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: "robust and efficient elimination of cache and timing side channels"
  Abstract: Timing and cache side channels provide powerful attacks against many sensitive operations including cryptographic implementations. Existing defenses cannot protect against all classes of such attacks without incurring prohibitive performance overhead. A popular strategy for defending against all classes of these attacks is to modify the implementation so that the timing and cache access patterns of every hardware instruction is independent of the secret inputs. However, this solution is architecture-specific, brittle, and difficult to get right. In this paper, we propose and evaluate a robust low-overhead technique for mitigating timing and cache channels. Our solution requires only minimal source code changes and works across multiple languages/platforms. We report the experimental results of applying our solution to protect several C, C++, and Java programs. Our results demonstrate that our solution successfully eliminates the timing and cache side-channel leaks while incurring significantly lower performance overhead than existing approaches.

Connected through hyperedge HE-1 (induced by source paper "pacer network side channel mitigation in the cloud"):
  with members:
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "obladi oblivious serializable transactions in the cloud"
    - "loophole timing attacks on shared event loops in chrome"
    - "mitigating timing side channel in shared schedulers"
    - "drama exploiting dram addressing for cross cpu attacks"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "deterministically deterring timing attacks in deterland"

Connected through hyperedge HE-2 (induced by source paper "eliminating timing side channel leaks using program repair"):
  with members:
    - "adversarial symbolic execution for detecting concurrency related cache timing leaks"
    - "ozone efficient execution with zero timing leakage for modern microarchitectures"

Connected through hyperedge HE-3 (induced by source paper "your processor leaks information and there s nothing you can do about it"):
  with members:
    - "flush flush a fast and stealthy cache attack"
    - "flush flush a fast and stealthy cache attack"
    - "rowhammer js a remote software induced fault attack in javascript"
    - "drama exploiting dram addressing for cross cpu attacks"
    - "reverse engineering intel dram addressing and exploitation"

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)