| 摘要 |
PURPOSE: An access control system for a file on a memory card is provided to control and security the file, change a configuration flexibly, and protect configuration information. CONSTITUTION: A communication device(100) can receive a smart card(106) to be accessible by a client module(102) via a smart card interface(104). The smart card has a file system including a plurality of data files and a control file. The control information from the control file is then read and based on the file control information, it is determined whether data read from a data file is authorized to include the data type of the data read therefrom. When it is determined that the data file is not authorized to include the data type, the data type is discarded. The technique allows for over-the-air provisioning, alteration of carriers, services and protocols, availability of applications, and various others operations pertaining to the configuration of communication devices in a secure and controlled manner.
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