48 lines
1.8 KiB
C++
48 lines
1.8 KiB
C++
/*
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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_OCB_UTILS_H_
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#define SYSTEM_KEYMASTER_OCB_UTILS_H_
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#include "ae.h"
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#include <hardware/keymaster_defs.h>
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#include <keymaster/serializable.h>
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namespace keymaster {
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class AuthorizationSet;
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struct KeymasterKeyBlob;
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static const int OCB_NONCE_LENGTH = 12;
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static const int OCB_TAG_LENGTH = 16;
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keymaster_error_t OcbEncryptKey(const AuthorizationSet& hw_enforced,
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const AuthorizationSet& sw_enforced, const AuthorizationSet& hidden,
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const KeymasterKeyBlob& master_key,
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const KeymasterKeyBlob& plaintext, const Buffer& nonce,
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KeymasterKeyBlob* ciphertext, Buffer* tag);
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keymaster_error_t OcbDecryptKey(const AuthorizationSet& hw_enforced,
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const AuthorizationSet& sw_enforced, const AuthorizationSet& hidden,
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const KeymasterKeyBlob& master_key,
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const KeymasterKeyBlob& ciphertext, const Buffer& nonce,
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const Buffer& tag, KeymasterKeyBlob* plaintext);
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} // namespace keymaster
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#endif // SYSTEM_KEYMASTER_OCB_UTILS_H_
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