blob: 6daf1d24f8b7a8ea41129d7373ee3d0287047eda [file] [log] [blame]
/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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.
*/
#ifndef ANDROID_VOLD_KEYSTORAGE_H
#define ANDROID_VOLD_KEYSTORAGE_H
#include <string>
namespace android {
namespace vold {
// Represents the information needed to decrypt a disk encryption key.
// If "token" is nonempty, it is passed in as a required Gatekeeper auth token.
// If "secret" is nonempty, it is appended to the application-specific
// binary needed to unlock.
class KeyAuthentication {
public:
KeyAuthentication(std::string t, std::string s): token {t}, secret {s} {};
const std::string token;
const std::string secret;
};
extern const KeyAuthentication kEmptyAuthentication;
// Create a directory at the named path, and store "key" in it,
// in such a way that it can only be retrieved via Keymaster and
// can be securely deleted.
// It's safe to move/rename the directory after creation.
bool storeKey(const std::string &dir, const KeyAuthentication &auth, const std::string &key);
// Retrieve the key from the named directory.
bool retrieveKey(const std::string &dir, const KeyAuthentication &auth, std::string *key);
// Securely destroy the key stored in the named directory and delete the directory.
bool destroyKey(const std::string &dir);
} // namespace vold
} // namespace android
#endif