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.:

US 8509441 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 13, 2013

Filed:

Jun. 10, 2010
Applicants:

Bong NO Yoon, Gyeonggi-do, KR;

Hyun Seok OH, Seoul, KR;

Inventors:

Bong No Yoon, Gyeonggi-do, KR;

Hyun Seok Oh, Seoul, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A Radio Frequency Identification (RFID) system and method are provided that includes a reader and a tag which share a predetermined secret key. The reader transmits an authentication request random number to the tag. The reader and the tag generate a Pseudorandom Noise (PN) sequence formed of a series of binary codes from an exclusive disjunction of the authentication request random number and the predetermined secret key. The tag produces an authentication response random number by performing a predetermined conversion operation for the PN sequence and transmits the authentication response random number to the reader. The reader authenticates the tag by analyzing the PN sequence and the authentication response random number.


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Yoon, Bong. (2013). Radio frequency identification system and authentication method thereof (U.S. Patent No. 8509441). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8509441

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