  *  <b>Entropy function</b> - Added an entropy function to [/fdiff?v1=1175&v2=1263|bro.bif]. If you want to use it, you have to rebuild bro, and then you should be able to use it within your policy scripts as:
<verbatim> get_H('some string value here') </verbatim>
Obviously the string could be a raw static string or more usefully a variable.