[DllImport(conEncrypt, SetLastError=true, CharSet=CharSet.Ansi), SuppressUnmanagedCodeSecurity]
internal static extern int EncryptOfDES_HD(byte[] Key, byte[] Source, int Blocks);
[DllImport(conConversion, SetLastError=true), SuppressUnmanagedCodeSecurity]
internal static extern int Conversion(ref int Command, IntPtr buffer, int nSizeOfParameter);