org.apache.sshd.server.auth.password

Interface PasswordAuthenticator

All Known Implementing Classes:

AcceptAllPasswordAuthenticator, JaasPasswordAuthenticator, RejectAllPasswordAuthenticator, StaticPasswordAuthenticator

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface PasswordAuthenticator

Used to authenticate users based on a password.

Method Summary

Modifier and Type	Method and Description
boolean	authenticate(java.lang.String username, java.lang.String password, ServerSession session) Check the validity of a password.
default boolean	handleClientPasswordChangeRequest(ServerSession session, java.lang.String username, java.lang.String oldPassword, java.lang.String newPassword) Invoked when the client sends a SSH_MSG_USERAUTH_REQUEST indicating a password change.

Method Detail

authenticate

boolean authenticate(java.lang.String username,
                     java.lang.String password,
                     ServerSession session)
              throws PasswordChangeRequiredException,
                     AsyncAuthException

Check the validity of a password.

Parameters:

username - The username credential

password - The provided password

session - The ServerSession attempting the authentication

Returns:

true indicating if authentication succeeded

Throws:

PasswordChangeRequiredException - If the password is expired or not strong enough to suit the server's policy

AsyncAuthException - If the authentication is performed asynchronously

handleClientPasswordChangeRequest

default boolean handleClientPasswordChangeRequest(ServerSession session,
                                                  java.lang.String username,
                                                  java.lang.String oldPassword,
                                                  java.lang.String newPassword)

Invoked when the client sends a SSH_MSG_USERAUTH_REQUEST indicating a password change. This can happen if the authenticate method threw PasswordChangeRequiredException thus telling the client that it needs to provide a new password. Throws UnsupportedOperationException by default.

Parameters:

session - The ServerSession attempting the authentication

username - The username credential

oldPassword - The old password

newPassword - The new password

Returns:

true if password change accepted