Sattam S. Al-Riyami Kenneth G. Paterson Tripartite Authenticated Key Agreement Protocols from Pairings. 332-359 http://dx.doi.org/10.1007/978-3-540-40974-8_27 2003 conf/ima/2003 IMA Int. Conf. db/conf/ima/ima2003.html#Al-RiyamiP03