atob8, backspace, btoa8, btoe, etob, f, htoi, keycrunch, put8, readpass, readskey, rip, sevenbit, skey_authenticate, skey_get_algorithm, skey_haskey, skey_keyinfo, skey_passcheck, skey_set_algorithm, skey_unlock, skeychallenge, skeychallenge2, skeygetnext, skeylookup, skeyverify, skipspace (3) - S/Key library functions
Catalyst::Authentication::Credential::Password (3p) - Authenticate a user with a password.
libssh2_agent_userauth (3) - authenticate a session with a public key, with the help of ssh-agent
libssh2_userauth_authenticated (3) - return authentication status
libssh2_userauth_keyboard_interactive_ex (3) - authenticate a session using a challenge-response authentication
libssh2_userauth_password_ex (3) - authenticate a session with username and password
libssh2_userauth_publickey_fromfile (3) - authenticate a session with a public key, read from a file
sasl_encode (3) - Encode data for transport to authenticated host