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. 05, 2011
Filed:
Nov. 29, 2007
Chris P Vanden Berghe, Hong Kong, HK;
Tadeusz J Pietraszek, Rueschlikon, CH;
Jan Leonhard Camenisch, Thalwill, CH;
Dieter Sommer, Zurich, CH;
Chris P Vanden Berghe, Hong Kong, HK;
Tadeusz J Pietraszek, Rueschlikon, CH;
Jan Leonhard Camenisch, Thalwill, CH;
Dieter Sommer, Zurich, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer implemented method for performing a privacy enhanced comparison of a plurality of data sets includes allocating a private encryption key to each of the data sets; performing an encryption operation for each of the data sets, the encryption operation comprising generating a commutatively encrypted data set of the respective data set, wherein the commutatively encrypted data sets are generated by successively applying a keyed commutative encryption function on the respective data set with the private encryption key of the respective data set itself and with the private encryption keys of the other data sets; and comparing the commutatively encrypted data sets.