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43 lines
1.7 KiB
43 lines
1.7 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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#include "aaid.hpp"
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#include <keystore/keystore_attestation_id.h>
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using android::security::gather_attestation_application_id;
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uint32_t aaid_keystore_attestation_id(uint32_t uid, uint8_t* aaid, size_t* aaid_size) {
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static_assert(sizeof(uint32_t) == sizeof(uid_t), "uid_t has unexpected size");
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static_assert(sizeof(uint32_t) == sizeof(android::status_t), "status_t has unexpected size");
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static_assert(KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE ==
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android::security::KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE,
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"KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE sizes don't match.");
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auto result = gather_attestation_application_id(uid);
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if (!result.isOk()) {
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return result.status();
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}
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if (result.value().size() > KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE) {
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return ::android::NO_MEMORY;
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}
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if (*aaid_size != KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE) {
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return ::android::BAD_VALUE;
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}
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std::copy(result.value().begin(), result.value().end(), aaid);
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*aaid_size = result.value().size();
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return ::android::OK;
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}
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