The Security Model Of Multi-Level Document Based On Security Label

With the proliferation of computers and office automation in-depth development, more and more confidential information appears in the form of electronic documents, electronic documents have not enough security, so that it is easy to be illegally copied and manipulated without leaving any traces. Automatic processing of electronic documents brings convenience, but also the security risks: to steal information, alter information. The contents of digital documents are faced with serious problem of information security, which is a major internal network security issue.In response to these problems and needs, this paper studied the electronic documents and electronic tags, and other related information security technology firstly; Secondly, based on the research, the use of security label, based on transparent encryption and decryption filter driver, security technologies such as virtual disk designed a security model of multi-level document based on security label and analyze the security of the model; Finally, the application security model is designed document security management system of the government intranet. The system can ensure the security index of confidentiality, integrity, validity and repudiation of electronic documents throughout the life cycle of document usage.Currently, the security model has been applied to office automation systems, not only the use of electronic documents under control rights, but also document storage security, will not be altered or illegally obtained, even if hackers get a secure electronic document, but still cannot get file.