| /* |
| * Copyright (C) 2016 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 KEYSTORE_KEYSTORE_ATTESTATION_ID_H_ |
| #define KEYSTORE_KEYSTORE_ATTESTATION_ID_H_ |
| |
| #include <utils/Errors.h> |
| #include <vector> |
| |
| namespace android { |
| namespace security { |
| |
| constexpr size_t KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE = 1024; |
| |
| namespace keymaster { |
| |
| class KeyAttestationApplicationId; |
| |
| } // namespace keymaster |
| |
| template <typename T> class StatusOr { |
| public: |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| StatusOr(const status_t error) : _status(error), _value() {} |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| StatusOr(const T& value) : _status(NO_ERROR), _value(value) {} |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| StatusOr(T&& value) : _status(NO_ERROR), _value(value) {} |
| |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| operator const T&() const { return _value; } |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| operator T&() { return _value; } |
| // NOLINTNEXTLINE(google-explicit-constructor) |
| operator T &&() && { return std::move(_value); } |
| |
| bool isOk() const { return NO_ERROR == _status; } |
| |
| ::android::status_t status() const { return _status; } |
| |
| const T& value() const & { return _value; } |
| T& value() & { return _value; } |
| T&& value() && { return std::move(_value); } |
| |
| private: |
| ::android::status_t _status; |
| T _value; |
| }; |
| |
| /** |
| * Gathers the attestation id for the application determined by uid by querying the package manager |
| * As of this writing uids can be shared in android, which is why the asn.1 encoded attestation |
| * application id may contain more than one package info followed by a set of digests of the |
| * packages signing certificates. |
| * |
| * @returns the asn.1 encoded attestation application id or an error code. Check the result with |
| * .isOk() before accessing. |
| */ |
| StatusOr<std::vector<uint8_t>> gather_attestation_application_id(uid_t uid); |
| |
| /** |
| * Generates a DER-encoded vector containing information from KeyAttestationApplicationId. |
| * The size of the returned vector will not exceed KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE. |
| */ |
| |
| StatusOr<std::vector<uint8_t>> build_attestation_application_id( |
| const ::android::security::keymaster::KeyAttestationApplicationId& key_attestation_id); |
| |
| } // namespace security |
| } // namespace android |
| #endif // KEYSTORE_KEYSTORE_ATTESTATION_ID_H_ |