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: "hornet high speed onion routing at the network layer"
  Abstract: We present HORNET, a system that enables high-speed end-to-end anonymous channels by leveraging next generation network architectures. HORNET is designed as a low-latency onion routing system that operates at the network layer thus enabling a wide range of applications. Our system uses only symmetric cryptography for data forwarding yet requires no per-flow state on intermediate nodes. This design enables HORNET nodes to process anonymous traffic at over 93 Gb/s. HORNET can also scale as required, adding minimal processing overhead per additional anonymous channel. We discuss design and implementation details, as well as a performance and security evaluation.

Connected through hyperedge HE-1 (induced by source paper "prifi low latency anonymity for organizational networks"):
  with members:
    - "taranet traffic analysis resistant anonymity at the network layer"
    - "i know what you saw last minute encrypted http adaptive video streaming title classification"
    - "the loopix anonymity system"
    - "atom horizontally scaling strong anonymity"
    - "device fingerprinting in wireless networks challenges and opportunities"
    - "riposte an anonymous messaging system handling millions of users"
    - "dovetail stronger anonymity in next generation internet routing"
    - "hang with your buddies to resist intersection attacks"

Connected through hyperedge HE-2 (induced by source paper "anonymizing masses practical light weight anonymity at the network level"):
  with members:
    - "taranet traffic analysis resistant anonymity at the network layer"
    - "a multi perspective analysis of carrier grade nat deployment"
    - "beyond counting new perspectives on the active ipv4 address space"
    - "dovetail stronger anonymity in next generation internet routing"
    - "netfence preventing internet denial of service from inside out"
    - "active internet traffic filtering real time response to denial of service attacks"

Connected through hyperedge HE-3 (induced by source paper "breaking and partially fixing provably secure onion routing"):
  with members:
    - "on privacy notions in anonymous communication"
    - "taranet traffic analysis resistant anonymity at the network layer"

Connected through hyperedge HE-4 (induced by source paper "tempest temporal dynamics in anonymity systems"):
  with members:
    - "onions in the crosshairs when the man really is out to get you"
    - "raptor routing attacks on privacy in tor"
    - "measuring and mitigating as level adversaries against tor"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "avoiding the man on the wire improving tor s security with trust aware path selection"
    - "dovetail stronger anonymity in next generation internet routing"
    - "defending tor from network adversaries a case study of network path prediction"
    - "stealthy traffic analysis of low latency anonymous communication using throughput fingerprinting"

Connected through hyperedge HE-5 (induced by source paper "taranet traffic analysis resistant anonymity at the network layer"):
  with members:
    - "the loopix anonymity system"
    - "raptor routing attacks on privacy in tor"
    - "dovetail stronger anonymity in next generation internet routing"
    - "hang with your buddies to resist intersection attacks"
    - "stealthy traffic analysis of low latency anonymous communication using throughput fingerprinting"

Connected through hyperedge HE-6 (induced by source paper "the loopix anonymity system"):
  with members:
    - "mp3 a more efficient private presence protocol"
    - "riposte an anonymous messaging system handling millions of users"

Connected through hyperedge HE-7 (induced by source paper "rangzen anonymously getting the word out in a blackout"):
  with members:
    - "de anonymizing social networks"

Connected through hyperedge HE-8 (induced by source paper "scion five years later revisiting scalability control and isolation on next generation networks"):
  with members:
    - "sibra scalable internet bandwidth reservation architecture"
    - "designing a global authentication infrastructure"

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)