1 /*
2  * Copyright (c) 2024-2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_ANS_INCLUDE_AES_GCM_HELPER_H
17 #define BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_ANS_INCLUDE_AES_GCM_HELPER_H
18 #include <string>
19 
20 #include "errors.h"
21 #include "ans_inner_errors.h"
22 
23 namespace OHOS {
24 namespace Notification {
25 class AesGcmHelper final {
26 public:
27     static ErrCode Encrypt(const std::string &plainText, std::string &cipherText);
28     static ErrCode Decrypt(std::string &plainText, const std::string &cipherText);
29 
30 private:
31     static bool EncryptAesGcm(const std::string &plainText, std::string &cipherText, std::string &key);
32     static bool DecryptAesGcm(std::string &plainText, const std::string &cipherText, std::string &key);
33     static bool GenerateKey(std::string &key);
34     static std::string Byte2Hex(const std::string &bytes);
35     static std::string Hex2Byte(const std::string &hex);
36     static unsigned char HexChar2Byte(const char &hexCh);
37 };
38 }  // namespace OHOS::Notification
39 }  // namespace OHOS
40 #endif // BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_ANS_INCLUDE_AES_GCM_HELPER_H