Encrypt and decrypt using AES key

This sample app demonstrates how to generate a AES key, encrypt and decrypt given data using this key.

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_AES)
        .setCryptoOperation(telux::sec::CryptoOperation::CRYPTO_OP_ENCRYPT |
                    telux::sec::CryptoOperation::CRYPTO_OP_DECRYPT)
        .setKeySize(128)
        .setBlockMode(telux::sec::BlockMode::BLOCK_MODE_CBC |
                    telux::sec::BlockMode::BLOCK_MODE_CTR)
        .setPadding(telux::sec::Padding::PADDING_PKCS7 |
                    telux::sec::Padding::PADDING_NONE)
        .setCallerNonce(true)
        .build();

4. Generate AES key using generateKey() API

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

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

5. Define data to be encrypted

std::vector<uint8_t> pt {'h', 'e', 'l', 'l', 'o'};

6. Specify initialization vector for encryption/decryption

std::vector<uint8_t> initVector((128/8), 0x01);

7. Define parameters using CryptoParamBuilder for encryption/decryption

cp = telux::sec::CryptoParamBuilder()
        .setAlgorithm(telux::sec::Algorithm::ALGORITHM_AES)
        .setBlockMode(telux::sec::BlockMode::BLOCK_MODE_CBC)
        .setPadding(telux::sec::Padding::PADDING_PKCS7)
        .setInitVector(initVector)
        .build();

8. Encrypt the required data using encryptData() API

std::vector<uint8_t> et;

ec = cryptMgr->encryptData(cp, kb, pt, et);
if (ec != telux::common::ErrorCode::SUCCESS) {
    std::cout << "Can't encrypt data, err: " <<
            static_cast<int>(ec) << std::endl;
    return -1;
}

9. Decrypt data using decryptData() API

std::vector<uint8_t> dt;

ec = cryptMgr->decryptData(cp, kb, et, dt);
if (ec != telux::common::ErrorCode::SUCCESS) {
    std::cout << "Can't decrypt data, err: " <<
            static_cast<int>(ec) << std::endl;
    return -1;
}