SLL Cert IIS > Tomcat conversion

I have a wildcard certificate in the .cer format, but I would also like to put it onto a box (running under the same domain) that is running Tomcat that is currently certifying itself.

Is there a quick and easy way to convert the certificate so Tomcat can use it?


This might be what you are looking for:


Im afraid not, unless you are implying that I need to convert the Windows IIS .cer file to an openSSL standard first.

All I have is .cer file, nothing else.


We don’t have a process for this…so I googled for an answer using import pfx java as the criteria…looks complicated, but here are links to things that others have found.

First you will need to export the certificate with private key to a pfx file, here is how to do that:

Since Tomcat is java based try:

At the end of the thread it points to a tool provided by IBM which might help at:

Hope this helps.


Cant you just issue me another certificate in the tomcat format? :wink:


The only way we can issue you another certificate is by replacing the one you were issued on the same order number, thus invalidating your original certificate.

If this is what you want to do then please submit a ticket at