Part-7: Point of Sale(POS) Convert Password to MD5 Hash string in ASP.NET | Encrypt password in ASP.NET MVC C#

6/7/2020 12:00:00 AM

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See previous article/video before starting this


  • Create a class name “AppHelper” inside “Helper” folder.
  • Paste below code inside the “AppHelper” class
        public static string GetMd5Hash(string input)
            MD5 md5Hash = MD5.Create();
            // Convert the input string to a byte array and compute the hash.
            byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));

            // Create a new Stringbuilder to collect the bytes
            // and create a string.
            StringBuilder sBuilder = new StringBuilder();

            // Loop through each byte of the hashed data 
            // and format each one as a hexadecimal string.
            for (int i = 0; i < data.Length; i++)

            // Return the hexadecimal string.
            return sBuilder.ToString();


  • Replace your previous “CheckLogin” method inside Home controller by below code
        public JsonResult CheckLogin(string username, string password)
            POS_TutorialEntities db = new POS_TutorialEntities();
            string md5StringPassword = AppHelper.GetMd5Hash(password);
            var dataItem = db.Users.Where(x => x.Username == username && x.Password == md5StringPassword).SingleOrDefault();
            bool isLogged = true;
            if (dataItem != null)
                Session["Username"] = dataItem.Username;
                Session["Role"] = dataItem.Role;
                isLogged = true;
                isLogged = false;
            return Json(isLogged, JsonRequestBehavior.AllowGet);
  • Run the project

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Reza Karim

Software Engineer

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