【摘要】 S盒在AES中占有至关重要的地位,在AES的硬件实现过程中,S盒的实现直接决定了它的性能和实现代价。传统实现方法是利用查表的方法,这种实现方法经综合工具处理后,利用率只有25%左右,实现性能很低。给出了高级加密标准的S盒的一种硬件实现,用纯逻辑算法实现了S盒。这种实现方法与一般的查表实现方法相比较,版图时的利用率大大提高,一般用该方法可以到达70%。更多还原

【Abstract】 Sbox is the most important part of the advanced encryption standard.The implementation of the Sbox determines the per-formance of the AES.Usually,look-up-table method is used in implementation of Sbox.But the utilization of placement of the method is very low.A hardware implementation of the S-Boxes from the advanced encryption standard(AES) is presented.The SBoxes substitute an 8-bit input for 8-bit output and are based on operation in the finite field GF(2m).The result show that a calculation of this function with combinational logic.Compared to traditional methods,the method increases the utilization of placement from 25% to 75%.更多还原