Abstract:

Chinese Wall model can express the dynamic security policy which keeps changing at runtime, but it can only applied in a limited area. To make the model can express the dynamic policy and applied to a extensive area as well, based on an open synthetical security model(OSSM), an implement method of Chinese Wall model is proposed. In this method, a dynamic accumulative role(DAR) is built to record the necessary historical access, and then, based on both the security policy and historical access, the response to the current access request is made to meet the dynamic of the policy. The result shows that this method improves the flexibility of security model and keeps its integration as well.

Key words: Information security, Chinese Wall model, open synthetical security model, dynamic security policy