2014•Jisuanji yingyong yanjiuRequires access
Certificateless authenticated tripartite key agreement protocol
LI Xu-don
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Abstract
In order to resist against the active attacks,Chen Jia-qi proposed an authenticated tripartite key agreement protocol based on certificateless cryptography in 2010. However,the protocol couldn't resist the passive opponent's attack,and it also couldn't meet some security attributes stated by Chen Jia-qi. In order to solve the above problems,based on an efficient certificateless two-party authenticated key agreement protocol given by He De-biao,this paper proposed a new certificateless authenticated tripartite key agreement protocol. The security and efficiency of the new protocol were analyzed. The result shows that the new protocol satisfies the security properties of the certificateless authenticated tripartite key agreement protocol. Compared with the protocol proposed by Chen Jia-qi,the efficiency of the new protocol is higher,which attributes to the reduced number of pairings in the new protocol.