Generating public and private keys

[Jaggi Kunal]

I am using Tomcat 4.1.12.
I want to use HTTPS Client-CERT authentication , I have made app. changes to the web.xml file.
How do I generate public and private keys for alias “tomcat”. Is the following command correct.
<JAVA_HOME>\keytool –genkey –alias tomcat –keyalg RSA
OR it should be :
<CATALINA_HOME>\keytool –genkey –alias tomcat –keyalg RSA

Regards,
Kunal Jaggi
SCJP2