抗连续泄露的（细粒度）漫游认证机制研究

Traditional roaming authentication protocols of heterogeneous wireless network share some shortcomings such as the update operation of temporary identity is complex, the leakage-resilient property is weak, and the fine-grained access control is missing, etc..This project aims to investigate the constructions of continuous leakage-resilient (fine-grained) roaming authentication schemes in heterogeneous wireless network and their variants which are secure under (continuous) leakage setting. It includes the following contents:.(1) to develop an efficient update approach of a temporary identity, and construct roaming authentication schemes with two parties based on the fuzzy identity..(2) to investigate (continuous) leakage-resilient roaming authentication schemes based on different types of adversarial attacks in the presence of information (continuous) leakage..(3) to develop fine-grained access control strategies based on attribute and propose efficient (continuous) leakage-resilient fine-grained roaming authentication schemes..The fruits of the proposed research will enrich the traditional roaming authentication scheme of heterogeneous wireless network, and promote the wide acceptance of mobile intelligent terminal. This project is of great significance in both theory and practice.

异构无线网络下的传统漫游认证机制普遍存在临时身份更新复杂、抗泄露性弱和缺乏细粒度访问控制等不足。.本项目将研究异构无线网络下抗连续泄露（细粒度）漫游认证机制的理论及方法，具体研究内容包括：.（1）针对临时身份更新效率低的不足，设计通用的模糊身份生成器以实现临时身份的高效更新，并研究支持模糊身份的两方参与的漫游认证机制；.（2）为满足漫游用户抗（连续）泄露攻击的实际应用需求，在有（连续）泄露攻击的场景中，基于不同的敌手攻击模型，研究抗（连续）泄露的漫游认证机制；.（3）由于缺乏对漫游用户的细粒度访问控制，基于属性研究用户漫游过程的多维度认证策略，并设计基于属性的抗（连续）泄露细粒度漫游认证机制。.本项目的研究将推广和丰富异构无线网络下的传统漫游认证机制，同时会促进移动智能终端的普及，选题具有重要的理论意义和实用价值。

异构无线网络下的传统漫游认证机制普遍存在临时身份更新复杂、抗泄露性弱和缺乏细粒度访问控制等不足。针对上述问题，本项目研究了异构无线网络下抗连续泄露（细粒度）漫游认证机制的理论及方法，本项目的主要贡献有：.（1）针对临时身份更新效率低的不足，设计了通用的模糊身份生成器以实现临时身份的高效更新，并研究了支持模糊身份的两方参与的漫游认证机制；.（2）为满足漫游用户抗（连续）泄露攻击的实际应用需求，在有（连续）泄露攻击的场景中，基于不同的敌手攻击模型，研究了抗（连续）泄露的密码基础机制的理论和构造方法；.本项目的研究推广和丰富异构无线网络下的传统漫游认证机制，同时促进移动智能终端的普及。