基于版权保护的数字内容安全交易系统的设计与实现

Design and implementation of digital content secure trade based on copyright protection

现在网上传播的数字内容存在着大量的盗版和侵权问题,对数字内容的网上交易进行版权保护,成为一个迫切需要解决的问题。系统采用了一种新的许可证密钥产生、分配和认证的方法,使内容许可证跟用户的机器指纹和用户的个人信息绑定。数字内容采取高强度的对称密钥算法加密,只能在本地机器按照内容许可证的要求进行解密及可控使用,从而在整个数字内容生命周期实行版权保护,消除了一般版权保护系统的缺点。

At present, a great deal of pirate and tort exists in network digital content trade. This question should be solved at once. In this system, a new way ofconstructing and validating license key is designed. It makes license file binding with user＇s machine fingerprint and user information. Digital content is encrypted with 64 bits symmetrical key and the encrypted content is decrypted and used according with demanding of license file. The system realizes copyright protection in the whole life of digital content and eliminates the flaw in the common digital rights management system.