OpenWrt Forum Archive

Hey guys, I really need some help.

I just installed OpenWrt on my router and want it to be able to back up the files off-site via an rsync utility. However, the server uses an authorized_keys file to designate who is able to automatically log in without a password. I've set up numerous windows machines with a simple routine of using ssh-keygen and appending the id_rsa.pub key to the authorized_keys file.

However, after installing this o/s I realized it does not have the ability to perform ssh-keygen and create the file type I want. I researched more and found out that OpenWrt uses something called dropbear. To create an rsa key it seems I am limited to using dropbearkey which does not create a usable key for me. It creates gibberish. Then comes dropbearconvert, which creates an rsa key which is a bit more readable, but still not usable.

The format I'm looking for would come across as:

ssh-rsa AAAAB3Nza08efASFliwefw34SMP7u6+qwIcJmYZhqNCw4q7bTBDVZYqO2De5Iadt/HefLGPt+RHc+C2k129cqQ8t91TayRpFY7rjjzVS0+3HZQdenFfQA0PwgQaVGHsiZUui8B99g3s5pQiYA6lwTnP3lnUGUWIgTpdV/SoX2NGtjiKNV9YYmXJri5mBYzEiBSUlDyrEMvG1831blk/frXIx7G+TkB6BNgMC2N8AOhEYHzikS4a97t9v+VgLTFzKCzPYntQYihs7mEw62t+Tq0O9XObL8/OYoBuEwXdZ0onFc3nPCNeUK/kj1oNMfew0sB4ngWomimQgGjv/RMzYyvH3SlK9jXUA53WQ== root@noneofyourbusiness

But what I actually get from dropbearconvert is something like this:

As you can see, there seems to be some conversion tricks to this and I was wondering how I might go about getting the rsa key in the first format, not the latter. If anyone has done this or knows how to, or even knows another topic showing how to, please reply. Thanks so much!