C++ (Cpp) SecureVector::empty Examples

Example #1

File: BotanECDHPrivateKey.cpp Project: arpa2/SoftHSMv2-with-OpenPGP

// Decode from PKCS#8 BER
bool BotanECDHPrivateKey::PKCS8Decode(const ByteString& ber)
{
	Botan::DataSource_Memory source(ber.const_byte_str(), ber.size());
	if (source.end_of_data()) return false;
	Botan::SecureVector<Botan::byte> keydata;
	Botan::AlgorithmIdentifier alg_id;
	const Botan::OID oid("1.2.840.10045.2.1");
	Botan::ECDH_PrivateKey* key = NULL;
	try
	{
		Botan::BER_Decoder(source)
		.start_cons(Botan::SEQUENCE)
			.decode_and_check<size_t>(0, "Unknown PKCS #8 version number")
			.decode(alg_id)
			.decode(keydata, Botan::OCTET_STRING)
			.discard_remaining()
		.end_cons();
		if (keydata.empty())
			throw Botan::Decoding_Error("PKCS #8 private key decoding failed");
		// Botan defines == but not != ?!
		if (!(alg_id.oid == oid))
		{
			ERROR_MSG("Decoded private key not ECDH");

			return false;
		}
		key = new Botan::ECDH_PrivateKey(alg_id, keydata);
		if (key == NULL) return false;

		setFromBotan(key);

		delete key;
	}
	catch (std::exception& e)
	{
		ERROR_MSG("Decode failed on %s", e.what());

		return false;
	}

	return true;
}

Example #2

File: BotanDSAPrivateKey.cpp Project: arpa2/SoftHSMv2-with-OpenPGP

// Decode from PKCS#8 BER
bool BotanDSAPrivateKey::PKCS8Decode(const ByteString& ber)
{
	Botan::DataSource_Memory source(ber.const_byte_str(), ber.size());
	if (source.end_of_data()) return false;
	Botan::SecureVector<Botan::byte> keydata;
	Botan::AlgorithmIdentifier alg_id;
	Botan::DSA_PrivateKey* key = NULL;
	try
	{

		Botan::BER_Decoder(source)
		.start_cons(Botan::SEQUENCE)
			.decode_and_check<size_t>(0, "Unknown PKCS #8 version number")
			.decode(alg_id)
			.decode(keydata, Botan::OCTET_STRING)
			.discard_remaining()
		.end_cons();
		if (keydata.empty())
			throw Botan::Decoding_Error("PKCS #8 private key decoding failed");
		if (Botan::OIDS::lookup(alg_id.oid).compare("DSA"))
		{
			ERROR_MSG("Decoded private key not DSA");

			return false;
		}
		BotanRNG* rng = (BotanRNG*)BotanCryptoFactory::i()->getRNG();
		key = new Botan::DSA_PrivateKey(alg_id, keydata, *rng->getRNG());
		if (key == NULL) return false;

		setFromBotan(key);

		delete key;
	}
	catch (std::exception& e)
	{
		ERROR_MSG("Decode failed on %s", e.what());

		return false;
	}

	return true;
}