CipherStream/Headers/Playfair.hpp

//Ciphers/Headers/Playfair.hpp
//Matthew Ellison
// Created: 4-25-18
//Modified: 4-25-18
//This file contains the declaration of the Playfair class
//It is designed to encrypt and decrypt strings using the Playfair cipher


#ifndef PLAYFAIR_HPP
#define PLAYFAIR_HPP

#include <string>


class Playfair{
private:
	static char REPLACED;	//The letter that will need to be replaced in the grid and any input string or keyword
	static char REPLACER;	//The letter that replaced REPLACED in any input string or keyword
	static char DOUBLED;	//The letter that will be placed between double letters in the input string if necessary or to make the string length even
	std::string inputString;
	std::string outputString;
	std::string keyword;
	char grid[5][5];
	void createGrid();
	bool checkGrid(const char letter) const;
	void searchGrid(char letter, int& row, int& col);
public:
	Playfair();
	~Playfair();
	void reset();
	std::string encode();
	std::string encode(std::string keyword, std::string input);
	std::string decode();
	std::string decode(std::string keyword, std::string input);
	void setKeyword(std::string key);
	std::string getKeyword() const;
	void setInputString(std::string input);
	std::string getInputString() const;
	std::string getOutputString() const;
	std::string getGrid() const;
	//Change static variables
	static char getReplaced();
	static void setReplaced(const char replaced);
	static char getReplacer();
	static void setReplacer(const char replacer);
	static char getDoubled();
	static void setDoubled(const char doubled);
};

#endif //PLAYFAIR_HPP