关键词: 立方攻击, 迭代, KATAN32算法

Abstract: Due to various reasons, cube attack cannot usually find enough linear expressions of key bits in practical cryptanalysis. Based on the idea of iterative, the paper puts forward an enhanced cube attack named cube attack with iterating. The experimental results of applying this method to 55 rounds variant of block cipher KATAN32 show that this method is much more effective than those before with lower data complexity and lower time complexity.

Key words: cube attacks, iterate, KATAN32 algorithm