Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2006-10-31
2006-10-31
Barrón, Jr., Gilberto (Department: 2132)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C726S027000
Reexamination Certificate
active
07131143
ABSTRACT:
An evidence-based policy manager generates a permission grant set for a code assembly received from a resource location. The policy manager executes in a computer system (e.g., a Web client or server) in combination with the verification module and class loader of the run-time environment. The permission grant set generated for a code assembly is applied in the run-time call stack to help the system determine whether a given system operation by the code assembly is authorized. Both code assemblies and evidence may be received from a local origin or from a remote resource location via a network (e.g., the Internet). Evidence having different levels of trust may be evaluated in combination so that a permission grant set is associated only with trusted code assemblies. The policy manager may comprise execution modules for parsing a security policy specification, generating one or more code hierarchies, evaluating membership of the received code assembly in one or more code groups, and generating a permission grant set based upon this membership evaluation.
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Fee Gregory Darrell
Kohnfelder Loren M.
LaMacchia Brian A.
Barrón Jr. Gilberto
Kim Jung
Lee & Hayes PLLC
Microsoft Corporation
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