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path: root/src/manager/crypto/tz-backend/tz-context.h
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/*
 *  Copyright (c) 2017 - 2019 Samsung Electronics Co., Ltd All Rights Reserved
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License
 */
/*
 * @file       tz-context.h
 * @author     Lukasz Kostyra (l.kostyra@samsung.com)
 * @version    1.0
 */
#pragma once

#include <tee_client_api.h>
#include <ckm/ckm-raw-buffer.h>
#include <data-type.h>
#include <km_ta_defines.h>
#include <memory>
#include <tz-backend/obj.h>
#include <generic-backend/encryption-params.h>
#include <tz-backend/tz-serializer.h>

namespace CKM {
namespace Crypto {
namespace TZ {
namespace Internals {

class TrustZoneContext final
{
public:
	static TrustZoneContext& Instance();

	void generateIV(RawBuffer &iv);
	void generateSKey(tz_algo_type algo,
					uint32_t keySizeBits,
					RawBuffer &keyId);
	void generateSKeyPwd(tz_algo_type algo,
						const RawBuffer &pwd,
						const RawBuffer &iv,
						const uint32_t pwdKeySizeBits,
						RawBuffer &keyId,
						RawBuffer &pwdTag);
	void generateRSAKey(uint32_t keySizeBits,
					const RawBuffer &pubPwd,
					const RawBuffer &pubPwdIv,
					const RawBuffer &privPwd,
					const RawBuffer &privPwdIv,
					RawBuffer &pubKeyId,
					RawBuffer &pubKeyTag,
					RawBuffer &privKeyId,
					RawBuffer &privKeyTag);
	void generateDSAKey(uint32_t keySizeBits,
						const RawBuffer &prime,
						const RawBuffer &subprime,
						const RawBuffer &base,
						const RawBuffer &pubPwd,
						const RawBuffer &pubPwdIv,
						const RawBuffer &privPwd,
						const RawBuffer &privPwdIv,
						RawBuffer &pubKeyId,
						RawBuffer &pubKeyTag,
						RawBuffer &privKeyId,
						RawBuffer &privKeyTag);

	void importData(uint32_t dataType,
					const RawBuffer &data,
					const Crypto::EncryptionParams &encData,
					const RawBuffer &pwd,
					const RawBuffer &pwdIV,
					const uint32_t keySizeBits,
					const uint32_t powTagSizeBits,
					RawBuffer &keyId,
					RawBuffer &pwdTag);

	void executeCrypt(tz_command cmd,
					tz_algo_type algo,
					const RawBuffer &keyId,
					const Pwd &pwd,
					const RawBuffer &iv,
					const RawBuffer &data,
					RawBuffer &out);

	void executeEncryptAE(const RawBuffer &keyId,
						const Pwd &pwd,
						const RawBuffer &iv,
						int tagSizeBits,
						const RawBuffer &aad,
						const RawBuffer &data,
						RawBuffer &out,
						RawBuffer &tag);
	void executeDecryptAE(const RawBuffer &keyId,
						const Pwd &pwd,
						const RawBuffer &iv,
						int tagSizeBits,
						const RawBuffer &tag,
						const RawBuffer &aad,
						const RawBuffer &data,
						RawBuffer &out);

	void executeSign(tz_algo_type algo,
					tz_hash_type hash,
					const RawBuffer &keyId,
					const Pwd &pwd,
					const RawBuffer &message,
					RawBuffer &signature);
	int executeVerify(tz_algo_type algo,
					tz_hash_type hash,
					const RawBuffer &keyId,
					const Pwd &pwd,
					const RawBuffer &message,
					const RawBuffer &signature);

	void executeDestroy(const RawBuffer &keyId);

	void getData(const RawBuffer &dataId,
				 const Pwd &pwd,
				 RawBuffer &data);

	void destroyData(const RawBuffer &dataId);

private:
	TrustZoneContext();
	~TrustZoneContext();
	TrustZoneContext(const TrustZoneContext &other) = delete;
	TrustZoneContext(TrustZoneContext &&other) = delete;

	void Initialize();
	void Destroy();
	void Reload();

	void GetDataSize(const RawBuffer &dataId, uint32_t &dataSize);

	void Execute(tz_command commandID, TEEC_Operation* op);

	void GenerateAKey(tz_command commandID,
	                  TZSerializer &sIn,
	                  uint32_t keySizeBits,
	                  const RawBuffer &pubPwd,
	                  const RawBuffer &pubPwdIv,
	                  const RawBuffer &privPwd,
	                  const RawBuffer &privPwdIv,
	                  RawBuffer &pubKeyId,
	                  RawBuffer &pubKeyTag,
	                  RawBuffer &privKeyId,
	                  RawBuffer &privKeyTag);

	TEEC_Context m_Context;
	TEEC_Session m_Session;

	bool m_ContextInitialized;
	bool m_SessionInitialized;
};

} // namespace Internals
} // namespace TZ
} // namespace Crypto
} // namespace CKM