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:
May. 13, 2014
Filed:
Sep. 04, 2008
Stefan Katzenbeisser, Eindhoven, NL;
Wilhelmus P. A. J. Michiels, Eindhoven, NL;
Paulus M. H. M. A. Gorissen, Eindhoven, NL;
Aweke N. Lemma, Eindhoven, NL;
Mehmet U. Celik, Eindhoven, NL;
Stefan Katzenbeisser, Eindhoven, NL;
Wilhelmus P. A. J. Michiels, Eindhoven, NL;
Paulus M. H. M. A. Gorissen, Eindhoven, NL;
Aweke N. Lemma, Eindhoven, NL;
Mehmet U. Celik, Eindhoven, NL;
Irdeto Corporate B.V., Hoofddorp, NL;
Abstract
A system for cryptographic processing of content comprises an input for receiving the content. A plurality of look-up tables represents a white-box implementation of a combined cryptographic and watermarking operation. The look-up tables represent processing steps of the combined cryptographic and watermarking operation and the look-up tables being arranged for being applied according to a predetermined look-up scheme. The look-up scheme prescribes that an output of a first look-up table of the plurality of look-up tables be used to generate an input of a second look-up table of the plurality of look-up tables. The combined cryptographic and watermarking operation comprises a cryptographic operation and a watermarking operation. A control module looks up values in the plurality of look-up tables in dependence on the received content and in accordance to the look-up scheme, thereby applying the combined cryptographic and watermarking operation to the content.