Improving the Rectangle Attack on GIFT-64

ePrint Report: Improving the Rectangle Attack on GIFT-64

Yincen Chen, Nana Zhang, Xuanyu Liang, Ling Song, Qianqian Yang, Zhuohui Feng

GIFT is a family of lightweight block ciphers based on SPN structure and composed of two versions named GIFT-64 and GIFT-128. In this paper, we reevaluate the security of GIFT-64 against the rectangle attack under the related-key setting. Investigating the previous rectangle key recovery attack on GIFT-64, we obtain the core idea of improving the attack——trading off the time complexity …

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