分组密码AES的优化与设计  

OPTIMIZATION AND DESIGN OF BLOCK CIPHER AES

作　　者：刘宇峰 许向阳[1] 苏浩 耿艳香[2] 刘婷[2] Liu Yufeng;Xu Xiangyang;Su Hao;Geng Yanxiang;Liu Ting(School of Information Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050000,Hebei,China;School of Information and Engineering,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050000 [2]天津商业大学信息工程学院,天津300134

出　　处：《计算机应用与软件》2020年第1期267-270,297,共5页Computer Applications and Software

基　　金：天津市企业科技特派员项目(18JCTPJC66900)

摘　　要：AES是现有的一种抗攻击能力强、加密速度快以及可移植性好的加密算法。在FPGA上实现AES算法可以更快地处理数据。为了提高整体系统的运行速度,在优化设计中采用全流水的技术来实现算法,并对S-box进行优化。S-box是AES算法中唯一的非线性单元,在进行加密、解密尤其是在字节替换过程时,需要分别执行S-box和逆S-box,一般使用查表来进行操作,这样会占用大量的资源,所以对S-box进行优化是对整个算法优化的最重要的步骤。最终使用Modelsim对设计结果进行仿真然后使用Quartus进行总体综合。AES is an existing encryption algorithm with strong anti-attack capability,fast encryption speed and good portability.Implementing AES algorithms on FPGA can process data faster.In order to improve the operating speed of the overall system,we adopt a full-flow technology to implement the algorithm in the process of optimization and design.We optimized the S-box.S-box was the only nonlinear unit in AES algorithm.In the process of encryption and decryption,especially in the byte replacement process,it was necessary to separately execute the S-box and the inverse S-box.Generally,the look-up table was used to do the operation,which occupied a large amount of resources,so optimizing the S-box was the most important step in optimizing the entire algorithm.Modelsim was applied to simulate the design results and Quartus was used for synthesis.

关 键 词：S盒 FPGA 高级加密算法 全流水 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]