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/*
* Copyright 2014 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 SYSTEM_KEYMASTER_AES_KEY_H_
#define SYSTEM_KEYMASTER_AES_KEY_H_
#include <openssl/aes.h>
#include "symmetric_key.h"
namespace keymaster {
class AesKeyFactory : public SymmetricKeyFactory {
public:
AesKeyFactory(const KeymasterContext* context) : SymmetricKeyFactory(context) {}
keymaster_algorithm_t registry_key() const { return KM_ALGORITHM_AES; }
keymaster_error_t LoadKey(const KeymasterKeyBlob& key_material,
const AuthorizationSet& hw_enforced,
const AuthorizationSet& sw_enforced, UniquePtr<Key>* key) override;
private:
bool key_size_supported(size_t key_size_bits) const override {
return key_size_bits == 128 || key_size_bits == 192 || key_size_bits == 256;
}
};
class AesKey : public SymmetricKey {
public:
AesKey(const KeymasterKeyBlob& key_material, const AuthorizationSet& hw_enforced,
const AuthorizationSet& sw_enforced, keymaster_error_t* error)
: SymmetricKey(key_material, hw_enforced, sw_enforced, error) {}
};
} // namespace keymaster
#endif // SYSTEM_KEYMASTER_AES_KEY_H_
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