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:
Oct. 03, 2023
Filed:
Aug. 13, 2019
Visa International Service Association, San Francisco, CA (US);
Jalpesh Chitalia, Castro Valley, CA (US);
Eduardo Lopez, Menlo Park, CA (US);
Christian Flurscheim, Walnut Creek, CA (US);
Sayeed Mohammed, Foster City, CA (US);
Christian Aabye, Foster City, CA (US);
Christoffel Jacobs, Pleasanton, CA (US);
Phillip Lavender, Foster City, CA (US);
VISA INTERNATIONAL SERVICE ASSOCIATION, San Francisco, CA (US);
Abstract
Techniques are described for managing master keys for token requestors to use in generating cryptograms such as TAVVs. A processor computer generates a first master key for a token requestor, the first master key being generated based on (a) a second master key managed by the processor computer and (b) an identifier of the token requestor. The processor computer transmits, to a token requestor computer corresponding to the token requestor, the first master key. The processor computer receives, from the token requestor computer, a request for a token. Responsive to receiving the request for the token, the processor computer transmits the token to the token requestor computer; and receives, from the token requestor computer, an authorization request message comprising the token and a cryptogram generated by the token requestor computer using the first master key and the token.