| 摘要 |
A method to providing multilevel security for a data object requested by a workstation user includes providing a security label for the data object, associating security rules including a security clearance level for the data object with the security label, binding the security label to the data object, validating the correctness of the security label, associating the user's security clearance level with at least one user certificate, verifying the at least one user certificate, and determining whether the user has clearance to receive the requested data.
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