Security Mechanism to Protect the Integrity of Web Documents

Web documents which stored in many existed Web servers include Web pages and many resource files such as audios, videos, photos, etc. They are easy to be modified or replaced without necessary secure mechanism. The paper emphasized on the research and implementation of integrity protection mechanism on Web pages by customized middleware which embedded in Web server. The middleware identified the Web document requested by user in time and recovered the modified one according to its importance, which was efficiency to prevent modified documents and Trojan horse scripts from diffusing maliciously. Experiments' results showed that the mechanism could improve the security and reliability of Web system.