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Start Over Author "Aragona, Riccardo" Journal journal of discrete mathematical sciences & cryptography
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1. A note on an infeasible linearization of some block ciphers.

Author

Aragona, Riccardo, Rimoldi, Anna, and Sala, Massimiliano

Subjects
*BLOCK ciphers, *VECTOR spaces, *DATA encryption
Abstract

A block cipher can be easily broken if its encryption functions can be seen as linear maps on a small vector space. Even more so, if its round functions can be seen as linear maps on a small vector space. We show that this cannot happen for the AES. More precisely, we prove that if the AES round transformations can be embedded into a linear cipher acting on a vector space, then this space is huge-dimensional and so this embedding is infeasible in practice. We present two elementary proofs. [ABSTRACT FROM AUTHOR]

Published
2018
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