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: "on the complexity of the rank syndrome decoding problem"
  Abstract: In this paper we propose two new generic attacks on the Rank Syndrome Decoding (RSD) problem #R##N#Let $C$ be a random $[n,k]$ rank code over $GF(q^m)$ and let $y=x+e$ be a received word such that $x \in C$ and the $Rank(e)=r$. The first attack is combinatorial and permits to recover an error $e$ of rank weight $r$ in $min(O((n-k)^3m^3q^{r\lfloor\frac{km}{n}\rfloor}, O((n-k)^3m^3q^{(r-1)\lfloor\frac{(k+1)m}{n}\rfloor}))$ operations on $GF(q)$. This attack dramatically improves on previous attack by introducing the length $n$ of the code in the exponent of the complexity, which was not the case in previous generic attacks. which can be considered The second attack is based on a algebraic attacks: based on the theory of $q$-polynomials introduced by Ore we propose a new algebraic setting for the RSD problem that permits to consider equations and unknowns in the extension field $GF(q^m)$ rather than in $GF(q)$ as it is usually the case. We consider two approaches to solve the problem in this new setting. Linearization technics show that if $n \ge (k+1)(r+1)-1$ the RSD problem can be solved in polynomial time, more generally we prove that if $\lceil \frac{(r+1)(k+1)-(n+1)}{r} \rceil \le k$, the problem can be solved with an average complexity $O(r^3k^3q^{r\lceil \frac{(r+1)(k+1)-(n+1)}{r} \rceil})$. We also consider solving with \grob bases for which which we discuss theoretical complexity, we also consider consider hybrid solving with \grob bases on practical parameters. As an example of application we use our new attacks on all proposed recent cryptosystems which reparation the GPT cryptosystem, we break all examples of published proposed parameters, some parameters are broken in less than 1 s in certain cases.

Connected through hyperedge HE-1 (induced by source paper "algebraic attacks for solving the rank decoding and minrank problems without gr obner basis"):
  with members:
    - "an algebraic attack on rank metric code based cryptosystems"
    - "two attacks on rank metric code based schemes ranksign and an identity based encryption scheme"
    - "improved cryptanalysis of rank metric schemes based on gabidulin codes"
    - "new algorithms for decoding in the rank metric and an attack on the lrpc cryptosystem"

Connected through hyperedge HE-2 (induced by source paper "information set decoding of lee metric codes over finite rings"):
  with members:
    - "information set decoding in the lee metric with applications to cryptography"
    - "generalization of the ball collision algorithm"

Connected through hyperedge HE-3 (induced by source paper "decoding high order interleaved rank metric codes"):
  with members:
    - "on error decoding of locally repairable and partial mds codes"
    - "on decoding and applications of interleaved goppa codes"
    - "improved power decoding of interleaved one point hermitian codes"
    - "on a rank metric code based cryptosystem with small key size"
    - "a public key cryptosystem from interleaved goppa codes"
    - "repairing the faure loidreau public key cryptosystem"
    - "fast multiplication for skew polynomials"
    - "new criteria for mrd and gabidulin codes and some rank metric code constructions"

Connected through hyperedge HE-4 (induced by source paper "interleaving loidreau s rank metric cryptosystem"):
  with members:
    - "low rank parity check codes new decoding algorithms and applications to cryptography"
    - "on the security of a loidreau s rank metric code based encryption scheme"
    - "decoding high order interleaved rank metric codes"
    - "on decoding and applications of interleaved goppa codes"
    - "a public key cryptosystem from interleaved goppa codes"
    - "on the genericity of maximum rank distance and gabidulin codes"
    - "repairing the faure loidreau public key cryptosystem"
    - "further generalisations of twisted gabidulin codes"

Connected through hyperedge HE-5 (induced by source paper "randomized decoding of gabidulin codes beyond the unique decoding radius"):
  with members:
    - "on the list decodability of rank metric codes"
    - "ramesses a rank metric encryption scheme with short keys"
    - "an algebraic attack on rank metric code based cryptosystems"
    - "polynomial time key recovery attack on the faure loidreau scheme based on gabidulin codes"
    - "some gabidulin codes cannot be list decoded efficiently at any radius"
    - "bounds on list decoding of rank metric codes"
    - "a basis for all solutions of the key equation for gabidulin codes"
    - "a rank metric approach to error control in random network coding"

Connected through hyperedge HE-6 (induced by source paper "improved veron identification and signature schemes in the rank metric"):
  with members:
    - "wave a new code based signature scheme"
    - "ranksign an efficient signature algorithm based on the rank metric"
    - "efficient encryption from random quasi cyclic codes"
    - "new algorithms for decoding in the rank metric and an attack on the lrpc cryptosystem"
    - "a new algorithm for solving ring lpn with a reducible polynomial"
    - "a new zero knowledge code based identification scheme with reduced communication"
    - "properties of codes in rank metric"

Connected through hyperedge HE-7 (induced by source paper "low rank parity check codes new decoding algorithms and applications to cryptography"):
  with members:
    - "ranksynd a prng based on rank metric"
    - "new algorithms for decoding in the rank metric and an attack on the lrpc cryptosystem"
    - "security and complexity of the mceliece cryptosystem based on quasi cyclic low density parity check codes"
    - "cryptanalysis of two mceliece cryptosystems based on quasi cyclic codes"
    - "properties of codes in rank metric"

Connected through hyperedge HE-8 (induced by source paper "an algebraic attack on rank metric code based cryptosystems"):
  with members:
    - "two attacks on rank metric code based schemes ranksign and an identity based encryption scheme"
    - "ranksign an efficient signature algorithm based on the rank metric"
    - "improved cryptanalysis of rank metric schemes based on gabidulin codes"
    - "powers of tensors and fast matrix multiplication"

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)