1 /*
2  * Copyright (C) 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 TEL_AES_CRYPTO_UTILS_H
17 #define TEL_AES_CRYPTO_UTILS_H
18 
19 #include <string>
20 
21 #include "hks_api.h"
22 #include "hks_param.h"
23 #include "hks_type.h"
24 
25 namespace OHOS {
26 namespace Telephony {
27 class TelAesCryptoUtils {
28 public:
29     static std::string AesCryptoEncrypt(const std::string &srcData);
30     static std::string AesCryptoDecrypt(std::string &srcData);
31     static int SaveEncryptString(const std::string &key, int32_t id, const std::string &rawData);
32     static std::string ObtainDecryptString(const std::string &key, int32_t id, const std::string &defValue);
33 
34 private:
35     static int32_t InitParamSet(struct HksParamSet **paramSet, const struct HksParam *params, uint32_t paramCount);
36     static std::string AesCryptoEncryptInner(const struct HksBlob *keyAlias, struct HksParamSet *genParamSet,
37         struct HksParamSet *encryptParamSet, const std::string &srcData);
38     static std::string AesCryptoDecryptInner(const struct HksBlob *keyAlias,
39         struct HksParamSet *decryptGcmParamSet, std::string &srcData);
40     static int32_t AesCryptoLoopUpdate(const struct HksBlob *handle, const struct HksParamSet *paramSet,
41         const struct HksBlob *inData, struct HksBlob *outData);
42     static bool HexToDec(char hex, uint8_t &decodeValue);
43     static std::string DecToHexString(const uint8_t *data, size_t len);
44     static std::pair<uint8_t *, size_t> HexToDecString(const std::string &hexString);
45 };
46 } // namespace Telephony
47 } // namespace OHOS
48 #endif // TEL_AES_CRYPTO_UTILS_H