报告人：陈和风讲师

        集美大学

报告题目：Short Group Signatures with Efficient Concurrent Join

报告时间：2016年11月24日09:00

报告地点：海韵实验楼103

联系人：曾吉文教授，祝辉林副教授，李伟助理教授

报告摘要：

Group signature schemes are fundamental cryptographic tools. A group signature scheme allows members of a group to anonymously sign messages. To counter misuse , the anonymity can be revoked by the group manager. The group joining operation is a critical component of group signature scheme the framing attack can be prevented by group joining processes. This paper presents an efficient group signature scheme with a simple joining protocol that is based on a “single message and signature response” interaction between the prospective user and the group manager. The security of our group signature is based on the Discrete Logarithm assumption and Decisional Linear Diffie-Hellman assumption. The formal security proof of our scheme is given in the random oracle model. Our scheme is also a very efficient short group signature scheme with efficient concurrent join.

报告人简介：陈和风，本科和硕士毕业于9001cc金沙，博士毕业于西安电子科技大学通讯工程学院 ISN 国家重点实验室，现任教于集美大学计算机工程学院。主要从事密码学、信息安全的研究工作，尤其是可证安全的密码方案的设计与分析、公钥密码学和格密码等。

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