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Differential attacks: using alternative operations.
- Source :
- Designs, Codes & Cryptography; Mar2019, Vol. 87 Issue 2/3, p225-247, 23p
- Publication Year :
- 2019
-
Abstract
- Is it possible that a block cipher apparently immune to classical differential cryptanalysis can be attacked considering a different operation on the message space? Recently Calderini and Sala showed how to effectively compute alternative operations on a vector space which can serve as message space for a block cipher such that the resulting structure is still a vector space. The latter were used to mount a linearisation attack against a toy cipher. Here we investigate how alternative operations interact with the layers of a substitution-permutation network and show how they influence the differential probabilities, when the difference taken into consideration is different from the usual bit-wise addition modulo two. Furthermore, we design a block cipher which appears to be secure with respect to classical differential cryptanalysis, but weaker with respect to our attack which makes use of alternative operations. [ABSTRACT FROM AUTHOR]
- Subjects :
- BLOCK ciphers
CRYPTOGRAPHY
PERMUTATIONS
VECTOR spaces
PROBABILITY theory
Subjects
Details
- Language :
- English
- ISSN :
- 09251022
- Volume :
- 87
- Issue :
- 2/3
- Database :
- Complementary Index
- Journal :
- Designs, Codes & Cryptography
- Publication Type :
- Academic Journal
- Accession number :
- 134674176
- Full Text :
- https://doi.org/10.1007/s10623-018-0516-z