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: "electromagnetic fault injection towards a fault model on a 32 bit microcontroller"
  Abstract: Injection of transient faults as a way to attack cryptographic implementations has been largely studied in the last decade. Several attacks that use electromagnetic fault injection against hardware or software architectures have already been presented. On micro controllers, electromagnetic fault injection has mostly been seen as a way to skip assembly instructions or subroutine calls. However, to the best of our knowledge, no precise study about the impact of an electromagnetic glitch fault injection on a micro controller has been proposed yet. The aim of this paper is twofold: providing a more in-depth study of the effects of electromagnetic glitch fault injection on a state-of-the-art micro controller and building an associated register-transfer level fault model.

Connected through hyperedge HE-1 (induced by source paper "electromagnetic fault injection against a system on chip toward new micro architectural fault models"):
  with members:
    - "spectre attacks exploiting speculative execution"
    - "high precision fault injections on the instruction cache of armv7 m architectures"

Connected through hyperedge HE-2 (induced by source paper "studying em pulse effects on superscalar microarchitectures at isa level"):
  with members:
    - "high precision fault injections on the instruction cache of armv7 m architectures"

Connected through hyperedge HE-3 (induced by source paper "formal verification of a software countermeasure against instruction skip attacks"):
  with members:
    - "a formal proof of countermeasures against fault injection attacks on crt rsa"

Connected through hyperedge HE-4 (induced by source paper "experimental evaluation of two software countermeasures against fault attacks"):
  with members:
    - "formal verification of a software countermeasure against instruction skip attacks"

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)