Abstract: Aiming at the problems of authentication among roaming users, this paper proposes an Identity Based Encryption(IBE) wireless authentication protocol of anonymity roaming by using the IBE technology and the correlation characteristics of bilinear pairings. The security of authentication and anonymity are analyzed by formal approach under the unauthenticated-links model. It is showed that the protocol can achieve authentication securely, has a secure anonymity, and achieves the secure requirements of the wireless network. The protocol provides non-repudiation between different companies. Comparing with existing schemes, this protocol can be applied to the roaming authentication in the wireless network more practical.

Key words: bilinear mapping, Identity Based Encryption(IBE), anonymity, wireless authentication

摘要： 针对移动漫游认证问题，采用基于身份加密技术和双线性对的相关特性，提出一种基于身份加密的匿名漫游无线认证协议，分析协议的安全性和匿名性，给出在非认证链路模型下安全的形式化证明。分析表明，该协议在保证用户身份不被泄漏的前提下，实现了用户与接入点之间的双向验证，满足无线网络环境的安全需求，并提供不同运营商之间的不可否认服务。与现有协议相比，该协议为匿名漫游认证提供了一种更实用的解决方案。

关键词: 双线性映射, 基于身份加密, 匿名性, 无线认证

CLC Number: 

• TP309