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60 Java™
Each of these security groups has one among 5 possible authorizations levels (listed from the more restrictive to the more
permissive):
- Never: The security group completely prevents access to the protected features.
- Per use: Each time MIDlet tries to use protected feature, user is prompted to grant access.
- Per session: First time a MIDlet uses a protected function, user is prompted to grant access like in "Per use" authorization
but access is granted until the MIDlet terminates.
- Single confirmation: The first time in the whole MIDlet life a MIDlet uses a protected feature, user is prompted to grant
access. It remains valid until the MIDlet is removed from the handset.
- Always: The security group unconditionally grants access to protected features.
A MIDlet has a security status which is either "uncertified", or else "certified".
An "uncertified" status means that the source of the MIDlet could not be verified by the mobile phone at installation time. As
far as the phone knows, the MIDlet could have been written by anyone.
A "certified" status means that the MIDlet was digitally signed by a known party, whose name is displayed by the mobile
phone.
Security permissions are different for "uncertified" or "certified" MIDlets.
Security configuration menu
When a MIDlet is installed in the mobile phone, default security authorizations are applied.
This default security configuration may be altered through the "Settings/Security" menu of an installed MIDlet.
Once in the "Security" menu, the security status of the MIDlet is displayed.
If you do not want to enter the security menu, simply select "Back" button. You can proceed by selecting
OK button.
The menu displayed allows you to increase or decrease permissions currently applied to the current MIDlet for each of the
security groups.
When you set a more permissive authorization to a security group than the current value, mobile phone asks you to confirm
your increased risk exposure.
The maximum risk exposure increase is limited by the security status.
What is Java™?
Business applications and games are easily downloadable by the end-user on a Java™ featured handset.
Your mobile phone is a MIDP 2.0 compliant Java™ platform which implements WMA (SMS support) and MMAPI (Multimedia
support) options, providing an exciting environment to run highly graphical, networked and intuitive MIDP applications.
252829103_myMobileTV v.2_en.book Page 60 Mardi, 22. janvier 2008 9:56 09