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:
Nov. 03, 2009
Filed:
Jan. 10, 2003
Applicants:
Ronald L. Shaffer, Ii, Elgin, IL (US);
Michael W. Bright, Arlington Heights, IL (US);
Inventors:
Ronald L. Shaffer, II, Elgin, IL (US);
Michael W. Bright, Arlington Heights, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A transmitting device () generates a message (). The message has a message length () and comprises message data (). A key input () is identified, and a message authentication key () is derived based on the key input and the message length. Based on the message authentication key and the message data, a message authentication code () is derived, which is used to authenticate the message.