META DATA ACCESS CONTROL SYSTEM, METHOD THEREOF, RECEPTION DEVICE, AND TRANSMISSION DEVICE

摘要

A system and method is provided to prevent a content from being used by meta data unauthorized by a source of the content. In the system, a meta data verifier verifies meta data. A content verifier verifies a content and a source of the content. A meta data access control information verifier verifies meta data access control information that indicates a relationship between a content and meta data that is permitted to access the content and also verifies a publisher of the meta data access control information. A meta data determinator determines whether or not the publisher of the meta data access control information is trusted by the source of the content and determines whether or not the meta data is reliable. When it is determined that the meta data is reliable, meta data using means allows use of the meta data.