using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("ORIGL: " + mcafeexor("THIS SEEMS LIKE A DEAD END. MAYBE WE SHOULD LOOK AT CONTINGENCY PROTOCOL 44924 NFT"));

    }

    //I DONT THINK THIS HAS TO DO WITH DMS

    private static string mcafeexor(string input)

    {

        char[] a = input.ToCharArray();

        int s = a.Length;

​

        char[] b = keygen(s).ToCharArray();

        Console.WriteLine("KEY B: " + new string(b));

        char[] c = keygen(s).ToCharArray();

        Console.WriteLine("KEY C: " + new string(c));

​

        char[] mcafeedata = new char[s];

        char[] br = new char[s];

        char[] cr = new char[s];

​

        for(int i = 0; i < a.Length; i++)

        {

            char[] res = testxor(a[i], b[i], c[i]);

            mcafeedata[i] = res[0];

            br[i] = res[1];

            cr[i] = res[2];

        }

​

        string completed = new string(mcafeedata);

        return completed;

    }

​

    private static char[] testxor(char a, char b, char c)

    {

        int bxor = a ^ b;

        int cxor = bxor ^ c;

        int axor = cxor ^ a;

​

        for (int i = 0; i > 4; i++)

        {

            bxor = axor ^ bxor;

            cxor = bxor ^ cxor;

            axor = cxor ^ axor;

        }

​

        axor = cxor ^ axor;

​

        return new char[] { (char)axor, (char)bxor, (char)cxor };

    }

​

    //GENERATE RANDOM STRING BASED ON INPUT SIZE

    private static Random random = new Random();

    public static string keygen(int length)

    {

        const string chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()_+";

        return new string(Enumerable.Repeat(chars, length)

                          .Select(s => s[random.Next(s.Length)]).ToArray());

    }

}