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/*
* Copyright 2021 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_R2_MASKED_INPUT_COLL_INPUT_NOT_SET_STATE_H_
#define FCP_SECAGG_CLIENT_SECAGG_CLIENT_R2_MASKED_INPUT_COLL_INPUT_NOT_SET_STATE_H_
#include <cstdint>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "fcp/base/monitoring.h"
#include "fcp/secagg/client/other_client_state.h"
#include "fcp/secagg/client/secagg_client_r2_masked_input_coll_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_key.h"
#include "fcp/secagg/shared/aes_prng_factory.h"
#include "fcp/secagg/shared/compute_session_id.h"
#include "fcp/secagg/shared/input_vector_specification.h"
#include "fcp/secagg/shared/secagg_messages.pb.h"
namespace fcp {
namespace secagg {
// This class represents the client's Round 2: Masked Input Collection state
// with the input not yet set, and the message from the server not yet received.
// This state should transition to one of the other two Round 2 states:
// "Input Set" if SetInput is called first, or "Waiting For Input" if the
// server's message is received first. It can also transition directly to the
// Completed or Aborted states.
class SecAggClientR2MaskedInputCollInputNotSetState
: public SecAggClientR2MaskedInputCollBaseState {
public:
SecAggClientR2MaskedInputCollInputNotSetState(
uint32_t client_id,
uint32_t minimum_surviving_neighbors_for_reconstruction,
uint32_t number_of_alive_neighbors, uint32_t number_of_neighbors,
std::unique_ptr<std::vector<InputVectorSpecification> >
input_vector_specs,
std::unique_ptr<std::vector<OtherClientState> > other_client_states,
std::unique_ptr<std::vector<AesKey> > other_client_enc_keys,
std::unique_ptr<std::vector<AesKey> > other_client_prng_keys,
std::unique_ptr<ShamirShare> own_self_key_share,
std::unique_ptr<AesKey> self_prng_key,
std::unique_ptr<SendToServerInterface> sender,
std::unique_ptr<StateTransitionListenerInterface> transition_listener,
std::unique_ptr<SessionId> session_id,
std::unique_ptr<AesPrngFactory> prng_factory,
AsyncAbort* async_abort = nullptr);
~SecAggClientR2MaskedInputCollInputNotSetState() override;
StatusOr<std::unique_ptr<SecAggClientState> > HandleMessage(
const ServerToClientWrapperMessage& message) override;
StatusOr<std::unique_ptr<SecAggClientState> > SetInput(
std::unique_ptr<SecAggVectorMap> input_map) override;
// Returns the name of this state, "R2_MASKED_INPUT_COLL_INPUT_NOT_SET".
std::string StateName() const override;
private:
const uint32_t client_id_;
const uint32_t minimum_surviving_neighbors_for_reconstruction_;
uint32_t number_of_alive_neighbors_;
const uint32_t number_of_neighbors_;
std::unique_ptr<std::vector<InputVectorSpecification> > input_vector_specs_;
std::unique_ptr<std::vector<OtherClientState> > other_client_states_;
std::unique_ptr<std::vector<AesKey> > other_client_enc_keys_;
std::unique_ptr<std::vector<AesKey> > other_client_prng_keys_;
std::unique_ptr<ShamirShare> own_self_key_share_;
std::unique_ptr<AesKey> self_prng_key_;
std::unique_ptr<SessionId> session_id_;
std::unique_ptr<AesPrngFactory> prng_factory_;
};
} // namespace secagg
} // namespace fcp
#endif // FCP_SECAGG_CLIENT_SECAGG_CLIENT_R2_MASKED_INPUT_COLL_INPUT_NOT_SET_STATE_H_
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