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Communication Dans Un Congrès Année : 2021

On Conditional alpha-Information and its Application to Side-Channel Analysis

Résumé

A conditional version of Sibson's α-information is defined using a simple closed-form "log-expectation" expression, which satisfies important properties such as consistency, uniform expansion, and data processing inequalities. This definition is compared to previous ones, which in contrast do not satisfy all of these properties. Based on our proposal and on a generalized Fano inequality, we extend the case α = 1 of previous works to obtain sharp universal upper bounds for the probability of success of any type side-channel attack, particularly when α = 2.
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Dates et versions

hal-03323522 , version 1 (15-09-2021)

Identifiants

  • HAL Id : hal-03323522 , version 1

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Yi Liu, Wei Cheng, Sylvain Guilley, Olivier Rioul. On Conditional alpha-Information and its Application to Side-Channel Analysis: On Conditional α-Information and its Application to Side-Channel Analysis. 2021 IEEE Information Theory Workshop (ITW2021), Oct 2021, Kanazawa, Japan. ⟨hal-03323522⟩
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