Patent · US Active

System and method for comparison of private values

US7869598B2 · kind B2 · utility

24Cited by

0References

32Claims

0Family size

Assignee

SAP AG · DE

Inventor

Florian Kerschbaum · Walldorf, DE

Key dates

Filing date	Dec 18, 2006
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Nov 10, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/46
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An embodiment includes a first system for computing a contribution to a greater-than comparison of a first private value and a second private value. The first system includes: an accessing unit configured to access the first private value; a processor unit configured to compute a first encrypted value by encrypting the first private value, compute a decrypted value by decrypting a third encrypted value, and compute a contribution to a result of the greater-than comparison by checking a relation between the decrypted value and a modulus value; and a communication unit configured to send the first encrypted value to a second system and to receive the third encrypted value.

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