HowTo: Change password of SSH keyfile

ssh-keygen mit dem Parameter -p ist dein Freund:

user@host:~$ cd .ssh
user@host:~$ ssh-keygen -f keyfile -p
Enter old passphrase: 
Enter new passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved with the new passphrase.
user@host:~$