Performance Evaluation of Elliptic Curve Libraries on Automotive-Grade Microcontrollers

As cryptography is quickly entering the automotive domain, public-key cryptographic functions are a vital building block and are part of recent industry-proposed standards. Elliptic curves provide a more compact representation for public/private keys making them more suitable for embedded devices with limited amounts of memory. Nonetheless, they provide more compact signatures and open road for identity-based cryptographic primitives by exploiting the flexibility of bilinear pairings. In this work we carry a performance evaluation on some modern libraries, e.g., MIRACL, RELIC, and compare them to the more classical WolfSSL. The evaluation is carried on a state-of-the-art representative controller from the automotive industry, i.e., a 32 bit Infineon TC297. Having a crisper image on computational requirements is relevant for future automotive and industrial applications.

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