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针对强制访问控制模型BIBA安全性高但实现开销大的问题,文中采用将格引入基于角色访问控制模型的方法实现BIBA,进行了形式化的论述。通过证明表明,该方法在保证BIBA强制访问控制高安全性的同时又具有角色模型的灵活方便。
Aiming at the problem of mandatory access control model (BIBA) security and high cost of implementation, BIBA is introduced into the BIBA based on the role-based access control model and formalized. The results show that this method has the flexibility of role model while guaranteeing the high security of BIBA mandatory access control.