| 摘要 |
<p>•- construction by the server (2) and the sale terminal (1) respectively of first and second encrypted messages;•- construction by the sale terminal (1) of a third encrypted message, using the second encrypted message, then transmission of same to the server (2);•- decryption by the server (2) of the third encrypted message, using the first encrypted message;•- construction by the server (2) of a fourth encrypted message on the basis of the content of the third decrypted message, using the first encrypted message, then transmission of same to the sale terminal (1);•- decryption by the sale terminal (1) of the fourth encrypted message, using the second encrypted message.•The sale terminal 1 generates and displays a set of information relative to the transaction in the form of a QR code 5, for example. This identification information will then be supplemented by a random chain consisting of a series of random characters, generated by the sale terminal 1. The decryption key is generated using two random numbers.</p> |
