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: "cryptanalyzing an image encryption scheme based on logistic map"
  Abstract: Abstract Recently, an image encryption scheme based 2 on logistic map was proposed. It has been reported by a 3 research group that its equivalent secret key can be re- 4 constructed with only one pair of known-plaintext and 5 the corresponding cipher-text. Utilizing stable distribu- 6 tion of the chaotic states generated by iterating the lo- 7 gistic map, this paper further demonstrates that much 8 more information about the secret key can be derived 9 under the same condition. 10 Keywords cryptanalysis · chosen-plaintext attack · 11 image encryption · logistic map 12 1Introduction 13 With the rapid development of information transmis- 14 sion technology and popularization of multimedia cap- 15 ture device, multimedia data are transmitted over all 16 kinds of wired/wireless networks more and more fre- 17 quently. Consequently, the security of multimedia data 18 becomes a serious concern of many people. However, 19 the traditional text encryption schemes cannot protect 20 multimedia data eﬃciently, mainly due to the big dif-

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)