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 "authentication schemes for smart mobile devices threat models countermeasures and open research issues"):
  Abstract: This paper presents a comprehensive investigation of authentication schemes for smart mobile devices. We start by providing an overview of existing survey articles published in the recent years that deal with security for mobile devices. Then, we describe and give a classification of threat models in smart mobile devices in five categories, including, identity-based attacks, eavesdropping-based attacks, combined eavesdropping and identity-based attacks, manipulation-based attacks, and service-based attacks. We also provide a classification of countermeasures into four types of categories, including, cryptographic functions, personal identification, classification algorithms, and channel characteristics. According to these, we categorize authentication schemes for smart mobile devices in four categories, namely, 1) biometric-based authentication schemes, 2) channel-based authentication schemes, 3) factor-based authentication schemes, and 4) ID-based authentication schemes. In addition, we provide a taxonomy and comparison of authentication schemes for smart mobile devices in the form of tables. Finally, we identify open challenges and future research directions.

Includes members:
  Member "systematic classification of side channel attacks a case study for mobile devices":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "taxonomy and challenges of out of band signal injection attacks and defenses")
  Member "active authentication on mobile devices via stylometry application usage web browsing and gps location":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "actions speak louder than pass words passive authentication of smartphone users via deep temporal features")
  Member "privacy preserving schemes for ad hoc social networks a survey":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "socially aware congestion control in ad hoc networks current status and the way forward")
  Member "partial face detection for continuous authentication":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "authentication and authorization for mobile iot devices using bio features recent advances and future trends")
  Member "hmog new behavioral biometric features for continuous authentication of smartphone users":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a report on personally identifiable sensor data from smartphone devices")
  Member "touchin sightless two factor authentication on multi touch mobile devices":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "authentication and authorization for mobile iot devices using bio features recent advances and future trends")
  Member "touchalytics on the applicability of touchscreen input as a behavioral biometric for continuous authentication":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "on the resilience of biometric authentication systems against random inputs")

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)