1 // Copyright 2015 The Android Open Source Project
2 //
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 #ifndef BUFFET_KEYSTORE_ENCRYPTOR_H_
16 #define BUFFET_KEYSTORE_ENCRYPTOR_H_
17 
18 #include "buffet/encryptor.h"
19 
20 #include <memory>
21 
22 #include <keystore/keystore_client.h>
23 
24 namespace buffet {
25 
26 // An Encryptor implementation backed by Brillo Keystore. This class is intended
27 // to be the default encryptor on platforms that support it. An implementation
28 // of Encryptor::CreateDefaultEncryptor is provided for this class.
29 class KeystoreEncryptor : public Encryptor {
30  public:
31   explicit KeystoreEncryptor(
32       std::unique_ptr<keystore::KeystoreClient> keystore);
33   ~KeystoreEncryptor() override = default;
34 
35   bool EncryptWithAuthentication(const std::string& plaintext,
36                                  std::string* ciphertext) override;
37   bool DecryptWithAuthentication(const std::string& ciphertext,
38                                  std::string* plaintext) override;
39 
40  private:
41   std::unique_ptr<keystore::KeystoreClient> keystore_;
42 };
43 
44 }  // namespace buffet
45 
46 #endif  // BUFFET_KEYSTORE_ENCRYPTOR_H_
47