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        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "SectorTrailerWrite_AKM2")]
        public static extern DL_STATUS SectorTrailerWrite_AKM2(byte addressing_mode,
                                        byte address,
                                        out byte new_key_A,
                                        byte block0_access_bits,
                                        byte block1_access_bits,
                                        byte block2_access_bits,
                                        byte sector_trailer_access_bits,
                                        byte sector_trailer_byte9,
                                        out byte new_key_B,
                                        byte auth_mode);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "SectorTrailerWrite_PK")]
        public static extern DL_STATUS SectorTrailerWrite_PK(byte addressing_mode,
                                        byte address,
                                        out byte new_key_A,
                                        byte block0_access_bits,
                                        byte block1_access_bits,
                                        byte block2_access_bits,
                                        byte sector_trailer_access_bits,
                                        byte sector_trailer_byte9,
                                        out byte new_key_B,
                                        byte auth_mode,
                                        out byte pk_key);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "LinearFormatCard")]
        public static extern DL_STATUS LinearFormatCard(out byte new_key_A,
                                                         byte blocks_access_bits,
                                                         byte sector_trailers_access_bits,
                                                         byte sector_trailers_byte9,
                                                         out byte new_key_B,
                                                         out byte sectors_formatted,
                                                         byte auth_mode,
                                                         byte key_index);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "LinearFormatCard_AKM1")]
        public static extern DL_STATUS LinearFormatCard_AKM1(out byte new_key_A,
                                                         byte blocks_access_bits,
                                                         byte sector_trailers_access_bits,
                                                         byte sector_trailers_byte9,
                                                         out byte new_key_B,
                                                         out byte sectors_formatted,
                                                         byte auth_mode);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "LinearFormatCard_AKM2")]
        public static extern DL_STATUS LinearFormatCard_AKM2(out byte new_key_A,
                                                         byte blocks_access_bits,
                                                         byte sector_trailers_access_bits,
                                                         byte sector_trailers_byte9,
                                                         out byte new_key_B,
                                                         out byte sectors_formatted,
                                                         byte auth_mode);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "LinearFormatCard_PK")]
        public static extern DL_STATUS LinearFormatCard_PK(out byte new_key_A,
                                                         byte blocks_access_bits,
                                                         byte sector_trailers_access_bits,
                                                         byte sector_trailers_byte9,
                                                         out byte new_key_B,
                                                         out byte sectors_formatted,
                                                         byte auth_mode,
                                                         out byte pk_key);

        //----------------------------------------------------------------------
        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "SetISO14443_4_Mode")]
        public static extern DL_STATUS SetISO14443_4_Mode();

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "s_block_deselect")]
        public static extern DL_STATUS s_block_deselect(byte timeout);
        //----------------------------------------------------------------------
        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppSelectByAid")]
        public static extern DL_STATUS JCAppSelectByAid([In] byte[] aid, byte aid_len, [Out] byte[] selection_response);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppPutPrivateKey")]
        public static extern DL_STATUS JCAppPutPrivateKey(byte key_type, byte key_index, 
                                                          [In] byte[] key, UInt16 key_bit_len, 
                                                          [In] byte[] key_param, UInt16 key_parm_len);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGenerateKeyPair")]
        public static extern DL_STATUS JCAppGenerateKeyPair(byte key_type, byte key_index, byte key_designator, 
                                                            UInt16 key_bit_len, [In] byte[] param, UInt16 param_size);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppDeleteRsaKeyPair")]
        public static extern DL_STATUS JCAppDeleteRsaKeyPair(byte key_index);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppDeleteEcKeyPair")]
        public static extern DL_STATUS JCAppDeleteEcKeyPair(byte key_index);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppSignatureBegin")]
        public static extern DL_STATUS JCAppSignatureBegin(byte cipher, byte digest, byte padding, byte key_index,
                                                           [In] byte[] chunk, UInt16 chunk_len,
                                                           [In] byte[] alg_param, UInt16 alg_parm_len);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppSignatureUpdate")]
        public static extern DL_STATUS JCAppSignatureUpdate([In] byte[] chunk, UInt16 chunk_len);
        
        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppSignatureEnd")]
        private static extern DL_STATUS JCAppSignatureEnd(out UInt16 sig_len);
        public static DL_STATUS JCAppSignatureEnd(out byte[] sig)
        {
            DL_STATUS status;
            UInt16 sig_len;

            status = JCAppSignatureEnd(out sig_len);
            if (status != DL_STATUS.UFR_OK)
            {
                sig = null;
                return status;
            }

            sig = new byte[sig_len];
            return JCAppGetSignature(sig, sig_len);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGenerateSignature")]
        private static extern DL_STATUS JCAppGenerateSignature(byte cipher, byte digest, byte padding, byte key_index,
                                                                [In] byte[] plain_data, UInt16 plain_data_len,
                                                                out UInt16 sig_len,
                                                                [In] byte[] alg_param, UInt16 alg_parm_len);
        public static DL_STATUS JCAppGenerateSignature(byte cipher, byte digest, byte padding, byte key_index,
                                                       [In] byte[] plain_data, UInt16 plain_data_len,
                                                       out byte[] sig,
                                                       [In] byte[] alg_param, UInt16 alg_parm_len)
        {
            DL_STATUS status;
            UInt16 sig_len;

            status = JCAppGenerateSignature(cipher, digest, padding, key_index, plain_data, plain_data_len, out sig_len, alg_param, alg_parm_len);
            if (status != DL_STATUS.UFR_OK)
            {
                sig = null;
                return status;
            }

            sig = new byte[sig_len];
            return JCAppGetSignature(sig, sig_len);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetSignature")]
        private static extern DL_STATUS JCAppGetSignature([Out] byte[] sig, UInt16 sig_len);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppPutObj")]
        public static extern DL_STATUS JCAppPutObj(byte obj_type, byte obj_index, [In] byte[] obj, UInt16 obj_size, [In] byte[] id, byte id_size);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppPutObjSubject")]
        public static extern DL_STATUS JCAppPutObjSubject(byte obj_type, byte obj_index, [In] byte[] subject, byte size);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppInvalidateCert")]
        public static extern DL_STATUS JCAppInvalidateCert(byte obj_type, byte obj_index);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetObjId")]
        private static extern DL_STATUS JCAppGetObjId(byte obj_type, byte obj_index, [Out] byte[] id, out UInt16 id_size);
        public static DL_STATUS JCAppGetObjId(byte obj_type, byte obj_index, out byte[] id, out UInt16 size)
        {
            DL_STATUS status;

            size = 0;
            id = null;
            status = JCAppGetObjId(obj_type, obj_index, id, out size);
            if (status == DL_STATUS.UFR_OK)
            {
                id = new byte[size];
                status = JCAppGetObjId(obj_type, obj_index, id, out size);
            }
            return status;
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetObjSubject")]
        private static extern DL_STATUS JCAppGetObjSubject(byte obj_type, byte obj_index, [Out] byte[] subject, out byte subject_size);
        public static DL_STATUS JCAppGetObjSubject(byte obj_type, byte obj_index, out byte[] subject, out byte size)
        {
            DL_STATUS status;

            size = 0;
            subject = null;
            status = JCAppGetObjSubject(obj_type, obj_index, subject, out size);
            if (status == DL_STATUS.UFR_OK)
            {
                subject = new byte[size];
                status = JCAppGetObjSubject(obj_type, obj_index, subject, out size);
            }
            return status;
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetObj")]
        private static extern DL_STATUS JCAppGetObj(byte obj_type, byte obj_index, [Out] byte[] obj, UInt16 size);
        public static DL_STATUS JCAppGetObj(byte obj_type, byte obj_index, byte[] obj)
        {
            return JCAppGetObj(obj_type, obj_index, obj, (UInt16) obj.Length);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetErrorDescription")]
        private static extern IntPtr GetErrorDescription(UInt32 apdu_error_status);
        public static string JCAppGetErrorDescription(UInt32 apdu_error_status)
        {
            IntPtr str_ret = GetErrorDescription(apdu_error_status);
            return Marshal.PtrToStringAnsi(str_ret);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppLogin")]
        public static extern DL_STATUS JCAppLogin(byte SO, [In] byte[] pin, byte pinSize);
        public static DL_STATUS JCAppLogin(bool SO, string pin)
        {
            if (pin.Length > byte.MaxValue)
                return DL_STATUS.UFR_PARAMETERS_ERROR;

            byte[] pin_param = Encoding.ASCII.GetBytes(pin);
            return JCAppLogin(SO ? (byte)1 : (byte)0, pin_param, (byte)pin_param.Length);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetPinTriesRemaining")]
        public static extern DL_STATUS JCAppGetPinTriesRemaining(DL_SECURE_CODE secureCodeType, out UInt16 triesRemaining);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppPinChange")]
        public static extern DL_STATUS JCAppPinChange(DL_SECURE_CODE secureCodeType, [In] byte[] newPin, byte newPinSize);
        public static DL_STATUS JCAppPinChange(DL_SECURE_CODE secureCodeType, string newPin)
        {
            if (newPin.Length > byte.MaxValue)
                return DL_STATUS.UFR_PARAMETERS_ERROR;

            byte[] newPin_param = Encoding.ASCII.GetBytes(newPin);
            return JCAppPinChange(secureCodeType, newPin_param, (byte)newPin_param.Length);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppPinUnblock")]
        public static extern DL_STATUS JCAppPinUnblock(byte SO, [In] byte[] puk, byte pukSize);
        public static DL_STATUS JCAppPinUnblock(bool SO, string puk)
        {
            if (puk.Length > byte.MaxValue)
                return DL_STATUS.UFR_PARAMETERS_ERROR;

            byte[] puk_param = Encoding.ASCII.GetBytes(puk);
            return JCAppPinUnblock(SO ? (byte)1 : (byte)0, puk_param, (byte)puk_param.Length);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetRsaPublicKey")]
        private static extern DL_STATUS JCAppGetRsaPublicKey(byte key_index, [Out] byte[] modulus, out UInt16 modulus_size, 
                [Out] byte[] exponent, out UInt16 exponent_size);
        public static DL_STATUS JCAppGetRsaPublicKey(byte key_index, out byte[] modulus, out byte[] exponent)
        {
            DL_STATUS status;

            UInt16 modulus_size = 0;
            UInt16 exponent_size = 0;
            modulus = null;
            exponent = null;
            status = JCAppGetRsaPublicKey(key_index, modulus, out modulus_size, exponent, out exponent_size);
            if (status == DL_STATUS.UFR_OK)
            {
                modulus = new byte[modulus_size];
                exponent = new byte[exponent_size];
                status = JCAppGetRsaPublicKey(key_index, modulus, out modulus_size, exponent, out exponent_size);
            }
            return status;
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetEcPublicKey")]
        private static extern DL_STATUS JCAppGetEcPublicKey(byte key_index, [Out] byte[] keyW, out UInt16 keyW_size,
                [Out] byte[] field, out UInt16 field_size, [Out] byte[] ab, out UInt16 ab_size, 
                [Out] byte[] g, out UInt16 g_size, [Out] byte[] r, out UInt16 r_size, out UInt16 k, out UInt16 key_size_bits, out UInt16 key_designator);
        public static DL_STATUS JCAppGetEcPublicKey(byte key_index, out byte[] keyW, out byte[] field, out byte[] a, out byte[] b, out byte[] g, out byte[] r,
                out UInt16 k, out UInt16 key_size_bits, out UInt16 key_designator)
        {
            DL_STATUS status;

            UInt16 keyW_size = 0;
            UInt16 field_size = 0;
            UInt16 ab_size = 0;
            UInt16 g_size = 0;
            UInt16 r_size = 0;
            byte[] ab = null;
            keyW = field = a = b = g = r = null;
            k = key_size_bits = key_designator = 0;
            status = JCAppGetEcPublicKey(key_index, keyW, out keyW_size, field, out field_size, ab, out ab_size, g, out g_size, 
                    r, out r_size, out k, out key_size_bits, out key_designator);
            if (status == DL_STATUS.UFR_OK)
            {
                keyW = new byte[keyW_size];
                field = new byte[field_size];
                ab = new byte[ab_size];
                g = new byte[g_size];
                r = new byte[r_size];
                status = JCAppGetEcPublicKey(key_index, keyW, out keyW_size, field, out field_size, ab, out ab_size, g, out g_size,
                        r, out r_size, out k, out key_size_bits, out key_designator);

                if (keyW_size != (UInt16)(((key_size_bits + 7) / 8) * 2 + 1))
                    return DL_STATUS.UFR_APDU_WRONG_KEY_SIZE;
                if ((field_size != (UInt16)((key_size_bits + 7) / 8)) && (field_size != 6) && (field_size != 2))
                    return DL_STATUS.UFR_APDU_WRONG_KEY_SIZE;
                if (ab_size != (UInt16)(((key_size_bits + 7) / 8) * 2))
                    return DL_STATUS.UFR_APDU_WRONG_KEY_SIZE;
                if (g_size != (UInt16)(((key_size_bits + 7) / 8) * 2 + 1))
                    return DL_STATUS.UFR_APDU_WRONG_KEY_SIZE;
                if ((r_size != (UInt16)((key_size_bits + 7) / 8)) && (r_size != (UInt16)(((key_size_bits + 7) / 8) + 1)))
                    return DL_STATUS.UFR_APDU_WRONG_KEY_SIZE;
                a = new byte[(key_size_bits + 7) / 8];
                b = new byte[(key_size_bits + 7) / 8];
                Array.Copy(ab, 0, a, 0, (key_size_bits + 7) / 8);
                Array.Copy(ab, (key_size_bits + 7) / 8, b, 0, (key_size_bits + 7) / 8);
            }
            return status;
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "UFR_Status2String")]
        private static extern IntPtr UFR_Status2String(DL_STATUS status);
        public static string status2str(DL_STATUS status)
        {
            IntPtr str_ret = UFR_Status2String(status);
            return Marshal.PtrToStringAnsi(str_ret);
        }

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto, EntryPoint = "JCAppGetEcKeySizeBits")]
        public static extern DL_STATUS JCAppGetEcKeySizeBits(byte key_index, out UInt16 key_size_bits, out UInt16 key_designator);
        //----------------------------------------------------------------------

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "UfrXrcLockOn")]
        public static extern DL_STATUS UfrXrcLockOn(UInt16 pulse_duration);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "UfrXrcRelayState")]
        public static extern DL_STATUS UfrXrcRelayState(byte state);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "UfrXrcGetIoState")]
        public static extern DL_STATUS UfrXrcGetIoState(out byte intercom, out byte dig_in, out byte relay_state);
        
        //----------------------------------------------------------------------

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "ReaderOpenM")]
        public static extern DL_STATUS ReaderOpenM(UFR_HANDLE hndUFR);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "ReaderCloseM")]
        public static extern DL_STATUS ReaderCloseM(UFR_HANDLE hndUFR);

        //----------------------------------------------------------------------
        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "GetCardIdExM")]
        public static extern DL_STATUS GetCardIdExM(UFR_HANDLE hndUFR,
                                                    out byte bCardType,
                                                    [Out] byte nfc_uid, // NFC_UID_MAX_LEN = 10
                                                    out byte bUidSize);

        //[DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "GetReaderTypeM")]
        //public static extern DL_STATUS GetReaderTypeM(UInt32* get_reader_type);

        //----------------------------------------------------------------------

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "BlockRead_PKM")]
        public static extern DL_STATUS BlockRead_PKM(UFR_HANDLE hndUFR,
                                                  out byte data,
                                                  byte block_address,
                                                  byte auth_mode,
                                                  ref byte key);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "BlockWrite_PKM")]
        public static extern DL_STATUS BlockWrite_PKM(UFR_HANDLE hndUFR,
                                                    out byte data,
                                                    byte block_address,
                                                    byte auth_mode,
                                                    ref byte key);

        //----------------------------------------------------------------------

        //Desfire
        //----------------------------------------------------------------------

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireWriteAesKey")]
        public static extern DL_STATUS uFR_int_DesfireWriteAesKey(byte aes_key_no,
                                                                  [In] byte[] aes_key);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_GetDesfireUid")]
        public static extern DL_STATUS uFR_int_GetDesfireUid(byte aes_key_nr,
                                                             UInt32 aid,
                                                             byte aid_key_nr,
                                                             [Out] byte[] card_uid,
                                                             out byte card_uid_len,
                                                             out UInt16 card_status,
                                                             out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_GetDesfireUid_PK")]
        public static extern DL_STATUS uFR_int_GetDesfireUid_PK([In] byte[] aes_key_ext,
                                                                UInt32 aid,
                                                                byte aid_key_nr,
                                                                [Out] byte[] card_uid,
                                                                out byte card_uid_len,
                                                                out UInt16 card_status,
                                                                out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireFreeMem")]
        public static extern DL_STATUS uFR_int_DesfireFreeMem(out UInt32 free_mem_byte,
                                                              out UInt16 card_status,
                                                              out UInt16 exec_time);


        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireFormatCard")]
        public static extern DL_STATUS uFR_int_DesfireFormatCard(byte aes_key_nr, 
                                                                 out UInt16 card_status,
                                                                 out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireFormatCard_PK")]
        public static extern DL_STATUS uFR_int_DesfireFormatCard_PK([In] byte[] aes_key_ext,
                                                                    out UInt16 card_status,
                                                                    out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireSetConfiguration")]
        public static extern DL_STATUS uFR_int_DesfireSetConfiguration(byte aes_key_nr,
                                                                       byte random_uid,
                                                                       byte format_disable,
                                                                       out UInt16 card_status,
                                                                       out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireSetConfiguration_PK")]
        public static extern DL_STATUS uFR_int_DesfireSetConfiguration_PK([In] byte[] aes_key_ext,
                                                                          byte random_uid,
                                                                          byte format_disable,
                                                                          out UInt16 card_status,
                                                                          out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireGetKeySettings")]
        public static extern DL_STATUS uFR_int_DesfireGetKeySettings(byte aes_key_nr,
                                                                     UInt32 aid,
                                                                     out byte settings,
                                                                     out byte max_key_no, 
                                                                     out UInt16 card_status,
                                                                     out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireGetKeySettings_PK")]
        public static extern DL_STATUS uFR_int_DesfireGetKeySettings_PK([In] byte[] aes_key_ext,
                                                                        UInt32 aid,
                                                                        out byte settings,
                                                                        out byte max_key_no,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireChangeKeySettings")]
        public static extern DL_STATUS uFR_int_DesfireChangeKeySettings(byte aes_key_nr,
                                                                        UInt32 aid,
                                                                        byte settings,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireChangeKeySettings_PK")]
        public static extern DL_STATUS uFR_int_DesfireChangeKeySettings_PK([In] byte[] aes_key_ext,
                                                                           UInt32 aid,
                                                                           byte settings,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireChangeAesKey")]
        public static extern DL_STATUS uFR_int_DesfireChangeAesKey(byte aes_key_nr,
                                                                   UInt32 aid,
                                                                   byte aid_key_nr_auth,
                                                                   [In] byte[] new_aes_key,
                                                                   byte aid_key_no,
                                                                   [In] byte[] old_aes_key,
                                                                   out UInt16 card_status,
                                                                   out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireChangeAesKey_PK")]
        public static extern DL_STATUS uFR_int_DesfireChangeAesKey_PK([In] byte[] aes_key_ext,
                                                                      UInt32 aid,
                                                                      byte aid_key_nr_auth,
                                                                      [In] byte[] new_aes_key,
                                                                      byte aid_key_no,
                                                                      [In] byte[] old_aes_key,
                                                                      out UInt16 card_status,
                                                                      out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateAesApplication")]
        public static extern DL_STATUS uFR_int_DesfireCreateAesApplication(byte aes_key_nr,
                                                                           UInt32 aid_nr,
                                                                           byte setting,
                                                                           byte max_key_no,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateAesApplication_PK")]
        public static extern DL_STATUS uFR_int_DesfireCreateAesApplication_PK([In] byte[] aes_key_ext,
                                                                              UInt32 aid_nr,
                                                                              byte setting,
                                                                              byte max_key_no,
                                                                              out UInt16 card_status,
                                                                              out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateAesApplication_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireCreateAesApplication_no_auth(UInt32 aid_nr,
                                                                                   byte setting,
                                                                                   byte max_key_no,
                                                                                   out UInt16 card_status,
                                                                                   out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDeleteApplication")]
        public static extern DL_STATUS uFR_int_DesfireDeleteApplication(byte aes_key_nr,
                                                                        UInt32 aid_nr,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDeleteApplication_PK")]
        public static extern DL_STATUS uFR_int_DesfireDeleteApplication_PK([In] byte[] aes_key_ext,
                                                                           UInt32 aid_nr,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);


        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateStdDataFile")]
        public static extern DL_STATUS uFR_int_DesfireCreateStdDataFile(byte aes_key_nr,
                                                                        UInt32 aid,
                                                                        byte file_id,
                                                                        UInt32 file_size,
                                                                        byte read_key_no,
                                                                        byte write_key_no,
                                                                        byte read_write_key_no,
                                                                        byte change_key_no,
                                                                        byte communication_settings,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateStdDataFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireCreateStdDataFile_PK([In] byte[] aes_key_ext,
                                                                           UInt32 aid,
                                                                           byte file_id,
                                                                           UInt32 file_size,
                                                                           byte read_key_no,
                                                                           byte write_key_no,
                                                                           byte read_write_key_no,
                                                                           byte change_key_no,
                                                                           byte communication_settings,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateStdDataFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireCreateStdDataFile_no_auth(UInt32 aid,
                                                                                byte file_id,
                                                                                UInt32 file_size,
                                                                                byte read_key_no,
                                                                                byte write_key_no,
                                                                                byte read_write_key_no,
                                                                                byte change_key_no,
                                                                                byte communication_settings,
                                                                                out UInt16 card_status,
                                                                                out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDeleteFile")]
        public static extern DL_STATUS uFR_int_DesfireDeleteFile(byte aes_key_nr,
                                                                 UInt32 aid,
                                                                 byte file_id,
                                                                 out UInt16 card_status,
                                                                 out UInt16 exec_time);


        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDeleteFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireDeleteFile_PK([In] byte[] aes_key_ext,
                                                                    UInt32 aid,
                                                                    byte file_id,
                                                                    out UInt16 card_status,
                                                                    out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDeleteFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireDeleteFile_no_auth(UInt32 aid,
                                                                         byte file_id,
                                                                         out UInt16 card_status,
                                                                         out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadStdDataFile")]
        public static extern DL_STATUS uFR_int_DesfireReadStdDataFile(byte aes_key_nr,
                                                                      UInt32 aid,
                                                                      byte aid_key_nr,
                                                                      byte file_id,
                                                                      UInt16 offset,
                                                                      UInt16 data_length,
                                                                      byte communication_settings,
                                                                      [Out] byte[] data,
                                                                      out UInt16 card_status,
                                                                      out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadStdDataFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireReadStdDataFile_PK([In] byte[] aes_key_ext,
                                                                         UInt32 aid,
                                                                         byte aid_key_nr,
                                                                         byte file_id,
                                                                         UInt16 offset,
                                                                         UInt16 data_length,
                                                                         byte communication_settings,
                                                                         [Out] byte[] data,
                                                                         out UInt16 card_status,
                                                                         out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadStdDataFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireReadStdDataFile_no_auth(UInt32 aid,
                                                                              byte aid_key_nr,
                                                                              byte file_id,
                                                                              UInt16 offset,
                                                                              UInt16 data_length,
                                                                              byte communication_settings,
                                                                              [Out] byte[] data,
                                                                              out UInt16 card_status,
                                                                              out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireWriteStdDataFile")]
        public static extern DL_STATUS uFR_int_DesfireWriteStdDataFile(byte aes_key_nr,
                                                                       UInt32 aid,
                                                                       byte aid_key_nr,
                                                                       byte file_id,
                                                                       UInt16 offset,
                                                                       UInt16 data_length,
                                                                       byte communication_settings,
                                                                       [In] byte[] data,
                                                                       out UInt16 card_status,
                                                                       out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireWriteStdDataFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireWriteStdDataFile_PK([In] byte[] aes_key_ext,
                                                                          UInt32 aid,
                                                                          byte aid_key_nr,
                                                                          byte file_id,
                                                                          UInt16 offset,
                                                                          UInt16 data_length,
                                                                          byte communication_settings,
                                                                          [In] byte[] data,
                                                                          out UInt16 card_status,
                                                                          out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireWriteStdDataFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireWriteStdDataFile_no_auth(UInt32 aid,
                                                                          byte aid_key_nr,
                                                                          byte file_id,
                                                                          UInt16 offset,
                                                                          UInt16 data_length,
                                                                          byte communication_settings,
                                                                          [In] byte[] data,
                                                                          out UInt16 card_status,
                                                                          out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "DES_to_AES_key_type")]
        public static extern DL_STATUS DES_to_AES_key_type();

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "AES_to_DES_key_type")]
        public static extern DL_STATUS AES_to_DES_key_type();

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "SetSpeedPermanently")]
        public static extern DL_STATUS SetSpeedPermanently(byte tx_speed, byte rx_speed);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "GetSpeedParameters")]
        public static extern DL_STATUS GetSpeedParameters(out byte tx_speed, out byte rx_speed);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateValueFile")]
        public static extern DL_STATUS uFR_int_DesfireCreateValueFile(byte aes_key_nr,
                                                                      UInt32 aid,
                                                                      byte file_id,
                                                                      Int32 lower_limit,
                                                                      Int32 upper_limit,
                                                                      Int32 value,
                                                                      byte limited_credit_enabled,
                                                                      byte read_key_no,
                                                                      byte write_key_no,
                                                                      byte read_write_key_no,
                                                                      byte change_key_no,
                                                                      byte communication_settings,
                                                                      out UInt16 card_status,
                                                                      out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateValueFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireCreateValueFile_PK([In] byte[] aes_key_ext,
                                                                         UInt32 aid,
                                                                         byte file_id,
                                                                         Int32 lower_limit,
                                                                         Int32 upper_limit,
                                                                         Int32 value,
                                                                         byte limited_credit_enabled,
                                                                         byte read_key_no,
                                                                         byte write_key_no,
                                                                         byte read_write_key_no,
                                                                         byte change_key_no,
                                                                         byte communication_settings,
                                                                         out UInt16 card_status,
                                                                         out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireCreateValueFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireCreateValueFile_no_auth(UInt32 aid,
                                                                              byte file_id,
                                                                              Int32 lower_limit,
                                                                              Int32 upper_limit,
                                                                              Int32 value,
                                                                              byte limited_credit_enabled,
                                                                              byte read_key_no,
                                                                              byte write_key_no,
                                                                              byte read_write_key_no,
                                                                              byte change_key_no,
                                                                              byte communication_settings,
                                                                              out UInt16 card_status,
                                                                              out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadValueFile")]
        public static extern DL_STATUS uFR_int_DesfireReadValueFile(byte aes_key_nr,
                                                                    UInt32 aid,
                                                                    byte aid_key_nr,
                                                                    byte file_id,
                                                                    byte communication_settings,
                                                                    out Int32 value,
                                                                    out UInt16 card_status,
                                                                    out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadValueFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireReadValueFile_PK([In] byte[] aes_key_ext,
                                                                       UInt32 aid,
                                                                       byte aid_key_nr,
                                                                       byte file_id,
                                                                       byte communication_settings,
                                                                       out Int32 value,
                                                                       out UInt16 card_status,
                                                                       out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireReadValueFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireReadValueFile_no_auth(UInt32 aid,
                                                                            byte aid_key_nr,
                                                                            byte file_id,
                                                                            byte communication_settings,
                                                                            out Int32 value,
                                                                            out UInt16 card_status,
                                                                            out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireIncreaseValueFile")]
        public static extern DL_STATUS uFR_int_DesfireIncreaseValueFile(byte aes_key_nr,
                                                                        UInt32 aid,
                                                                        byte aid_key_nr,
                                                                        byte file_id,
                                                                        byte communication_settings,
                                                                        Int32 value,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireIncreaseValueFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireIncreaseValueFile_PK([In] byte[] aes_key_ext,
                                                                           UInt32 aid,
                                                                           byte aid_key_nr,
                                                                           byte file_id,
                                                                           byte communication_settings,
                                                                           Int32 value,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireIncreaseValueFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireIncreaseValueFile_no_auth(UInt32 aid,
                                                                                byte aid_key_nr,
                                                                                byte file_id,
                                                                                byte communication_settings,
                                                                                Int32 value,
                                                                                out UInt16 card_status,
                                                                                out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDecreaseValueFile")]
        public static extern DL_STATUS uFR_int_DesfireDecreaseValueFile(byte aes_key_nr,
                                                                        UInt32 aid,
                                                                        byte aid_key_nr,
                                                                        byte file_id,
                                                                        byte communication_settings,
                                                                        Int32 value,
                                                                        out UInt16 card_status,
                                                                        out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDecreaseValueFile_PK")]
        public static extern DL_STATUS uFR_int_DesfireDecreaseValueFile_PK([In] byte[] aes_key_ext,
                                                                           UInt32 aid,
                                                                           byte aid_key_nr,
                                                                           byte file_id,
                                                                           byte communication_settings,
                                                                           Int32 value,
                                                                           out UInt16 card_status,
                                                                           out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "uFR_int_DesfireDecreaseValueFile_no_auth")]
        public static extern DL_STATUS uFR_int_DesfireDecreaseValueFile_no_auth(UInt32 aid,
                                                                                byte aid_key_nr,
                                                                                byte file_id,
                                                                                byte communication_settings,
                                                                                Int32 value,
                                                                                out UInt16 card_status,
                                                                                out UInt16 exec_time);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "ReaderKeysLock")]
        public static extern DL_STATUS ReaderKeysLock([In] char[] password);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "ReaderKeysUnlock")]
        public static extern DL_STATUS ReaderKeysUnlock([In] char[] password);

        [DllImport(DLL_NAME, CallingConvention = CallingConvention.StdCall, EntryPoint = "GetReaderDescription")]
        private static extern IntPtr GetReaderDescription();
        public static string GetDescription()
        {
            IntPtr str_ret = GetReaderDescription();
            return Marshal.PtrToStringAnsi(str_ret);
        }
    }
}
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