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.

Date of Patent:
Jul. 08, 2025

Filed:

Jun. 28, 2023
Applicant:

Synopsys, Inc., Sunnyvale, CA (US);

Inventors:

Nimisha Limaye, Jersey City, NJ (US);

Michael Kenneth Bowler, Ottawa, CA;

Assignee:

SYNOPSYS, INC., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/60 (2013.01); G06F 17/16 (2006.01); G06F 21/72 (2013.01);
U.S. Cl.
CPC ...
G06F 21/602 (2013.01); G06F 17/16 (2013.01); G06F 21/72 (2013.01);
Abstract

A method includes: receiving an input message; computing values based on the input message; initializing an accumulator value; iterating, by a processor, through bits of a secret key, each iteration including: selecting a specified number of next most significant bits (MSBs) of the secret key as a bitstring of selected bits; selecting, randomly, one of the values computed from the input message; in a case where all bits of the bitstring of selected bits of the secret key have values of zero: updating the accumulator value based on the specified number of the next MSBs; and performing a dummy operation based on the accumulator value and the randomly selected one of the values computed from the input message; generating an output message based on a value stored in the accumulator value after iterating through the bits of the secret key.


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