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. 08, 2011
Filed:
Jun. 24, 2008
Shinya Yamamura, Fukuoka, JP;
Shinya Yamamura, Fukuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An authentication method is disclosed that makes the identification information of an object public and performs authentication in referring, from the identification information, to the information of the object corresponding to the identification information. The method includes generating a third value through a predetermined operation of a temporary first value generated every time the identification information is referred to and a temporary second value generated for a referrer to the identification information; encrypting the third value by first and second different encryption methods; decrypting the third value encrypted by the first encryption method in a tag device attached to the object; and decrypting the third value encrypted by the second encryption method in an apparatus managing the information of the object, and comparing the third value decrypted in the apparatus with the third value decrypted in the tag device, thereby verifying the relationship between the object and the referrer thereto.