Cryptology ePrint Archive: Report 2020/026

Post-Quantum Secure Architectures for Automotive Hardware Secure Modules

Wen Wang and Marc Stöttinger

Abstract: The rapid development of IT in the automotive industry has driven increasing requirements on incorporating security functionalities in the in-vehicle architecture, which is usually realized by adding a Hardware Secure Module (HSM) in the Electronic Central Unit (ECU). Therefore, secure communications can be enforced by carrying out secret cryptographic computations within the HSM by use of the embedded hardware accelerators. However, there is no common standard for designing the architecture for an HSM. A future design of a common automotive HSM is desired by the automotive industry which not only fits to the increasing performance demand, but also further defends against future attacks by attackers exploiting large-scale quantum computers. The arrival of future quantum computers motivates the investigation into post-quantum cryptography (PQC), which will retain the security of an HSM in the future. We analyzed the candidates in NIST’s PQC standardization process, and proposed new sets of hardware accelerators for the future generation of the automotive HSMs. Our evaluation results show that building a post-quantum secure automotive HSM is feasible and can meet the hard requirements imposed by a modern vehicle ECU.

Category / Keywords: applications / Post-Quantum Cryptography, Hardware Security Module, ECU, Automotive, FPGA

Date: received 8 Jan 2020, last revised 12 Jan 2020

Contact author: wen wang ww349 at yale edu

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Version: 20200112:171213 (All versions of this report)

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