基于网络发行的PDF文档版权保护系统的设计与实现

针对目前文档版权管理领域的需求,提出了基于网络发行的PDF文档版权保护整体解决方案.在系统中,采用了一种新的基于机器指纹的版权保护方法,使内容许可证与用户的机器指纹及用户的个人信息绑定.PDF文档内容采用高强度的对称密钥算法加密,客户端采用Acrobat插件开发技术来实现,最终PDF文档得到了内容级的加密保护,并且文档只能在本地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.

Design and Implementation of Copyright Protection System for Internet-Published PDF Documents

According to the need on the field of documents copyright management,a solution of integrity copyright protection for internet-published PDF documents was presented.In this solution,a new protection technology based on computer fingerprint is implemented to bind the content license with the user's computer fingerprint and individual information.Furthermore,the content of PDF is encrypted with 256 bits symmetrical key and the client sever is achieved by Acrobat plug-in program.Finally,the PDF document realized the content-encrypted protection and can be decrypted and used according with the demanding of the content license.In this way,The system realized copyright protection in the whole life of digital content.