Magercises

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By MageLang Institute

[Course Notes | Module Intro]

Introduction to Fundamentals of Java Security Magercises

Welcome to the MageLang Institute Magercises for the Security Course Module.

These magercises cover the fundamental principles behind using the various security capabilities of Java technology in applications or in applets.

A help document provides a quick explanation of the concepts behind the magercises.

Magercises

1. Writing Your Own SecurityManager

   Create a security manager to restrict access within Java programs.

   Educational goal(s):

   • How to limit program access

2. Using Netscape's Capabilities Classes

   Learn how to use Netscape's Capabilities API as a preview to signing applets for privileged access within Communicator.

   Educational goal(s):

   • How to use Netscape's Capabilities API

3. Signing Jar files for Netscape Communicator with signtool

   Finish off the Using Netscape's Capabilities Classes applet by signing the code and enabling it as a trusted applet within Netscape Communicator.

   Educational goal(s):

   • How to sign JAR files with signtool
   • How to create privileged applets for Netscape's Communicator

4. Writing Your Own ClassLoader [JDK 1.1]

   Create a class loader to understand the process of converting .class files into real Java objects.

   Educational goal(s):

   • How to customize class loading by creating your own class loader

5. Using URLClassLoader [JDK 1.2]

   Create a URLClassLoader to load a class from other than the CLASSPATH.

   Educational goal(s):

   • How to customize class loading by using URLClassLoader

6. Using policytool [JDK 1.2]

   Use the JDK policytool tool to break out of the sandbox to make a file writable from an applet.

   Educational goal(s):

   • How to use policytool to expose permissions

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