Electronic Document Security Sharing System Based on Lineage Mechanism

That ensuring the electronic documents security is the key to the protection of internal information. With the extent of file sharing enlarged, it is hard to keep balance between the security and sharing. To achieve this goal, file tracing and audit, dynamic adjustment of right must be solved better. In this paper, a electronic document security system based on lineage mechanism is proposed,it support dynamic adjust right in mutable environment. It implement the file trace through recording the access logs and path of transmission. In fact, it implement one of the UCON models: pre-authorization with post update.