namespace Org.BouncyCastle.Crypto.Engines { public class DesEngine : IBlockCipher { public virtual string AlgorithmName { get; } public virtual int[] GetWorkingKey(); public virtual void Init(bool forEncryption, ICipherParameters parameters); public virtual int GetBlockSize(); public virtual int ProcessBlock(byte[] input, int inOff, byte[] output, int outOff); protected static int[] GenerateWorkingKey(bool encrypting, byte[] key); public DesEngine(); } }