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/*
* Copyright 2018 Google LLC
*
* 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 FCP_SECAGG_CLIENT_SECAGG_CLIENT_R0_ADVERTISE_KEYS_INPUT_SET_STATE_H_
#define FCP_SECAGG_CLIENT_SECAGG_CLIENT_R0_ADVERTISE_KEYS_INPUT_SET_STATE_H_
#include <cstdint>
#include <memory>
#include <string>
#include <vector>
#include "fcp/base/monitoring.h"
#include "fcp/secagg/client/secagg_client_alive_base_state.h"
#include "fcp/secagg/client/secagg_client_state.h"
#include "fcp/secagg/client/send_to_server_interface.h"
#include "fcp/secagg/client/state_transition_listener_interface.h"
#include "fcp/secagg/shared/aes_prng_factory.h"
#include "fcp/secagg/shared/input_vector_specification.h"
#include "fcp/secagg/shared/prng.h"
#include "fcp/secagg/shared/secagg_messages.pb.h"
namespace fcp {
namespace secagg {
// This class represents the client's Round 0: Advertise Keys state with the
// input already set. This state should transition to the Round 1: Share Keys
// (Input Set) state, but can also transition directly to the Completed or
// Aborted states.
class SecAggClientR0AdvertiseKeysInputSetState
: public SecAggClientAliveBaseState {
public:
SecAggClientR0AdvertiseKeysInputSetState(
uint32_t max_neighbors_expected,
uint32_t minimum_surviving_neighbors_for_reconstruction,
std::unique_ptr<SecAggVectorMap> input_map,
std::unique_ptr<std::vector<InputVectorSpecification> >
input_vector_specs,
std::unique_ptr<SecurePrng> prng,
std::unique_ptr<SendToServerInterface> sender,
std::unique_ptr<StateTransitionListenerInterface> transition_listener,
std::unique_ptr<AesPrngFactory> prng_factory,
AsyncAbort* async_abort = nullptr);
~SecAggClientR0AdvertiseKeysInputSetState() override;
StatusOr<std::unique_ptr<SecAggClientState> > Start() override;
StatusOr<std::unique_ptr<SecAggClientState> > HandleMessage(
const ServerToClientWrapperMessage& message) override;
// Returns the name of this state, "R0_ADVERTISE_KEYS_INPUT_SET".
std::string StateName() const override;
private:
const uint32_t max_neighbors_expected_;
const uint32_t minimum_surviving_neighbors_for_reconstruction_;
std::unique_ptr<SecAggVectorMap> input_map_;
std::unique_ptr<std::vector<InputVectorSpecification> > input_vector_specs_;
std::unique_ptr<SecurePrng> prng_;
std::unique_ptr<AesPrngFactory> prng_factory_;
};
} // namespace secagg
} // namespace fcp
#endif // FCP_SECAGG_CLIENT_SECAGG_CLIENT_R0_ADVERTISE_KEYS_INPUT_SET_STATE_H_
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