Abstract: A method of secure reception, in a card reader, of a piece of data entered into a terminal connected to the card reader. The method includes the following acts by the card reader: obtaining an encipherment reader key from the card reader; encrypting the encipherment reader key by using an authentic encipherment key shared between the card reader and an authentication server, delivering an encrypted reader key; sending the encrypted reader key to the authentication server for transmission of the reader key from the authentication server to the terminal; receiving an encrypted key sent by the authentication server, resulting from an encryption of a terminal key, obtained by the authentication server, by using the authentic key; and receiving encrypted data sent by the terminal, resulting from an encryption, by using at least the reader key and of the terminal key, of the at least one piece of data.

Abstract: A method for controlling the running of an application. The method is implemented within the application, the application running on an electronic running device. The running device is connected to a calling device via a communication network. The method includes: receiving from the calling device a runtime data structure, including at least one recording, each recording having at least one data field including a coded function name; saving the runtime data structure in a specific memory zone; for each current recording of the runtime data structure, implementing a function bearing a decoded function name corresponding to the coded function name, when the function bearing a decoded function name of the application can be associated with the coded function name.

Abstract: In the field of payment terminals, a new generation of feature-rich payment terminals is emerging. These payment terminals are mass-produced and the level of security provided for data entry operations is low because the primary function of these communication terminals is not the entry of sensitive data. As a result, the data relating to payment transactions entered via these payment terminals are entered with a level of security that is not adequate as regards the sensitivity of the data entered. Accordingly, a communication terminal is provided, which secures data entered via a user interface of a communication terminal, by transmitting them among a stream of dummy data, and by encrypting all data, those actually entered by a user and the dummy data, before the transmission thereof to a secure data processing device.

Abstract: A method of secure reception, in a card reader, of a piece of data entered into a terminal connected to the card reader. The method includes the following acts by the card reader: obtaining an encipherment reader key from the card reader; encrypting the encipherment reader key by using an authentic encipherment key shared between the card reader and an authentication server, delivering an encrypted reader key; sending the encrypted reader key to the authentication server for transmission of the reader key from the authentication server to the terminal; receiving an encrypted key sent by the authentication server, resulting from an encryption of a terminal key, obtained by the authentication server, by using the authentic key; and receiving encrypted data sent by the terminal, resulting from an encryption, by using at least the reader key and of the terminal key, of the at least one piece of data.