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CHAPTER
6
Security and MIDlet Signing
MIDP 2.0 includes a comprehensive security model based on protection domains.
MIDlet suites are installed into a protection domain which determines access to
protected functions. The MIDP 2.0 specification also includes a recommended
practice for using public key cryptography to verify and authenticate MIDlet
suites.
For definitive information, consult the MIDP 2.0 specification. For an overview of
MIDlet signing using the J2ME Wireless Toolkit, read this article:
Understanding MIDP 2.0's Security Architecture
http://developers.sun.com/techtopics/mobility/midp/articles/
permissions/
If you need more background on public key cryptography, try this article:
MIDP Application Security 1: Design Concerns and Cryptography
http://developers.sun.com/techtopics/mobility/midp/articles/
security1/
This chapter describes support for protection domains, permissions, and MIDlet
signing in the J2ME Wireless Toolkit.
6.1 Permissions
MIDlets must have permission to perform sensitive operations, like connecting to
the network. Permissions have specific names, and MIDlet suites can indicate their
need for certain kinds of permissions through attributes in the MIDlet suite
descriptor.