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. 13, 2002
Filed:
Jan. 11, 2001
Matthew Scott McGregor, Huntington Beach, CA (US);
Thuan P. Le, Montebello, CA (US);
Rainbow Technologies, Inc., Irvine, CA (US);
Abstract
A computationally efficient multiplication method and apparatus for modular exponentiation. The apparatus uses a preload register, coupled to a multiplier at a second input port via a KN bit bus to load the value of the “a” multiplicand in the multiplier in a single clock pulse. The “b” multiplicand (which is also KN bits long) is supplied to the multiplier N bits at a time from a memory output port via an N bit bus coupled to a multiplier first input port. The multiplier multiplies the N bits of the “b” multiplicand by the KN bits of the “a” multiplicand and provides that product at a multiplier output N bits at a time, where it can be supplied to the memory via a memory input port.