Applet Security
CPS714
Signed Applets
In Java 1.1, it is possible to attach a digital
signature to a JAR file. When a Web
browser or applet viewer
loads a JAR file that has been signed by a trusted entity, the browser
may grant the applet
contained in the JAR file priviledges, such as the ability to read and
write local files, that are not available to untrusted applets.