Method for performing group exclusion in hierarchical group structures
September 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of providing digital signatures Cryptographic communications system and method High speed data base search system System for storing and distributing keys for cryptographically protected communication Identity verification method and apparatus Subscriber inventory network Communications format for a subscription television system permitting transmission of individual text messages to subscribers Secure dial access to computer systems Patent #: 5003595 InventorsAssigneeApplicationNo. 589924 filed on 09/28/1990US Classes:707/9, Privileged access340/5.74, Access to electrical information380/30, Public key713/167Object protectionExaminersPrimary: Gregory, Bernarr E.Attorney, Agent or FirmInternational ClassesH04L 009/32H04L 009/30 AbstractA method for denying a first group access to a system resource wherein a second group is selected such that the first group is a subgroup of the second group. Access is granted only to those members of the second group who do not derive their membership in the second group through their membership in the first group.Other References
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