基于Unicode编码文本水印的分密级公文系统

Classification Document System Based on Unicode Text Watermarking

介绍公文系统基本安全管理方法,对传统的文本数字水印技术进行分析,提出一种基于Unicode编码的文本数字水印算法,采用密钥对水印信息加密后通过异或运算嵌入到文本Unicode编码中,同时附加密级编码、奇偶校验码和纠错码构建水印文本编码,实现公文分密级和全过程的安全管理,在定性分析中发现算法具有广泛适用性和较强安全性.

The method of document system security management is introduced and traditional text fragile watermark technology is analyzed firstly, and then proposes a new text fragile watermarking algorithm based on Unicode. And using security classification code, parity check code and error correction code to build the watermark text coding for achieving document security classification and the entire process of safety management. At last the qualitative analysis shows the algorithm has the good applicability and safety.