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:
Oct. 29, 2019
Filed:
Aug. 09, 2017
Cryptography Research, Inc., Sunnyvale, CA (US);
Matthew Pond Baker, San Francisco, CA (US);
Elena Trichina, Aix-en-Provence, FR;
Jean-Michel Cioranesco, Paris, FR;
Michael Hutter, Walnut Creek, CA (US);
Cryptography Research, Inc., Sunnyvale, CA (US);
Abstract
An integrated circuit may implement a masked substitution box that includes a counter that generates counter values. An input mask component may generate unmasked input values based on a combination of respective counter values and an input mask value. Furthermore, a substitution function component may receive the unmasked input values and may generate output values based on respective unmasked input values and a substitution function. An output mask component may generate masked output values based on a combination of respective output values and an output mask value. The masked output values may be stored at memory elements.