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. 30, 2022
Filed:
Mar. 15, 2017
Visa International Service Association, San Francisco, CA (US);
Mustafa Top, San Ramon, CA (US);
Yuexi Chen, Foster City, CA (US);
Visa International Service Association, San Francisco, CA (US);
Abstract
A method preventing relay attacks between first and second devices is disclosed. The method includes providing, by a first device, a command message, receiving a request message and providing a response message to a second device. The time period between the receipt of the command message and the transmission of the response message by the first device is compared to another time period between the time when the command message was sent and the response message was received by the second device. If those times substantially match, then the first device can have assurance that a relay attack is not occurring.