关键词: 会议密钥协商 双线性映射 基于身份

Abstract:

Most published key agreement protocols are based on the Diffie-Hellman key agreement, which enables all parties to establish a session key and communicate securely. In the conference key agreement system, the agreement informa- tion needs to be authenticated. In this paper,we find out two leaks of lit erature [1], and then propose an ID-based confer- ence key agreement scheme from pairings. The proposed scheme is secure against replaying attacks, cons  piratorial imper- sonation attacks, impersonation attacks and man-in-the-middle attacks. Compared to [1], it has better security, efficiency, and practi cability in the multi-party communications through the network.

Key words: conference key agreement, bilinear pairings map ID-based