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63 lines
2.1 KiB
63 lines
2.1 KiB
4 months ago
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// TODO(154013771): this is copied from vold and modified to remove un-needed
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// methods and use std::string instead of KeyBuffer. We should instead
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// create a library to support both.
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#pragma once
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#include <memory>
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#include <string>
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#include <utility>
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#include <android-base/macros.h>
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#include <keymint_support/authorization_set.h>
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#include <keymint_support/keymint_tags.h>
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#include <aidl/android/hardware/security/keymint/ErrorCode.h>
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#include <aidl/android/system/keystore2/IKeystoreService.h>
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#include <android/binder_manager.h>
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namespace android {
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namespace kernel {
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namespace ks2 = ::aidl::android::system::keystore2;
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namespace km = ::aidl::android::hardware::security::keymint;
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// Wrapper for keystore2 methods that vold uses.
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class Keymaster {
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public:
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Keymaster();
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// false if we failed to get a keystore2 security level.
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explicit operator bool() { return (bool)securityLevel; }
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// Generate a key using keystore2 from the given params.
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bool generateKey(const km::AuthorizationSet& inParams, std::string* key);
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// Exports a keystore2 key with STORAGE_KEY tag wrapped with a per-boot
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// ephemeral key
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bool exportKey(const std::string& kmKey, std::string* key);
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// Import a key into the keymint
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bool importKey(const km::AuthorizationSet& inParams, const std::string& key,
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std::string* outKeyBlob);
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private:
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std::shared_ptr<ks2::IKeystoreSecurityLevel> securityLevel;
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DISALLOW_COPY_AND_ASSIGN(Keymaster);
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};
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} // namespace kernel
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} // namespace android
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