Question

Help with this C++ Assignment!

Write a small program C++ program HelloWorld.cpp (20 lines of code) that uses Third-party C++ $LIB. The code for $LIB should reside outside of the repository so that your build-script must be designed to take as a parameter where you installed $LIB so that it can pick up the headers/object code.

Answer 1

I have employed crypto++ library which is a third party. In order to run this code, you have use spaceCrypto which is a crypto++ wrapper and then download the crytopp libraries and compile the cryptopp static library in the "cryptlib.dsp" project, and add the library in your project and insert it in the cryptopp. Kindly comment if you have any doubts.

Here is the code:

#include "cryptopp_wrapper.h"

int main()
{
    ...
    cout<<"Cheggster !"<<endl<<endl;
    SpaceCrypto::CryptBlowFish hello;
    hello.setPlainString("HelloWorld!");
    hello.setKey("HomeworkLibsecretkey!!");
    std::string crypt;
    crypt = hello.Encrypt();
    cout<<"Plain Text: HelloWorld!"<<endl;
    cout<<"Cypherext: "<<crypt<<endl;
    hello.reset();
    hello.setEncString(crypt);
    hello.setInputMode(SpaceCrypto::HEX);
    hello.setKey("HomeworkLibsecretkey!!");
    hello.setOutputMode(SpaceCrypto::NORMAL);
    cout<<"Decrypted Text: "<<hello.Decrypt()<<endl;
}