
US Patent No: 5,113,442
Number of patents in Portfolio can not be more than 2000
Method and apparatus for providing access control in a secure operating system
Stats
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May 12, 1992
Issued date -
Mar 6, 1989
filing date -
07/319,345
serial no -
Expired
status
Importance
Abstract
A method, and an operating system utilizing this method, for controlling access rights among a plurality of users to a plurality of secure objects. Each user is provided a user identification number which is prime and each secure object is provided an access code which comprises a value that is a product of the user identification numbers of all users having the same access rights to that secure object. In response to a request by a user for access to a secure object, the access code for that secure object is divided by the user identification number of the requesting user. Access rights of the user to the requested secure object are determined based on whether the result of the division yields a zero remainder.
First Claim
Related Publications
International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,644,543 Forward error correction hardware for a data adaptor | 12 | 1984 | |
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| 4,658,292 Enciphering key distribution system for subscription TV broadcast or catv system | 70 | 1983 | |