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. 07, 2012
Filed:
Jan. 26, 2006
Alexander Reznik, Titusville, NJ (US);
Akinlolu Oloruntosi Kumoluyi, Marietta, GA (US);
Guodong Zhang, Farmingdale, NY (US);
Prabhakar R. Chitrapu, Blue Bell, PA (US);
Gregory S. Sternberg, Mt. Laurel, NJ (US);
Yogendra C. Shah, Exton, PA (US);
Alain Charles Louis Briancon, Poolesville, MD (US);
Chunxuan YE, King of Prussia, PA (US);
Alexander Reznik, Titusville, NJ (US);
Akinlolu Oloruntosi Kumoluyi, Marietta, GA (US);
Guodong Zhang, Farmingdale, NY (US);
Prabhakar R. Chitrapu, Blue Bell, PA (US);
Gregory S. Sternberg, Mt. Laurel, NJ (US);
Yogendra C. Shah, Exton, PA (US);
Alain Charles Louis Briancon, Poolesville, MD (US);
Chunxuan Ye, King of Prussia, PA (US);
InterDigital Technology Corporation, Wilmington, DE (US);
Abstract
A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.