A Fault-Tolerant Distributed Conference Key System

• Main Authors: Chung-Hsuan Kuo, 郭仲軒
• Other Authors: Wen-Guey Tzeng
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/52810789868653078673

碩士 === 國立交通大學 === 資訊科學系 === 87 === When some members want to hold a conference over the open Internet, maybe there are some passive attackers trying to eavesdrop the communication. So those conference participants should establish a common conference key before the conference, and then they could use the conference key to encrypt the communication messages during the conference. But when those conference participants are executing a conference key agreement protocol, some malicious participants would try to cheat other participants, and let the honest participants fail to get a common conference key. We proposed a distributed conference key agreement protocol without any trusted authentication center. If the majority of participants are honest, the honest participants will establish a common conference key. Our protocol is zero-knowledge against a passive attacker.