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: "lightweight security for network coding"
  Abstract: Under the emerging network coding paradigm, intermediate nodes in the network are allowed not only to store and forward packets but also to process and mix different data flows. We propose a low-complexity cryptographic scheme that exploits the inherent security provided by random linear network coding and offers the advantage of reduced overhead in comparison to traditional end-to-end encryption of the entire data. Confidentiality is achieved by protecting (or "locking") the source coefficients required to decode the encoded data, without preventing intermediate nodes from running their standard network coding operations. Our scheme can be easily combined with existing techniques that counter active attacks.

Connected through hyperedge HE-1 (induced by source paper "privacy protection for mobile cloud data a network coding approach"):
  with members:
    - "de anonymizing social networks"

Connected through hyperedge HE-2 (induced by source paper "perfect secrecy in physical layer network coding systems from structured interference"):
  with members:
    - "secure compute and forward in a bidirectional relay"
    - "secure degrees of freedom of one hop wireless networks"
    - "feasibility of interference alignment for the mimo interference channel"
    - "strong secrecy in wireless network coding systems with m qam modulators"
    - "five disruptive technology directions for 5g"
    - "degrees of freedom for the mimo multi way relay channel"
    - "reliable physical layer network coding"
    - "interference alignment for secrecy"

Connected through hyperedge HE-3 (induced by source paper "strong secrecy in wireless network coding systems from structured interference"):
  with members:
    - "strong secrecy in wireless network coding systems with m qam modulators"
    - "five disruptive technology directions for 5g"
    - "reliable physical layer network coding"
    - "interference assisted secret communication"
    - "joint relay and jammer selection for secure two way relay networks"
    - "cooperation with an untrusted relay a secrecy perspective"
    - "compute and forward harnessing interference through structured codes"

Connected through hyperedge HE-4 (induced by source paper "fulcrum network codes a code for fluid allocation of complexity"):
  with members:
    - "hybrid noncoherent network coding"
    - "a survey on network codes for distributed storage"

Connected through hyperedge HE-5 (induced by source paper "security in distributed storage systems by communicating a logarithmic number of bits"):
  with members:
    - "network coding for distributed storage systems"
    - "coding for errors and erasures in random network coding"

Connected through hyperedge HE-6 (induced by source paper "network coding security attacks and countermeasures"):
  with members:
    - "adversarial models and resilient schemes for network coding"
    - "a rank metric approach to error control in random network coding"
    - "counteracting byzantine adversaries with network coding an overhead analysis"
    - "network coding for distributed storage systems"
    - "security for wiretap networks via rank metric codes"
    - "coding for errors and erasures in random network coding"
    - "coding for network coding"
    - "on coding for reliable communication over packet networks"

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)