Patent ID: 11972419
Assignee: BANKS AND ACQUIRERS INTERNATIONAL HOLDING
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The method of according to claim 1, comprising, within the user device, between the transmission of the pair of signed data and the reception of the encrypted data:
receiving the pair of signed data by the user device;
verifying, by the user device, the signature of the pair of signed data, using a public key of the pair of private and public keys; and
when the signature of the pair of signed data is correct:
signing, using a signature key, payment data and the identifier of the communication terminal to generate the pair of signed data;
encrypting the pair of signed data by using an encryption key to generate the encrypted data; and
transmitting the encrypted data to the communications terminal, wherein the encrypted data is not transmitted by the user device to the communication terminal when the signature of the pair of signed data is not correct.