public RoundKeyProvider(byte[] encryptionKey,
IKeyExpander expander,
IConvertProcessor <List <byte[, ]>, byte[]> processor)
{
byte[] expandedKey = expander.ExpandKey(encryptionKey);
_keys = processor.ConvertTo(expandedKey);
KeysNumber = _keys.Count;
}
public byte[] Decrypt(byte[] key, IDataSource dataSource)
{
List <byte[, ]> blocks = _dataProcessor.ConvertTo(dataSource.GetData());
AesAlgorithmImp aes = _algorithmFactory.GetAlgorithm(key);
List <byte[, ]> decryptedBlocks = aes.Decrypt(blocks);
return(_padDataProcessor.ConvertBack(decryptedBlocks));
}