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: "lut lock a novel lut based logic obfuscation for fpga bitstream and asic hardware protection"
  Abstract: In this work, we propose LUT-Lock, a novel Look-Up-Table-based netlist obfuscation algorithm, for protecting the intellectual property that is mapped to an FPGA bitstream or an ASIC netlist. We, first, illustrate the effectiveness of several key features that make the LUT-based obfuscation more resilient against SAT attacks and then we embed the proposed key features into our proposed LUT-Lock algorithm. We illustrates that LUT-Lock maximizes the resiliency of the LUT-based obfuscation against SAT attacks by forcing a near exponential increase in the execution time of a SAT solver with respect to the number of obfuscated gates. Hence, by adopting LUT-Lock algorithm, SAT attack execution time could be made unreasonably long by increasing the number of utilized LUTs.

Connected through hyperedge HE-1 (induced by source paper "dfssd deep faults and shallow state duality a provably strong obfuscation solution for circuits with restricted access to scan chain"):
  with members:
    - "sat hard cyclic logic obfuscation for protecting the ip in the manufacturing supply chain"
    - "functional analysis attacks on logic locking"
    - "is robust design for security robust enough attack on locked circuits with restricted scan chain access"
    - "coma communication and obfuscation management architecture"
    - "threats on logic locking a decade later"
    - "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"
    - "encrypt flip flop a novel logic encryption technique for sequential circuits"

Connected through hyperedge HE-2 (induced by source paper "sat hard cyclic logic obfuscation for protecting the ip in the manufacturing supply chain"):
  with members:
    - "functional analysis attacks on logic locking"
    - "coma communication and obfuscation management architecture"
    - "threats on logic locking a decade later"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"

Connected through hyperedge HE-3 (induced by source paper "coma communication and obfuscation management architecture"):
  with members:
    - "functional analysis attacks on logic locking"
    - "threats on logic locking a decade later"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "sail machine learning guided structural analysis attack on hardware obfuscation"
    - "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"

Connected through hyperedge HE-4 (induced by source paper "threats on logic locking a decade later"):
  with members:
    - "functional analysis attacks on logic locking"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"

Connected through hyperedge HE-5 (induced by source paper "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"):
  with members:
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "digital ip protection using threshold voltage control"

Connected through hyperedge HE-6 (induced by source paper "using multi core hw sw co design architecture for accelerating k means clustering algorithm"):
  with members:
    - "srclock sat resistant cyclic logic locking for protecting the hardware"

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)