protected override void WriteImpl(ReadOnlySpan <byte> source, long offset)
{
int size = source.Length;
long sectorIndex = offset / SectorSize;
if (_encryptor == null)
{
_encryptor = new Aes128XtsTransform(_key1, _key2, false);
}
source.CopyTo(_tempBuffer);
_encryptor.TransformBlock(_tempBuffer, 0, size, (ulong)sectorIndex);
base.WriteImpl(_tempBuffer.AsSpan(0, size), offset);
}
protected override void ReadImpl(Span <byte> destination, long offset)
{
int size = destination.Length;
long sectorIndex = offset / SectorSize;
if (_decryptor == null)
{
_decryptor = new Aes128XtsTransform(_key1, _key2, true);
}
base.ReadImpl(_tempBuffer.AsSpan(0, size), offset);
_decryptor.TransformBlock(_tempBuffer, 0, size, (ulong)sectorIndex);
_tempBuffer.AsSpan(0, size).CopyTo(destination);
}