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 "assuring automotive data and software integrity employing distributed hash tables and blockchain"):
  Abstract: Automotive software is increasingly complex and critical to safe vehicle operation, and related embedded systems must remain up-to-date to ensure long-term system performance. Update mechanisms introduce opportunities for malicious actors to compromise these cyber-physical systems, and for trusted actors to accidentally install incompatible software versions. An automotive software and data provenance mechanism is proposed to assure users, service providers, and original equipment manufacturers (OEMs) of vehicular software integrity and reliability. The proposed approach employs the use of distributed hash tables (DHT) and a public blockchain to provide high assurance, scalability, and efficiency.

Includes members:
  Member "secure ota software updates in connected vehicles a survey":
    also connected through other hyperedges:
      (none)
  Member "block4forensic an integrated lightweight blockchain framework for forensics applications of connected vehicles":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "blockchain for the internet of things present and future")
  Member "blockchain based trust authentication for decentralized sensor networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "anchoring the value of cryptocurrency")
  Member "blockchain a distributed solution to automotive security and privacy":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "creating efficient blockchains for the internet of things by coordinated satellite terrestrial networks")

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)