Beginning J2ME platform: from novice to professional by Sing Li; Jonathan Knudsen

By Sing Li; Jonathan Knudsen

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Http. The rules for membership in SimplePD could be something as simple as verifying the origin IP address of the MIDlet suite. com, then the application management software on the device would know to place the MIDlet suite in the SimplePD protection domain. At runtime, any MIDlet that tries to make an HTTP connection will be granted the permission. Attempts to make other connection types will be denied. The simple IP-origin criterion for SimplePD is pretty weak. MIDlet suites in SimplePD are susceptible to many attacks, including data modification, data replacement, man-in-the-middle attacks, and DNS spoofing.

The class files and resource files that make up the MIDlets are packaged into a JAR file. Usually, you’ll use the jar command-line tool to accomplish this. 2. Additional information that’s needed at runtime is placed in the JAR’s manifest file. All JARs include a manifest; a MIDlet suite JAR contains some extra information needed by application management software. 3. An application descriptor file should also be generated. jad extension that describes the MIDlet suite JAR. It can be used by the application management software to decide whether a MIDlet suite JAR should be downloaded to the device.

The rules for membership in SimplePD could be something as simple as verifying the origin IP address of the MIDlet suite. com, then the application management software on the device would know to place the MIDlet suite in the SimplePD protection domain. At runtime, any MIDlet that tries to make an HTTP connection will be granted the permission. Attempts to make other connection types will be denied. The simple IP-origin criterion for SimplePD is pretty weak. MIDlet suites in SimplePD are susceptible to many attacks, including data modification, data replacement, man-in-the-middle attacks, and DNS spoofing.

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