Here is an example of the interaction with a password included SSL Cert:
[root@w2 conf.d]# /etc/init.d/httpd restart Stopping httpd: [ OK ] Starting httpd: Apache/2.2.8 mod_ssl/2.2.8 (Pass Phrase Dialog) Some of your private key files are encrypted for security reasons. In order to read them you have to provide the pass phrases. Server chrisschuld.com:443 (RSA) Enter pass phrase: OK: Pass Phrase Dialog successful.
[root@w2 conf]# openssl rsa -in chrisschuld.com.key -out chrisschuld.com.key.nopass
REFERENCES
http://chrisschuld.com/2008/08/removing-the-password-on-an-apache-ssl-certificate/