Method and apparatus for generating proxy-signature on right object and issuing proxy signature certificate

A proxy signature and device technology, which is used in electronic digital data processing, special data processing applications, trust models of public key infrastructure, etc., and can solve problems such as device content transmission restrictions

Inactive Publication Date: 2008-06-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when several users' devices are controlled by different DRM systems, if a user wants to reproduce purchased content in two or more devices, the user must purchase separate rights objects for each device that will reproduce the content
Additionally, content transfer between devices will be restricted if the DRM system controlling the device is not compatible

Method used

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  • Method and apparatus for generating proxy-signature on right object and issuing proxy signature certificate
  • Method and apparatus for generating proxy-signature on right object and issuing proxy signature certificate
  • Method and apparatus for generating proxy-signature on right object and issuing proxy signature certificate

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Embodiment Construction

[0029] Reference will now be made in detail to the described embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0030] figure 2 is a block diagram of a digital rights management (DRM) system according to an embodiment of the present invention. The first DRM system includes a first rights issuer 240 and a first device 210 . The second DRM system includes a second rights issuer 250 and a second device 230 . The rights object proxy signing device 220 may be located in the first DRM system, the second DRM system, or a place different from the above two systems. The first device 210 and the second device 230 may be desktop computers, laptop computers, mobile phones, personal digital assistants, personal entertainment devices, set-top boxes, reproduction devices, o...

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Abstract

A method and apparatus for generating a proxy signature on a right object, and a method and apparatus for issuing a proxy signature certificate. The right object proxy signature method includes receiving a proxy signature certificate in which authority for right object conversion is specified, from a right issuer; receiving a right object from a first apparatus; signing the right object; and transmitting the signed right object and the proxy signature certificate to a second apparatus. Accordingly, by allowing a right object to be signed by a third right object proxy signature apparatus, not by a right issuer, users can freely share their own content between a variety of apparatuses, and the right issuer can reduce the load associated with the conversion and signature of right objects.

Description

[0001] This application claims the benefit of Korean Patent Application No. 2006-119136 filed with the Korean Intellectual Property Office on Nov. 29, 2006, the disclosure of which is hereby incorporated by reference. technical field [0002] Aspects of the present invention relate to an apparatus and method for allowing devices using a digital rights management (DRM) system to share a rights object, and more particularly, the present invention relates to an apparatus and method in which when a second device attempts to use a When the content in the first device is used, the copyright object agent signature device is allowed to replace the copyright issuer who manages the rights object of the second device to convert the rights object of the first device and generate a proxy signature on the rights object. The present invention also relates to a A method and apparatus for allowing a proxy issuer to issue proxy signing certificates. Background technique [0003] Digital right...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/00
CPCH04L9/3247H04L9/006H04L2209/76H04L2209/603H04L9/3263G06F17/00
Inventor 李载元姜甫暻
Owner SAMSUNG ELECTRONICS CO LTD
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