mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
Janusz Sobczak
a92abac83a
1. Update the API to accept the credentials on input instead of credential manager. 2. Update the test with values using the LDT encryption. These changes allow us to have a more asynchronous implementaion. When broadcasting we can: 1. Fetch the private credentials asynchronously. 2. Create the advertisement and start broadcasting when the credentials have been fetched. When scanning we can: 1. Fetch public credentials asynchronously. 2. Start scanning for advertisements. 3. Update the decoder when new credentials are fetched. PiperOrigin-RevId: 493998041
126 lines
4.7 KiB
C++
126 lines
4.7 KiB
C++
// Copyright 2022 Google LLC
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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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// https://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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#ifndef THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_CREDENTIAL_MANAGER_IMPL_H_
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#define THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_CREDENTIAL_MANAGER_IMPL_H_
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/string_view.h"
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#include "internal/platform/credential_storage_impl.h"
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#include "internal/platform/implementation/credential_callbacks.h"
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#include "internal/proto/credential.pb.h"
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#include "presence/implementation/credential_manager.h"
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namespace nearby {
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namespace presence {
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class CredentialManagerImpl : public CredentialManager {
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public:
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CredentialManagerImpl() {
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credential_storage_ptr_ =
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std::make_unique<location::nearby::CredentialStorageImpl>();
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}
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// Test purpose only.
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explicit CredentialManagerImpl(
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std::unique_ptr<location::nearby::CredentialStorageImpl>
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credential_storage_ptr)
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: credential_storage_ptr_(std::move(credential_storage_ptr)) {}
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// AES only supports key sizes of 16, 24 or 32 bytes.
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static constexpr int kAuthenticityKeyByteSize = 16;
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// Length of key in bytes required by AES-GCM encryption.
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static constexpr size_t kNearbyPresenceNumBytesAesGcmKeySize = 32;
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// Modify this to 12 after use real AES.
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static constexpr int kAesGcmIVSize = 12;
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void GenerateCredentials(
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const nearby::internal::DeviceMetadata& device_metadata,
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absl::string_view manager_app_id,
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const std::vector<nearby::internal::IdentityType>& identity_types,
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int credential_life_cycle_days, int contiguous_copy_of_credentials,
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GenerateCredentialsCallback credentials_generated_cb) override;
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void UpdateRemotePublicCredentials(
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absl::string_view manager_app_id, absl::string_view account_name,
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const std::vector<nearby::internal::PublicCredential>&
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remote_public_creds,
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UpdateRemotePublicCredentialsCallback credentials_updated_cb) override;
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void GetPrivateCredentials(
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const CredentialSelector& credential_selector,
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GetPrivateCredentialsResultCallback callback) override;
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// Blocking version of `GetPrivateCredentials`
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location::nearby::ExceptionOr<
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std::vector<nearby::internal::PrivateCredential>>
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GetPrivateCredentialsSync(const CredentialSelector& credential_selector,
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absl::Duration timeout);
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// Used to fetch remote public creds when scanning.
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void GetPublicCredentials(
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const CredentialSelector& credential_selector,
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PublicCredentialType public_credential_type,
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GetPublicCredentialsResultCallback callback) override;
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// Blocking version of `GetPublicCredentials`.
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::location::nearby::ExceptionOr<
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std::vector<::nearby::internal::PublicCredential>>
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GetPublicCredentialsSync(const CredentialSelector& credential_selector,
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PublicCredentialType public_credential_type,
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absl::Duration timeout);
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std::string DecryptDeviceMetadata(
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absl::string_view device_metadata_encryption_key,
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absl::string_view authenticity_key,
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absl::string_view device_metadata_string) override;
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std::pair<nearby::internal::PrivateCredential,
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nearby::internal::PublicCredential>
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CreatePrivateCredential(
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const nearby::internal::DeviceMetadata& device_metadata,
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nearby::internal::IdentityType identity_type, uint64_t start_time_ms,
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uint64_t end_time_ms);
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nearby::internal::PublicCredential CreatePublicCredential(
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const nearby::internal::PrivateCredential& private_credential,
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const std::vector<uint8_t>& public_key);
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virtual std::string EncryptDeviceMetadata(
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absl::string_view device_metadata_encryption_key,
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absl::string_view authenticity_key,
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absl::string_view device_metadata_string);
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// Extend the key from 16 bytes to 32 bytes.
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std::vector<uint8_t> ExtendMetadataEncryptionKey(
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absl::string_view device_metadata_encryption_key);
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private:
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std::unique_ptr<location::nearby::CredentialStorageImpl>
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credential_storage_ptr_;
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};
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} // namespace presence
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_CREDENTIAL_MANAGER_IMPL_H_
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