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Method and system of adding region and obtaining authority object of mobile terminal

A mobile terminal and copyright object technology, applied in the DRM field, can solve the problems of poor security of the DRM system

Active Publication Date: 2007-09-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The present invention provides a method, system and related equipment for a mobile terminal to obtain a copyright object and join a domain, so as to solve the problem of poor security in the existing DRM system

Method used

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  • Method and system of adding region and obtaining authority object of mobile terminal
  • Method and system of adding region and obtaining authority object of mobile terminal
  • Method and system of adding region and obtaining authority object of mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] As shown in Figure 4, the first embodiment is based on the existing 2-pass protocol process of requesting RO from RI initiated by the mobile terminal, and adds the step of RI requesting the OCSP responder to verify the validity of the RI certificate:

[0111] S41. The DRM Agent sends an RO request message to the RI;

[0112] The RO request message carries the DRM Agent certificate, the identification information and usage method of the digital information selected by the mobile terminal user, and the DRM Agent uses the user's private key and the complete RO request message to generate the user's digital signature.

[0113] S42. The RI sends an OCSP request (OCSP Request) message to the OCSP responder to request verification of the validity of the RI certificate;

[0114] After receiving the RO request message sent by the mobile terminal, RI first uses the user public key and user digital signature to verify whether the terminal identity is legal. The verification method...

Embodiment 2

[0132] As shown in Figure 5, Embodiment 2 is based on the existing 1-pass protocol flow of RI distributing ROs to mobile terminals, and adds the step of verifying the validity of RI. Compared with Embodiment 1, DRM Agent does not need to send ROs to RIs. To send the RO request message, other steps are the same as in Embodiment 1, specifically:

[0133] S51. The RI sends an OCSP request message to the OCSP responder to request to verify the validity of the RI certificate;

[0134] The RI sends an OCSP request message to the OCSP responder, and the message carries the RI certificate and the RI digital signature generated by using the RI private key.

[0135] S52. The OCSP responder returns an OCSP Response authentication response message to the RI;

[0136] The OCSP responder first uses the RI public key and RI digital signature to authenticate the validity of the RI identity. If it is legal, it judges the validity of the RI certificate according to the RI certificate revocatio...

Embodiment 3

[0149] As shown in FIG. 6 , the third embodiment is based on the existing 2-pass protocol flow in which the mobile terminal requests the RI to join the domain, and adds an authentication step of the RI certificate, specifically including:

[0150] S61. The DRM Agent sends a domain join request message to the RI;

[0151]The mobile terminal user selects the operation of joining the domain through the DRM Agent and enters the domain joining ID according to the prompt, and the DRM Agent sends a domain joining request message to the RI. key and complete the user's digital signature generated from the domain join request message.

[0152] S62. The RI sends an OCSP request message to the OCSP responder, requesting to verify the validity of the RI certificate;

[0153] After receiving the request message to join the domain sent by the mobile terminal, RI uses the user public key and user digital signature to verify the legitimacy of the terminal user's identity, and refuses to reply...

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Abstract

A method for adding domain in and obtaining right object from mobile terminal includes requesting identification of RI certificate by distributor RI to OCSP responser and containing valid identification OCSP responser digital signature in RO response message confirming that OCSP responser is legal by mobile terminal according said digital signature, obtaining RO object or adding domain cipher to ensure safety and reliability of coming source of RO object or adding domain cipher after RI certificate validity is confirmed.

Description

technical field [0001] The present invention relates to the DRM (Digital Rights Management, digital rights management) technology in the mobile communication system, particularly relate to the method that mobile terminal joins the joining domain set by the copyright issuer of the digital information product and obtains the copyright object from the copyright issuer, systems and related equipment. Background technique [0002] DRM is the precondition for realizing copyrighted digital information products to be sold through the network. The use of digital copyright protection technology can effectively prevent illegal copying, copying and transmission of digital information products through networks and computers. The copyright issuer (Rights Issuer, RI) of digital information products encrypts the digital information and uploads it to the network, and the user downloads the encrypted digital information to the copyright agent (DRM Agent) server on the terminal device. If the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/00H04L9/32
CPCH04L63/20G06F21/10
Inventor 李益民石国欣
Owner HUAWEI TECH CO LTD
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