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Published in:
2015 | OriginalPaper | Chapter
Improved Differential Analysis of Block Cipher PRIDE
Authors : Qianqian Yang, Lei Hu, Siwei Sun, Kexin Qiao, Ling Song, Jinyong Shan, Xiaoshuang Ma
Published in: Information Security Practice and Experience
Publisher: Springer International Publishing
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In CRYPTO 2014 Albrecht
et al.
brought in a 20-round iterative lightweight block cipher PRIDE which is based on a good linear layer for achieving a tradeoff between security and efficiency. A recent analysis is presented by Zhao
et al.
Inspired by their work, we use an automatic search method to find out 56 iterative differential characteristics of PRIDE, containing 24 1-round iterative characteristics, based on three of them we construct a 15-round differential and perform a differential attack on the 19-round PRIDE, with data, time and memory complexity of 2
62
, 2
63
and 2
71
respectively.