一种无线局域网预共享密钥自动更新协议  

Novel Automatic Key Updating Protocol forWireless Local Area Network Pre- shared Key

作　　者：刘永磊 金志刚 Liu Yongleil;Jin Zhigang(School of Electrical&Information Engineering,Tianjin University,Tianjin 300072,China;School of Computer&.Information Engineering,Tianjin Chengjian University,Tianjin 300084,China)

机构地区：[1]天津大学电气自动化与信息工程学院,天津300072 [2]天津城建大学计算机与信息工程学院,天津300384

出　　处：《南开大学学报（自然科学版）》2020年第5期73-76,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：中国博士后科学基金(2016M601265);天津市教委科研计划项目(2016CJ11)。

摘　　要：提出了基于图像密码的新型无线局域网自动密钥更新协议,协议架构合理,利用原始标准协议中的保留字段,并使用图像密码系统生成安全强度足够的PSK,并完成PSK的自动定时更新,新的安全架构能很好地满足安全需求,可安全接入采用PSK模式的接入点(AP),并有利于安全可靠的公共场景下的无线局域网应用.As the development of wireless local area network(WLAN) and smart device, WLAN access security and key updating issues had become increasingly prominent. Starting with the key updating method of IEEE 802.11 standard, the existing WLAN key updating methods were classified and analyzed,which were in response to the brute forcer of the WLAN Pre-Shared Key(PSK) mode. And using Technique for Order Preference by Similarity to Ideal Solution(TOPSIS), the existing researches were analyzed and compared. Facing the problems of system security, complexity, and user convenience of existing key updating methods, a new security protocol based on graphical password was proposed. Using the reserved fields in the original standard protocol and graphical password system, the enough safe PSK was generated, and automatically and periodically updated. The results show that the new security protocol can satisfy the security requirements of WLAN, and access to WLAN access point(AP) securely for large-scale public place WLAN applications.

关 键 词：无线局域网 预共享密钥 逼近理想解排序法 图像密码 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]