Patent · US Active

Searchable encryption for infrequent queries in adjustable encrypted databases

US9342707B1 · kind B1 · utility

9Cited by

28References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

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

Key dates

Filing date	Nov 6, 2014
Grant date	May 17, 2016
Priority date	—
Expiry date	Feb 10, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/2455
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Methods, systems, and computer-readable storage media for selecting columns for selecting encryption to perform an operator during execution of a database query. Implementations include actions of determining a current encryption type of a column that is to be acted on during execution of the database query, the column storing encrypted data, determining a minimum encryption type for performance of the operator on the column, selecting a selected encryption type based on the current encryption type, the minimum encryption type, and a budget associated with the column, and performing the operator based on the selected encryption type.

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