Linear Cryptanalysis of Modified SAFER + Algorithm

Authors

  • Melsik K. Kyureghyan Institute for Informatics and Automation Problems of NAS RA
  • Knarik M. Kyuregyan Institute for Informatics and Automation Problems of NAS RA

Keywords:

Block cipher, Linear cryptanalysis, Balanced function

Abstract

In paper [1] a modified SAFER+ [2] algorithm was presented. It was shown that those modifications made it possible to speed up a modified algorithm implementation about 1,7 times and obtain the same security level as compared with SAFER+ in terms of differential analysis. In this paper a linear cryptanalysis of modified SAFER+ algorithm is presented and it is shown that it has the same resistance against linear cryptanalysis as compared with an original SAFER+.

References

K. Kyuregyan, “Some Modifications of SAFER+”, In Reports of NAS RA, vol. 115, no 1, pp. 33--39, Yerevan, Armenia, 2015.

J. L. Massey, G. Khachatrian and M Kyuregian, “Nomination of SAFER+ as candidate algorithm for the advanced encryption standard”, (AES). NIST AES Proposal, 1998.

Carlo H.: Cryptanalysis of iterated Block Ciphers, ETH Series In Information Processing (Ed Massey), v. 7, Konstanz: Hartung-Gorre Verlag, 1996.

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Published

2021-12-10

How to Cite

Kyureghyan, M. K., & Kyuregyan, K. M. . (2021). Linear Cryptanalysis of Modified SAFER + Algorithm. Mathematical Problems of Computer Science, 45, 111–121. Retrieved from http://mpcs.sci.am/index.php/mpcs/article/view/174

Issue

Vol. 45 (2016): Mathematical Problems of Computer Science

Section

Articles

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.