| Rijndael算法优化技术研究 |
| |
| 引用本文： | 刘丽,何加铭,刘太君,曾兴斌.Rijndael算法优化技术研究[J].宁波大学学报(理工版),2008,21(1):20-24. |
| |
| 作者姓名： | 刘丽 何加铭 刘太君 曾兴斌 |
| |
| 作者单位： | 1. 宁波大学 通信技术研究所,浙江 宁波 315211;宁波教育学院 科技学院,浙江 宁波 315010
2. 宁波大学 通信技术研究所,浙江 宁波 315211;宁波市通信芯片与射频技术重点实验室,浙江 宁波 315040 |
| |
| 摘 要： | 通过深入分析Rijndael算法,改进了AES算法的几个有可能产生不安全隐患的步骤.首先是对于最可能被攻击的混列进行优化,使该步骤变成简单的查表而不是域乘,增加了非线形安全性;其次对于子密钥的生成方面引入了随机函数使密钥的生成和选择变成随机性的,而不是原算法简单的线形选择,这样可以较完全抵抗线形密码分析的攻击.
|
| 关 键 词： | Rijndael算法 密钥 AES S-盒 |
Optimization Study of Rijndael Algorithm |
| |
| LIU Li,HE Jia-ming,LIU Tai-jun,ZENG Xing-bin.Optimization Study of Rijndael Algorithm[J].Journal of Ningbo University(Natural Science and Engineering Edition),2008,21(1):20-24. |
| |
| Authors: | LIU Li HE Jia-ming LIU Tai-jun ZENG Xing-bin |
| |
| Institution: | LIU Li, HE Jia-ming, LIU Tai-jun, ZENG Xing-bin ( 1 .Communication Technology Institute, Ningbo University, Ningbo 315211, China; 2.Faculty of Science and Technology, Ningbo Institute of Education, Ningbo 315010, China; 3.The Ningbo Key Lab of Communication Chips ＆ RF Technology, Ningbo 315040, China ) |
| |
| Abstract: | Through analyzing the algorithm of Rijndael, some technical points are made in this paper with respect to improving several steps which may incur potential risks. By optimizing the most vulnerable MixColumns, the multiplication in field is replaced with using look-up tables so the security of nonlinearity is enhanced. In regard to creating the sub-key, instead of utilizing the simple linear selection as used in the original algorithm, this paper introduces the random function to generate and choose the keys so that the attacks of linear cryptanalysis can be resisted much more effectively. |
| |
| Keywords: | Rijndael algorithm cryptographic key AES S-box |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
