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:
Oct. 09, 2012
Filed:
Sep. 28, 2006
Noel Mccullagh, Dublin, IE;
Michael Scott, Dublin, IE;
Neil Costigan, Carlow, IE;
Dublin City University, Dublin, IE;
Abstract
A database management system () comprises up to fifty or more workstations (), each for a user. The environment may, for example, be a hospital and the system manages medical records in a secure manner. Each user has a private key issued by a KGC (). A database controller () updates a secure database () with data and associated signatures generated by the user workstations (). Thus every record of the secure database () has a signature to provide full traceability and non-repudiation of data edits/updates. It is important for the system () that the signatures are verified on a regular basis, say every hour. Such a task would be extremely processor-intensive if the database () is large. However this is performed by a verification processor () of the system () in a much shorter time than heretofore, t+n(&Dgr;), where tis the time for one verification, n is the number of signatures, and &Dgr; is a time value which is a very small proportion of t(less than 1%).