International Business Machines Corporation

Leonard Robert Nizinski, Jr

Michael Wayne Brown

Douglas Scott Rothert

Bruce Anthony Beadle

The Java Virtual Machine (JVM) can be decoupled from its Java-enabled browser. To maintain access to certain system resources (a 'privilege') by applets, each Java thread that enables the privilege will now create an entry that describes the privilege in a linked list based on the stack frame address. Sufficient information is stored in the link list for validation purposes. Further, system classes that require specific privileges will have them implicitly granted by an implicit privilege list.

Method and apparatus to retain applet security privileges outside of the Java virtual machine

The present invention modifies the implementation of the Netscape security model to use an apparatus to set and get extended class data. More specifically, use of the apparatus to store the additional security information for later retrieval at the point where this information would have been written into the Java class data structure, and retrieve this information at the point it would have been read from the Java class data structure. The apparatus is implemented by creating a hash table of objects that store the extended class information. The hash key function uses the original class reference to lookup the classes shadow data structure.

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Austin, TX, United States of America

Leonard Robert Nizinski, Jr