1 /* 2 * Copyright 2018 Google LLC 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef FCP_SECAGG_CLIENT_SECAGG_CLIENT_R1_SHARE_KEYS_INPUT_SET_STATE_H_ 18 #define FCP_SECAGG_CLIENT_SECAGG_CLIENT_R1_SHARE_KEYS_INPUT_SET_STATE_H_ 19 20 #include <cstdint> 21 #include <memory> 22 #include <string> 23 #include <vector> 24 25 #include "fcp/base/monitoring.h" 26 #include "fcp/secagg/client/secagg_client_r1_share_keys_base_state.h" 27 #include "fcp/secagg/client/secagg_client_state.h" 28 #include "fcp/secagg/client/send_to_server_interface.h" 29 #include "fcp/secagg/client/state_transition_listener_interface.h" 30 #include "fcp/secagg/shared/aes_prng_factory.h" 31 #include "fcp/secagg/shared/ecdh_key_agreement.h" 32 #include "fcp/secagg/shared/input_vector_specification.h" 33 #include "fcp/secagg/shared/prng.h" 34 #include "fcp/secagg/shared/secagg_messages.pb.h" 35 36 namespace fcp { 37 namespace secagg { 38 39 // This class represents the client's Round 1: Share Keys state with the input 40 // already set. This state should transition to the Round 2: Masked Input 41 // Collection (Input Set) state, but can also transition directly to the 42 // Completed or Aborted states. 43 44 class SecAggClientR1ShareKeysInputSetState 45 : public SecAggClientR1ShareKeysBaseState { 46 public: 47 SecAggClientR1ShareKeysInputSetState( 48 uint32_t max_neighbors_expected, 49 uint32_t minimum_surviving_neighbors_for_reconstruction, 50 std::unique_ptr<EcdhKeyAgreement> enc_key_agreement, 51 std::unique_ptr<SecAggVectorMap> input_map, 52 std::unique_ptr<std::vector<InputVectorSpecification> > 53 input_vector_specs, 54 std::unique_ptr<SecurePrng> prng, 55 std::unique_ptr<EcdhKeyAgreement> prng_key_agreement, 56 std::unique_ptr<SendToServerInterface> sender, 57 std::unique_ptr<StateTransitionListenerInterface> transition_listener, 58 std::unique_ptr<AesPrngFactory> prng_factory, 59 AsyncAbort* async_abort = nullptr); 60 61 ~SecAggClientR1ShareKeysInputSetState() override = default; 62 63 StatusOr<std::unique_ptr<SecAggClientState> > HandleMessage( 64 const ServerToClientWrapperMessage& message) override; 65 66 // Returns the name of this state, "R1_SHARE_KEYS_INPUT_SET". 67 std::string StateName() const override; 68 69 private: 70 friend class SecAggClientR1ShareKeysInputSetStateTest_ShareKeysRequestIsHandledCorrectlyWithDeadClient_Test; // NOLINT 71 72 const uint32_t max_neighbors_expected_; 73 const uint32_t minimum_surviving_neighbors_for_reconstruction_; 74 std::unique_ptr<EcdhKeyAgreement> enc_key_agreement_; 75 std::unique_ptr<SecAggVectorMap> input_map_; 76 std::unique_ptr<std::vector<InputVectorSpecification> > input_vector_specs_; 77 std::unique_ptr<SecurePrng> prng_; 78 std::unique_ptr<EcdhKeyAgreement> prng_key_agreement_; 79 std::unique_ptr<AesPrngFactory> prng_factory_; 80 std::vector<ShamirShare> self_prng_key_shares_; 81 std::vector<ShamirShare> pairwise_prng_key_shares_; 82 }; 83 84 } // namespace secagg 85 } // namespace fcp 86 87 #endif // FCP_SECAGG_CLIENT_SECAGG_CLIENT_R1_SHARE_KEYS_INPUT_SET_STATE_H_ 88