This paper describes a multiple rights management framework for the multimedia content enforcement. Today, contents sharing and superdistribution in the personal private networks, including home network and office network, has become easy due to advancement in computer technology. However, most DRM server groups only works with their own DRM client, so end-users must have various vendors' clients software to play contents encoded by each vendors' server systems. And the DRM server groups may worry that end-users could give or lend multimedia contents to another domain where the DRM server groups don't allow. To resolve these problems, we propose a new scheme in which multiple rights and contents are managed not by the client in each device but by proxy manager delegated to control the multimedia devices in the personal private networks. This scheme supports rights governance by public key based group communication scheme that ensures that only legitimate operations can apply to the content.
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