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:
Sep. 03, 2013
Filed:
Aug. 12, 2010
Chang Shu, San Jose, CA (US);
Heng Tang, San Jose, CA (US);
Sean Lee, Fremont, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A system to perform Montgomery multiplication includes a first multiplier array configured to multiply w bits of an operand X by W bits of an operand Y, where w and W are integers and w is less than W. A second multiplier array is configured to multiply w bits of an operand Q by W bits of a modulo M. An adder array is configured to add outputs of the first and second multiplier arrays to generate a sum. A partial sum array is configured to store a left portion of the sum. A memory is configured to store a right portion of the sum. Q computation logic includes a lookup table and a half-multiplier that compute W bits of the operand Q sequentially in cycles or cycles. The W bits of the operand Q are stored in the fourth buffer for use by subsequent W×W operations.