Windows C++ / XOR Operation

Author Thomas Roccia (fr0gger)
Platform Windows
Language C++
Technique XOR Operation

Description:

The original message is first converted to binary format using the string data type. The key is also converted to binary format using the same type. The XOR operation is then performed on the binary message using the binary key. The resulting ciphertext is then concatenated to a string and printed to the screen. This ciphertext can then be decrypted using the same key to access the original message.

Code

#include <iostream>
#include <string>

using namespace std;

int main()
{
  // Define the key to use for the XOR operation
  string key = "mysecretkey";

  // Define the original message to be encrypted
  string message = "Hello, world!";

  // Convert the key and message to binary format
  string binary_key = key;
  string binary_message = message;

  // Perform the XOR operation on the binary message using the binary key
  string ciphertext = "";
  for (int i = 0; i < binary_message.length(); i++)
  {
    ciphertext += binary_message[i] ^ binary_key[i % binary_key.length()];
  }

  // Print the resulting ciphertext
  cout << ciphertext << endl;

  return 0;
}
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Created

December 13, 2022

Last Revised

April 22, 2024