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:
Aug. 16, 2022
Filed:
Oct. 08, 2018
Applicant:
Cryptography Research, Inc., Sunnyvale, CA (US);
Inventors:
Michael Alexander Hamburg, San Franciso, CA (US);
Michael Tunstall, Walnut Creek, CA (US);
Assignee:
Cryptography Research, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 9/30 (2006.01); H04L 9/06 (2006.01); G06F 21/60 (2013.01);
U.S. Cl.
CPC ...
H04L 9/0869 (2013.01); G06F 21/602 (2013.01); H04L 9/0618 (2013.01); H04L 9/3006 (2013.01); H04L 2209/046 (2013.01);
Abstract
Systems and methods for performing modular inversion operations in a manner protected from external monitoring attacks. An example method comprises: determining, by a processor, a first masked value based on a public cryptographic key and a first random integer value; determining a second masked value based on the public cryptographic key and a second random integer value, and determining, based on the first masked value and the second masked value, a private cryptographic key represented by a modular inversion of the public cryptographic key.