README.md

Vigenere V1.1 (C++23)

This is a encryption and decrpytion library based on Vigenere algorithm. Just import it to use it

Import

You need Vigenere.cpp and also Vigenere.h in your folder

Vigenere.cpp includes Vigenere.h so you just need one import statement

Use case

All is inside a namepspace called Vigenere.cpp

Example:

#include "Vigenere.cpp"
#include <iostream>
#include <string>
#include <sstream>

int main(){
  std::istringstream analyzer  = std::istringstream("CRYPTOISSHORTFORCRYPTOGRAPHY");
  
  std::string key = "abcd";
  
  std::string result = Vigenere::cryptoStream(analyzer, key, Vigenere::MODE::ENCRYPT).str();
  
  // result = "CSASTPKVSIQUTGQUCSASTPIUAQJB"

  return 0;
}

ENUMs

Name	Values
MODE	ENCRYPT,DECRYPT
CASE	NORMAL,LOWER, UPPER
FLAGS	NONE,IGNORE_SPECIAL_CHAR

Main Function

name	returntype
cryptoStream	std::ostringstream

Parametername (of cryptoStream)	Type	optional
stream	std::istringstream &	false
key	std::string	false
modeIn	MODE	false
caseIn	CASE	true (default: CASE::NORMAL)
flagsIn	FLAGS	true (default: FLAGS::NONE)

Tests (with Catch2)

Windows

g++ -std=c++23 -I. ./testVigenere.cpp -o runTests; if ($?) { ./runTests }

Unix (Linux / MacOs)

g++ -std=c++23 -I. ./testVigenere.cpp -o runTests && ./runTests

Information about Vigenere algorithm

https://en.wikipedia.org/wiki/Vigenère_cipher