How to set up password-less SSH login for a Dropbear client

Dropbear is a replacement for standard OpenSSH for environments with low memory and processor resources. With OpenSSH, you can use the well-known ssh-keyen command to create a private/public keypair for the client. In Dropbear, it is a bit different. Here are the commands on the client:

The private key will be in ~/.ssh/id_dropbear. The public key is output to stdout.

On a Dropbear as well as on a OpenSSH server, you can put the client’s public key as usual into the  authorized_keys file to allow the client a password-less login:

Let me know in comments if you know of a better method!

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