Let’s make it Noisy: A Simulation Methodology for adding Intrinsic Physical Noise to Cryptographic Designs

Nawaz, Kashif;Van Brandt, Léopold;Standaert, François-Xavier;Flandre, Denis
(2018) 14th Conference on PhD Research in Microelectronics and Electronics — Location: Prague (Czech Republic) (2.July.2018)

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Noise in digital circuits for the sake of performance has always been minimized in typical designs. However, for cryptographic applications, increased noise could be beneficial. It can be used effectively to reduce the mathematical SNR (signal-to-noise ratio) further and make it more difficult for the adversary to gather useful information from the side channel leakage data. In this paper, we introduce a methodology to exploit the intrinsic physical noise (i.e. flicker and thermal noise) at the circuit level and use the obtained values in a relevant cryptographic context. Our simulations show that the calculated cryptographic noise values are in close agreement with the noise levels extracted from noisy distributions using transient noise analysis. Consequently, this noise is shown to increase with the number of transistors or the supply voltage.
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Nawaz, K., Van Brandt, L., Standaert, F.-X., & Flandre, D. (2018). Let’s make it Noisy: A Simulation Methodology for adding Intrinsic Physical Noise to Cryptographic Designs. 14th Conference on PhD Research in Microelectronics and Electronics, Prague (Czech Republic). https://hdl.handle.net/2078.5/225515