An efficient fault-tolerant group key agreement protocol

作者：Zhao, Jianjie^*; Gu, Dawu; Li, Yali

来源：Computer Communications, 2010, 33(7): 890-895.

DOI：10.1016/j.comcom.2010.01.001

• Cryptography
• Group key agreement
• Fault-tolerance
• Security
• Efficiency

Group key agreement (GKA) is a mechanism important for establishing a session key used to encrypt and/or decrypt sensitive messages transmitted to an intended group of receivers in an open network. An efficient group key agreement protocol capable of fault-tolerance named efficient GKA (EGKA) is proposed in this paper. EGKA is not only resistant to DoS attacks, replay attacks, man-in-the-middle attacks and common modulus attacks but also achieves forward secrecy. The efficiency analysis shows that EGKA is more efficient than previous fault-tolerant GKA protocols mentioned in our paper. Moreover, the long-term keys of participants can be reused which reduce the computational burden of the server.

• 出版日期2010-5-3
• 单位上海交通大学