C++ (Cpp) PK_Encryptor_EME Beispiele

Beispiel #1

Datei: BotanRSA.cpp Projekt: bluelikeme/SoftHSMv2

// Encryption functions
bool BotanRSA::encrypt(PublicKey* publicKey, const ByteString& data,
		       ByteString& encryptedData, const AsymMech::Type padding)
{
	// Check if the public key is the right type
	if (!publicKey->isOfType(BotanRSAPublicKey::type))
	{
		ERROR_MSG("Invalid key type supplied");

		return false;
	}

	std::string eme;

	switch (padding)
	{
		case AsymMech::RSA_PKCS:
			eme = "PKCS1v15";
			break;
		case AsymMech::RSA_PKCS_OAEP:
			eme = "EME1(SHA-160)";
			break;
		case AsymMech::RSA:
			eme = "Raw";
			break;
		default:
			ERROR_MSG("Invalid padding mechanism supplied (%i)", padding);

			return false;
	}

	BotanRSAPublicKey* pk = (BotanRSAPublicKey*) publicKey;
	Botan::RSA_PublicKey* botanKey = pk->getBotanKey();

	if (!botanKey)
	{
		ERROR_MSG("Could not get the Botan public key");

		return false;
	}

	Botan::PK_Encryptor_EME* encryptor = NULL;
	try
	{
		encryptor = new Botan::PK_Encryptor_EME(*botanKey, eme);
	}
	catch (...)
	{
		ERROR_MSG("Could not create the encryptor token");

		return false;
	}

	// Perform the encryption operation
#if BOTAN_VERSION_MINOR == 11
	std::vector<Botan::byte> encResult;
#else
	Botan::SecureVector<Botan::byte> encResult;
#endif
	try
	{
		BotanRNG* rng = (BotanRNG*)BotanCryptoFactory::i()->getRNG();
		encResult = encryptor->encrypt(data.const_byte_str(), data.size(), *rng->getRNG());
	}
	catch (...)
	{
		ERROR_MSG("Could not encrypt the data");

		delete encryptor;

		return false;
	}

	// Return the result
	encryptedData.resize(encResult.size());
#if BOTAN_VERSION_MINOR == 11
	memcpy(&encryptedData[0], encResult.data(), encResult.size());
#else
	memcpy(&encryptedData[0], encResult.begin(), encResult.size());
#endif

	delete encryptor;

	return true;
}

Beispiel #2

Datei: BotanRSA.cpp Projekt: rene-post/SoftHSMv2

// Encryption functions
bool BotanRSA::encrypt(PublicKey* publicKey, const ByteString& data, ByteString& encryptedData, const std::string padding)
{
	// Check if the public key is the right type
	if (!publicKey->isOfType(BotanRSAPublicKey::type))
	{
		ERROR_MSG("Invalid key type supplied");

		return false;
	}

	std::string lowerPadding;
	lowerPadding.resize(padding.size());
	std::transform(padding.begin(), padding.end(), lowerPadding.begin(), tolower);
	std::string eme;

	if (!lowerPadding.compare("rsa-pkcs"))
	{
		eme = "PKCS1v15";
	}
	else if (!lowerPadding.compare("rsa-pkcs-oaep"))
	{
		eme = "EME1(SHA-160)";
	}
	else if (!lowerPadding.compare("rsa-raw"))
	{
		eme = "Raw";
	}
	else
	{
		ERROR_MSG("Invalid padding mechanism supplied (%s)", padding.c_str());

		return false;
	}

	BotanRSAPublicKey* pk = (BotanRSAPublicKey*) publicKey;
	Botan::RSA_PublicKey* botanKey = pk->getBotanKey();

	if (!botanKey)
	{
		ERROR_MSG("Could not get the Botan public key");

		return false;
	}

	Botan::PK_Encryptor_EME* encryptor = NULL;
	try
	{
		encryptor = new Botan::PK_Encryptor_EME(*botanKey, eme);
	}
	catch (...)
	{
		ERROR_MSG("Could not create the encryptor token");

		return false;
	}

	// Perform the encryption operation
	Botan::SecureVector<Botan::byte> encResult;
	try
	{
		BotanRNG* rng = (BotanRNG*)BotanCryptoFactory::i()->getRNG();
		encResult = encryptor->encrypt(data.const_byte_str(), data.size(), *rng->getRNG());
	}
	catch (...)
	{
		ERROR_MSG("Could not encrypt the data");

		delete encryptor;

		return false;
	}

	// Return the result
	encryptedData.resize(encResult.size());
	memcpy(&encryptedData[0], encResult.begin(), encResult.size());

	delete encryptor;

	return true;
}