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79 lines
2.8 KiB
79 lines
2.8 KiB
/*
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* Copyright 2014 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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#ifndef SYSTEM_KEYMASTER_KEY_H_
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#define SYSTEM_KEYMASTER_KEY_H_
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#include <assert.h>
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#include <hardware/keymaster_defs.h>
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#include <keymaster/UniquePtr.h>
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#include <keymaster/android_keymaster_utils.h>
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#include <keymaster/authorization_set.h>
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namespace keymaster {
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class KeyFactory;
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class Key {
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public:
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virtual ~Key() {}
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Key(const Key&) = delete;
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void operator=(const Key&) = delete;
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/**
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* Return a copy of raw key material, in the specified format.
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*/
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virtual keymaster_error_t formatted_key_material(keymaster_key_format_t format,
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UniquePtr<uint8_t[]>* material,
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size_t* size) const = 0;
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AuthProxy authorizations() const { return AuthProxy(hw_enforced_, sw_enforced_); }
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const AuthorizationSet& hw_enforced() const { return hw_enforced_; }
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const AuthorizationSet& sw_enforced() const { return sw_enforced_; }
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AuthorizationSet& hw_enforced() { return hw_enforced_; }
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AuthorizationSet& sw_enforced() { return sw_enforced_; }
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const KeymasterKeyBlob& key_material() const { return key_material_; }
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KeymasterKeyBlob& key_material() { return key_material_; }
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// Methods to move data out of the key. These could be overloads of the methods above, with ref
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// qualifiers, but naming them differently makes it harder to accidentally make a temporary copy
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// when we mean to move.
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AuthorizationSet&& hw_enforced_move() { return move(hw_enforced_); }
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AuthorizationSet&& sw_enforced_move() { return move(sw_enforced_); }
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KeymasterKeyBlob&& key_material_move() { return move(key_material_); }
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const KeyFactory* key_factory() const { return key_factory_; }
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const KeyFactory*& key_factory() { return key_factory_; }
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protected:
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Key(AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced,
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const KeyFactory* key_factory)
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: hw_enforced_(move(hw_enforced)), sw_enforced_(move(sw_enforced)),
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key_factory_(key_factory) {}
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protected:
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AuthorizationSet hw_enforced_;
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AuthorizationSet sw_enforced_;
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KeymasterKeyBlob key_material_;
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const KeyFactory* key_factory_;
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};
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} // namespace keymaster
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#endif // SYSTEM_KEYMASTER_KEY_H_
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