Abstract: A method for the secured recording of data, implemented in a data-recording device having a first non-secured memory and a second secured memory, is disclosed. The method has the steps of: obtaining a derived key corresponding to the data in the second memory from a root key recorded in the second memory; encrypting data using the derived key, delivering encrypted data; recording the encrypted data in the first memory; determining a hash imprint of said data; recording said hash imprint in a hash file recorded in the first memory; recording a general hash imprint, representing the content of the hash file comprising said hash imprint, in the second memory; and eliminating the data in the second memory.

Abstract: A method for the secured recording of data, implemented in a data-recording device having a first non-secured memory and a second secured memory, is disclosed. The method has the steps of: obtaining a derived key corresponding to the data in the second memory from a root key recorded in the second memory; encrypting data using the derived key, delivering encrypted data; recording the encrypted data in the first memory; determining a hash imprint of said data; recording said hash imprint in a hash file recorded in the first memory; recording a general hash imprint, representing the content of the hash file comprising said hash imprint, in the second memory; and eliminating the data in the second memory.

Abstract: A method is provided for multiplexing messages exchanged between a payment terminal and a communication terminal via a connection between the payment terminal and the communication terminal using the iPod Accessory Protocol, iAP. The method includes: an initialization step of initializing an external communication interface with the communication terminal, a first transmission step of transmitting, to the communication terminal, a request for creation of remote virtual channels via the external communication interface; a creation step of creating, within the payment terminal, local virtual channels corresponding to the remote virtual channels; and a second transmission step of transmitting data frames associated with the local virtual channels via the external communication interface.

Abstract: A method is provided for multiplexing messages exchanged between a payment terminal and a communication terminal via a connection between the payment terminal and the communication terminal using the iPod Accessory Protocol, iAP. The method includes: an initialization step of initializing an external communication interface with the communication terminal, a first transmission step of transmitting, to the communication terminal, a request for creation of remote virtual channels via the external communication interface; a creation step of creating, within the payment terminal, local virtual channels corresponding to the remote virtual channels; and a second transmission step of transmitting data frames associated with the local virtual channels via the external communication interface.