They should have a proper termination process so that keys are removed when no longer needed. Thus, they must be managed somewhat analogously to user names and passwords. However, SSH keys are authentication credentials just like passwords. It improved security by avoiding the need to have password stored in files, and eliminated the possibility of a compromised server stealing the user's password. SSH introduced as a more secure alternative to the older.rhosts authentication. The authentication keys, called, are created using the keygen program. SSH Keys and Public Key Authentication The uses public key cryptography for authenticating hosts and users.
Such key pairs are used for automating logins, single sign-on, and for authenticating hosts.
