Passing username and password question

I am using the following to run an external crystal reports viewer:
DECLARE
      v_username VARCHAR2(255) := NULL ;
      v_password VARCHAR2(255) := NULL ;
BEGIN
      v_username := GET_APPLICATION_PROPERTY(username) ;
      v_password := GET_APPLICATION_PROPERTY(password) ;
   CLIENT_HOST('cmd /c "C:\Program Files\Jeff-Net Report Runner Viewer\JNRRE.EXE" jnReport=H:\OC\Computer Services\Oracle Database\DFACrystalReports\EPA_PTS\TAMS_SITES_LIST.rpt jnID='||v_username||' jnPassword='||v_password||'') ;     
END ;Is the username and password going over the network as clear text? If so, how can I change it to non-clear text (for lack of a better term).
Regards,
Bill Chadbourne

as its just a command sent to the client, i guess its send in clear-text.
If you want it to be somehow encrypted, you could write your own java bean. A client call is just like
Runtime rt=Runtime.getRuntime();
Process p=rt.exec("theStatement");

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