Patent · US Active

Access control for encrypted query processing

US9547720B2 · kind B2 · utility

9Cited by

6References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

Isabelle Hang · Darmstadt, DE
Florian Kerschbaum · Walldorf, DE
Martin Haerterich · Wiesloch, DE
Mathias Kohler · Blankenloch, DE
Andreas Schaad · Bruchsal, DE
Axel Schroepfer · Heidenau, DE
Walter Tighzert · Heidelberg, DE

Key dates

Filing date	Dec 24, 2014
Grant date	Jan 17, 2017
Priority date	—
Expiry date	Aug 7, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/104
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Methods, systems, and computer-readable storage media for enforcing access control in encrypted query processing. Implementations include actions of obtaining a set of user groups based on the user credential and a user group mapping, obtaining a set of relations based on the query, obtaining a set of virtual relations based on the set of user groups and the set of relations, receiving a first rewritten query based on the set of virtual relations and a query rewriting operation, encrypting the first rewritten query to provide an encrypted query, and transmitting the encrypted query to at least one server computing device over a network for execution of the encrypted query over access controlled, encrypted data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.