Invention Grant
US07809652B2 Signature based negative list for off line payment device validation
有权
离线支付设备验证的基于签名的负面列表
- Patent Title: Signature based negative list for off line payment device validation
- Patent Title (中): 离线支付设备验证的基于签名的负面列表
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Application No.: US11713307Application Date: 2007-03-01
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Publication No.: US07809652B2Publication Date: 2010-10-05
- Inventor: Phil Dixon , Ayman Hammad , William Alexander Thaw , Christian Aabye
- Applicant: Phil Dixon , Ayman Hammad , William Alexander Thaw , Christian Aabye
- Applicant Address: US CA San Francisco
- Assignee: Visa U.S.A. Inc.
- Current Assignee: Visa U.S.A. Inc.
- Current Assignee Address: US CA San Francisco
- Agency: Quarles & Brady LLP
- Agent Bradley K. DeSandro
- Main IPC: G06F17/60
- IPC: G06F17/60

Abstract:
At each of a plurality of transit readers of a transit system, for each of a plurality of riders, where each rider seeks to conduct an access transaction with the transit system for access into the transit facility by using a payment device issued by an issuer in a payment system, data is read from the payment device. The data includes an encryption code that uniquely corresponds to the payment device and was created by the issuer using one or more encryption keys and a predetermined algorithm. A check will be performed, remotely and/or locally, of one or more lists of other encryption codes to determine if the encryption code is on the list. On the basis of whether the encryption code is on the list, the rider is permitted access to the facility of the transit system. The payment device need not be changed for the rider's fare. Decryption of the encryption code read from the payment device is not required to complete the access transaction.
Public/Granted literature
- US20080183622A1 Signature based negative list for off line payment device validation Public/Granted day:2008-07-31
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