human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "scalable byzantine consensus via hardware assisted secret sharing"
  Abstract: The surging interest in blockchain technology has revitalized the search for effective Byzantine consensus schemes. In particular, the blockchain community has been looking for ways to effectively integrate traditional Byzantine fault-tolerant (BFT) protocols into a blockchain consensus layer allowing various financial institutions to securely agree on the order of transactions. However, existing BFT protocols can only scale to tens of nodes due to their   $O(n^2)$       message complexity. In this paper, we propose FastBFT, a fast and scalable BFT protocol. At the heart of FastBFT is a novel message aggregation technique that combines hardware-based trusted execution environments (TEEs) with lightweight secret sharing. Combining this technique with several other optimizations (i.e., optimistic execution, tree topology and failure detection), FastBFT achieves low latency and high throughput even for large scale networks. Via systematic analysis and experiments, we demonstrate that FastBFT has better scalability and performance than previous BFT protocols.

Connected through hyperedge HE-1 (induced by source paper "effective scaling of blockchain beyond consensus innovations and moore s law"):
  with members:
    - "concurrency and privacy with payment channel networks"
    - "blockchain goes green an analysis of blockchain on low power nodes"
    - "an energy efficient reconfigurable dtls cryptographic engine for securing internet of things applications"
    - "morph an adaptive framework for efficient and byzantine fault tolerant sdn control plane"
    - "towards scaling blockchain systems via sharding"
    - "a scale out blockchain for value transfer with spontaneous sharding"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "blockbench a framework for analyzing private blockchains"

Connected through hyperedge HE-2 (induced by source paper "exploring the attack surface of blockchain a systematic overview"):
  with members:
    - "security services using blockchains a state of the art survey"
    - "a survey on the security of blockchain systems"
    - "an empirical analysis of anonymity in zcash"
    - "towards blockchain driven secure and transparent audit logs"
    - "end to end analysis of in browser cryptojacking"
    - "linbft linear communication byzantine fault tolerance for public blockchains"
    - "a survey on security and privacy issues of bitcoin"
    - "the impact of uncle rewards on selfish mining in ethereum"

Connected through hyperedge HE-3 (induced by source paper "permissioned blockchain through the looking glass architectural and implementation lessons learned"):
  with members:
    - "proof of execution reaching consensus through fault tolerant speculation"
    - "scaling blockchain databases through parallel resilient consensus paradigm"
    - "revisiting consensus protocols through wait free parallelization"
    - "streamchain do blockchains need blocks"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "revisiting fast practical byzantine fault tolerance"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"

Connected through hyperedge HE-4 (induced by source paper "sadan scalable adversary detection in autonomous networks"):
  with members:
    - "wise lightweight intelligent swarm attestation scheme for iot the verifier s perspective"
    - "a survey on low latency towards 5g ran core network and caching solutions"
    - "c flat control flow attestation for embedded systems software"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "exploiting social navigation"
    - "in network outlier detection in wireless sensor networks"
    - "code injection attacks on harvard architecture devices"

Connected through hyperedge HE-5 (induced by source paper "flow separating consensus and compute"):
  with members:
    - "ekiden a platform for confidentiality preserving trustworthy and performant smart contracts"
    - "proteus a scalable bft consesus protocol for blockchains"
    - "hotstuff bft consensus in the lens of blockchain"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "betting on blockchain consensus with fantomette"
    - "proof of work without all the work"
    - "consensus in the age of blockchains"

Connected through hyperedge HE-6 (induced by source paper "making speculative bft resilient with trusted monotonic counters"):
  with members:
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "revisiting fast practical byzantine fault tolerance thelma velma and zelma"
    - "a byzantine fault tolerant ordering service for the hyperledger fabric blockchain platform"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "keeping authorities honest or bust with decentralized witness cosigning"
    - "breaking the o n 2 bit barrier scalable byzantine agreement with an adaptive adversary"

Connected through hyperedge HE-7 (induced by source paper "fpc bi fast probabilistic consensus within byzantine infrastructures"):
  with members:
    - "communication cost of consensus for nodes with limited memory"
    - "rapid asynchronous plurality consensus"
    - "stabilizing consensus with many opinions"
    - "the power of two choices in distributed voting"

Connected through hyperedge HE-8 (induced by source paper "on fast probabilistic consensus in the byzantine setting"):
  with members:
    - "communication cost of consensus for nodes with limited memory"
    - "rapid asynchronous plurality consensus"
    - "stabilizing consensus with many opinions"
    - "the power of two choices in distributed voting"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.CR(Cryptography and Security)