Extending the DRM realm to external devices
First Claim
1. A method for rendering content, comprising the steps of:
- setting up a communication channel between a proxy rendering server of a mobile device and an external rendering server of an external device;
authenticating at least the external rendering server and upon successful authentication transferring a key from the proxy rendering server to the external rendering server;
transferring the content encrypted with the transferred key from the proxy rendering server to the external rendering server for rendering the content;
where the rendering of the content is performed in one of two modes, either in a preprocessing mode for performing processing of the content by the mobile device prior to transferring the content to the external rendering server, or in a non-preprocessing mode for performing processing of the content by the external device subsequent to receiving the content, and that a digital rights management (DRM) agent for digitally managing permissions associated with the content is only present in the mobile device and not in the external rendering server to relieve the external rendering server of a need to enforce DRM rights associated with the content, where the external rendering server is not part of same physical device or software control system as the mobile device;
where the preprocessing mode implemented by the mobile device further comprises the steps of;
authenticating at least the external rendering server via an authentication protocol, and upon successful authentication;
transferring the temporary key from the proxy rendering server to the external rendering server via a key provisioning protocol;
accessing decrypted content from the DRM agent;
preprocessing the decrypted content;
re-encrypting the decrypted and preprocessed content; and
transferring the re-encrypted content to the external rendering server for decryption and rendering of the content; and
where the non-preprocessing mode implemented by the mobile device further comprises the steps of;
obtaining the Content Encryption Key from the DRM agent of the mobile device;
authenticating at least the external rendering server via an authentication protocol;
and upon successful authentication;
transferring the Content Encryption Key from the proxy rendering server to the external rendering server via a key provisioning protocol;
accessing encrypted content from a file system in the mobile device; and
transferring the encrypted content to the external rendering server for decryption and rendering of the content.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a method and a system for rendering content on external devices securely. The method comprises setting up a communication channel between a proxy rendering server of a mobile device and an external rendering server of an external device, authenticating at least the external rendering server and upon successful authentication transferring a key from the proxy rendering server to the external rendering server, transferring the content encrypted with the transferred key from the proxy rendering server to the external rendering server for rendering the content, wherein the rendering of the content is performed in one of two modes, either in a preprocessing mode or in a non-preprocessing mode, and wherein a DRM agent is only present in the mobile device.
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Citations
23 Claims
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1. A method for rendering content, comprising the steps of:
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setting up a communication channel between a proxy rendering server of a mobile device and an external rendering server of an external device; authenticating at least the external rendering server and upon successful authentication transferring a key from the proxy rendering server to the external rendering server; transferring the content encrypted with the transferred key from the proxy rendering server to the external rendering server for rendering the content; where the rendering of the content is performed in one of two modes, either in a preprocessing mode for performing processing of the content by the mobile device prior to transferring the content to the external rendering server, or in a non-preprocessing mode for performing processing of the content by the external device subsequent to receiving the content, and that a digital rights management (DRM) agent for digitally managing permissions associated with the content is only present in the mobile device and not in the external rendering server to relieve the external rendering server of a need to enforce DRM rights associated with the content, where the external rendering server is not part of same physical device or software control system as the mobile device; where the preprocessing mode implemented by the mobile device further comprises the steps of; authenticating at least the external rendering server via an authentication protocol, and upon successful authentication; transferring the temporary key from the proxy rendering server to the external rendering server via a key provisioning protocol; accessing decrypted content from the DRM agent; preprocessing the decrypted content; re-encrypting the decrypted and preprocessed content; and transferring the re-encrypted content to the external rendering server for decryption and rendering of the content; and where the non-preprocessing mode implemented by the mobile device further comprises the steps of; obtaining the Content Encryption Key from the DRM agent of the mobile device; authenticating at least the external rendering server via an authentication protocol; and upon successful authentication; transferring the Content Encryption Key from the proxy rendering server to the external rendering server via a key provisioning protocol; accessing encrypted content from a file system in the mobile device; and transferring the encrypted content to the external rendering server for decryption and rendering of the content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electronic device for facilitating rendering of content in an external device, the electronic device comprising:
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a processor; application software adapted to be executed by the processor for generating a request for rendering content; a rendering server for receiving the request for rendering content; a digital rights management (DRM) agent for verifying license credentials; a proxy rendering server for setting up a communication channel with the external device and transferring content, where the electronic device is adapted to facilitate the content rendering in one of two modes, either in a preprocessing mode for performing processing of content by the electronic device prior to transferring the content to the external rendering server, or in a non-preprocessing mode for performing processing of content by the external device subsequent to receiving the content, and that the DRM agent for digitally managing credentials associated with the content is only present in the electronic device and not in the external device to relieve the external device of a need to enforce DRM rights associated with the content, where the external device is not part of same physical device or software control system as the mobile device; the electronic device is adapted to facilitate the preprocessing mode by; authenticating at least the external rendering server via an authentication protocol, and upon successful authentication; transferring the temporary key from the proxy rendering server to the external rendering server via a key provisioning protocol; accessing decrypted content from the DRM agent; preprocessing the decrypted content; re-encrypting the decrypted and preprocessed content; and transferring the re-encrypted content to the external device for decryption and rendering of the content; and the electronic device is adapted to facilitate the non-preprocessing mode by; obtaining the Content Encryption Key from the DRM agent of the mobile device; authenticating at least the external rendering server via an authentication protocol; and upon successful authentication; transferring the Content Encryption Key from the proxy rendering server to the external device via a key provisioning protocol; accessing encrypted content from a file system in the mobile device; and transferring the encrypted content to the external device for decryption and rendering of the content. - View Dependent Claims (21, 22, 23)
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Specification