This directory contains our extensions to the Weka system for doing privacy preserving decision tree classification. The source and class .jar files contain the source java files and the class files respectively. The source code is currently in extremely rough form. Its only saving grace is that it works. It will be significantly cleaned up and javadoc documentation generated in the next month. In the mean time, please contact me if you have any questions. -Jaideep (jsvaidya@cs.purdue.edu)