Design And Implementation Of Digital Watermarking-Based Website Document Protection Feature

With the continuous development of the Internet and the popularity of computer technology, people demand for knowledge sharing increasingly strong, the website has interactive online document sharing capabilities and more and more, many online collaboration sites to provide users with online editing, add annotations and other functions, document content is generated by co-authoring the outcome of the relevant collaboration of users, such a document should be subject to intellectual property protection. However, due to the current rapid development of online electronic documents, documents related to intellectual property protection laws and regulations are not perfect, network users on-line documentation copyright awareness is not enough, resulting in serious violations online documentation. Since electronic documents with respect to the traditional print has easy to modify, easy to copy the characteristics, the document quickly spread in the network, and it is difficult to control and traceability, so the document content owners copyright violations.Based on the study online document collaboration and document sharing platform content protection based on user needs and web applications for the characteristics proposed based on digital watermarking site document protection. This functionality through the document page into picture form to protect the contents of the document will not be free to copy and tampering. In this process, the need for image quality and resolution adjusted accordingly. Meanwhile, embedding hidden watermarks and visible type watermark in the document. Among them, the relevant information hidden watermark major recording documents and website owner when a malicious attacker to extract the document image to still be able to retain copyright piracy publish information document; visible type watermark major record file downloads and buyers of information and It provides documentation portion of the input message authentication code information to prevent vandals did not extract document contents copyright information screen at the same time by way of a snapshot of the data integrity verification. Among them, the hidden watermark can be adaptively adjust embedding strength, and thus ensure the quality of the host larger image and watermark image. After experimental testing, the whole process can function properly on a web server running and copyright information can save a document, effective protection of content security and copyright documents.