Sagem OT8X0 Series, Руководство пользователя

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Java™
- Single confirmation: the user is prompted to grant access authorizations the very first time a protected function is used by
a MIDlet. It remains valid until the MIDlet is removed from the handset.
- Always: this security group grants access to the protected functions without conditions.
A MIDIet can have two security states: "uncertified" or "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 the "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 on a mobile phone is known as a MIDlet [MIDP applet].
A MIDlet is usually made up of 2 files:
- The JAD file
- The JAR file
JAD file stands for Java™ Application Descriptor. It is a small file describing the content of a JAR file.
JAR file stands for Java™ Archive and refers to the application data (program, images, sound). A JAR file may be up to 200
KB in size.
Note: In rare circumstances, MIDlet vendors may provide no JAD file and the MIDlet is the JAR file alone. In such a case it is
your only responsibility to evaluate the risk to download the JAR file without possibility of consulting the JAD file.
Downloading a MIDlet (Java™ game or application)
MIDlets are easily downloaded in the mobile phone through the Games or Applications menus or through the WAP browser.