Transdomain authentication and key agreement protocol based on bilinear pairings

A transdomain authentication and key agreement protocol based on bilinear pairings was proposed combining the merits of the proxy signature and signcryption.Mutual authentication between mobile user and service provider,anonymity of the mobile user and freshness of the session key was realized,which provided fairness and practicability,and avoided replay attack,denial of service attack,man-in-middle attack and key-compromise impersonation.