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Be My Guesses: The interplay between side-channel leakage metrics.
- Source :
-
Microprocessors & Microsystems . Jun2024, Vol. 107, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- In a theoretical context of side-channel attacks, optimal bounds between success rate, guessing entropy and statistical distance are derived with a simple majorization (Schur-concavity) argument. They are further theoretically refined for different versions of the classical Hamming weight leakage model, in particular assuming a priori equiprobable secret keys and additive white Gaussian measurement noise. Closed-form expressions and numerical computation are given. A study of the impact of the choice of the substitution box with respect to side-channel resistance reveals that its nonlinearity tends to homogenize the expressivity of success rate, guessing entropy and statistical distance. The intriguing approximate relation between guessing entropy and success rate G E = 1 / S R is observed in the case of 8-bit bytes and low noise. The exact relation between guessing entropy, statistical distance and alphabet size G E = M + 1 2 − M 2 S D for deterministic leakages and equiprobable keys is proved. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ADDITIVE white Gaussian noise
*ENTROPY
*HAMMING weight
*LEAKAGE
Subjects
Details
- Language :
- English
- ISSN :
- 01419331
- Volume :
- 107
- Database :
- Academic Search Index
- Journal :
- Microprocessors & Microsystems
- Publication Type :
- Academic Journal
- Accession number :
- 177392363
- Full Text :
- https://doi.org/10.1016/j.micpro.2024.105045