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 "a polynomial time attack on the bbcrs scheme"):
  Abstract: The BBCRS scheme is a variant of the McEliece public-key encryption scheme where the hiding phase is performed by taking the inverse of a matrix which is of the form $\mathbf{T} +\mathbf{R}$ where $\mathbf{T}$ is a sparse matrix with average row/column weight equal to a very small quantity $m$, usually $m < 2$, and $\mathbf{R}$ is a matrix of small rank $z\geqslant 1$. The rationale of this new transformation is the reintroduction of families of codes, like generalized Reed-Solomon codes, that are famously known for representing insecure choices. We present a key-recovery attack when $z = 1$ and $m$ is chosen between $1$ and $1 + R + O( \frac{1}{\sqrt{n}} )$ where $R$ denotes the code rate. This attack has complexity $O(n^6)$ and breaks all the parameters suggested in the literature.

Includes members:
  Member "squares of random linear codes":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "squares of matrix product codes")
  Member "polynomial time attack on wild mceliece over quadratic extensions":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "squares of matrix product codes")
  Member "a polynomial time attack against algebraic geometry code based public key cryptosystems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "mcnie a code based public key cryptosystem")
  Member "distinguisher based attacks on public key cryptosystems using reed solomon codes":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "encryption scheme based on expanded reed solomon codes")
  Member "error correcting pairs for a public key cryptosystem":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "variations of the mceliece cryptosystem")
  Member "enhanced public key security for the mceliece cryptosystem":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "on the security of a loidreau s rank metric code based encryption scheme")

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)