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. 23, 2019
Filed:
Dec. 14, 2016
Sap SE, Walldorf, DE;
Anselme Kemgne Tueno, Erlenbach, DE;
Florian Kerschbaum, Frankfurt, DE;
SAP SE, Walldorf, DE;
Abstract
Methods, systems, and articles of manufacture are provided for oblivious order preserving encryption. A method may include: traversing, by a cloud service provider, an order preserving encryption (OPE) tree based on a result of an oblivious comparison performed by a data owner and a data client, the OPE tree having nodes that each correspond to a ciphertext of data associated with the data owner, the ciphertext of the data being stored at the cloud service provider, and a relative position of the nodes within the OPE tree corresponding to an order that is present in the data associated with the data owner; and determining, based on the traversing of the OPE tree, an OPE encoding for an input value from the data client, the OPE encoding for the input value indicative of a position of a node corresponding to the input value within the OPE tree.