<abstract xmlns="http://www.w3.org/1999/xhtml">In this paper we study two-round key-alternating block ciphers with round function <italic>f</italic> (<italic>x</italic>)= <italic>x</italic>(2<italic>t</italic>+1)2<italic>s</italic>, where <italic>t, s</italic> are positive integers. An algorithm to compute the distribution weight in respect to input and output masks is described. Also, in the case <italic>t</italic> = 1 the correlation distributions depending on input and output masks are completely determined for arbitrary pairs of masks.</abstract>

In this paper we study two-round key-alternating block ciphers with round function f (x)= x(2t+1)2s, where t, s are positive integers. An algorithm to compute the distribution weight in respect to input and output masks is described. Also, in the case t = 1 the correlation distributions depending on input and output masks are completely determined for arbitrary pairs of masks.

Correlation Distribution Analysis of a Two-Round Key-Alternating Block Cipher

Tatra Mountains Mathematical Publications

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Correlation Distribution Analysis of a Two-Round Key-Alternating Block Cipher"}

In this paper we study two-round key-alternating block ciphers with round function f (x)= x(2t+1)2s, where t, s are positive integers. An algorithm to compute...

Correlation Distribution Analysis of a Two-Round Key-Alternating Block Cipher

Published Online: Aug 15, 2019

Page range: 109 - 130

Received: Feb 20, 2019

DOI: https://doi.org/10.2478/tmmp-2019-0009

Keywords
correlation distribution, linear cryptanalysis, key-alternating ciphers

© 2019 Liliya Kraleva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Correlation Distribution Analysis of a Two-Round Key-Alternating Block Cipher

Published Online: Aug 15, 2019

Page range: 109 - 130

Received: Feb 20, 2019

DOI: https://doi.org/10.2478/tmmp-2019-0009

Keywordscorrelation distribution, linear cryptanalysis, key-alternating ciphers

© 2019 Liliya Kraleva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
correlation distribution, linear cryptanalysis, key-alternating ciphers