPENT_AES:
case TDEncryptionAlgorithm.TWOFISH_SERPENT:
return 128;
case TDEncryptionAlgorithm.AES_TWOFISH_SERPENT:
case TDEncryptionAlgorithm.SERPENT_TWOFISH_AES:
return 192;
}
return -1;
}
static string HashAlgorithmFriendlyName(TDHashAlgorithm ha)
{
switch (ha)
{
case TDHashAlgorithm.SHA512:
return "SHA-512";
case TDHashAlgorithm.WHIRLPOOL:
return "Whirlpool";
case TDHashAlgorithm.RIPEMD:
return "RIPEMD-160 (standard version with 2000 iterations)";
case TDHashAlgorithm.RIPEMD_SYSTEM:
return "RIPEMD-160 (system encryption version with 1000 iterations)";
}
return "";
}
static string EncryptionAlgorithmFriendlyName(TDEncryptionAlgorithm ea)
{
switch (ea)
{
case TDEncryptionAlgorithm.AES:
return "AES";
case TDEncryptionAlgorithm.SERPENT:
return "Serpent";
case TDEncryptionAlgorithm.TWOFISH:
return "Twofish";
case TDEncryptionAlgorithm.AES_TWOFISH:
return "AES-Twofish";
case TDEncryptionAlgorithm.AES_TWOFISH_SERPENT:
return "AES-Twofish-Serpent";
case TDEncryptionAlgorithm.SERPENT_AES:
return "Serpent-AES";
case TDEncryptionAlgorithm.SERPENT_TWOFISH_AES:
return "Serpent-Twofish-AES";
case TDEncryptionAlgorithm.TWOFISH_SERPENT:
return "Twofish-Serpent";
}
return "";
}
static string EncryptionEngineFriendlyName(IBlockCipher bc)
{
if (bc is RijndaelEngine)
{
return "AES";
}
else if (bc is TwofishEngine)
{
return "Twofish";
}
else if (bc is SerpentEngine)
{
return "Serpent";
}
return "";
}
static void ShowHelp(OptionSet p)
{
Console.WriteLine("Usage: Untrue.exe");
Console.WriteLine();
Console.WriteLine("Options:");
p.WriteOptionDescriptions(Console.Out);
}
static void ShowVersion()
{
Console.WriteLine("Untrue version {0}", UNTRUE_VERSION);
Console.WriteLine("by Richard Turnbull, NCC Group");
}
static void UsageWarning(string s)
{
Console.WriteLine("Warning: {0}", s);
}
static void UsageError(string s)
{
Console.WriteLine("Error: {0}", s);
if (inputFile != null) inputFile.Close();
if (outputFile != null) outputFile.Close();
if (keyFile != null) outputFile.Close();
if (volumeHeaderFile != null) volumeHeaderFile.Close();
System.Environment.Exit(1);
}
static SectorGuess GuessSectorFormat(byte[] sector)
{
bool allZeros = true;
for (int ii = 0; ii < SECTOR_SIZE; ii++)
{
if (sector[ii] != 0)
{
allZeros = false;
break;
}
}
if (allZeros)
{
return SectorGuess.ZEROS;
}
string s = System.Text.Encoding.ASCII.GetString(sector);
if (s.Contains("TrueCrypt Boot Loader"))
{
return SectorGuess.TRUECRYPT_MBR;
}
double score = Utils.CalculateChiSquareTestStatisticOnBytes(sector);
// P(false_plaintext_positive) = 0.0001
if (score < 347.6539)
{
return SectorGuess.CIPHERTEXT;
}
else
{
if (sector[SECTOR_SIZE - 2] == 0x55 && sector[SECTOR_SIZE - 1] == 0xAA)
{
if (s.Contains("NTFS"))
{
return SectorGuess.NTFS_HEADER;
}
else if (s.Contains("FAT"))
{
return SectorGuess.FAT_HEADER;
}
else
{
return SectorGuess.STANDARD_MBR;
}
}
else
{
return SectorGuess.PLAINTEXT;
}
}
}
public static void XorBlockInto(byte[] block1, int offset1, int count, byte[] block2, int offset2, byte[] output, int outputOffset)
{
if ((offset1 + count > block1.Length) || (offset2 + count > block2.Length) || (outputOffset + count > output.Length))
{
throw new ArgumentException("Bad block lengths passed in to xorBlock()");
}
for (int ii = 0; ii < count; ii++)
{
output[outputOffset + ii] = (byte)(block1[ii + offset1] ^ block2[ii + offset2]);
}
}
private static byte[] XtsTransformSector(
ICryptoTransform primaryKeyEncrypt,
ICryptoTransform primaryKeyDecrypt,
ICryptoTransform secondaryKeyEncrypt,
byte[] ciphertext,
long sectorNumber,
bool isDecrypt)
{
int blockLengthInBytes = 16;
byte[] IV = new byte[blockLengthInBytes];
for (int ii = 15; ii >= 8; ii--)
{
IV[15 - ii] = (byte)((sectorNumber >> (8 * (15 - ii))) & 0xff);
}
if (isDecrypt)
{
byte[] EK2 = secondaryKeyEncrypt.TransformFinalBlock(IV, 0, IV.Length);
byte[] plaintext = new byte[ciphertext.Length];
byte[] buffer = new byte[blockLengthInBytes];
byte[] buffer2;
for (int ii = 0; ii < ciphertext.Length; ii += blockLengthInBytes)
{
XorBlockInto(ciphertext, ii, blockLengthInBytes, EK2, 0, buffer, 0);
buffer2 = primaryKeyDecrypt.TransformFinalBlock(buffer, 0, buffer.Length);
XorBlockInto(buffer2, 0, blockLengthInBytes, EK2, 0, plaintext, ii);
UpdateEK2(EK2);
}
return plaintext;
}
else
{
byte[] EK2 = secondaryKeyEncrypt.TransformFinalBlock(IV, 0, IV.Length);
byte[] plaintext = new byte[ciphertext.Length];
byte[] buffer = new byte[blockLengthInBytes];
byte[] buffer2;
for (int ii = 0; ii < ciphertext.Length; ii += blockLengthInBytes)
{
XorBlockInto(ciphertext, ii, blockLengthInBytes, EK2, 0, buffer, 0);
buffer2 = primaryKeyEncrypt.TransformFinalBlock(buffer, 0, buffer.Length);
XorBlockInto(buffer2, 0, blockLengthInBytes, EK2, 0, plaintext, ii);
UpdateEK2(EK2);
}
return plaintext;
}
}
private static byte[] XtsTransformSectorBC(
IBlockCipher primaryTransform,
IBlockCipher secondaryTransform,
byte[] ciphertext,
long sectorNumber)
{
bool isSerpent = (primaryTransform is SerpentEngine);
int blockLengthInBytes = 16;
byte[] IV = new byte[blockLengthInBytes];
for (int ii = 15; ii >= 8; ii--)
{
IV[15 - ii] = (byte)((sectorNumber >> (8 * (15 - ii))) & 0xff);
}
byte[] EK2 = new byte[blockLengthInBytes];
if (isSerpent) IV = Utils.ByteArrayReverse(IV);
secondaryTransform.ProcessBlock(IV, 0, EK2, 0);
if (isSerpent) EK2 = Utils.ByteArrayReverse(EK2);
byte[] plaintext = new byte[ciphertext.Length];
byte[] buffer = new byte[blockLengthInBytes];
byte[] buffer2 = new byte[blockLengthInBytes];
for (int ii = 0; ii < ciphertext.Length; ii += blockLengthInBytes)
{
XorBlockInto(ciphertext, ii, blockLengthInBytes, EK2, 0, buffer, 0);
if (isSerpent) buffer = Utils.ByteArrayReverse(buffer);
primaryTransform.ProcessBlock(buffer, 0, buffer2, 0);
if (isSerpent) buffer2 = Utils.ByteArrayReverse(buffer2);
XorBlockInto(buffer2, 0, blockLengthInBytes, EK2, 0, plaintext, ii);
UpdateEK2(EK2);
}
return plaintext;
}
private static void UpdateEK2(byte[] EK2)
{
byte carriedBit = 0, topBit = 0;
for (int ii = 0; ii < 16; ii++)
{
topBit = (byte)(EK2[ii] >> 7);
EK2[ii] = (byte)(((EK2[ii] << 1) | carriedBit) & 0xFF);
carriedBit = topBit;
}
if (topBit > 0)
{
EK2[0] ^= 0x87;
}
}
private static bool VolumeHeaderIsValid(byte[] volumeHeaderBytes)
{
if ((volumeHeaderBytes[0] == (byte)'T') &&
(volumeHeaderBytes[1] == (byte)'R') &&
(volumeHeaderBytes[2] == (byte)'U') &&
(volumeHeaderBytes[3] == (byte)'E'))
{
return true;
}
return false;
}
private static bool KeyFileProcess(byte[] keyPool, string kf)
{
byte[] data = new byte[TRUECRYPT_KEYPOOL_CHUNKSIZE];
UInt32 crc = 0xffffffff;
Int32 chunkNumber = 0;
int bytesRead, writePos, totalRead;
writePos = 0;
totalRead = 0;
try
{
passwordKeyFile = File.Open(kf, FileMode.Open, FileAccess.Read);
passwordKeyFile.Seek(chunkNumber * TRUECRYPT_KEYPOOL_CHUNKSIZE, SeekOrigin.Begin);
bool fileKeyPoolDone = false;
while (((bytesRead = passwordKeyFile.Read(data, 0, TRUECRYPT_KEYPOOL_CHUNKSIZE)) > 0) && (!fileKeyPoolDone))
{
for (Int32 i = 0; ((i < bytesRead) && (!fileKeyPoolDone)); i++)
{
crc = crc_32_tab[(crc ^ data[i]) & 0xff] ^ (crc >> 8);
keyPool[writePos++] += (byte)(crc >> 24);
keyPool[writePos++] += (byte)(crc >> 16);
keyPool[writePos++] += (byte)(crc >> 8);
keyPool[writePos++] += (byte)(crc);
if (writePos >= TRUECRYPT_KEYPOOL_LENGTH)
{
writePos = 0;
}
if (++totalRead >= TRUECRYPT_KEYPOOL_MAXSIZE)
{
fileKeyPoolDone = true;
}
}
}
passwordKeyFile.Close();
}
catch (IOException)
{
UsageWarning(String.Format("Couldn't open password key file {0} for reading", kf));
return false;
}
return true;
}
private static VolumeHeaderResult DecryptVolumeHeader(byte[] volumeHeaderBytes, string password, string passwordKeyFiles, Dictionary<TDHashAlgorithm, bool> hashAlgorithmsEnabled, Dictionary<TDEncryptionAlgorithm, bool> encryptionAlgorithmsEnabled)
{
VolumeHeaderResult result = new VolumeHeaderResult();
result.Success = false;
Log(2, "Trying to decrypt volume header...");
Int32 passwordLen = password.Length;
byte[] passwordTempBytes = new byte[TRUECRYPT_KEYPOOL_LENGTH];
System.Text.Encoding.ASCII.GetBytes(password).CopyTo(passwordTempBytes, 0);
if (passwordKeyFiles != null)
{
try
{
byte[] keyPool = new byte[TRUECRYPT_KEYPOOL_LENGTH];
bool processedFile = false;
int isEof;
StreamReader passwordKeyFileList = new StreamReader(passwordKeyFiles);
while ((isEof = passwordKeyFileList.Peek()) >= 0)
{
bool flagErr;
flagErr = false;
processedFile = true;
string fn = passwordKeyFileList.ReadLine();
bool? isfile;
if ((isfile = Utils.IsDirFile(fn)) == null)
{
flagErr = true;
UsageWarning(String.Format("The password_key_files is missing a file or has an incorrect file specified."));
}
else if (isfile == true)
{
Log(3, "keyfile: " + fn);
if (!KeyFileProcess(keyPool, fn))
{
flagErr = true;
UsageWarning(String.Format("The password_key_files is missing a file or has an incorrect file specified."));
}
}
else
{
string[] filePaths = Directory.GetFiles(fn);
for (Int32 i = 0; i < filePaths.Length; i++)
{
fn = filePaths[i];
bool? isFileInPath;
if ((isFileInPath = Utils.IsDirFile(fn)) == null)
{
flagErr = true;
}
else if (isFileInPath == true)
{
var fileAttr = File.GetAttributes(fn);
if (!fileAttr.HasFlag(FileAttributes.Hidden))
{
Log(3, "keyfile: " + fn);
if (!KeyFileProcess(keyPool, fn))
{
flagErr = true;
UsageWarning(String.Format("A key file on the specified path failed."));
}
}
else
{
UsageWarning(String.Format("Warning: Hidden files are on the key file path."));
}
}
else
{
// Do not recurse paths
}
}
}
if (flagErr)
{
passwordKeyFileList.Close();
throw new IOException("");
}
}
if (!processedFile)
{
passwordKeyFileList.Close();
throw new IOException("");
}
passwordKeyFileList.Close();
for (Int32 i = 0; i < TRUECRYPT_KEYPOOL_LENGTH; i++)
{
passwordTempBytes[i] += keyPool[i];
}
passwordLen = TRUECRYPT_KEYPOOL_LENGTH;
}
catch (IOException)
{
UsageError(String.Format("password_key_files is specified on command line but no file, incorrect file or empty file was specified."));
}
}
byte[] passwordBytes = new byte[passwordLen];
Array.Copy(passwordTempBytes, passwordBytes, passwordLen);
byte[] salt = new byte[TRUECRYPT_SALT_LENGTH];
Array.Copy(volumeHeaderBytes, salt, TRUECRYPT_SALT_LENGTH);
Log(3, "\n\tSalt : " + Utils.ByteArrayToHexString(salt));
byte[] encryptedVolumeHeader = new byte[VOLUME_HEADER_LENGTH_WITHOUT_SALT];
Array.Copy(volumeHeaderBytes, TRUECRYPT_SALT_LENGTH, encryptedVolumeHeader, 0, VOLUME_HEADER_LENGTH_WITHOUT_SALT);
Log(3, "\tEncrypted header: " + Utils.ByteArrayToHexString(encryptedVolumeHeader));
Log(3, "\tPassword bytes: " + Utils.ByteArrayToHexString(passwordBytes) + "\n");
foreach (TDHashAlgorithm ha in Enum.GetValues(typeof(TDHashAlgorithm)))
{
if (!hashAlgorithmsEnabled[ha])
{
continue;
}
PBKDF2 pbkdf2 = null;
int iterations = 0;
switch (ha)
{
case TDHashAlgorithm.RIPEMD:
pbkdf2 = new PBKDF2(new RipeMD160Digest());
iterations = RIPEMD_ITERATIONS;
break;
case TDHashAlgorithm.RIPEMD_SYSTEM:
pbkdf2 = new PBKDF2(new RipeMD160Digest());
iterations = RIPEMD_SYSTEM_ITERATIONS;
break;
case TDHashAlgorithm.WHIRLPOOL:
pbkdf2 = new PBKDF2(new WhirlpoolDigest());
iterations = WHIRLPOOL_ITERATIONS;
break;
case TDHashAlgorithm.SHA512:
pbkdf2 = new PBKDF2(new Sha512Digest());
iterations = SHA512_ITERATIONS;
break;
}
Log(2, "\tTrying hash algorithm: " + HashAlgorithmFriendlyName(ha));
byte[] key = pbkdf2.GetBytes(PBKDF2_OUTPUT_LENGTH, passwordBytes, salt, iterations);
Log(3, "\t\tDerived key: " + Utils.ByteArrayToHexString(key));
byte[] primaryKey1 = new byte[32];
byte[] secondaryKey1 = new byte[32];
byte[] primaryKey2 = new byte[32];
byte[] secondaryKey2 = new byte[32];
byte[] primaryKey3 = new byte[32];
byte[] secondaryKey3 = new byte[32];
foreach (TDEncryptionAlgorithm ea in Enum.GetValues(typeof(TDEncryptionAlgorithm)))
{
IBlockCipher primaryTransform1 = null;
IBlockCipher secondaryTransform1 = null;
IBlockCipher primaryTransform2 = null;
IBlockCipher secondaryTransform2 = null;
IBlockCipher primaryTransform3 = null;
IBlockCipher secondaryTransform3 = null;
if (!encryptionAlgorithmsEnabled[ea])
{
continue;
}
switch (ea)
{
case TDEncryptionAlgorithm.AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
break;
case TDEncryptionAlgorithm.SERPENT:
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
primaryKey1 = Utils.ByteArrayReverse(primaryKey1);
secondaryKey1 = Utils.ByteArrayReverse(secondaryKey1);
break;
case TDEncryptionAlgorithm.TWOFISH:
primaryTransform1 = new TwofishEngine();
secondaryTransform1 = new TwofishEngine();
break;
case TDEncryptionAlgorithm.AES_TWOFISH:
primaryTransform2 = new RijndaelEngine();
secondaryTransform2 = new RijndaelEngine();
primaryTransform1 = new TwofishEngine();
secondaryTransform1 = new TwofishEngine();
break;
case TDEncryptionAlgorithm.AES_TWOFISH_SERPENT:
primaryTransform3 = new RijndaelEngine();
secondaryTransform3 = new RijndaelEngine();
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.SERPENT_AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
primaryTransform2 = new SerpentEngine();
secondaryTransform2 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.SERPENT_TWOFISH_AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform3 = new SerpentEngine();
secondaryTransform3 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.TWOFISH_SERPENT:
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
break;
}
Log(2, "\t\tTrying encryption algorithm: " + EncryptionAlgorithmFriendlyName(ea));
if (primaryTransform2 == null)
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, secondaryKey1, 0, 32);
}
else if (primaryTransform3 == null)
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, primaryKey2, 0, 32);
Array.Copy(key, 64, secondaryKey1, 0, 32);
Array.Copy(key, 96, secondaryKey2, 0, 32);
}
else
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, primaryKey2, 0, 32);
Array.Copy(key, 64, primaryKey3, 0, 32);
Array.Copy(key, 96, secondaryKey1, 0, 32);
Array.Copy(key, 128, secondaryKey2, 0, 32);
Array.Copy(key, 160, secondaryKey3, 0, 32);
}
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform1) + " with primary key: " + Utils.ByteArrayToHexString(primaryKey1));
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform1) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey1));
if (primaryTransform1 is SerpentEngine)
{
primaryKey1 = Utils.ByteArrayReverse(primaryKey1);
secondaryKey1 = Utils.ByteArrayReverse(secondaryKey1);
}
primaryTransform1.Init(false, new KeyParameter(primaryKey1));
secondaryTransform1.Init(true, new KeyParameter(secondaryKey1));
if (primaryTransform2 != null)
{
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform2) + " with primary key: " + Utils.ByteArrayToHexString(primaryKey2));
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform2) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey2));
if (primaryTransform2 is SerpentEngine)
{
primaryKey2 = Utils.ByteArrayReverse(primaryKey2);
secondaryKey2 = Utils.ByteArrayReverse(secondaryKey2);
}
primaryTransform2.Init(false, new KeyParameter(primaryKey2));
secondaryTransform2.Init(true, new KeyParameter(secondaryKey2));
}
if (primaryTransform3 != null)
{
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform3) + " with primary key: " + Utils.ByteArrayToHexString(primaryKey3));
Log(3, "\t\t\tInitialising " + EncryptionEngineFriendlyName(primaryTransform3) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey3));
if (primaryTransform3 is SerpentEngine)
{
primaryKey3 = Utils.ByteArrayReverse(primaryKey3);
secondaryKey3 = Utils.ByteArrayReverse(secondaryKey3);
}
primaryTransform3.Init(false, new KeyParameter(primaryKey3));
secondaryTransform3.Init(true, new KeyParameter(secondaryKey3));
}
byte[] decryptedVolumeHeader = null;
if (primaryTransform2 == null)
{
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform1) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform1,
secondaryTransform1,
encryptedVolumeHeader,
0);
Log(3, "\t\t\tDecrypted header: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
}
else if (primaryTransform3 == null)
{
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform2) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform2,
secondaryTransform2,
encryptedVolumeHeader,
0);
Log(3, "\t\t\tIntermediate output: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform1) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform1,
secondaryTransform1,
decryptedVolumeHeader,
0);
Log(3, "\t\t\tDecrypted header: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
}
else
{
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform3) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform3,
secondaryTransform3,
encryptedVolumeHeader,
0);
Log(3, "\t\t\tIntermediate output: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform2) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform2,
secondaryTransform2,
decryptedVolumeHeader,
0);
Log(3, "\t\t\tIntermediate output: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
Log(3, "\t\t\tRunning " + EncryptionEngineFriendlyName(primaryTransform1) + " decryption...");
decryptedVolumeHeader = XtsTransformSectorBC(
primaryTransform1,
secondaryTransform1,
decryptedVolumeHeader,
0);
Log(3, "\t\t\tDecrypted header: " + Utils.ByteArrayToHexString(decryptedVolumeHeader));
}
if (VolumeHeaderIsValid(decryptedVolumeHeader))
{
Log(2, "\t\t\tSuccess!");
result.Success = true;
result.ea = ea;
result.ha = ha;
result.CiphertextOffset = Utils.ReadLongFromByteArray(decryptedVolumeHeader, 0x2C);
result.CiphertextLength = Utils.ReadLongFromByteArray(decryptedVolumeHeader, 0x24);
result.VolumeKey = new byte[PBKDF2_OUTPUT_LENGTH];
Array.Copy(decryptedVolumeHeader, 0xC0, result.VolumeKey, 0, PBKDF2_OUTPUT_LENGTH);
Log(2, "Encryption algorithm for volume: " + EncryptionAlgorithmFriendlyName(result.ea));
Log(2, String.Format("Ciphertext offset (sector) : 0x{0:x}", result.CiphertextOffset / SECTOR_SIZE));
Log(2, String.Format("Ciphertext length (sectors) : 0x{0:x}", result.CiphertextLength / SECTOR_SIZE));
Log(3, "Volume encryption key : " + Utils.ByteArrayToHexString(result.VolumeKey));
return result;
}
else
{
Log(2, "\t\t\tFailure");
}
}
}
return result;
}
static byte[] ProcessDiskSector(
byte[] ciphertext,
long sectorNumber,
IBlockCipher primaryTransform1,
IBlockCipher secondaryTransform1,
IBlockCipher primaryTransform2,
IBlockCipher secondaryTransform2,
IBlockCipher primaryTransform3,
IBlockCipher secondaryTransform3,
bool log,
bool decrypting)
{
byte[] plaintext = new byte[ciphertext.Length];
if (log) Log(3, (decrypting ? "Ciphertext" : "Plaintext") + ": " + Utils.ByteArrayToHexString(ciphertext));
if (primaryTransform3 != null)
{
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform1) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform3, secondaryTransform3, ciphertext, sectorNumber);
if (log) Log(3, "Intermediate output: " + Utils.ByteArrayToHexString(plaintext));
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform2) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform2, secondaryTransform2, plaintext, sectorNumber);
if (log) Log(3, "Intermediate output: " + Utils.ByteArrayToHexString(plaintext));
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform1) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform1, secondaryTransform1, plaintext, sectorNumber);
}
else if (primaryTransform2 != null)
{
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform2) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform2, secondaryTransform2, ciphertext, sectorNumber);
if (log) Log(3, "Intermediate output: " + Utils.ByteArrayToHexString(plaintext));
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform1) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform1, secondaryTransform1, plaintext, sectorNumber);
}
else
{
if (log) Log(3, "Running " + EncryptionEngineFriendlyName(primaryTransform1) + " " + (decrypting ? "decryption" : "encryption"));
plaintext = XtsTransformSectorBC(primaryTransform1, secondaryTransform1, ciphertext, sectorNumber);
}
if (log) Log(3, (decrypting ? "Plaintext" : "Ciphertext") + ": " + Utils.ByteArrayToHexString(plaintext));
return plaintext;
}
static void ProcessSectors(FileStream inputFile, FileStream outputFile, long startOffset, long startSectorNumber, long sectorsToProcess, byte[] key, TDEncryptionAlgorithm ea, bool decrypt)
{
IBlockCipher primaryTransform1 = null;
IBlockCipher secondaryTransform1 = null;
IBlockCipher primaryTransform2 = null;
IBlockCipher secondaryTransform2 = null;
IBlockCipher primaryTransform3 = null;
IBlockCipher secondaryTransform3 = null;
byte[] primaryKey1 = new byte[32];
byte[] secondaryKey1 = new byte[32];
byte[] primaryKey2 = new byte[32];
byte[] secondaryKey2 = new byte[32];
byte[] primaryKey3 = new byte[32];
byte[] secondaryKey3 = new byte[32];
Log(2, "Preparing to " + (decrypt ? "decrypt" : "encrypt") + " " + sectorsToProcess.ToString() + " sectors...");
switch (ea)
{
case TDEncryptionAlgorithm.AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
break;
case TDEncryptionAlgorithm.SERPENT:
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
primaryKey1 = Utils.ByteArrayReverse(primaryKey1);
secondaryKey1 = Utils.ByteArrayReverse(secondaryKey1);
break;
case TDEncryptionAlgorithm.TWOFISH:
primaryTransform1 = new TwofishEngine();
secondaryTransform1 = new TwofishEngine();
break;
case TDEncryptionAlgorithm.AES_TWOFISH:
primaryTransform2 = new RijndaelEngine();
secondaryTransform2 = new RijndaelEngine();
primaryTransform1 = new TwofishEngine();
secondaryTransform1 = new TwofishEngine();
break;
case TDEncryptionAlgorithm.AES_TWOFISH_SERPENT:
primaryTransform3 = new RijndaelEngine();
secondaryTransform3 = new RijndaelEngine();
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.SERPENT_AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
primaryTransform2 = new SerpentEngine();
secondaryTransform2 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.SERPENT_TWOFISH_AES:
primaryTransform1 = new RijndaelEngine();
secondaryTransform1 = new RijndaelEngine();
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform3 = new SerpentEngine();
secondaryTransform3 = new SerpentEngine();
break;
case TDEncryptionAlgorithm.TWOFISH_SERPENT:
primaryTransform2 = new TwofishEngine();
secondaryTransform2 = new TwofishEngine();
primaryTransform1 = new SerpentEngine();
secondaryTransform1 = new SerpentEngine();
break;
}
if (primaryTransform2 == null)
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, secondaryKey1, 0, 32);
}
else if (primaryTransform3 == null)
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, primaryKey2, 0, 32);
Array.Copy(key, 64, secondaryKey1, 0, 32);
Array.Copy(key, 96, secondaryKey2, 0, 32);
}
else
{
Array.Copy(key, 0, primaryKey1, 0, 32);
Array.Copy(key, 32, primaryKey2, 0, 32);
Array.Copy(key, 64, primaryKey3, 0, 32);
Array.Copy(key, 96, secondaryKey1, 0, 32);
Array.Copy(key, 128, secondaryKey2, 0, 32);
Array.Copy(key, 160, secondaryKey3, 0, 32);
}
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform1) + " for " + (decrypt ? "decryption" : "encryption") + " with primary key: " + Utils.ByteArrayToHexString(primaryKey1));
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform1) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey1));
if (primaryTransform1 is SerpentEngine)
{
primaryKey1 = Utils.ByteArrayReverse(primaryKey1);
secondaryKey1 = Utils.ByteArrayReverse(secondaryKey1);
}
primaryTransform1.Init(!decrypt, new KeyParameter(primaryKey1));
secondaryTransform1.Init(true, new KeyParameter(secondaryKey1));
if (primaryTransform2 != null)
{
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform2) + " for " + (decrypt ? "decryption" : "encryption") + " with primary key: " + Utils.ByteArrayToHexString(primaryKey2));
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform2) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey2));
if (primaryTransform2 is SerpentEngine)
{
primaryKey2 = Utils.ByteArrayReverse(primaryKey2);
secondaryKey2 = Utils.ByteArrayReverse(secondaryKey2);
}
primaryTransform2.Init(!decrypt, new KeyParameter(primaryKey2));
secondaryTransform2.Init(true, new KeyParameter(secondaryKey2));
}
if (primaryTransform3 != null)
{
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform3) + " for " + (decrypt ? "decryption" : "encryption") + " with primary key: " + Utils.ByteArrayToHexString(primaryKey3));
Log(3, "Initialising " + EncryptionEngineFriendlyName(primaryTransform3) + " with secondary key: " + Utils.ByteArrayToHexString(secondaryKey3));
if (primaryTransform3 is SerpentEngine)
{
primaryKey3 = Utils.ByteArrayReverse(primaryKey3);