fixed travis secure env var encryption util (use PKCS1); close #537
fixed travis secure env var encryption util (use PKCS1); close #537

lqch14102/lantern,lqch14102/lantern,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,lqch14102/lantern,getlantern/lantern-java