Cryptology ePrint Archive: Report 2006/272

Efficient Use of Random Delays

Olivier Benoit and Michael Tunstall

Abstract: Random delays are commonly used as a countermeasure to inhibit side channel analysis and fault attacks in embedded devices. This paper proposes a different manner of generating random delays. The alternative proposed increases the desynchronisation compared to uniformly distributed random delays. It is also shown that it is possible to reduce the amount of time lost due to random delays, while maintaining the increased variation.

Category / Keywords: implementation /

Date: received 14 Aug 2006

Contact author: mike tunstall at yahoo co uk

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Version: 20060815:200427 (All versions of this report)

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