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. 07, 2015
Filed:
Jul. 10, 2013
Martin Haerterich, Wiesloch, DE;
Florian Kerschbaum, Karlsruhe, DE;
Patrick Grofig, Karlsruhe, DE;
Mathias Kohler, Stutensee, DE;
Andreas Schaad, Karlsruhe, DE;
Axel Schroepfer, Rheinstetten, DE;
Walter Tighzert, Heidelberg, DE;
Martin Haerterich, Wiesloch, DE;
Florian Kerschbaum, Karlsruhe, DE;
Patrick Grofig, Karlsruhe, DE;
Mathias Kohler, Stutensee, DE;
Andreas Schaad, Karlsruhe, DE;
Axel Schroepfer, Rheinstetten, DE;
Walter Tighzert, Heidelberg, DE;
SAP SE, Walldorf, DE;
Abstract
Methods, systems, and computer-readable storage media for selecting columns for re-encryption in join operations. In some implementations, actions include determining a first column and a second column to be joined, receiving a first key corresponding to the first column and a second key corresponding to the second column, receiving a first rank associated with the first key and a second rank associated with the second key, selecting the second column for re-encryption based on the first rank and the second rank, and providing the first column, the second column, and the first key for performing a join operation, the second column being re-encrypted based on the first key.