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Computer Science > Cryptography and Security

arXiv:2209.07936 (cs)
[Submitted on 16 Sep 2022 (v1), last revised 25 Apr 2024 (this version, v2)]

Title:PA-Boot: A Formally Verified Authentication Protocol for Multiprocessor Secure Boot

Authors:Zhuoruo Zhang, Chenyang Yu, Rui Chang, Mingshuai Chen, Bo Feng, He Huang, Qinming Dai, Wenbo Shen, Yongwang Zhao
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Abstract:Hardware supply-chain attacks are raising significant security threats to the boot process of multiprocessor systems. This paper identifies a new, prevalent hardware supply-chain attack surface that can bypass multiprocessor secure boot due to the absence of processor-authentication mechanisms. To defend against such attacks, we present PA-Boot, the first formally verified processor-authentication protocol for secure boot in multiprocessor systems. PA-Boot is proved functionally correct and is guaranteed to detect multiple adversarial behaviors, e.g., processor replacements, man-in-the-middle attacks, and tampering with certificates. The fine-grained formalization of PA-Boot and its fully mechanized security proofs are carried out in the Isabelle/HOL theorem prover with 306 lemmas/theorems and ~7,100 LoC. Experiments on a proof-of-concept implementation indicate that PA-Boot can effectively identify boot-process attacks with a considerably minor overhead and thereby improve the security of multiprocessor systems.
Subjects: Cryptography and Security (cs.CR); Hardware Architecture (cs.AR)
Cite as: arXiv:2209.07936 [cs.CR]
  (or arXiv:2209.07936v2 [cs.CR] for this version)
  https://doi.org/10.48550/arXiv.2209.07936

Submission history

From: Zhuoruo Zhang [view email]
[v1] Fri, 16 Sep 2022 13:54:43 UTC (8,674 KB)
[v2] Thu, 25 Apr 2024 03:04:32 UTC (2,268 KB)
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