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. 02, 2024
Filed:
Dec. 05, 2022
Applicant:
Cryptography Research, Inc., San Jose, CA (US);
Inventor:
Michael Tunstall, Walnut Creek, CA (US);
Assignee:
CRYPTOGRAPHY RESEARCH, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2022.01); H04L 9/08 (2006.01); H04L 9/30 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/003 (2013.01); H04L 9/0825 (2013.01); H04L 9/302 (2013.01); H04L 9/3249 (2013.01); H04L 2209/046 (2013.01);
Abstract
Aspects of the present disclosure involves receiving an input message, generating a first random value that is used to blind the input message to prevent a side-channel analysis (SCA) attack, computing a second random value using the first random value and a factor used to compute the Montgomery form of a blinded input message without performing an explicit Montgomery conversion of the input message, and computing a signature using Montgomery multiplication, of the first random value and the second random value, wherein the signature is resistant to the SCA attack.