patbef-ServiceInside/Support/Login.cs

using Support.Crypto;
using Support.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Support
{
    public partial class Login : Form
    {
        private Appsettings Appsettings = null;
        private bool _LoginSuccess;

        public Login()
        {
            InitializeComponent();
            this.Appsettings = Models.Appsettings.Load();
        }

        public bool LoginSuccess 
        { 
            get
            {
                return this._LoginSuccess;
            }
        }

        private void btnLogin_Click(object sender, EventArgs e)
        {
            if(this.Appsettings != null && !string.IsNullOrEmpty(this.Appsettings.SupportPassword))
            {
                string key = txtPassword.Text;

                if(!string.IsNullOrEmpty(key))
                {
                    if(AES.Decrypt(this.Appsettings.SupportPassword, AES.GetKey(key)) == "Support_" + key)
                    {
                        this._LoginSuccess = true;
                        this.DialogResult = DialogResult.OK;
                    }
                    else
                    {
                        MessageBox.Show("Das Support-Passwort ist ungültig");
                    }
                }
                else
                {
                    MessageBox.Show("Bitte geben Sie das Support-Passwort ein");
                }
            }
            else
            {
                MessageBox.Show("Das Support-Passwort ist ungültig");
            }
        }

        private void Login_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter) 
            {
                btnLogin_Click(null, null);
            }
        }
    }
}