Patent ID: 8509737

Claim:
A security module for a communication terminal, the security module being configured to perform end-to-end authentication of a plurality of telecommunications networks and comprising: one or more usable application modules; a locking module for selectively disabling usability of one or more of the application modules; an unlocking module for selectively re-enabling usability of one or more of the application modules; at least one authorization register, assigned to one or more application modules; and a control module for tying selective usability of one or more of the application modules to usage of a specific telecommunications network operated by a specific operator among the plurality of telecommunication networks by activating the unlocking module depending on: authentication data received in the security module, when the communication terminal is registered in the specific telecommunications network, from a central authentication unit supporting end-to-end authentication of the specific telecommunications network, which authentication data is assignable in an authenticated way to the specific telecommunications network and indicates an authentication of the specific telecommunications network; and wherein the control module is configured to store in the authorization register current data about at least one of: an authorized number of sessions through a logical channel of the application module and an authorized number of reset cycles of the security module.