Digital certificate-based novel digital copyright protection method and device

Abstract

The invention provides a digital certificate-based novel digital copyright protection method and a digital certificate-based novel digital copyright protection device, which are used for protecting the copyright of contents of electronic books and digital media. The device consists of a server system and a client system of a computer network service system, wherein the server system comprises an electronic book and digital media content library, a user authentication and authorization service device, a digital copyright certificate making device, a digital content encrypting device, a copyright protection data file making device, and a copyright protection data file publishment and operation service device; and the client system comprises an electronic book and digital media content storing device, a public-key certificate and corresponding private-key safety storage device, a crypto-operation device, a digital content decrypting device, a digital copyright certificate verifying device and an electronic book and digital media content display device. The invention also provides a server device and a client device for digital copyright protection. Through matching use of the two devices, the distribution and storage of the contents of the electronic books and the digital media are realized so as to realize digital copyright protection. The invention is suitable for distribution, publishment and on-line service of the contents of the electronic books and the digital media through Internet, wireless Internet and other communication networks; and the applicable contents of the digital media comprise digitalized characters, pictures, music, movies and televisions and various multimedia digital contents.

Description

【Technical Field】 [0001] The invention relates to a digital copyright protection method and device based on digital certificates. 【technical background】 [0002] With the development of the information industry, the problem of copyright protection of e-books and digital media content has become more and more prominent. This problem has severely restricted the development of the e-book and digital media publishing industry. [0003] There are many methods and devices for solving digital copyright issues, but the following problems have appeared in practical applications: [0004] 1) Binding with computer, inconvenient to use: The current digital copyright protection technology is basically achieved through computer features (such as computer CPUID, hard disk ID, etc.), combined with cryptographic technology. The disadvantage of this method is that the digital copyright cannot be authorized. To the specific owner, the mobility is poor, and the e-book or digital media content must be u...

AI Technical Summary

Problems solved by technology

[0004] 1) Binding to the computer, inconvenient to use: the current digital copyright protection technology is basically realized through computer characteristics (such as computer CPUID, hard disk ID, etc.) To the specific owner, the mobility is poor, and the e-book or digital media content must be used on a designated computer, which is inconvenient to use;

[0005] 2) The loss of the digital copyright license affects the user's use: the digital copyright license of the current digital copyright protection technology is separated from the e-book or digital media content, and the user needs to save the authorization file separately

If the digital copyright license is accidentally lost, the user will not be able to use the e-book or digital media content, and must apply for and download it separately, which is inconvenient to use and may cause repeated billing;

[0006] 3) There are security risks in encrypted e-books or digital media content: Some digital copyright protection technologies use the same key to encrypt e-books or digital media content, lacking user personalized information, once an e-book or digital media content file If it is deciphered, there will be a large-scale file security crisis;

[0007] 4) The decrypted e-book or digital media content has potential safety hazards: some digital copyright protection technologies adopt an overall decryption method when decrypting e-book or digital media content, and place all e-book or digital media content in the Decryption is carried out in the computer memory, and the decrypted e-book or digital media content is also exposed in the computer memory as a whole, which is easy to be stolen

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