AES改进算法在CCMP协议中的应用  

Improvement of the AES encryption algorithm and its application in CCMP protocol

作　　者：李京[1] 李永珍[1] 

机构地区：[1]延边大学工学院计算机科学与技术学科网络与信息安全研究室,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2015年第3期244-248,共5页Journal of Yanbian University（Natural Science Edition）

摘　　要：AES针对IEEE 802.11i中CCMP所采用的高级加密标准AES算法的实现较为复杂且对硬件要求较高的情况,对AES算法进行了优化改进.首先对列变换进行了优化,并基于系数的正交化统一了算法加解密过程的运算;然后对轮变换过程进行了简化,并将优化后的列变换系数应用于其中进一步简化了轮变换过程.将本文的改进算法与原AES算法和S-AES算法进行对比表明,本文算法在不降低算法本身安全性的前提下,减小了其实现代价,提高了算法的效率.In view of the Advanced Encryption Standard（AES）algorithm is hard to realize in the CCMP of IEEE 802.11 ibecause of its higher hardware requirements,based on this problem author optimize and improve the algorithm.Firstly,optimize the column transformation and unify the computation process of encryption and decryption base on the orthogonal of coefficient.Then to simplify the wheel transformation process,and apply optimized coefficient of column transformation in it to simplifying the process of wheel transformation.Finally,this paper algorithm compare with AES and S-AES shows that this algorithm reduce the cost of algorithm without reduce security,improved the efficiency of the algorithm.

关 键 词：无线网络协议 高级加密标准 CCMP协议 轮变换 AES改进算法 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]