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:
Sep. 23, 2014
Filed:
Mar. 23, 2010
Michael Braun, München, DE;
Michael Braun, München, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for the authentication of an RFID tag uses an asymmetric cryptography method which ensures protection against the recycling of authentication RFID tags and needs no deactivation of the corresponding RFID tag for this purpose. To this end, the certificate of an RFID tag to be checked is not stored on the RFID tag but is stored physically separately from the RFID tag. Firstly, the RFID reader reads the certificate of the RFID tag to be checked before the challenge-response protocol is carried out successfully with the RFID tag to be checked. Consequently, an RFID tag can be reused for authentication only when the certificate relating to this RFID tag is known.