删除原有key
sudo rm /etc/ssh/ssh_host_*
生成新key
sudo ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
sudo ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
sudo ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key
参考
https://wiki.archlinux.org/title/Talk:OpenSSH
标签：keys,sudo,keygen,etc,host,ArchLinux,ssh,key From： https://www.cnblogs.com/3yude/p/16888487.html