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:
Apr. 20, 2004
Filed:
Aug. 20, 1999
Applicant:
Inventors:
Assignee:
Orga Kartensysteme GmbH, Paderborn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 ;
U.S. Cl.
CPC ...
H04L 9/00 ;
Abstract
A method for the execution of an encryption program for the encryption of data in a microprocessor-based portable data carrier is described, with the encryption program comprising several parallelisationable subprograms. According to the invention the serial order of execution of at least two subprograms is randomly permuted in the execution of the encryption program under the consideration of at least one random number.