Welcome to the resource topic for 2017/1082
Title:
Instruction Duplication: Leaky and Not Too Fault-Tolerant!
Authors: Lucian Cojocar, Kostas Papagiannopoulos, Niek Timmers
Abstract:Fault injection attacks alter the intended behavior of micro- controllers, compromising their security. These attacks can be mitigated using software countermeasures. A widely-used software-based solution to deflect fault attacks is instruction duplication and n-plication. We explore two main limitations with these approaches: first, we examine the effect of instruction duplication under fault attacks, demonstrating that as fault tolerance mechanism, code duplication does not provide a strong protection in practice. Second, we show that instruction duplication increases side-channel leakage of sensitive code regions using a multivariate exploitation technique both in theory and in practice.
ePrint: https://eprint.iacr.org/2017/1082
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