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 "a physical layer authentication assisted scheme for enhancing 3gpp authentication"):
  Abstract: The broadcast nature of radio propagation makes wireless networks vulnerable to eavesdropping attacks. To enhance authentication strength in wireless networks, various physical layer authentication schemes were proposed by exploiting physical layer characteristics. Recently, we proposed a novel PHYsical layer Phase Challenge-Response Authentication Scheme (PHY PCRAS), which exploits both the reciprocity and randomness of the phase responses over independent parallel multicarrier channels. In this paper, we first extend it to more practical Orthogonal Frequency-Division Multiplexing (OFDM) transmission. Then, security analysis is provided, and information-theoretic security is formulated for PHY-PCRAS over both independent and correlated subchannels. Finally, we propose a practical framework for incorporating the mechanism of physical layer authentication into the current Third Generation Partnership Project (3GPP) Authentication and Key Agreement (AKA) protocol. Compared to the conventional 3GPP AKA protocol, the PHY-PCRAS assisted authentication process can ensure some degree of information-theoretic security. It is also possible to further protect the subsequent classic AKA process on the air through the physical layer secure information transmission technique.

Includes members:
  Member "on the error region for channel estimation based physical layer authentication over rayleigh fading":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "learning aided physical layer authentication as an intelligent process")
  Member "information theoretically secret key generation for fading wireless channels":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "covert secret key generation with an active warden")
  Member "using the physical layer for wireless authentication in time variant channels":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "on the effective capacity of an underwater acoustic channel under impersonation attack")

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.IT(Information Theory)