Confirms that a code assembly originates in the global assembly cache (GAC) as evidence for policy evaluation. This class cannot be inherited.
See Also: GacInstalled Members
The presence of System.Security.Policy.GacInstalled evidence produces a System.Security.Permissions.GacIdentityPermission in the grant set. If there is a System.Security.CodeAccessPermission.Demand for System.Security.Permissions.GacIdentityPermission, the System.Security.Permissions.GacIdentityPermission that corresponds to the System.Security.Policy.GacInstalled evidence is compared with the demanded permission.