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: "decent a decentralized architecture for enforcing privacy in online social networks"
  Abstract: A multitude of privacy breaches, both accidental and malicious, have prompted users to distrust centralized providers of online social networks (OSNs) and investigate decentralized solutions. We examine the design of a fully decentralized (peer-to-peer) OSN, with a special focus on privacy and security. In particular, we wish to protect the confidentiality, integrity, and availability of user content and the privacy of user relationships. We propose DECENT, an architecture for OSNs that uses a distributed hash table to store user data, and features cryptographic protections for confidentiality and integrity, as well as support for flexible attribute policies and fast revocation. DECENT ensures that neither data nor social relationships are visible to unauthorized users and provides availability through replication and authentication of updates. We evaluate DECENT through simulation and experiments on the PlanetLab network and show that DECENT is able to replicate the main functionality of current centralized OSNs with manageable overhead.

Connected through hyperedge HE-1 (induced by source paper "peer to peer based social networks a comprehensive survey"):
  with members:
    - "privacy and security in online social networks a survey"
    - "a survey of p2p multidimensional indexing structures"
    - "hskip a self stabilizing overlay network for nodes with heterogeneous bandwidths"
    - "twister a p2p microblogging platform"
    - "supernova super peers based architecture for decentralized online social networks"
    - "skip webs efficient distributed data structures for multi dimensional data sets"
    - "attrition defenses for a peer to peer digital preservation system"
    - "an analysis of the skype peer to peer internet telephony protocol"

Connected through hyperedge HE-2 (induced by source paper "libresocial a peer to peer framework for online social networks"):
  with members:
    - "myzone a next generation online social network"
    - "supernova super peers based architecture for decentralized online social networks"

Connected through hyperedge HE-3 (induced by source paper "a blueprint for interoperable blockchains"):
  with members:
    - "cross chain deals and adversarial commerce"
    - "towards scaling blockchain systems via sharding"
    - "atomic cross chain swaps"
    - "pdfs practical data feed service for smart contracts"
    - "forkbase an efficient storage engine for blockchain and forkable applications"
    - "securify practical security analysis of smart contracts"
    - "sprites and state channels payment networks that go faster than lightning"
    - "adding concurrency to smart contracts"

Connected through hyperedge HE-4 (induced by source paper "a survey on the security of pervasive online social networks posns"):
  with members:
    - "a framework for mitigating zero day attacks in iot"
    - "nhad neuro fuzzy based horizontal anomaly detection in online social networks"
    - "self enforcing game theory based resource allocation for lorawan assisted public safety communications"
    - "managing service heterogeneity using osmotic computing"
    - "netspam a network based spam detection framework for reviews in online social media"
    - "a privacy preserving community based p2p osns using broadcast encryption supporting recommendation mechanism"
    - "extension of mih to support fpmipv6 for optimized heterogeneous handover"
    - "analyzing resilience of interest based social networks against node and link failures"

Connected through hyperedge HE-5 (induced by source paper "k rac a fine grained k resilient access control scheme for distributed hash tables"):
  with members:
    - "evaluating connection resilience for self organizing cyber physical systems"

Connected through hyperedge HE-6 (induced by source paper "socially aware distributed hash tables for decentralized online social networks"):
  with members:
    - "special issue on foundations of social computing enabling social applications via decentralized social data management"
    - "shaping communities out of triangles"
    - "supernova super peers based architecture for decentralized online social networks"

Connected through hyperedge HE-7 (induced by source paper "warp a icn architecture for social data"):
  with members:
    - "on the benefit of information centric networks for traffic engineering"
    - "contentflow mapping content to flows in software defined networks"
    - "cdn content distribution network"

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)