On probabilities of differential trails in the bash-f sponge function | Applied Discrete Mathematics. Supplement. 2019. № 12. DOI: 10.17223/2226308X/12/27

HomeIssuesOn probabilities of differential trails in the bash-f sponge function | Applied Discrete Mathematics. Supplement. 2019. № 12. DOI: 10.17223/2226308X/12/27

On probabilities of differential trails in the bash-f sponge function

We propose two methods to obtain lower bounds on the weights of differential trails in the Bash-f sponge function. Our bounds restrict the probabilities of the trails from above and can be used to justify the security of cryptographic algorithms based on Bash-f against differential attacks. For the full 24-round trails, our best bound on the probabilities is 2-386.

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Keywords

sponge-функция, S-блок, разностный криптоанализ, разностная траектория, sponge function, S-box, differential cryptanalysis, differential trail

Authors

NameOrganizationE-mail
Agievich S. V.Belarusian State Universityagievich@bsu.by
Maslau A. S.Belarusian State Universitymaslov@bsu.by
Yarashenya Yu. S.Belarusian State Universityyuliya_10.06@mail.ru
Всего: 3

References

Daemen J. and Van Assche G. Differential propagation analysis of Keccak // FSE'2012. LNCS. 2012. V. 7549. P. 422-441.
Mella S., Daemen J., and Van Assche G. New techniques for trail bounds and application to differential trails in Keccak // IACR Trans. Symmetric Cryptology. 2017. No. 1. P. 329-357.
Agievich S., Marchuk V., Maslau A., and Semenov V. Bash-f: another LRX sponge function // Математические вопросы криптографии. 2017. Т. 8. №2. С. 7-28.
On probabilities of differential trails in the bash-f sponge function | Applied Discrete Mathematics. Supplement. 2019. № 12. DOI: 10.17223/2226308X/12/27

On probabilities of differential trails in the bash-f sponge function | Applied Discrete Mathematics. Supplement. 2019. № 12. DOI: 10.17223/2226308X/12/27

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