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Secure dial access to computer systems Patent #: 5003595
ApplicationNo. 589924 filed on 09/28/1990
US Classes:707/9, Privileged access340/5.74, Access to electrical information380/30, Public key713/167Object protection
ExaminersPrimary: Gregory, Bernarr E.
Attorney, Agent or Firm
International ClassesH04L 009/32
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.