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:
Jul. 27, 2021
Filed:
Mar. 23, 2016
Centro DE Pesquisas Avançadas Wernher Von Braun, Campinas, BR;
Alexander Peter Sieh, Campinas, BR;
Henrique Uemura Okada, Marília, BR;
CENTRO DE PESQUISAS AVANCADAS WERNHER VON BRAUN, Sao Paulo, BR;
Abstract
A RFID tag (), reader () and protocol allow a protected read operation in a two-step tag authentication with cipher-block cryptography. A challenge-response mechanism using a shared secret symmetric key () for tag authentication includes a challenge and information to read data from a tag's memory (). Tag's response to the challenge-response mechanism includes the response to the reader's challenge and data from the tag's memory. A method embeds a protected write operation in a four-step reader authentication with cipher-block cryptography. The protocol allows a challenge-response mechanism using the shared secret symmetric key for reader authentication including a challenge and information to write data to the tag's memory. Reader's response to the challenge-response mechanism includes a response to the tag's challenge and data for writing to the tag's memory. Authenticated read and write data may be in plaintext, message authentication code (MAC)-protected, encrypted, or both encrypted and MAC protected.