Raspbian Pixel passwordless SSH - autogenerated keys?

[guerlando]

I've just installed the new Raspbian Pixel and in the process of installing new SSH keys into it, I noticed that /etc/ssh already has some keys, what are them? Are them auto-generated? Also, the file sshd_config points to all these keys by:

Code: Select all

Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key

I don't know if I'm supposed to replace them and I don't know how to generate all these types, I only know how to generate the rsa key pair. Could somebody help me?

[asandford]

They should be generated at first boot, check the timestamps