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A note on an infeasible linearization of some block ciphers.
- Source :
-
Journal of Discrete Mathematical Sciences & Cryptography . Feb2018, Vol. 21 Issue 1, p209-218. 10p. - Publication Year :
- 2018
-
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]
- Subjects :
- *BLOCK ciphers
*VECTOR spaces
*DATA encryption
Subjects
Details
- Language :
- English
- ISSN :
- 09720529
- Volume :
- 21
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Discrete Mathematical Sciences & Cryptography
- Publication Type :
- Academic Journal
- Accession number :
- 128549834
- Full Text :
- https://doi.org/10.1080/09720529.2016.1197598