华东师范大学张磊教授学术报告

发布日期:2017-09-27 浏览次数: [字体: ]

报告题目:车载自组织网中密码混淆区的建立

报告人:   张磊   教授

          华东师范大学

报告时间: 9月28日下午4点

报告地点: 明理楼402

报告人简介:

    张磊,研究员,博导,研究领域包括车载网安全,云计算安全与公钥密码学;12年获上海市晨光学者;发表论文近70篇,含本领域CCF A类/一区论文10余篇。主持国家/省部级项目5项,含国家重点研发计划重点专项(华东师大负责人);参与国家自然科学基金重点项目等。担任了3个国际期刊编委,Future Generation Computer Systems 客座编辑,30多个国际会议程序委员会委员、60多个国际期刊/会议的审稿人。

摘要:Location privacy is one of the major challenges in vehicular ad hoc networks (VANETs). Due to the open and broadcast nature of wireless communication, the safety messages of vehicles can be easily collected by malicious eavesdroppers to continuously track vehicles. Cryptographic mix-zone (CMIX) is a promising tool to enhance vehicle privacy, in which the safety messages of vehicles are encrypted using a group secret key. In that way, any outsider cannot monitor the safety messages broadcasted by the vehicles in the CMIX. Existing CMIX protocols need fully trusted dealers to distribute group secret keys and/or suffer from the problem of efficient key update. This talk introduces a novel method based on a new security tool referred to as one-time identity-based authenticated asymmetric group key agreement (OTIBAAGKA) to create CMIXes. Different from the existing solutions, the proposal does not rely on the existence of fully trusted dealers and deals with efficient key update in CMIX for the first time.