Export a RSA key

This sample app demonstrates how to generate a RSA key and export it given standard format.

1. Get a SecurityFactory instance

auto &secFact = telux::sec::SecurityFactory::getInstance();

2. Get a CryptoManager instance

std::shared_ptr<telux::sec::ICryptoManager> cryptMgr;

cryptMgr = secFact.getCryptoManager(ec);
if (!cryptMgr) {
    std::cout << "Can't allocate CryptoManager, err: " <<
            static_cast<int>(ec) << std::endl;
    return -1;
}

3. Define parameters using CryptoParamBuilder for the key

std::shared_ptr<telux::sec::ICryptoParam> cp;

cp = telux::sec::CryptoParamBuilder()
        .setAlgorithm(telux::sec::Algorithm::ALGORITHM_RSA)
        .setCryptoOperation(telux::sec::CryptoOperation::CRYPTO_OP_SIGN |
                    telux::sec::CryptoOperation::CRYPTO_OP_VERIFY)
        .setKeySize(2048)
        .setPublicExponent(65537)
        .setDigest(telux::sec::Digest::DIGEST_SHA_2_256 |
                telux::sec::Digest::DIGEST_SHA_2_512)
        .setPadding(telux::sec::Padding::PADDING_RSA_PSS |
                telux::sec::Padding::PADDING_RSA_PKCS1_1_5_SIGN)
        .build();

4. Generate RSA key using generateKey() API

telux::common::ErrorCode ec;
std::vector<uint8_t> kb;

ec = cryptMgr->generateKey(cp, kb);
if (ec != telux::common::ErrorCode::SUCCESS) {
    std::cout << "Can't generate RSA asym key, err: " <<
            static_cast<int>(ec) << std::endl;
    return -1;
}

5. Export key in given format in an array using exportKey() API

std::vector<uint8_t> keyData;

ec = cryptMgr->exportKey(telux::sec::KeyFormat::KEY_FORMAT_X509, kb, keyData);
if (ec != telux::common::ErrorCode::SUCCESS) {
    std::cout << "Can't export key, err: " <<
            static_cast<int>(ec) << std::endl;
    return -1;
}