public static byte[] XTS(byte[] Key1, byte[] Key2, int SectorSize, byte[] Data, ulong Sector, bool Encrypt)
{
byte[] TransformedBytes, BlockData;
Xts XTS128 = XtsAes128.Create(Key1, Key2);
int Blocks;
var MemStrm = new MemoryStream();
var Writer = new BinaryWriter(MemStrm);
XtsCryptoTransform CryptoTransform;
if (Encrypt)
{
CryptoTransform = XTS128.CreateEncryptor();
}
else
{
CryptoTransform = XTS128.CreateDecryptor();
}
BlockData = new byte[SectorSize];
Blocks = Data.Length / SectorSize;
for (int i = 0; i < Blocks; i++)
{
CryptoTransform.TransformBlock(Data, i * SectorSize, SectorSize, BlockData, 0, Sector++);
Writer.Write(BlockData);
}
TransformedBytes = MemStrm.ToArray();
return(TransformedBytes);
}
public override void Write(byte[] buffer, int offset, int count)
{
ValidateSize(count);
if (count == 0)
{
return;
}
var currentSector = CurrentSector;
if (_encryptor == null)
{
_encryptor = _xts.CreateEncryptor();
}
int transformedCount = _encryptor.TransformBlock(buffer, offset, count, _tempBuffer, 0, currentSector);
base.Write(_tempBuffer, 0, transformedCount);
}