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: "securestreams a reactive middleware framework for secure data stream processing"
  Abstract: The growing adoption of distributed data processing frameworks in a wide diversity of application domains challenges end-to-end integration of properties like security, in particular when considering deployments in the context of large-scale clusters or multi-tenant Cloud infrastructures.   This paper therefore introduces SecureStreams, a reactive middleware framework to deploy and process secure streams at scale. Its design combines the high-level reactive dataflow programming paradigm with Intel®'s low-level software guard extensions (SGX) in order to guarantee privacy and integrity of the processed data. The experimental results of SecureStreams are promising: while offering a fluent scripting language based on Lua, our middleware delivers high processing throughput, thus enabling developers to implement secure processing pipelines in just few lines of code.

Connected through hyperedge HE-1 (induced by source paper "distributed systems and trusted execution environments trade offs and challenges"):
  with members:
    - "supply chain malware targets sgx take care of what you sign"
    - "anonymous and confidential file sharing over untrusted clouds"
    - "sgx lkl securing the host os interface for trusted execution"
    - "smotherspectre exploiting speculative execution through port contention"
    - "streambox tz secure stream analytics at the edge with trustzone"
    - "sgxpectre stealing intel secrets from sgx enclaves via speculative execution"
    - "cyclosa decentralizing private web search through sgx based browser extensions"
    - "ibbe sgx cryptographic group access control using trusted execution environments"

Connected through hyperedge HE-2 (induced by source paper "streambox tz secure stream analytics at the edge with trustzone"):
  with members:
    - "trustshadow secure execution of unmodified applications with arm trustzone"
    - "c flat control flow attestation for embedded systems software"
    - "armageddon cache attacks on mobile devices"
    - "massively parallel sort merge joins in main memory multi core database systems"
    - "efficient system enforced deterministic parallelism"

Connected through hyperedge HE-3 (induced by source paper "using trusted execution environments for secure stream processing of medical data"):
  with members:
    - "security performance and energy trade offs of hardware assisted memory protection mechanisms"
    - "malware guard extension using sgx to conceal cache attacks"

Connected through hyperedge HE-4 (induced by source paper "security performance and energy trade offs of hardware assisted memory protection mechanisms"):
  with members:
    - "short paper stress sgx load and stress your enclaves for fun and profit"
    - "snort intrusion detection system with intel software guard extension intel sgx"
    - "severed subverting amd s virtual machine encryption"
    - "x search revisiting private web search using intel sgx"
    - "trustshadow secure execution of unmodified applications with arm trustzone"
    - "software grand exposure sgx cache attacks are practical"
    - "secure content based routing using intel software guard extensions"
    - "inferring fine grained control flow inside sgx enclaves with branch shadowing"

Connected through hyperedge HE-5 (induced by source paper "pubsub sgx exploiting trusted execution environments for privacy preserving publish subscribe systems"):
  with members:
    - "x search revisiting private web search using intel sgx"
    - "secure and privacy aware data dissemination for cloud based applications"
    - "secure content based routing using intel software guard extensions"
    - "teechan payment channels using trusted execution environments"

Connected through hyperedge HE-6 (induced by source paper "streambox tz a secure iot analytics engine at the edge"):
  with members:
    - "trustshadow secure execution of unmodified applications with arm trustzone"
    - "armageddon cache attacks on mobile devices"
    - "massively parallel sort merge joins in main memory multi core database systems"

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.DC(Distributed, Parallel, and Cluster Computing)