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 "sok hardware security support for trustworthy execution"):
  Abstract: In recent years, there have emerged many new hardware mechanisms for improving the security of our computer systems. Hardware offers many advantages over pure software approaches: immutability of mechanisms to software attacks, better execution and power efficiency and a smaller interface allowing it to better maintain secrets. This has given birth to a plethora of hardware mechanisms providing trusted execution environments (TEEs), support for integrity checking and memory safety and widespread uses of hardware roots of trust. #R##N#In this paper, we systematize these approaches through the lens of abstraction. Abstraction is key to computing systems, and the interface between hardware and software contains many abstractions. We find that these abstractions, when poorly designed, can both obscure information that is needed for security enforcement, as well as reveal information that needs to be kept secret, leading to vulnerabilities. We summarize such vulnerabilities and discuss several research trends of this area.

Includes members:
  Member "secloak arm trustzone based mobile peripheral control":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "on the performance of arm trustzone")
  Member "reverse engineering x86 processor microcode":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "cachequery learning replacement policies from hardware caches")
  Member "extracting secrets from encrypted virtual machines":
    also connected through other hyperedges:
      (none)
  Member "sgxpectre stealing intel secrets from sgx enclaves via speculative execution":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "distributed systems and trusted execution environments trade offs and challenges")
  Member "spectre attacks exploiting speculative execution":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "towards probabilistic verification of machine unlearning")
  Member "pac it up towards pointer integrity using arm pointer authentication":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "using name confusion to enhance security")
  Member "lord of the x86 rings a portable user mode privilege separation architecture on x86":
    also connected through other hyperedges:
      (none)
  Member "severed subverting amd s virtual machine encryption":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "insecure until proven updated analyzing amd sev s remote attestation")

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)