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:
May. 16, 2000
Filed:
Nov. 12, 1997
Applicant:
Inventors:
Andreas Curiger, Dallas, TX (US);
Wendell Little, Denton, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380265 ; 708-7 ; 708103 ; 708277 ; 708490 ; 708501 ; 380 44 ; 380 30 ; 380264 ;
Abstract
Circuitry which performs modular mathematics to solve the equation C=M.sup.k mod n and n is performed in a manner to mask the exponent k's signature from timing or power monitoring attacks. The modular exponentation function is performed in a normalized manner such that binary ones and zeros in the exponent are calculated by being modulo-squared and modulo-multiplied.