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45 lines
1.8 KiB
45 lines
1.8 KiB
/*
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* Copyright (C) 2020 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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#pragma once
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#include <stdint.h>
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#include <stddef.h>
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/**
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* This is a redefinition of KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE in
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* system/security/keystore/keystore_attestation_id.h and must be kept in sync.
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* There is a static assert in aaid.cpp to assure that they are in sync.
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* We redefine this here to avoid unnecessary build dependencies for
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* the rust bindgen target.
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*/
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constexpr const size_t KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE = 1024;
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extern "C" {
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/**
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* Fills the buffer at aaid with the attestation application id of the app uid.
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* The buffer must be exactly KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE bytes in size.
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* *aaid_size is set to the number of bytes written to aaid.
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*
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* @param uid the uid of the app to retrieve the aaid for.
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* @param aaid output buffer for the attestation id.
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* @param aaid_size must be set to the size of the output buffer, which must be exactly
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* KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE bytes in size, by the caller. On success
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* it is set to the number of bytes written.
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* @return OK on success.
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*/
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uint32_t aaid_keystore_attestation_id(uint32_t uid, uint8_t* aaid, size_t* aaid_size);
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}
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