using System;

using System.Text;

using System.Security.Cryptography;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string username = "aa75a18c-57f1-4e8e-a0ee-7e1f66fcdf78";

        string password = "1ia7fzdj9v3zadf9";

        // string key = "10b1aecniwfvl6sa"; // PRO

        string key = "41f95wy0iwy1mja5"; // UAT

        string input = "{\"CustomerID\":\"10KA92TN8\",\"RefNumber\":\"STB1098581924\"}";

        //string encryptedText = TrippleDESEncrypt(key, input);

        //Console.WriteLine(encryptedText);

        string encryptedText = "iJRQ5ZpnY9p6gay1w9DbWoJnkV9kgss7hTvP3MAqmxmMpFaUsVqJ9GhQTr+cCHRhHg3V9+2nmiVS+RdQ4thLfZph43cucdM4mBIgtKeEtJ008nDlFjwd6n6GwVaGM+1puGguRWc8EdNONQ5CGDjMI/lpmOVPGyYcSkjTdrDVODOxtZcD51v6zXGCCBKOoePppLNlGfoVELoc6wDwblPlM/szet+LhEOd1wmp7NwaiB3w1soOKxAUo1fta8w49hgv";

        Console.WriteLine(TrippleDESDecrypt(key, encryptedText));

        /*

        var request = new Request() {

            Data = encryptedText,

            FunctionName = "ENotifyTokenInfo",

            RequestDateTime = "2020-06-08T02:00:01Z",

            RequestID = "5274f744-2974-4c41-b50d-2d60c9d56598"

        };

        Console.WriteLine(GetSignature(request));

        Console.WriteLine(GetBasicAuthen(username, password));

        */

    }

    public static string GetSignature(Request request)

    {

        var jsonString = JsonConvert.SerializeObject(request);

        StringBuilder hash = new StringBuilder();

        MD5CryptoServiceProvider md5provider = new MD5CryptoServiceProvider();

        byte[] bytes = md5provider.ComputeHash(new UTF8Encoding().GetBytes(jsonString));

​

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

        {

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

        }

        return hash.ToString().ToUpper();

    }

    public static string GetBasicAuthen(string username, string password)

    {

        return System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));

    }

    public static string TrippleDESEncrypt(string key, string input) 

    { 

        TripleDESCryptoServiceProvider cipher = new TripleDESCryptoServiceProvider(); 

        cipher.Key = Encoding.UTF8.GetBytes(key)  ; 

        cipher.Mode = CipherMode.ECB; 

        cipher.Padding = PaddingMode.PKCS7; 

        byte[] data = Encoding.ASCII.GetBytes(input); 

        return Convert.ToBase64String(cipher.CreateEncryptor().TransformFinalBlock(data, 0, data.Length)); 

    }

    public static string TrippleDESDecrypt(string key, string input) 

    { 

        byte[] myDecryptArray = Convert.FromBase64String(input);

        TripleDESCryptoServiceProvider cipher = new TripleDESCryptoServiceProvider(); 

        cipher.Key = Encoding.UTF8.GetBytes(key)  ; 

        cipher.Mode = CipherMode.ECB; 

        cipher.Padding = PaddingMode.PKCS7; 

        return UTF8Encoding.UTF8.GetString(cipher.CreateDecryptor().TransformFinalBlock(myDecryptArray, 0, myDecryptArray.Length));

    }

    public class Request

    {

        public string Data {get;set;}

        public string FunctionName {get;set;}

        public string RequestDateTime {get;set;}

        public string RequestID {get;set;}

    }

}