News Column

Patent Application Titled "System and Method for Providing Access of Digital Contents to Offline Drm Users" Published Online

March 6, 2014



By a News Reporter-Staff News Editor at Computer Weekly News -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventors Veerubhotla, Ravi Sankar (Hyderabad, IN); Saxena, Ashutosh (Hyderabad, IN); Gupta, Shikha (New Delhi, IN); Ponnapalli, Harigopal K.B. (Hyderabad, IN), filed on July 12, 2013, was made available online on February 20, 2014.

The assignee for this patent application is Infosys Limited.

Reporters obtained the following quote from the background information supplied by the inventors: "Digital Rights Management (DRM) is a term for access control technologies that can be used by copyright holders, publishers and hardware manufacturers to limit the usage of digital contents and devices. The digital contents can be in the form of documents, e-books, audio, video and game, software libraries. DRM controls the access of sensitive contents by including information about the user rights (i.e. permissions, constraints and obligations) associated with that content. The digital rights management also involves cryptographic techniques and access control mechanisms for preventing unauthorized access; and control usage of contents. Such limitations include the number of copies that may be printed, whether the file may be copied, duration of the file may be accessed and whether the content may be edited.

"Presently, a range of DRM solutions are available in the market. But, in most of the cases the client has to be online and connected to the server for consumption of the digital contents. There are very few offline data consumption model present in the market. But existing offline DRM solutions do not provide a uniform framework for the protection of multiple content types such as digital objects, libraries, executables etc. Their relevance and usage is restricted to a particular type of content or a selective range of content types.

"In view of the foregoing discussion, there is a need for a DRM solution that can support the offline data consumption by the user, prevent the illegal exploitation of the license and can provide the uniform framework to protect digital objects and software library."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "The present invention overcomes all the above mentioned limitations by providing the facility of offline data consumption if the DRM client has limited or no connectivity to the DRM server. This invention prevents the illegal exploitation of the license by establishing the trust relationship between the server and the end user by a onetime activation or registration and connectivity to the DRM server. Further, this invention provides the uniform framework to protect digital objects and software library.

"According to the present embodiment, a method for providing access of one or more heterogeneous digital contents to at least one offline Digital Rights Management (DRM) user by a DRM server is disclosed. The method includes registering the at least one DRM user by generating at least one digital certificate corresponding to the at least one DRM user and a computing device of the at least one DRM user by the DRM server, wherein the at least one digital certificate is sent to the at least one DRM user. Further, the DRM server receives the one or more heterogeneous digital contents from a publisher, wherein the publisher encrypts the one or more heterogeneous digital contents before or after uploading into the DRM server and grants one or more rights to the at least one DRM user with respect to the one or more heterogeneous digital contents after uploading into the DRM server. Further, information related to decryption of the one or more encrypted heterogeneous digital contents, the one or more granted rights, the at least one digital certificate and information related to the at least one user are stored in the repository of the DRM server. After that, when the at least one DRM user wants to render the one or more heterogeneous digital contents, the DRM server authenticates the at least one DRM user based on the information related to the at least one user previously stored in the repository. If the at least one DRM user is authenticated then, the DRM server generates a DRM license, wherein the DRM license includes the information for decrypting the one or more encrypted heterogeneous digital contents and the one or more granted rights for the at least one authenticated DRM user. After generating the DRM license, the DRM server sends the license to the at least one authenticated DRM user to render the digital contents, wherein the one or more heterogeneous digital contents are rendered by using the at least one digital certificate stored at the computing device of the at least one DRM user and the information stored in the DRM license. Alternatively, the DRM user receives the license in an email from the publisher and uses it for rendering the content.

"In an additional embodiment, a system for providing access of one or more heterogeneous digital contents to at least one offline Digital Rights Management (DRM) user by a DRM server is disclosed. The system includes a registration module, a publication module, a user rights management module, a repository, an authentication module, a license management module. The registration module is configured to register the at least one DRM user by generating at least one digital certificate corresponding to the at least one DRM user and a computing device of the at least one DRM user by the DRM server. The publication module configured to publish the one or more heterogeneous digital contents in encrypted form at the DRM server by a publisher, wherein the publisher encrypts the one or more heterogeneous digital contents before or after uploading into the DRM server. In accordance with an embodiment of the present disclosure, the publisher uses an encryption module to encrypt the heterogeneous digital contents. The user rights management module configured for granting and revoking one or more rights with respect to the one or more heterogeneous digital contents for the at least one DRM user. The repository is configured for storing information related to the at least one user, information related to decryption of the one or more encrypted heterogeneous digital contents, the user rights information and the at least one digital certificate. The authentication module is configured for authenticating the at least one DRM user who wants to render the one or more heterogeneous digital contents based on information related to the at least one user previously stored in the repository and the license management module is configured for generating and sending a DRM license to the at least one authenticated DRM user to consume the one or more heterogeneous digital contents.

"The foregoing and other objects, features, and advantages of the invention will become more apparent from the following detailed description, which proceeds with reference to the accompanying figures.

DRAWINGS

"Various embodiments of the invention will, hereinafter, be described in conjunction with the appended drawings provided to illustrate, and not to limit the invention, wherein like designations denote like elements, and in which:

"FIG. 1 illustrates an environment in which various embodiments of the invention presented herein may be practiced;

"FIG. 2 a block diagram illustrating a system for providing access of one or more heterogeneous digital contents to at least one offline Digital Rights Management (DRM) user by a DRM server, in accordance with an embodiment of the present invention.

"FIG. 3 is a flowchart, illustrating a method for providing access of one or more heterogeneous digital contents to at least one offline Digital Rights Management (DRM) user by a DRM server, in accordance with an embodiment of the present invention.

"FIG. 4 is a flowchart, illustrating a method of registration in accordance with an embodiment of the present invention.

"FIG. 5 is a flowchart, illustrating a method of publication in accordance with an embodiment of the present invention.

"FIG. 6 is a flowchart, illustrating a method of consumption of the digital contents by the DRM user, in accordance with an embodiment of the present invention.

"FIG. 7 is a flowchart, illustrating a maintenance activity for machine certificate, in accordance with an embodiment of the present invention.

"FIG. 8 is a flowchart, illustrating a maintenance activity for user certificate, in accordance with an embodiment of the present invention.

"FIG. 9 is a block diagram of the DRM server displaying API for the DRM client integration.

"FIG. 10 is a workflow illustrating the integration of the DRM server with the DRM client.

"FIG. 11 is a computer architecture diagram illustrating a computing system capable of implementing the embodiments presented herein."

For more information, see this patent application: Veerubhotla, Ravi Sankar; Saxena, Ashutosh; Gupta, Shikha; Ponnapalli, Harigopal K.B. System and Method for Providing Access of Digital Contents to Offline Drm Users. Filed July 12, 2013 and posted February 20, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=54&p=2&f=G&l=50&d=PG01&S1=20140213.PD.&OS=PD/20140213&RS=PD/20140213

Keywords for this news article include: Software, Infosys Limited.

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Source: Computer Weekly News


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