ClrPlus.Powershell.Core.Service.RestService.TryAuthenticate C# (CSharp) Method

        public static bool TryAuthenticate(IServiceBase authService, string userName, string password)
        {
            if (string.IsNullOrEmpty(userName) || string.IsNullOrEmpty(password)) {
                return false;
            }
            var user = GetUserRule(userName);

            if (user == null) {
                return false;
            }

            var storedPassword = user["password"].Value;

            if (storedPassword.Length == 32) {
                using(var hasher = MD5.Create()) {
                    // simplisting one-way salting of the password with the service-name.
                    // if service name changes, this invalidates the passwords.
                    var pwd = hasher.ComputeHash(Encoding.Unicode.GetBytes(_service._serviceName + password)).Aggregate(String.Empty, (current, b) => current + b.ToString("x2").ToUpper());
                    if(pwd == storedPassword) {
                        return true;
                    }
                }
            }

            if(storedPassword == password) {
                // matched against password unsalted.
                // user should change password asap.
                return true;
            }

            return false;
        }

 public override bool TryAuthenticate(IServiceBase authService, string userName, string password)
 {
     return(RestService.TryAuthenticate(authService, userName, password));
 }