C# LGAuth [Private]

[Chris]

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));
    }
}

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.

[Bman]

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

[Chris]

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

[Chris]

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.

[Chad]

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

[Chris]

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

What specifically is wrong?

[Chad]

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

[MattSmith]

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