I'm trying to get a linux desktop to connect via ssh to a wrt54g router i have.  It has ssh running on it, which is far as i can tell is drop bear.

I've successfully been connecting to this router via windows and putty using a private/public key.

How can i transfer that key over to the linux machine?  And what should it look like?

I'm assuming the public one is on the wrt54g (in the web admin tool) and the private one is the ppk file I use on putty.

Can this be done?