CONTENT PROTECTION METHOD AND SYSTEM

摘要

The present invention relates to a content protection method and system as well as to a reproduction method and device providing copy protection of electronic content. In order to provide protection against illicit copying by consumers as well as by authoring and formatting facilities content-dependent encryption of the content is proposed. In an encryption step the content (C0) is encrypted using an application key (AK) and/or a disc key (DK). Further, a content-dependent content mark (AK', H, MAC) is generated using said content (C0), which content mark is to be evaluated during decryption of said encrypted content (C2).