关键词: 电话会议, （t, n）秘密共享, 匿名, 认证

Abstract: Wireless conference call has become a research hotspot due to its economy，convenience and uncertain location of the participants.The ability to protect and authenticate the identity of participants in wireless conference call application is critical.In this paper，a new protocol presented for wireless conference key setup integrates symmetric key encryption，hashing and （t，n） secret shared together.To start a new conference，at least t participants have to be active and broadcast their shares.This protocol provides mobile participants with user identity anonymity and authentication during the conference call.According to the importance of the meeting and the connection of the wireless network，the chairperson can set an appropriate value for its corresponding t.Compared with Zhong’s protocol，this protocol has better availability and wider application.

Key words: conference call, （t, n） secret shared, anonymity, authentication