Security C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Security.Cryptography;
public class Util
{
    public static string Hash(string input)
    {
        return System.Text.Encoding.UTF8.GetString(MD5.Create().ComputeHash(System.Text.Encoding.UTF8.GetBytes(input)));
    }
}