The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1993
Filed:
Apr. 01, 1991
International Business Machines Corporation, Armonk, NY (US);
Abstract
Method and apparatus for authenticating users (entities) of a computer network based on the entity's identification is described. Keys for each party of a potential session are derived by projections stored at each party's location. The projections are based on a partially computed function which can be in encryption by some key of the user identification or a multivariable polynomial or other function which is partially evaluated for one user's identification. Each user evaluates his projection with the other user/party's identification. The evaluated quantities are compared using a validation routine. The method requires only one basic piece of information, the projection to be distributed to each user, and does not need specific keys for specific users (or other users' information stored in one user's memory or global network). The method enables adding users to the system directory in a flexible way, without having to notify users of the addition. The method applies to communication heirarchies and inter-domain communication, as well.