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 "lattice codes for the gaussian wiretap channel"):
  Abstract: It has been shown recently that coding for the Gaussian Wiretap Channel can be done with nested lattices. A fine lattice intended to the legitimate user must be designed as a usual lattice code for the Gaussian Channel, while a coarse lattice is added to introduce confusion at the eavesdropper, whose theta series must be minimized. We study, here, the behavior of this invariant for a class of lattices.

Includes members:
  Member "achieving the secrecy capacity of wiretap channels using polar codes":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "explicit codes for the wiretap channel a unified design framework")
  Member "secrecy achieving polar coding for binary input memoryless symmetric wire tap channels":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "greedy merge degrading has optimal power law")
  Member "unimodular lattices for the gaussian wiretap channel":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "on the secrecy gain of ell modular lattices")
  Member "secrecy gain a wiretap lattice code design":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a survey of physical layer security techniques for 5g wireless networks and challenges ahead")
  Member "providing secrecy with structured codes tools and applications to two user gaussian channels":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "towards an algebraic network information theory simultaneous joint typicality decoding")
  Member "on wiretap networks ii":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "universally weakly secure coset coding schemes for minimum storage regenerating msr codes")
  Member "golden space time trellis coded modulation":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "golden coded index coding")
  Member "applications of ldpc codes to the wiretap channel":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "explicit codes for the wiretap channel a unified design framework")

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.IT(Information Theory)