International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 13 August 2019

Wei Cheng, Claude Carlet, Kouassi Goli, Sylvain Guilley, Jean-Luc Danger
ePrint Report ePrint Report
Side-channel analysis and fault injection attacks are two typical threats to cryptographic implementations, especially in modern embedded devices. Thus there is an insistent demand for dual side-channel and fault injection protections. As it is known, masking is a kind of provable countermeasure against side-channel attacks. Recently, inner product masking (IPM) was proposed as a promising higher-order masking scheme against side-channel analysis, but not for fault injection attacks. In this paper, we devise a new masking scheme named IPM-FD. It is built on IPM, which enables fault detection. This novel masking scheme has three properties: the security orders in the word-level probing model, bit-level probing model, and the number of detected faults. IPM-FD is proven secure both in the word-level and in the bit-level probing models, and allows for end-to-end fault detection against fault injection attacks.

Furthermore, we illustrate its security order by interpreting IPM-FD as a coding problem then linking it to one defining parameters of linear code, and show its implementation cost by applying IPM-FD to AES-128.
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