using System;

using System.Linq;

using System.Text;

public class Program

{

    public static void Main(string[] args)

            {

                string encKey = "C4838093BFF13845BB0D51F1BA02C557";

                string macKey = "7CCDE99C2B2208D1B26A5C3AB985A50E";

                string clientId = "34707786";

                string msisdn = "905335575190";

                string userId = "587";

                string bankICA = "1009";

                string reqRefNumber = "587";

​

               /* string msisdn = args[0];

                string userId = args[1];

                string bankICA = args[2];

                string reqRefNumber = args[1];*/

                string timeZone = GetTimezone();

                string datetime = DateTime.Now.ToString("yyyyMMddHHmmss");

                string msisdnValidated = "01"; // 00 -> not validated , 01 -> validated..

                string validationType = "00"; // 00 -> none, 01 -> otp , 02 -> mpin , 03 -> mpin&otp , 04 -> 3D Secure..

                string merchantType = "00"; // 00 -> macro_merchant_id ,  01 -> custom..

                string vposCurrencyCode = "TRY";

                string vposMerchantId = "";

                string VposMerchantTerminalId = "";

                string vposMerchantEmail = "";

                string vposTerminalUserId = "";

                string vposProvisionUserId = "";

                string vposProvisionPassword = "";

                string vposStoreKey = "";

                string vposPosnetId = "";

                string dataToEncrypt = "";

                dataToEncrypt += Constants.TAG_CLIENT_ID + clientId.Length.ToString("X2") + Ascii2Hex(clientId);

                Console.WriteLine(dataToEncrypt);

                dataToEncrypt += Constants.TAG_TIMEZONE + "01" + timeZone;

                dataToEncrypt += Constants.TAG_DATETIME + datetime.Length.ToString("X2") + Ascii2Hex(datetime);

                dataToEncrypt += Constants.TAG_MSISDN + msisdn.Length.ToString("X2") + Ascii2Hex(msisdn);

                dataToEncrypt += Constants.TAG_REQ_REF_NUMBER + reqRefNumber.Length.ToString("X2") +

                                 Ascii2Hex(reqRefNumber);

                dataToEncrypt += Constants.TAG_USER_ID + userId.Length.ToString("X2") + Ascii2Hex(userId);

                dataToEncrypt += Constants.TAG_CLIENT_VALIDATED_MSISDN + "01" + msisdnValidated;

                dataToEncrypt += Constants.TAG_VALIDATION_TYPE + "01" + validationType;

                dataToEncrypt += Constants.TAG_MERCHANT_TYPE + "01" + merchantType;

                dataToEncrypt += Constants.TAG_BANK_ICA + bankICA.Length.ToString("X2") + Ascii2Hex(bankICA);

                dataToEncrypt += Constants.TAG_VPOS_CURRENCY_CODE + vposCurrencyCode.Length.ToString("X2") +

                                 Ascii2Hex(vposCurrencyCode);

                dataToEncrypt += Constants.TAG_VPOS_MERCHANT_ID + vposMerchantId.Length.ToString("X2") +

                                 Ascii2Hex(vposMerchantId);

                dataToEncrypt += Constants.TAG_VPOS_MERCHANT_TERMINAL_ID +

                                 VposMerchantTerminalId.Length.ToString("X2") + Ascii2Hex(VposMerchantTerminalId);

                dataToEncrypt += Constants.TAG_VPOS_MERCHANT_EMAIL + vposMerchantEmail.Length.ToString("X2") +

                                 Ascii2Hex(vposMerchantEmail);

                dataToEncrypt += Constants.TAG_VPOS_TERMINAL_USER_ID + vposTerminalUserId.Length.ToString("X2") +

                                 Ascii2Hex(vposTerminalUserId);

                dataToEncrypt += Constants.TAG_VPOS_PROVISION_USER_ID + vposProvisionUserId.Length.ToString("X2") +

                                 Ascii2Hex(vposProvisionUserId);

                dataToEncrypt += Constants.TAG_VPOS_PROVISION_PASSWORD + vposProvisionPassword.Length.ToString("X2") +

                                 Ascii2Hex(vposProvisionPassword);

                dataToEncrypt += Constants.TAG_VPOS_STORE_KEY + vposStoreKey.Length.ToString("X2") +

                                 Ascii2Hex(vposStoreKey);

                dataToEncrypt += Constants.TAG_VPOS_POSNET_ID + vposPosnetId.Length.ToString("X2") +

                                 Ascii2Hex(vposPosnetId);

                if ((dataToEncrypt.Length % 32) != 0) {

                    dataToEncrypt += "8";

                    while (true) {

                        if ((dataToEncrypt.Length % 32) == 0)

                            break;

                        else

                            dataToEncrypt += "0";

                    }

                }

​

                string encryptedData = "";

                using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {

                    using (System.Security.Cryptography.AesManaged AES = new System.Security.Cryptography.AesManaged()

                    ) {

                        AES.KeySize = 128;

                        AES.BlockSize = 128;

                        AES.Key = StringToByteArray(encKey);

                        AES.IV = StringToByteArray("00000000000000000000000000000000");

                        AES.Padding = System.Security.Cryptography.PaddingMode.None;

                        AES.Mode = System.Security.Cryptography.CipherMode.CBC;

                        byte[] bytesToBeEncrypted = StringToByteArray(dataToEncrypt);

                        using (var cs = 

                               new System.Security.Cryptography.CryptoStream(ms, AES.CreateEncryptor(),

                            System.Security.Cryptography.CryptoStreamMode.Write)) {

                            cs.Write(bytesToBeEncrypted, 0, bytesToBeEncrypted.Length);

                            cs.Close();

                        }

​

                        encryptedData = ByteArrayToString(ms.ToArray());

                    }

                }

​

                System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();

                byte[] keyByte = encoding.GetBytes(macKey);

                string mac = "";

                using (System.Security.Cryptography.HMACSHA1 hmac = new System.Security.Cryptography.HMACSHA1(keyByte)

                ) {

                    mac = ByteToString(hmac.ComputeHash(encoding.GetBytes(encryptedData)));

                }

​

                string token = encryptedData + mac;

                Console.WriteLine(token);

            }

​

            private static string GetTimezone()

            {

                string timeZone = "";

                TimeSpan tmpTimeZone = TimeZoneInfo.Local.GetUtcOffset(DateTime.UtcNow);

                if (tmpTimeZone.Hours > 0) {

                    timeZone = "0";

                    timeZone += tmpTimeZone.Hours.ToString("X1");

                }

                else if (tmpTimeZone.Hours == 0) {

                    timeZone = "00";

                }

                else {

                    timeZone += "8";

                    timeZone += (tmpTimeZone.Hours * -1).ToString("X1");

                }

​

                return timeZone;

            }

​

            private static string ByteArrayToString(byte[] ba)

            {

                string hex = BitConverter.ToString(ba);

                return hex.Replace("-", "");

            }

​

            private static string ByteToString(byte[] buff)

            {

                string sbinary = "";

                for (int i = 0; i < buff.Length; i++) {

                    sbinary += buff[i].ToString("X2"); // hex format

                }

​

                return (sbinary);

            }

​

            private static byte[] StringToByteArray(string hex)

            {

                return Enumerable.Range(0, hex.Length)

                    .Where(x => x % 2 == 0)

                    .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))

                    .ToArray();

            }

​

            private static string Ascii2Hex(string ascii)

            {

                byte[] temp = Encoding.Default.GetBytes(ascii);

                var hexString = BitConverter.ToString(temp);

                Console.WriteLine(temp);

                Console.WriteLine(ascii);

                Console.WriteLine(hexString+"\n -----------");

                return hexString.Replace("-", "");

            }

​

            private class Constants

            {

                public const string TAG_CLIENT_ID = "FF01";

                public const string TAG_TIMEZONE = "FF02";

                public const string TAG_DATETIME = "FF03";

                public const string TAG_MSISDN = "FF04";

                public const string TAG_REQ_REF_NUMBER = "FF05";

                public const string TAG_USER_ID = "FF06";

                public const string TAG_CLIENT_VALIDATED_MSISDN = "FF07";

                public const string TAG_VALIDATION_TYPE = "FF08";

                public const string TAG_MERCHANT_TYPE = "FF09";

                public const string TAG_VPOS_CURRENCY_CODE = "FF0A";

                public const string TAG_VPOS_MERCHANT_ID = "FF0B";

                public const string TAG_VPOS_MERCHANT_TERMINAL_ID = "FF0C";

                public const string TAG_VPOS_MERCHANT_EMAIL = "FF0D";

                public const string TAG_VPOS_TERMINAL_USER_ID = "FF0E";

                public const string TAG_VPOS_PROVISION_USER_ID = "FF0F";

                public const string TAG_VPOS_PROVISION_PASSWORD = "FF10";

                public const string TAG_VPOS_STORE_KEY = "FF11";

                public const string TAG_VPOS_POSNET_ID = "FF12";

                public const string TAG_BANK_ICA = "FF13";

            }

}