1RFC 2824 "Call Processing Language Framework and Requirements" J. Lennox H. Schulzrinne, Columbia University,May 2000.
2Internet Draft "CPL: A Language for User Control of Internet Telephony Services" draft - ietf - iptel - cpl - 06.txt IPTEL WG Lennox/ Schulzrinne Columbia University, January 15,2002 Expires: July, 2002.
3RFC 3050 "Common gateway interface for SIP", J. Lennox, J.Rosenberg, and H. Schulzrinne, Columbia University,January2001.
6Gail-Joon A, Sandhu R. Injecting RBAC to Secure a Web-based Workflow System[C]//Proceedings of the 5th ACM Workshop on Role-based Access Control. New York, USA: ACM Press, 2000.
7Boneh D, Franklin M. Identity Based Encryption from Weil Pairing[C]//Proc. of CRYPTO'01. Berlin, Germany: Spinger-Verlag, 2001.