Cryptology ePrint Archive: Report 2018/357

Statistical Ineffective Fault Attacks on Masked AES with Fault Countermeasures

Christoph Dobraunig and Maria Eichlseder and Hannes Gross and Stefan Mangard and Florian Mendel and Robert Primas

Abstract: Implementation attacks like side-channel and fault attacks are a threat for deployed devices especially if an attacker has physical access to a device. As a consequence, devices like smart cards usually provide countermeasures against implementation attacks, such as masking against side-channel attacks and detection-based countermeasures like temporal redundancy against fault attacks. In this paper, we show how to attack implementations protected with both masking and detection-based fault countermeasures by using statistical ineffective fault attacks using a single fault induction per execution. Our attacks are largely unaffected by the deployed protection order of masking and the level of redundancy of the detection-based countermeasure. Our observations refute the intuition that masking is a viable countermeasure against biased faults, statistical fault attacks, or statistical ineffective fault attacks.

Category / Keywords: secret-key cryptography / Implementation attack, Fault attack, SFA, SIFA

Date: received 16 Apr 2018

Contact author: robert primas at iaik tugraz at

Available format(s): PDF | BibTeX Citation

Version: 20180418:203117 (All versions of this report)

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