mirror of
https://github.com/kidfromjupiter/nearby.git
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121 lines
4.6 KiB
C++
121 lines
4.6 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_ = std::make_unique<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<nearby::CredentialStorageImpl> 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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GenerateCredentialsResultCallback 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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nearby::ExceptionOr<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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::nearby::ExceptionOr<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<nearby::CredentialStorageImpl> 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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