METHOD FOR PERFORMING A SECURE TRANSACTION BETWEEN A FIRST DEVICE AND A SECOND DEVICE

摘要

A method of performing a transaction between a first device and a second device, the first device having an established trusted communication relation with a first trusted device and the second device having an established trusted communication relation with a second trusted device, the first and the second trusted device each having an established trusted communication relation with a fourth trusted device, comprises the steps of the first device sending, to the first trusted device, first input data, and the second device sending, to the second trusted device, second input data, the first trusted device confirming the originality of the first device and sending the first input data to the fourth trusted device, and the second trusted device confirming the originality of the second device and sending the second input data to the fourth trusted device, the fourth trusted device, upon receipt of the first and the second input data, sending to the first trusted device a first receipt message comprising the first and the second input data,and sending to the second trusted device a second receipt message comprising the first and the second input data, the first trusted device sending, to the first device, the first receipt message, and the second trusted device sending, to the second device, the second receipt message.