C# LGAuth [Private]

using System;

using System.Drawing;

using System.Net;

using System.IO;

using System.Windows.Forms;



static class LGAuth

{

    public static Boolean Auth(String Username, String Password, String Key)

    {

        HTTPWrapper Wrapper = new HTTPWrapper();

        String Gpc = Key.Substring(0, (int)Math.Round((Decimal)Key.Length / 2)) + (new Random((Int32)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).Next());

        Bitmap AuthImage = (Bitmap)Image.FromStream((Stream)Wrapper.get_stream("http://logicalgamers.com/auth/auth.php?user=" + Username + "&pass=" + Password + "&key=" + Key + "&gpc=" + Gpc));

        String Crypt = "";

        for (int y = 0; y < AuthImage.Width; y++)

        {

            for (int x = 0; x < AuthImage.Width; x++)

            {

                Crypt += ((Char)AuthImage.GetPixel(x, y).R).ToString();

            }

        }

        int SkipStart = Int32.Parse(Crypt.Substring(0, Crypt.IndexOf("/")));

        Crypt = Crypt.Substring((Crypt.IndexOf("/") + 1), Crypt.Length - (Crypt.IndexOf("/") + 1));

        String Decrypt = Decode(Crypt.Substring(0, SkipStart) + Crypt.Substring((SkipStart + 10), Crypt.IndexOf("&") - (SkipStart + 10)));

        String[] rawInfo = Decrypt.Split('/');

        String rawGpc = Crypt.Substring((Crypt.IndexOf("&") + 1), 16);

        if (rawInfo[0] == Username && rawInfo[1] == Key && rawInfo[2] == Password && Gpc.IndexOf(rawGpc) > -1)

        {

            return true;

        }

        return false;

    }



    private static String Decode(String Crypt)

    {

        return System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(Crypt));

    }

}[/2][/1][/0]

You need to use my HTTPWrappers, provided here, for this to function properly.

This method does NOT save the image on the user's computer, and rather parses it with a memory stream.

This method also fully decrypts Arti's encryption, meaning it will obtain the data properly and without unsafe operations.

Thanks chris, I'll be using this on my next big project.

I updated the auth, make sure to use it or it wont work <3

The auth was once again improved, I removed a small bit of data that was not needed. Also I fixed the image reading method because as Artificial stated to me, "If the user has a long username or password, it can loop down to the next row/y axis." So it not reads all of the pixels for text and properly checks the data.

There is a problem with this authorization. You can't use it with Console Applications.

Chad wrote:

There is a problem with this authorization. You can't use it with Console Applications.

What specifically is wrong?

Console applications do not support System.Drawing and some other thing.

Which will force you to use normal apps untill further notice.