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DOE OSTI · 1646972

Side Channel Considerations for AES Intermediate Rounds

Cordwell, William R.
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Abstract

We illustrate a theoretical side-channel analysis on the intermediate rounds of AES, using only the Hamming weights of the bytes registered after the S-box operation. Input and output state values are unknown. Simulations and a blind test were used to show the feasibility of the analysis under ideal conditions. General applicability of the idea and possible extensions are discussed, as well as limiting assumptions. Some implementation approaches are described in Appendix A, in the case of constrained computing capabilities (desktop or laptop).

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97 MATHEMATICS AND COMPUTING

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Cordwell, William R.. 2020-06-01. Side Channel Considerations for AES Intermediate Rounds. https://doi.org/10.2172/1646972

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