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:
Feb. 13, 2007
Filed:
Jun. 22, 2001
Edward J. Hogan, Larchmont, NY (US);
Carl M. Campbell, Newtown Square, PA (US);
Edward J. Hogan, Larchmont, NY (US);
Carl M. Campbell, Newtown Square, PA (US);
MasterCard International Incorporated, Purchase, NY (US);
Abstract
A method is provided for conducting an electronic transaction with a payment account number having a certain amount of available funds, using a payment network and a 'check site'. The method comprises the following steps: (a) generating a secret key associated with the payment account number; (b) using the secret key to generate a message authentication code ('MAC') specific to the transaction; (c) generating an authorization request message including the message authentication code; (d) forwarding the authorization request message over the payment network to the check site for verifying the authenticity of the MAC; (e) verifying the message authentication code by the check site using the secret key; (f) responding to the authorization request message over the payment network based on the available funds and the transaction amount.