Research And Application Of Digital Watermarking In The Mobile Office

With the rapid development of computers and the Internet, in addition to the increasing popularity of computers, the emergence of a variety of mobile handheld devices to the people a new way of life work. With the country in 2009 formally 3G mobile network into commercial operation, more and more popular mode of mobile office. But the mobile office document to be transmitted via network, but the network there are some criminal elements, to the benefit of a variety of piracy and illegal tampering activities, enterprises and individuals to the government caused great economic losses. In order to solve security problems, all kinds of mobile office system has been developed, they have strengthened the mechanism for secure transmission, makes a variety of file transfer to a certain security, but these applications are based on overall system security, that is expected to create a "isolated" environment, the user is not illegal intrusion, so that legitimate users to the security office inside, but there is no absolute world security environment, there are still trespass incident, the file will still be tampered with and embezzlement. Based on this, this document itself from the start of electronic transmission, digital watermarking technology to its processing, making illegal tampering and misappropriation have basis to effectively protect the safety of mobile office to reduce the losses caused by corporate individuals.This thesis made the following aspects of work:①Describes the current range of mobile security issues and analysis of the corresponding solutions, in this based on the proposed transfer of electronic files on the mobile digital watermarking program;②Select the mobile office is the most common of the Word text documents as research objects, text documents, analyzes the watermark embedding them with cryptography and error control information together;③Describes the development of a number of related mobile content, select the Microsoft window mobile 6.0 operating system as an experimental platform to achieve its above the watermark on the Word document processing model design, gives a detailed analysis of the design process, experimental results show that model can be better protected Word document transmission in the network security.