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 wireless system using random residue sequences"):
  Abstract: This paper describes the architecture of wireless communication system using random residue sequences. The basic scheme is that of spread spectrum but instead of using PN sequences for coding, we use random residue sequences. Such a system can provide cryptographic security whose strength would depend on the number of code sequences being used.

Includes members:
  Member "random residue sequences and the number theoretic hilbert transform":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a new result on the random residue sequence algorithm")
  Member "a key set cipher for wireless sensor networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "survey of key distribution schemes for wireless sensor networks")
  Member "randomness of d sequences via diehard testing":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "new class of pseudorandom d sequences to generate cryptographic keys")
  Member "the number theoretic hilbert transform":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a new result on the random residue sequence algorithm")
  Member "watermarking using decimal sequences":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a class of random sequences for key generation")

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)