Procedure for the control of applications stored in a subscriber identity module
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United States of America Patent
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Mar 23, 2004
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N/A
app pub date -
Dec 30, 1999
filing date -
Jul 2, 1997
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Abstract
A procedure for the control of applications stored in a user's subscriber identity module (SIM) in a data communication system that includes a data communication network, a terminal device connected to the data communication network and to which the subscriber identity module is connected, and an application control server that is connected to the data communication network. The subscriber identity module contains a stored application that makes use of the data communication network and that is used by way of the terminal device. A key list comprising one or more application-specific keys is stored in the user's subscriber identity module, and a corresponding key list is also stored in the application control server which is operable to control applications stored in the subscriber identity modules of multiple users of the network. The application stored in the user's subscriber identity module is activated and/or closed through the transmission, verification and use of keys stored in the key lists at the subscriber identity module and at the application control server.
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