Abstract:

With the rapid development of information technology and the wild use of smart devices, the traditional publishing industry is shifting to the new publishing industry. Pictures, books, magazines, newspaper and some other special document transmitting on the network has become very common. As the network is easy to copy and spread text resources, the legitimate interests of users vulnerable to abuse. To solve this problem, copyright protection technology which is represented by the text watermark came into being. This paper uses fault tolerance principle to design a new algorithm. To some extent, word processing software can ignore some faults in the documents. A new algorithm has been designed according to this. Using this algorithm, the copyright information can be kept in the reserved words of files. Users are allowed to properly use the document, and the embedded watermark can be extracted obtain and verify the copyright.

Key words: digital text watermarking, fault tolerant, Office, binary file formats, chaotic encryption