Method and apparatus for detecting consistency of digital content

Abstract

The invention discloses a method for detecting the consistency of digital contents. The method comprises: extracting the characteristic value from original digital contents, extracting the characteristic value from digital contents which need detecting, comparing the characteristic value of the original digital contents and the characteristic value of digital contents which need detecting, and determining whether the digital contents which need detecting are consistent with the original digital contents or not according to comparison results. The invention also discloses a device for detecting the consistency of the digital contents simultaneously. The digital contents which need detecting can be determined to be illegal digital contents or not through adopting the invention according to user strategies, the detecting process does not need to transform a terminal, the user experience is good, and the safety is higher.

Description

technical field [0001] The invention relates to the technical field of digital copyright management, in particular to a method and device for detecting consistency of digital content. Background technique [0002] Digital Rights Management (DRM) mainly controls the use of digital content through rights restriction and content protection schemes, and protects the legitimate rights and interests of content owners. Currently, digital rights management provides the following two technologies: [0003] Existing technology one [0004] Encryption / authorization technology, on the server side, the digital content issuer (Content Issuer, CI) encrypts and packages the digital content, and sends the encrypted digital content data package; the license server (RightsIssuer, RI) is responsible for issuing and Licenses corresponding to digital content, including content encryption keys and corresponding permissions. On the client side, the device can normally use the purchased digital c...

AI Technical Summary

Problems solved by technology

[0006] 1. This technology requires terminal support during implementation, so it can only be used on some specific terminals that can support this technology, and cannot be guaranteed to be used on all terminals, thus limiting the scope of users. In addition, if users have There are several different terminals, and one of them does not support this technology, which will result in the inability to share the digital content required by users among different terminals, thereby affecting user experience

[0007] 2. The coupling degree between this technology and the existing system is relatively large when it is implemented, and the existing system needs to be greatly modified, and the cost is relatively high

[0008] 3. The security is relatively low. Once the encrypted content data packet is cracked by the attacker, the attacker can spread the original digital content without any control

[0014] 3. After the digital content is embedded with a digital watermark, it will cause distortion of the digital content, and the size of the digital content will become larger, thus affecting the user experience

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