METHOD AND SYSTEM FOR CONDITIONAL ACCESS VIA LICENSE OF PROPRIETARY FUNCTIONALITY

The invention discloses a method and a system for securely and traceably enabling playing back of content on a playback device of a plurality of playback devices, in which each of the plurality of playback devices comprises a cryptographic function module (CFM). In one embodiment, the method comprises accepting a first input in the playback device from a content licensing agency; generating, in the device, a first output from the first input according to a proprietary cryptographic function using the CFM, the first output necessary to enable playback of the content by the playback device, theproprietary cryptographic function being one of a family of proprietary cryptographic functions executable by the CFM of each of the plurality of playback devices; and enabling the playback of the content by the device at least in part according to the first output. 本发明公开了种用于安全并且可追踪地使得能够在多个回放装置中的回放装置上回放内容的方法和系统，其中多个回放装置中的每个包括密码函数模块(CFM)。在个实施例中，该方法包括：在回放装置中从内容许可机构接受第输入；在装置中，使用CFM根据专有密码函数从第输入产生第输出，该第输出是使回放装置能够回放内容所必需的，专有密码函