human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "resilient privacy protection for location based services through decentralization"):
  Abstract: Location-Based Services (LBSs) provide valuable services, with convenient features for mobile users. However, the location and other information disclosed through each query to the LBS erodes user  ...

Includes members:
  Member "resilient collaborative privacy for location based services":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "security and privacy in vehicular social networks")
  Member "efficient scalable and resilient vehicle centric certificate revocation list distribution in vanets":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "scaling pseudonymous authentication for large mobile systems")
  Member "secmace scalable and robust identity and credential management infrastructure in vehicular communication systems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "scaling pseudonymous authentication for large mobile systems")
  Member "towards deploying a scalable robust vehicular identity and credential management infrastructure":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "resilient collaborative privacy for location based services")
  Member "geo indistinguishability differential privacy for location based systems":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "local information privacy and its application to privacy preserving data aggregation")
  Member "vespa vehicular security and privacy preserving architecture":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "private authentication optimal information theoretic schemes")
  Member "secure vehicular communication systems design and architecture":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "scaling pseudonymous authentication for large mobile systems")

Question: Please tell me which class the source paper 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)