"Daniele B.":
> I went to my Mac (SSH -V: OpenSSH 6.9p1 LibreSSL 2.1.8) and launched
> ssh-keygen produced for my my user a nice RSA key. I grabbed it and I
> went on my
> cloud server (SSH -V: OpenSSH 9.2p1 OpenSSL 3.0.9) and appended it in
> my .ssh/authorized_keys.
While RSA _keys_ are still supported, the RSA signature _algoritm_
has changed: rsa-sha2-{256,512} is used nowadays and the old ssh-rsa
scheme has been disabled by default.
rsa-sha2 was introduced with OpenSSH 7.2, so 6.9 is too old.
The easiest solution is to use an Ed25519 key, supported since
OpenSSH 6.5:
$ ssh-keygen -t ed25519
--
Christian "naddy" Weisgerber [email protected]
