Method for encrypting data and a telecommunications terminal and access authorization card

摘要

A method of encrypting data, a telecommunications terminal (5) and an access authorization card (100) are described; they permit utilization of services of one or more service providers independently of a network operator or manufacturer of the telecommunications terminal (5). Encrypted data is transmitted between a service provider (1) and the telecommunications terminal (5) over a telecommunications network (10). Data to be transmitted over the telecommunications network (10) is encrypted as a function of the service provider selected.