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Patent Title: User access to objects in group based access control based on result of greatest common divisor of assigned unique prime numbers of user and object

Assignee: IBM
Patent Number: US6189036
Issue Date: 02-13-2001
Application Number:
File Date:11-05-1998

Abstract: An access control mechanism using a grouping system whereby each group is assigned a unique prime number. The resource objects to be accessed are assigned a value that is determined by multiplying all of the group prime numbers from the groups that have access to that resource. Also, each user is assigned to one or more groups and each user has an access number that is a product of the prime numbers assigned to each group. When a particular user desires access to a particular resource object, the greatest common divisor between the resource product and the user product is determined. If the resulting greatest common divisor is greater than one, then the user is allowed access. If the greatest common divisor is one (the lowest prime), the user is denied access.


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IBM Pledge dated 1/11/2005