Foxtrot-OTP

This is a C++ class-based implementation of the one-time pad cryptographic method.

Small Disclaimer Before we begin:

This implementation is not necessarily cryptographically secure. While the one-time-pad method itself is secure, this implementation may not be (is probably not, in fact) commercially secure. This is because no secure memory management takes place - keys and plain-text are passed around as std::string and std::vector<int>, so may reside in memory after the termination of the application.

It is therefore not advisable to implement Foxtrot on a shared computer with the expectation of security.

Description:

The Foxtrot engine provides a Windows-specific key generation and encryption/decryption utility using the one-time-pad method. The engine itself is comprised of a single class Foxtrot containing all methods associated with the engine.

Key Generation

Foxtrot uses Windows' CryptGenRandom() to generate random pads for use as keys.

Installation:

Since Foxtrot is only a single header/source class, you can simply add Foxtrot.h and Foxtrot.cpp to your project directory and #include "Foxtrot.h" in your implementation file.

Usage Example:

Here's an example of how to use Foxtrot to generate a key, encrypt a message with it, then decrypt the same message:

#include <iostream>     //std::cout
#include "Foxtrot.h"    //Foxtrot engine

int main() {
    Foxtrot foxtrot;                                                    //Create an instance of the engine.

    NString key = foxtrot.generateKey(1000);                            //Generate a key 1000 characters long.
    std::cout << "Key: " << foxtrot.toString(key) << "\n";              //Print our key.

    std::string cipherText = foxtrot.encrypt("Hello World!", key);      //Encrypt "Hello World!" using our key.
    std::cout << "Cipher text: " << cipherText << "\n";                 //Print our cipher text.

    std::string plainText = foxtrot.decrypt(cipherText, key);           //Decrypt the cipher text using our key.
    std::cout << "Plain text: " << plainText << "\n";                   //Prints "Hello World!".

    return 0;
}