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: "an efficient structural attack on nist submission dags"
  Abstract: We present an efficient key recovery attack on code based encryption schemes using some quasi-dyadic alternant codes with extension degree 2. This attack permits to break the proposal DAGS recently submitted to NIST.

Connected through hyperedge HE-1 (induced by source paper "cryptanalysis of a system based on twisted reed solomon codes"):
  with members:
    - "twisted gabidulin codes in the gpt cryptosystem"
    - "structural properties of twisted reed solomon codes with applications to cryptography"
    - "recovering short secret keys of rlce in polynomial time"
    - "twisted reed solomon codes"
    - "quantum resistant random linear code based public key encryption scheme rlce"
    - "cryptanalysis of mceliece cryptosystem based on algebraic geometry codes and their subcodes"
    - "distinguisher based attacks on public key cryptosystems using reed solomon codes"

Connected through hyperedge HE-2 (induced by source paper "practical algebraic attack on dags"):
  with members:
    - "on the security of some compact keys for mceliece scheme"
    - "folding alternant and goppa codes with non trivial automorphism groups"
    - "polynomial time attack on wild mceliece over quadratic extensions"
    - "distinguisher based attacks on public key cryptosystems using reed solomon codes"
    - "a distinguisher based attack on a variant of mceliece s cryptosystem based on reed solomon codes"
    - "a distinguisher based attack of a homomorphic encryption scheme relying on reed solomon codes"

Connected through hyperedge HE-3 (induced by source paper "properties of constacyclic codes under the schur product"):
  with members:
    - "squares of matrix product codes"
    - "on squares of cyclic codes"
    - "recovering short secret keys of rlce in polynomial time"
    - "a generalization of quasi twisted codes multi twisted codes"
    - "quantum resistant random linear code based public key encryption scheme rlce"
    - "squares of random linear codes"
    - "polynomial time attack on wild mceliece over quadratic extensions"
    - "distinguisher based attacks on public key cryptosystems using reed solomon codes"

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)