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 "pacstack an authenticated call stack"):
  Abstract: A popular run-time attack technique is to compromise the control-flow integrity of a program by modifying function return addresses on the stack. So far, shadow stacks have proven to be essential for comprehensively preventing return address manipulation. Shadow stacks record return addresses in integrity-protected memory, secured with hardware-assistance or software access control. Software shadow stacks incur high overheads or trade off security for efficiency. Hardware-assisted shadow stacks are efficient and secure, but require the deployment of special-purpose hardware. #R##N#We present authenticated call stack (ACS), an approach that uses chained message authentication codes (MACs) to achieve comparable security without requiring additional hardware support. We present PACStack, a realization of ACS on the ARMv8.3-A architecture, using its general purpose hardware mechanism for pointer authentication (PA). Via a rigorous security analysis, we show that PACStack achieves security comparable to hardware-assisted shadow stacks without requiring dedicated hardware. We demonstrate that PACStack's performance overhead is negligible (<1%).

Includes members:
  Member "dr sgx automated and adjustable side channel protection for sgx using data location randomization":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "on the convergence of artificial intelligence and distributed ledger technology a scoping review and future research agenda")
  Member "pac it up towards pointer integrity using arm pointer authentication":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "using name confusion to enhance security")
  Member "shining light on shadow stacks":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "libmpk software abstraction for intel memory protection keys")
  Member "cfi care hardware supported call and return enforcement for commercial microcontrollers":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "using name confusion to enhance security")
  Member "cryptographically enforced control flow integrity":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "gpt conjecture understanding the trade offs between granularity performance and timeliness in control flow integrity")

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)