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The RBAC (Role-Based Access Control) is an important information security model, and it is also hot issue in the domain of information security in recent years. A security model based on user group and role administration have been given out in the paper which is according to the practical application of the problem that is the actualization of role administration in our school informationization application system, and from the angle of guarantee the information security. The rules in the new model are reasonable and secure by analysis. It will play a positive role to construct information security model, and also to promote the general role administrative security model. KeywordsInformation Security Model; BLP Model; Biba Model; RBAC Model; Role Administration; User Group

A Security Model Based on User Group and Role Administration