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:
Jul. 10, 2001
Filed:
Dec. 22, 1999
Applicant:
Inventors:
Assignee:
Entrust Technologies Limited, Ottawa, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/32 ; H04L 9/08 ;
U.S. Cl.
CPC ...
H04L 9/32 ; H04L 9/08 ;
Abstract
A method and apparatus for secure group communication detects the deletion of a member of the group and uses the detected deletion to update the security credentials of a group by updating a repository containing credentials of members of a group. Alternatively, updating of the security credentials may be performed by sending a group credential deletion request for a member that has been deleted from the group so that the member deletes a stored copy of the group security credential.