THREE –PARTY SECURE AUTHENTICATED KEY AGREEMENT PROTOCOL BASED ON IDENTITY SIGN

摘要

Three-party secure Authenticated key agreement protocol based on identity sign is proposed according to the analysis of several key agreement protocols. Our protocol combines the public key with the identity of the user, and realizes the authentication of identity between the two communication users based on sign. In this protocol the third party just participates in the time in user’s initialization and renewal without participating in the correspondence both sides key exchange each time, therefore the high efficiency and security of this protocol is guaranteed. This paper compares the security and efficiency with other key agreement protocols. At the end of our paper, we analyze the flaws and propose the future works of this protocol.