摘要
文章对网络安全中的密钥自动更新算法进行了综合比较研究,提出了一种基于AES(Rijndael)算法的密钥更新方案,采用该方案对无线局域网(WLAN)中的有线等效保密(WEP)机制进行了改进,这样既能兼容WEP,又可为将来开发AES产品提供技术支持。分析测试表明,本方案的安全性和常用的基于Hash函数的级别相同,而速率是Hash方案的3～5倍;该方案具有比TKIP(临时密钥完整性协议)更好的伪随机性,速率也比TKIP快,对WLAN而言是一个可选方案。另外,该方案比TKIP灵活,还可用于其它相应情形。
The algorithms of re-keying in network have been studied comprehensively.A re-keying scheme based on AES(Rijndael)algorithm has been given out.It is employed to improve the WEP in WLAN.Thus it is compatible with WEP and it can also provide technical support for developing AES product in the future.Analysis and test results indicate that the security grade of this scheme is as same as the popular one based on hash functions,while the speed of the former is faster than the latter.Both the pseudo-randomness and speed of this scheme are more outstanding than TKIP's.For this reason,it is an optional interim one for WLAN.In addition,it is more flexible than TKIP.Therefore it is applicable to similar circumstance.
出处
《计算机工程与应用》
CSCD
北大核心
2003年第35期27-29,共3页
Computer Engineering and Applications
基金
国家863高技术研究发展计划(编号:2002AA143010)
江苏省信息安全重点实验室资助项目
