Crypto++ SHA256

std::string password(const std::string& string)
{
    CryptoPP::SHA256 hash;
    std::string encodedString;

    CryptoPP::StringSource(string, true, new CryptoPP::HashFilter(
        hash, new CryptoPP::HexEncoder(
            new CryptoPP::StringSink(
                encodedString
            ), false
        )
    ));

    return encodedString;
}