METHOD FOR SECURING AN ORDER OR PURCHASE OPERATION MEANS OF A CLIENT DEVICE

摘要

A method (100) for securing an order or purchase operation- by means of a client device (201) is described, comprising the steps of: - installing (101) an application programme on the client device (201) adapted for placing the client device (201) in communication with a server device (205) by means of a telecommunications network the application programme permitting a user to enter data useful for the purposes of performing the order or purchase operation and of transmitting said useful data to the server device (205); - running (102) the application programme on the client device (201) to perform said order or purchase operation; - installing (103) once and for all a digital certificate directly on the client device (201); - entering (105) said data useful for the performance of the order or purchase operation; The method (10) further comprises a step of authorising (106) the order or purchase operation by means of the client device (201) sending an encrypted message containing said useful data from the client device (201) to the server device (205), using the digital certificate installed as a private key to obtain the encrypted message, said private key being specific for said order or purchase operation.