using System;

using System.Security.Cryptography;

using System.IO;

using System.Text;

public class Program

{

    public static void Main()

    {

        String str = "1578317340494_E10ADC3949BA59ABBE56E057F20F883E";

        String key = "1234567890ABCDEF";

        byte[] keybytes = HexStringToByteArray(key); 

        String iv = "ABCDEF1234567890";

        byte[] ivbytes = HexStringToByteArray(iv); 

        DESCryptoServiceProvider des = new DESCryptoServiceProvider();

        byte[] inputByteArray = Encoding.UTF8.GetBytes(str);

        des.Key = keybytes;// key

        des.IV = ivbytes;// Initialization vector

        MemoryStream ms = new MemoryStream();

        CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(),

        CryptoStreamMode.Write);

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

        cs.FlushFinalBlock();

        var rst = Convert.ToBase64String(ms.ToArray());

        Console.WriteLine(rst);

    }

    public static byte[] HexStringToByteArray(String hex)

        {

        int NumberChars = hex.Length;

        byte[] bytes = new byte[NumberChars / 2];

        for (int i = 0; i < NumberChars; i += 2) {

        bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);

        }

        return bytes;

        }

}