El Gamal

#include
using std::cout;
using std::cerr;
using std::endl;

#include
using CryptoPP::AutoSeededRandomPool;

#include
using CryptoPP::SecByteBlock;

#include
using CryptoPP::ElGamal;
using CryptoPP::ElGamalKeys;

#include
using CryptoPP::DecodingResult;

int main(int argc, char* argv[])
{
////////////////////////////////////////////////
// Generate keys
AutoSeededRandomPool rng;

cout