[gameprogrammer] XOR Problem

From: "Edilson Vasconcelos de Melo Junior" <dirso@xxxxxxxxxxxxxxxxxx>
To: <gameprogrammer@xxxxxxxxxxxxx>
Date: Sun, 6 May 2007 16:36:34 -0300

Hi,

 

I'm trying to XOR / OR to easily encrypt my configurations. I'm having a
simple problem, the algorithm is not working:

 

[code]

            Using namespace std;

 

      string XorUtility::XorStream(string Pass, string Text)

      {

            string Ciph;

            Ciph.clear();

            char code;

            code = (char)0;

            for (string::iterator i = Pass.begin(); i != Pass.end(); i++)

            {

                  code ^= *i;

            }

            for (string::iterator i = Text.begin(); i != Text.end(); i++)

            {

                  code ^= *i;

                  Ciph.push_back(code);

            }

            return Ciph;

      }

 

      string XorUtility::OrStream(string Pass, string Text)

      {

            string Ciph;

            Ciph.clear();

            char code;

            code = (char)0;

            char letter;

            for (string::iterator i = Pass.begin(); i != Pass.end(); i++)

            {

                  code ^= *i;

            }

            for (string::iterator i = Text.begin(); i != Text.end(); i++)

            {

                  letter = code | *i;

                  Ciph.push_back(letter);

                  code ^= letter;

            }

            return Ciph;

      }

[/code]

 

The test I use is:

[code]

      s = "Teste do Xor do Dirso";

      s2 = XorUtility::getInstance()->XorStream("OK", s);

      s3 = XorUtility::getInstance()->OrStream("OK", s2);

[/code]

 

The output I'm getting for "s3" is: s3 = "Tugrww3| 

  _____  

o{9}v2V}~{"

 

What did I do wrong?

 

Thanks,

Dirso.

Follow-Ups:

[gameprogrammer] Re: XOR Problem
From: Dave Slutzkin

[gameprogrammer] XOR Problem

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