export certificate and key

Hi to all,

I have autoca running with my own CA. And I can create certificates and keys for users and hosts. But now I would like to use the certificate and key for radius 802.1x authentication so I need to export the certificate and the key. I know how to convert a DER certificate to a pem certificate. But before I can convert the key and the certificate I need to export it. So how can I do that?

Another question: Is there any default password in the key or is it without any password?

Stefan