Hello, I need to use HTTPS 1. I've installed jsse.jar, jnet.jar and jcert.jar both in $JDK/jre/lib/ext and in $TOMCAT/lib. 2. I need now to create a server certificate : I've tried the command line : keytool -genkey -alias tomcat -keyalg RSA -> i'm asked for the password : changeit but, the following error appears : keytool generator not available. What's happened ? What can i do ? What's does it mean "tomcat" after the key word "alias" ?? Tanks for help, Delphine