using System;

using System.Data;

using System.Text;

using System.Globalization;

using System.Linq;

​

using System.IO;

using System.Security.Cryptography;

public class Program

{

    public static void Main()

    {

        //CEK QRCPMData

        //string QRCPMData ="hQVDUFYwMWF3TwegAAAGAiAgUAdxcmlzY3BtWgqTYAAJFDEIkyEPXyAKQUxESUxBIFJJWl8tAmlkX1ASYWxkaWxhcnBAeWFob28uY29tnyUCMhBjK590KDAwTERBMTM4MTQtNDExMjAyMklCMzRBSUwtMjkwMzA2NDMyNjIwLU4=";

        //Byte[] data = System.Convert.FromBase64String(QRCPMData);

        //StringBuilder sb = new StringBuilder();

        //foreach (byte elemnt in data)

        //{

        //  sb.Append(string.Format("{0:x2}", elemnt));

        //}

​

        //string QRHex = sb.ToString().ToUpper();

        //getQRTag(QRHex);

        //CEK SIGNATURE

        string signatureTrx = "86853468CD67DA84D42B8FF43BFBB55095E4F1484CF82A5C55F331CDFFFC2076";

        string trxPAN = "9360000917283257735"; 

        string trxCode = "000000";

        string trxAmount = "000005500000"; 

        string trxTime = "132458"; 

        string trxDate = "0622";

        string merchantType = "5814";

        string acquirerID = "93600009"; 

        string retrievalReferenceNumber = "RCA000000005";

        string terminalID = "ID00055POS08    "; 

        string merchantID = "614705261      "; 

        string issuerID = "93600009"; 

        string invoiceNumber = "B004129186B004129186";

        string signatureData = (trxPAN + trxCode + trxAmount + trxTime + trxDate + merchantType + acquirerID + retrievalReferenceNumber + terminalID + merchantID + issuerID + invoiceNumber);

        string signatureTrxCheck = signature(signatureData, acquirerID);

        if (signatureTrx.Equals(signatureTrxCheck)){

            Console.WriteLine("SAMA : " + signatureTrx + " + " + signatureTrxCheck);

        } else {

            Console.WriteLine("BEDA : " + signatureTrx + " + " + signatureTrxCheck);

        }

    }

    public static string signature(string signatureData, string acquirerID)

    {

        string signatureTrx = string.Empty;

        //c4fd5b46-23bd-4cd8-b635-607cc4a73cfd //Prod

        //<add key="Sig_Secret_Key" value="f7cb5c27-073d-4f7c-a4af-e9dd2befc356"/> //TQC

        //<add key="Sig_Secret_Key_SPE" value="c687f81a-a8c5-4e34-a724-df3d7a71ff36"/> //TQC

        string secretKey = "f7cb5c27-073d-4f7c-a4af-e9dd2befc356";

        string secretKeySPE = "c4fd5b46-23bd-4cd8-b635-607cc4a73cfd";

​

        if (acquirerID.Equals("93600009"))

        {

            signatureTrx = ComputeSha256Hash(signatureData + secretKeySPE);

            Console.WriteLine("signatureDataBNIxSPE : " + signatureData + secretKeySPE);

        }

        else

        {

            signatureTrx = ComputeSha256Hash(signatureData + secretKey);

            Console.WriteLine("signatureDataBNIxAJ : " + signatureData + secretKey);

        }

        Console.WriteLine("signatureTrxCheckBNI : " + signatureTrx.ToUpper());

​

        return signatureTrx.ToUpper();

    }

    public static string ComputeSha256Hash(string text)

    {

        using (SHA256 sha256Hash = SHA256.Create())

        {

            byte[] bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(text));

​

            StringBuilder builder = new StringBuilder();

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

            {

                builder.Append(bytes[i].ToString("x2"));

            }

            return builder.ToString();

        }

    }

    public static string getQRTag(string strHex)

        {

            try

            {

                int pos = 0;

                if (strHex.Substring(pos, 2).Equals("85"))

                {

                    int taglength = int.Parse(strHex.Substring(pos + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                    //jResponse["tag85"] = strHex.Substring(4, taglength);

                    Console.WriteLine("tag85 : " + strHex.Substring(4, taglength));

                    pos += 4 + taglength;

                    //Controller.Instance.GetLogger().Debug("jResponse  " + jResponse.ToString());

                }

                else

                {

                    //jResponse["Error"] = "Tag 85 Error";

                    Console.WriteLine("Tag 85 Error");

                }

                if (strHex.Substring(pos, 2).Equals("61"))

                {

                    int taglength=0;

                    string valTag61="";

                    if(strHex.Substring(pos + 2, 2).Equals("81")){

                        taglength = int.Parse(strHex.Substring(pos + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        valTag61 = strHex.Substring(pos + 6, taglength);

                    }

                    else{

                        taglength = int.Parse(strHex.Substring(pos + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        valTag61 = strHex.Substring(pos + 4, taglength);

                    }

                    //jResponse["tag61"] = valTag61;

                    Console.WriteLine("tag61 : " + valTag61);

                    //Controller.Instance.GetLogger().Debug("jResponse  " + jResponse.ToString());

                    int pos1 = 0;

                    if(valTag61.Substring(pos1,2).Equals("4F")){

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag4F"] = valTag61.Substring(pos1 + 4, taglength1);

                        Console.WriteLine("tag4F : " + valTag61.Substring(pos1 + 4, taglength1));

                        pos1 += 4 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 2).Equals("50"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag50"] = valTag61.Substring(pos1 + 4, taglength1);

                        Console.WriteLine("tag50 : " + valTag61.Substring(pos1 + 4, taglength1));

                        pos1 += 4 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 2).Equals("5A"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag5A"] = valTag61.Substring(pos1 + 4, taglength1);

                        Console.WriteLine("tag5A : " + valTag61.Substring(pos1 + 4, taglength1));

                        pos1 += 4 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 4).Equals("5F20"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag5F20"] = hex2str(valTag61.Substring(pos1 + 6, taglength1));

                        Console.WriteLine("tag5F20 : " + hex2str(valTag61.Substring(pos1 + 6, taglength1)));

                        pos1 += 6 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 4).Equals("5F2D"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag5F2D"] = valTag61.Substring(pos1 + 6, taglength1);

                        Console.WriteLine("tag5F2D : " + valTag61.Substring(pos1 + 6, taglength1));

                        pos1 += 6 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 4).Equals("5F50"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag5F50"] = hex2str(valTag61.Substring(pos1 + 6, taglength1));

                        Console.WriteLine("tag5F50 : " + hex2str(valTag61.Substring(pos1 + 6, taglength1)));

                        pos1 += 6 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 4).Equals("9F25"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        //jResponse["tag9F25"] = valTag61.Substring(pos1 + 6, taglength1);

                        Console.WriteLine("tag9F25 : " + valTag61.Substring(pos1 + 6, taglength1));

                        pos1 += 6 + taglength1;

                    }

                    if (valTag61.Substring(pos1, 2).Equals("63"))

                    {

                        int taglength1 = int.Parse(valTag61.Substring(pos1 + 2, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                        string valTag63 = valTag61.Substring(pos1 + 4, taglength1);

                        //jResponse["tag63"] = valTag63;

                        Console.WriteLine("tag63 : " + valTag63);

                        int pos2 = 0;

                        if (valTag63.Substring(pos2, 4).Equals("9F74"))

                        {

                            int taglength2 = int.Parse(valTag63.Substring(pos2 + 4, 2), System.Globalization.NumberStyles.HexNumber) * 2;

                            string hexTag9F74 = valTag63.Substring(pos2 + 6, taglength2);

                            //jResponse["tag9F74"] = hexTag9F74;

                            Console.WriteLine("tag9F74 : " + hexTag9F74);

                            string strTag9F74 = hex2str(hexTag9F74);

                            string valTag9F74 = getStr9F74(ReverseString(strTag9F74));

                            string[] split = valTag9F74.Split("-".ToCharArray());

                            //jResponse["bank"] = split[0];

                            Console.WriteLine("bank : " + split[0]);

                            //jResponse["timestamp"] = split[1];

                            Console.WriteLine("timestamp : " + split[1]);

                            //jResponse["accountNum"] = split[2];

                            Console.WriteLine("accountNum : " + split[2]);

                            string uname = split[3];

                            if (uname.Substring(0, 1).Equals("^"))

                            {

                                uname = uname.Substring(1, (uname.Length - 1));

                            }

                            //jResponse["usernme"] = uname;

                            Console.WriteLine("usernme : " + uname);

                        }

                    }

​

                }

            }

            catch (Exception ex)

            {

                            Console.WriteLine("Error : " + ex.Message);

                //jResponse["Error"] = ex.Message;

            }

            return "test";

        }

        private static string getStr9F74(string valTag9F74)

        {

            string str1 = valTag9F74.Substring(0, (valTag9F74.Length / 2));

            string str2 = valTag9F74.Substring((valTag9F74.Length / 2), (valTag9F74.Length / 2));

            string strHasil = "";

            for(int i = 0; i<str1.Length;i++){

                strHasil += str2[i];

                strHasil += str1[i];                

            }

            return strHasil;

        }

        private static string ReverseString(string s)

        {

            char[] arr = s.ToCharArray();

            Array.Reverse(arr);

            return new string(arr);

        }

        private static string hex2str(string strHex)

        {

            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < strHex.Length - 1; i += 2)

            {

                sb.Append((char)Int16.Parse(strHex.Substring(i, 2), NumberStyles.AllowHexSpecifier));

            }

            return sb.ToString();

        }

​

}