CONDITIONAL ACCESS VIA SECURE LOGGING WITH SIMPLIFIED KEY MANAGEMENT

摘要

A method and apparatus for distributing content data from a content provider to a subscriber. The method includes encrypting content data by the content provider and providing the content data from the content provider to a broadcaster. The content provider also provides a content descriptor, including keys to decrypt the encrypted content, to a conditional access provider (170). The broadcaster (130) distributes the encrypted content information (150) to a subscriber. A business service provider (160) negotiates with the subscriber to deliver individual content programs or packages of content programs to the subscriber for a fee. The conditional access provider distributes a content descriptor including keys necessary to decrypt the programs the subscriber selected from the business service provider. A CAM (122) retained by the subscriber maintains a log (114) of programs accessed, and uploads the log to the business service provider, which is used to determine the appropriate fee which the subscriber should be charged.