Portable electronic entity e.g. universal serial bus key, for communicating with e.g. computer, has unit securing execution of voice over Internet Protocol application between entity and communication server based on cryptographic mode

摘要

The entity has an interface to a host station (SH) and a communication unit for executing a voice over Internet protocol (VoIP) communication application between the entity connected to the host station and a communication server (SER) connected to the host station via a communication network (NET). A chip card e.g. subscriber identity module (160), includes a unit for securing the execution of the VoIP application between the entity and the communication server based on a selected cryptographic mode e.g. authentication protocol. Independent claims are also included for the following: (1) a method for communication between a portable electronic entity and a communication unit (2) a data medium e.g. CD-ROM, hard disk, floppy disk, or electrical or optical signal, including computer program instructions for implementing a method for communication between a portable electronic entity and a communication unit (3) a computer program having instructions for implementing a method for communication between a portable electronic entity and a communication unit.