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:
Jun. 13, 2006
Filed:
Jun. 28, 2002
Jerome A. Solinas, Westminster, MD (US);
Jerome A. Solinas, Westminster, MD (US);
The United States of America as represented by the National Security Agency, Washington, DC (US);
Abstract
A method of generating a cryptographic key in an authenticated manner using coefficient splitting. Select a prime number p and an elliptic curve of either a first class or a second class. Select a point P. The first user generates r, w, and R=rP and W=wP via coefficient splitting. The second user generates r, w, and R=rP and W=wP via coefficient splitting. After the users have exchanged the points R, W, R, W, the first user generates c, g, and cW, and gRvia coefficient splitting, and the second user generates c, g, and cWand gRvia coefficient splitting. Each user then sums the corresponding results to form K and derives the cryptographic key from K in the same user-definable manner. An unauthenticated key exchange method is also presented.