Conditional access system and smartcard for use in conditional access system

摘要

Embodiments of the invention include a conditional access system comprising a terminal and a smartcard, wherein the terminal comprises a user interface for interaction with an end-user, comprising an output for displaying first user interaction data and an input for generating second user interaction data in response to the first user interaction data; and a descrambler configured for descrambling scrambled content, and wherein the smartcard is configured for generating the first user interaction data and allowing, in dependence of the second user interaction data received from the user interface, the descrambler to descramble the scrambled content.

主权项

1. A conditional access system comprising:
a terminal and a smartcard, wherein the terminal comprises:
a user interface for interaction with an end-user, comprising an output for displaying first user interaction data for authentication and an input for generating second user interaction data in response to the first user interaction data via a user interaction; anda descrambler configured for descrambling scrambled content, and wherein the smartcard is configured for:
in response to receiving an encrypted key from the terminal, generating the first user interaction data for authentication and transmitting the first user interaction data to the terminal;receiving, from the terminal, the second user interaction data in response to the first user interaction data for authentication; anddetermining whether the second user interaction data received from the user interface is acceptable, and in response to the determination, allowing the descrambler to descramble the scrambled content based on the encrypted key.