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: "enhanced performance and privacy for tls over tcp fast open"
  Abstract: Small TCP flows make up the majority of web flows. For them, the TCP three-way handshake represents a significant delay overhead. The TCP Fast Open (TFO) protocol provides zero round-trip time (0-RTT) handshakes for subsequent TCP connections to the same host. In this paper, we present real-world privacy and performance limitations of TFO. We investigated its deployment on popular websites and browsers. We found that a client revisiting a web site for the first time fails to use an abbreviated TFO handshake about 40% of the time due to web server load-balancing. Our analysis further reveals significant privacy problems in the protocol design and implementation. Network-based attackers and online trackers can exploit these shortcomings to track the online activities of users. As a countermeasure, we introduce a novel protocol called TCP Fast Open Privacy (FOP). It overcomes the performance and privacy limitations of TLS over TFO by utilizing a custom TLS extension. TCP FOP prevents tracking by network attackers and impedes third-party tracking, while still allowing for 0-RTT handshakes as in TFO. As a proof-of-concept, we have implemented the proposed protocol. Our measurements indicate that TCP FOP outperforms TLS over TFO when websites are served from multiple IP addresses.

Connected through hyperedge HE-1 (induced by source paper "accelerating quic s connection establishment on high latency access networks"):
  with members:
    - "surfing the web quicker than quic via a shared address validation"
    - "enhanced performance for the encrypted web through tls resumption across hostnames"
    - "eyeorg a platform for crowdsourcing web quality of experience measurements"
    - "on the fly tcp acceleration with miniproxy"

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)