1. On the primitivity of the AES-128 key-schedule.
- Author
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Aragona, Riccardo, Civino, Roberto, and Volta, Francesca Dalla
- Subjects
GENERATING functions - Abstract
The key-scheduling algorithm in the AES is the component responsible for selecting from the master key the sequence of round keys to be xor-ed to the partially encrypted state at each iteration. We consider here the group Γ generated by the action of the AES-128 key-scheduling operation, and we prove that the smallest group containing Γ and all the translations of the message space is primitive. As a consequence, we obtain that no linear partition of the message space can be invariant under its action. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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