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:
Feb. 21, 2017
Filed:
Dec. 26, 2013
Nxp B.v., Eindhoven, NL;
Philippe Teuwen, Etterbeek, BE;
Ventzislav Nikov, Haasrode, BE;
Peter Maria Franciscus Rombouts, Sint-Katelijine-Waver, BE;
NXP B.V., Eindhoven, NL;
Abstract
A method of securely implementing functions in a secure software application, including: determining, by a processor, two functions to be implemented by the secure software application; generating a first function lookup table; encrypting the first function lookup table; sorting the first function lookup table by encrypted operand; generating a second function lookup table; encrypting the second function lookup table; sorting the second function lookup table by encrypted operand; generating a flattened lookup table from a combination of the encrypted first and second function lookup tables; permutating the flattened table indices e.g. by use of public key cryptography encryption; and sorting the flattened table by the permutated flattened table indices.