02.193GPPRelease 1999Stage 1Subscriber Identity Module Application Programming Interface (SIM API)TS
11.1 Sharing resources between applets
The API shall provide a secure data structure and function sharing mechanism between applets and with the GSM SIM kernel.
The GSM SIM kernel should be able to share with applets:
GSM files : to get file status, read and update data field
CHV1,CHV2 : to get status.
A toolkit applet shall be able to share any kind of data with any other applet even a non-toolkit applet.
The data and function sharing mechanism and the access control management shall be common to all card issuers.
To ease the deployment, these requirements have the following priorities:
high: GSM SIM kernel data sharing (e.g. access to the Telecom directory),
medium: inter industry sharing mechanism between applets.
11.2 Access to data
The SIM API shall provide a way to let each applet indicate:
– the shared data and functions,
– the associated access functions to these data and functions,
– the security or trust level required,
– the accepted certification authorities, and,
– the identity of the applet provider.
The SIM API framework shall check all these parameters before granting an access to data.