1 /*
2  * Copyright (c) 2022 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 STORAGE_DAEMON_CRYPTO_FSCRYPT_KEY_V1_EXT_H
17 #define STORAGE_DAEMON_CRYPTO_FSCRYPT_KEY_V1_EXT_H
18 
19 #include <memory>
20 #include <string>
21 
22 namespace OHOS {
23 namespace StorageDaemon {
24 class FscryptKeyV1Ext {
25 public:
26     FscryptKeyV1Ext() = default;
27     ~FscryptKeyV1Ext() = default;
SetDir(const std::string & dir)28     void SetDir(const std::string &dir)
29     {
30         dir_ = dir;
31         userId_ = GetUserIdFromDir();
32         type_ = GetTypeFromDir();
33     }
34     bool ActiveKeyExt(uint32_t flag, uint8_t *iv, uint32_t size, uint32_t &elType);
35     bool ActiveDoubleKeyExt(uint32_t flag, uint8_t *iv, uint32_t size, uint32_t &elType);
36     bool InactiveKeyExt(uint32_t flag);
37     bool LockUserScreenExt(uint32_t flag, uint32_t &elType);
38     bool UnlockUserScreenExt(uint32_t flag, uint8_t *iv, uint32_t size);
39     bool AddClassE(bool &isNeedEncryptClassE, bool &isSupport, uint32_t status);
40     bool DeleteClassEPinCode(uint32_t userId);
41     bool ChangePinCodeClassE(uint32_t userId, bool &isFbeSupport);
42     bool ReadClassE(uint32_t status, std::unique_ptr<uint8_t[]> &classEBuffer, uint32_t length, bool &isFbeSupport);
43     bool WriteClassE(uint32_t status, uint8_t *classEBuffer, uint32_t length);
44     bool GenerateAppkey(uint32_t userId, uint32_t appUid, std::unique_ptr<uint8_t[]> &keyId, uint32_t size);
45     bool LockUeceExt(bool &isFbeSupport);
46 
47 private:
48     uint32_t GetUserIdFromDir();
49     uint32_t GetTypeFromDir();
50     uint32_t GetMappedUserId(uint32_t userId, uint32_t type);
51     uint32_t GetMappedDeUserId(uint32_t userId);
52 
53     std::string dir_;
54     uint32_t userId_ = 0;
55     uint32_t type_ = 0;
56 };
57 } // namespace StorageDaemon
58 } // namespace OHOS
59 
60 #endif // STORAGE_DAEMON_CRYPTO_FSCRYPT_KEY_V1_EXT_H