Identity-based enhanced tripartite authenticated key agreement
Zhang Wen-k · Computer Engineering and Applications Journal · 2013
The security of existing tripartite authenticated key agreement protocol is poor, and the computing costs of that are high. An identity-based enhanced tripartite authenticated key agreement protocol is proposed. The new protocol achieves the basic security properties, and uses the short signature and time stamp to further enhance security. Analysis shows that the enhanced protocol meets the known security properties of tripartite key agreement, and has only two bilinear pairing operations. Its computing costs are lower than other ones. In addition, this paper proposes stronger key-compromise impersonation resilience. For the first time, the serious faults of the schemes of Chen Hao and Chen Jiaqi et al are pointed out.