Create Key Matrix Playfair

Signed-off-by: Egon Nathan Bittencourt Araujo <enba14@inf.ufpr.br>

include/playfair.h

 #include <iostream>
+#include <string>
+#include <vector>
+#include <iterator>
 
+std::vector< std::vector<char> > createKM ( const std::string key);
+std::string playfair(std::string text , const std::string key );

playfair.cpp

 #include "include/playfair.h"
 
+
+#define _charbit(X) (1 << (X - 'a'))
+
+
+std::vector< std::vector<char> > createKM ( const std::string key){
+	std::vector< std::vector<char> > mKey(5, std::vector<char>(5));
+	std::string abc(key + "abcdefghijklmnopqrstuvxwyz");
+	int mask =0;
+	//mask with 32 bits for the 25 letter alfabet
+	int si=0;
+	for(int i=0; i<5;  ++i){
+		for(int j=0; j<5; ++j){
+			while( (_charbit(abc[si]) & mask)!=0 )
+				++si;
+			mask = mask | _charbit(abc[si]);
+
+			if (abc[si] == 'i' || abc[si] == 'j'){
+				mask = mask | (_charbit('j') | _charbit('i'));
+			}
+
+			mKey[i][j] = abc[si];
+		}
+	}
+	return mKey;
+}
+
+std::string playfair(std::string text, const std::string key){
+	std::vector< std::vector <char> > mKey(createKM(key));
+	for (int i=0; i<5; ++i){
+		for (int j=0; j<5; ++j){
+			std::cout << mKey[i][j] << ' ';
+		}
+		std::cout << std::endl;
+	}
+
+
+	//TODO:change
+	return text;
+}

playunfair.cpp

@@ -27,6 +27,6 @@ int main(int argc, char *argv[]){
 
 	std::cout << text.str() << std::endl;
 	//chamar play fair passando string e chave
-	//crip = playfair(text.str(), key);
+	crip = playfair(text.str(), key);
 	return 0;
 }