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Record number: 1, Textual support number: 1 DEF

An informal presentation of a formal security policy model.  1, fiche 1, Anglais, - security%20policy%20model

Record number: 1, Textual support number: 1 OBS

Formal Security Policy Model. A mathematically precise statement of a security policy. To be adequately precise, such a model must represent the initial state of a system, the way in which the system progresses from one state to another, and a definition of a "secure" state of the system. To be acceptable as a basis for a TCB, the model must be supported by a formal proof that if the initial state of the system satisfies the definition of a "secure" state and if all assumptions required by the model hold, then all future states of the system will be secure. Some formal modeling techniques include: state transition models, temporal logic models, denotational semantics models, algebraic specification models. An example is the model described by Bell and LaPadula....  1, fiche 1, Anglais, - security%20policy%20model

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol