human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "when an attacker meets a cipher image in 2018 a year in review"):
  Abstract: This paper aims to review the encountered technical contradictions when an attacker meets the cipher-images encrypted by the image encryption schemes (algorithms) proposed in 2018 from the viewpoint of an image cryptanalyst. The most representative works among them are selected and classified according to their essential structures. Almost all image cryptanalysis works published in 2018 are surveyed due to their small number. The challenging problems on design and analysis of image encryption schemes are summarized to receive the attentions of both designers and attackers (cryptanalysts) of image encryption schemes, which may promote solving scenario-oriented image security problems with new technologies.

Includes members:
  Member "dynamic analysis of digital chaotic maps via state mapping networks":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "cryptanalyzing a medical privacy protection scheme based on dna coding and chaos")
  Member "cryptanalysis of a chaotic image encryption algorithm based on information entropy":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "cryptanalyzing a medical privacy protection scheme based on dna coding and chaos")
  Member "security evaluation for block scrambling based image encryption including jpeg distortion against jigsaw puzzle solver attacks":
    also connected through other hyperedges:
      (none)
  Member "cryptanalyzing an image scrambling encryption algorithm of pixel bits":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "an efficient image encryption scheme based on ordered quasi resonant rossby drift wave triads and mordell elliptic curves")
  Member "on the cryptanalysis of fridrich s chaotic image encryption scheme":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "an efficient image encryption scheme based on ordered quasi resonant rossby drift wave triads and mordell elliptic curves")
  Member "cryptanalyzing an image encryption algorithm based on autoblocking and electrocardiography":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "an authentication protocol based on chaos and zero knowledge proof")
  Member "cracking a hierarchical chaotic image encryption algorithm based on permutation":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "cryptanalysis of an image block encryption algorithm based on chaotic maps")

Question: Please tell me which class the source paper 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)