Mastercard International Incorporated

David John Sylvester

Colin Tanner

David Anthony Roberts

Theresa L Smith

Theresa Smith

A method and system for transmitting multiple payment accounts for use by a payment device. The method includes allocating a cryptographic personal account number (CPAN) and producing at least one cryptographic master key set relating to this CPAN and transmitting, by a transmitting device, at least one produced cryptographic master key set for storage in a payment device. Further, the method includes receiving, by a receiving device, at least one device personal account number (DPAN), wherein each of the at least one DPAN is associated with a payment account associated with a consumer; generating, by a processing device, a repersonalization script for each of the at least one DPAN, wherein the repersonalization script includes a set of data associated with the corresponding DPAN; and transmitting, by the transmitting device, at least one repersonalization script to the payment device. The payment device is configured to use the CPAN for selected cryptographic calculations, and use the DPAN and the associated set of data for other aspects of a financial transaction.

System and method for using multiple payment accounts using a single payment device

A method for verifying an image by a first electronic device, the method comprising the first electronic device: sending a request for an image to a second electronic device, wherein the second electronic device is remote from the first electronic device and, optionally, a server; receiving an image and a certificate from the second electronic device, wherein the certificate comprises a protected checksum of at least the image; generating a checksum in dependence on at least the received image; performing a comparison in dependence on said generated checksum and the protected checksum received in the certificate; and verifying the received image in dependence upon the comparison. Advantageously, the first electronic device is able to verify each received image and to prevent the display of any received images that are not authenticated. Applications include the display of card images.

Growing community of inventors

Brentwood, United Kingdom

David John Sylvester