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:
Jan. 07, 2014
Filed:
Sep. 07, 2007
Wessel Harm Lubberhuizen, Delden, NL;
Wessel Harm Lubberhuizen, Delden, NL;
Greenpeak Technologies B.V., , NL;
Abstract
An Encryption processor is disclosed comprising an S-box unit, a byte permutation unit, a MixColumns unit and a key expansion unit. In an embodiment the byte permutation unit comprises a data input terminal for receiving input data, two or more row processors, each row processor having an input coupled to the input terminal and an output, and a clock gating circuit for generating for each of the two or more row processors a gated clock signal. Furthermore, a clock gated key expansion unit is disclosed. By clock gating, the power consumption of the processor is reduced which extends the battery life time in battery powered devices.