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IEICE TRANSACTIONS on Fundamentals

On the Signal-to-Noise Ratio for Boolean Functions

Yu ZHOU, Wei ZHAO, Zhixiong CHEN, Weiqiong WANG, Xiaoni DU

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Summary :

The notion of the signal-to-noise ratio (SNR), proposed by Guilley, et al. in 2004, is a property that attempts to characterize the resilience of (n, m)-functions F=(f1,...,fm) (cryptographic S-boxes) against differential power analysis. But how to study the signal-to-noise ratio for a Boolean function still appears to be an important direction. In this paper, we give a tight upper and tight lower bounds on SNR for any (balanced) Boolean function. We also deduce some tight upper bounds on SNR for balanced Boolean function satisfying propagation criterion. Moreover, we obtain a SNR relationship between an n-variable Boolean function and two (n-1)-variable decomposition functions. Meanwhile, we give SNR(fg) and SNR(fg) for any balanced Boolean functions f, g. Finally, we give a lower bound on SNR(F), which determined by SNR(fi) (1≤im), for (n, m)-function F=(f1,f2,…,fm).

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.12 pp.1659-1665
Publication Date
2020/12/01
Publicized
2020/05/25
Online ISSN
1745-1337
DOI
10.1587/transfun.2020EAL2037
Type of Manuscript
LETTER
Category
Cryptography and Information Security

Authors

Yu ZHOU
  the Science and Technology on Communication Security Laboratory
Wei ZHAO
  the Science and Technology on Communication Security Laboratory
Zhixiong CHEN
  Putian University
Weiqiong WANG
  Chang'an University
Xiaoni DU
  Northwest Normal University

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