Contactless Electromagnetic Active Attack on Ring Oscillator Based True Random Number Generator

Abstract : True Random Number Generators (TRNGs) are ubiquitous in data security as one of basic cryptographic primitives. They are primarily used as generators of confidential keys, initialization vectors, padding values, but also as random masks generators in side channel attacks countermeasures. As such, they must have good statistical properties, be unpredictable and robust against attacks. %Surprisingly, few academic studies are focused on TRNG attacks. This paper presents new contactless and locally orientable active attack on ring oscillator (RO) based TRNGs using electromagnetic fields. It demonstrates clearly that the attack impacts significantly the RO behavior. Experiments show that in a TRNG featuring two ROs, the impact of the local electromagnetic emanation on oscillations of the ROs is so strong, that it is possible to lock the ROs on the injected signal even when low power electromagnetic fields are exploited. These results confirm practically that the electromagnetic waves used for harmonic signal injection represents serious security threat for secure circuits that embed RO-based TRNG.
Type de document :
Communication dans un congrès
COSADE'2011: Constructive Side-Channel and Secure Design, Feb 2011, Darmstadt, Germany. pp.151-156, 2011, 〈http://cosade2011.cased.de/〉
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-00761824
Contributeur : Philippe Maurine <>
Soumis le : jeudi 6 décembre 2012 - 10:51:32
Dernière modification le : jeudi 11 janvier 2018 - 06:27:19

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  • HAL Id : lirmm-00761824, version 1

Citation

Philippe Maurine, Pierre Bayon, Lilian Bossuet, Alain Aubert, Viktor Fischer, et al.. Contactless Electromagnetic Active Attack on Ring Oscillator Based True Random Number Generator. COSADE'2011: Constructive Side-Channel and Secure Design, Feb 2011, Darmstadt, Germany. pp.151-156, 2011, 〈http://cosade2011.cased.de/〉. 〈lirmm-00761824〉

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