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- Local connectivity
- Messaging receive
- Messaging sending
- Read User data
- Write User data
- Multimedia recording
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.
What is a MIDlet?
A Java™ application or a game designed to run in a mobile
phone is named a MIDlet (MIDP applet).
A MIDlet is usually made of 2 files:
- The JAD file
- The JAR file
JAD file stands for
J
ava™
A
pplication
D
escriptor. It is a
small file describing the content of a JAR file.
JAR file stands for
J
ava™
A
rchive. It refers to the
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