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Title:
Improved Differential Analysis of Block Cipher PRIDE
Authors: Qianqian Yang, Lei Hu, Siwei Sun, Kexin Qiao, Ling Song, Jinyong Shan, Xiaoshuang Ma
Abstract:In CRYPTO 2014 Albrecht \emph{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 \emph{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.
ePrint: https://eprint.iacr.org/2014/978
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