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 scrambling encryption algorithm of pixel bits"
  Abstract: Position scrambling (permutation) is widely used in multimedia encryption schemes and some international encryption standards, such as the Data Encryption Standard and the Advanced Encryption Standard. In this article, the authors re-evaluate the security of a typical image-scrambling encryption algorithm (ISEA). Using the internal correlation remaining in the cipher image, they disclose important visual information of the corresponding plain image in a ciphertext-only attack scenario. Furthermore, they found that the real scrambling domain--the position-scrambling scope of ISEA's scrambled elements--can be used to support an efficient known or chosen-plaintext attack on it. Detailed experimental results have verified these points and demonstrate that some advanced multimedia processing techniques can facilitate the cryptanalysis of multimedia encryption algorithms.

Connected through hyperedge HE-1 (induced by source paper "an efficient image encryption scheme based on ordered quasi resonant rossby drift wave triads and mordell elliptic curves"):
  with members:
    - "efficient construction of s boxes based on a mordell elliptic curve over a finite field"
    - "on the cryptanalysis of fridrich s chaotic image encryption scheme"
    - "a polynomial description of the rijndael advanced encryption standard"

Connected through hyperedge HE-2 (induced by source paper "when an attacker meets a cipher image in 2018 a year in review"):
  with members:
    - "dynamic analysis of digital chaotic maps via state mapping networks"
    - "cryptanalysis of a chaotic image encryption algorithm based on information entropy"
    - "security evaluation for block scrambling based image encryption including jpeg distortion against jigsaw puzzle solver attacks"
    - "on the cryptanalysis of fridrich s chaotic image encryption scheme"
    - "cryptanalyzing an image encryption algorithm based on autoblocking and electrocardiography"
    - "cracking a hierarchical chaotic image encryption algorithm based on permutation"

Connected through hyperedge HE-3 (induced by source paper "cryptanalyzing a medical privacy protection scheme based on dna coding and chaos"):
  with members:
    - "dynamic analysis of digital chaotic maps via state mapping networks"
    - "cryptanalysis of a chaotic image encryption algorithm based on information entropy"
    - "cryptanalyzing an image encryption algorithm based on autoblocking and electrocardiography"
    - "cryptanalyzing a rgb image encryption algorithm based on dna encoding and chaos map"
    - "a general quantitative cryptanalysis of permutation only multimedia ciphers against plaintext attacks"

Connected through hyperedge HE-4 (induced by source paper "modified integral imaging reconstruction and encryption using an improved sr reconstruction algorithm"):
  with members:
    - "cryptanalysis of a chaotic image encryption algorithm based on information entropy"

Connected through hyperedge HE-5 (induced by source paper "cryptanalysis of a chaotic image encryption algorithm based on information entropy"):
  with members:
    - "on the cryptanalysis of fridrich s chaotic image encryption scheme"
    - "cryptanalyzing an image encryption algorithm based on autoblocking and electrocardiography"
    - "cracking a hierarchical chaotic image encryption algorithm based on permutation"
    - "cryptanalyzing image encryption using chaotic logistic map"
    - "dynamic analysis of chaotic maps as complex networks in the digital domain"
    - "network analysis of the state space of chaotic map in digital domain"
    - "entropy and set cardinality inequalities for partition determined functions"

Connected through hyperedge HE-6 (induced by source paper "grayscale based block scrambling image encryption for social networking services"):
  with members:
    - "a generalized genetic algorithm based solver for very large jigsaw puzzles of complex types"
    - "an automatic solver for very large jigsaw puzzles using genetic algorithms"
    - "a classification engine for image ballistics of social data"

Connected through hyperedge HE-7 (induced by source paper "security evaluation for block scrambling based image encryption including jpeg distortion against jigsaw puzzle solver attacks"):
  with members:
    - "an automatic solver for very large jigsaw puzzles using genetic algorithms"
    - "solving jigsaw puzzles with linear programming"

Connected through hyperedge HE-8 (induced by source paper "encryption then compression systems using grayscale based image encryption for jpeg images"):
  with members:
    - "p3 toward privacy preserving photo sharing"

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)