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Paper 2021/1124

A Semi-Permanent Stuck-At Fault Analysis on AES Rijndael SBox

Priyanka Joshi and Bodhisatwa Mazumdar

Abstract

Fault attacks have gained particular attention in recent years as they present a severe threat to security in rapidly rising Internet-of-Things (IoT) devices. IoT devices are generally security-critical and resource-constrained. Therefore, any security protocol deployed in these devices has to satisfy several constraints such as small area footprint, low power, and memory consumption. Combinational circuit implementation of S-box is preferable over look-up table (LUT) in terms of memory consumption as the memory operations are usually the costliest part of lightweight cipher implementations. In this work, we analyze the S-box of AES against a novel fault analysis technique, Semi-Permanent Stuck-At (SPSA) fault analysis. We pinpoint hotspots in an optimized implementation of AES S-box that weaken the cryptographic properties of the S-box, leading to key recovery attacks. Our work investigates new vulnerabilities towards fault analysis in combinational circuit implementation.

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Preprint. MINOR revision.
Keywords
Fault attacksAESLightweight ciphersCombinational circuitSemi-permanentStuck-at.
Contact author(s)
phd1801201001 @ iiti ac in
bodhisatwa @ iiti ac in
History
2021-09-06: received
Short URL
https://ia.cr/2021/1124
License
Creative Commons Attribution
CC BY
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