Siemens XT65 - Manual (Page 106)

Java User’s Guide
12.3 Application and Data Protection
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wm_java_usersguide_v12 Page 106 of 123 2008-02-25
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12.3 Application and Data Protection
In addition to the Java secured mode it is possible to prevent the activation of the Module
Exchange Suite. When Module Exchange Suite access is deactivated with AT^SJSEC, it is no
longer possible to access to the Flash file system on the module. A condition for the deactiva-
tion of the access to the Flash file system is the existence of a customer root certificate inside
of the module (see
Section 12.2.1 ).
The default state of MES is ON.
12.4 Structure and Description of the Java Security Commands
Special commands are used in the Java security environment. These commands are trans-
ferred to the module with the help of the special AT command AT^SJSEC. This command
makes it possible to send binary data to the module. After AT^SJSEC is issued, the module
changes into a block transfer mode. Now binary data in a fixed format can be sent. These
binary data contain the actual Java security commands.