一种AES算法中S盒和逆S盒替换的表达式方法
An Expression Method to Implement S-Box and Inverse S-Box Substitution for AES Algorithm
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摘要: S盒替换与逆S盒替换是A ES算法性能的主要瓶颈，它直接影响A ES芯片的运算速度.在优化Q-M化简法基础上，提出了一种实现A ES算法中S盒替换和逆S盒替换的表达式方法，这种表达式方法相比于普遍使用的查表法，其延时减小了8.5%，面积减小了27.4%，功耗减小了17%.Abstract: S-Box substitution and inverse S-Box substitution are the major bottleneck for AES algorithm,which directly affect the speed of AES chip.On the basis of optimizing Q-M simplifying method,this paper proposes an expression method to implement the S-Box substitution and inverse S-Box substitution in AES algorithm.Compared with the widespread use of the look-up-table method,the expression method can reduce the delay,area and power of circuit by 8.5%,27.4% and 17% respectively.
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