An Efficient and Secure Protocol for DTV Broadcasts

摘要

Bilinear pairing based mutual authentication and key agreement protocol for DTV broadcast encryption is presented in this paper. The protocol facilitates key agreement with lesser communication between set-top box and smart card with forward secrecy and is resilient to replay, forgery, man-in-the-middle and insider attacks and we provide the security analysis for it. The protocol is especially attractive for conditional access system including gaming, betting, shopping and banking services and where the user' smart card have low computational power. The protocol also provides flexible password change option to the users.