rsa.cpp

// g++ -lcryptopp rsa.cpp -o rsa

#include <iostream>
#include <string>

#include "cryptopp/rsa.h"
#include "cryptopp/osrng.h"
#include <cryptopp/files.h>

using namespace std;
using namespace CryptoPP;

int main(int argc, char** argv) {
    AutoSeededRandomPool rng;
    InvertibleRSAFunction params;
    params.GenerateRandomWithKeySize(rng, 2048);

    const Integer& n = params.GetModulus();
    const Integer& p = params.GetPrime1();
    const Integer& q = params.GetPrime2();
    const Integer& d = params.GetPrivateExponent();
    const Integer& e = params.GetPublicExponent();

    cout << " n: " << n << endl;
    cout << " p: " << p << endl;
    cout << " q: " << q << endl;
    cout << " d: " << d << endl;
    cout << " e: " << e << endl;

    RSA::PublicKey publicKey(params);
    FileSink pubsink("pubkey.der");
    publicKey.DEREncode(pubsink);

    RSA::PrivateKey privateKey(params);
    FileSink privsink("privkey.der");
    privateKey.DEREncode(privsink);
}