On Comparing Side-channel Properties of AES and ChaCha20 on Microcontrollers

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On Comparing Side-channel Properties of AES and ChaCha20 on Microcontrollers

Conference Paper (2018)

Author(s)

Zakaria Najm (Nanyang Technological University, TU Delft - Cyber Security)

Dirmanto Jap (Nanyang Technological University)

Bernhard Jungk (Independent researcher)

Stjepan Picek (TU Delft - Cyber Security)

Shivam Bhasin (Nanyang Technological University)

Machine learning Cryptography Automotive Side-Channel Attack

DOI related publication

https://doi.org/10.1109/APCCAS.2018.8605653 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:ee101899-cce4-4315-b893-aa6a4540e3d0

More Info

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Publication Year

2018

Language

English

Pages (from-to)

552-555

ISBN (print)

978-1-5386-8241-8

ISBN (electronic)

978-1-5386-8240-1

Event

Downloads counter

243

Abstract

Side-channel attacks are a real threat to many secure systems. In this paper, we consider two ciphers used in the automotive industry – AES and ChaCha20 and we evaluate their resistance against side-channel attacks. In particular, the focus is laid upon the main non-linear component in these ciphers. Owing to the design of ChaCha20, it offers natural timing side-channel resistance and thus is suitable for affected applications. However, attacks exploiting the power side-channel are somewhat more difficult on ChaCha20 as compared to AES, but the overhead to protect ChaCha20 against such attack is considerably higher.