How to use

authenticate

method

in

com.cloudbees.jenkins.plugins.sshcredentials.SSHAuthenticator

/**
 * Authenticate the bound connection using the supplied credentials.
 *
 * @return For an {@link #getAuthenticationMode()} of {@link Mode#BEFORE_CONNECT} the return value is
 * always {@code true} otherwise the return value is {@code true} if and only if authentication was
 * successful.
 */
public final boolean authenticate(TaskListener listener) {
  setListener(listener);
  return authenticate();
}

private Session createSession(final PrintStream logger) throws JSchException, IOException, InterruptedException {
  final StandardUsernameCredentials user = lookupCredentialsById(credentialId);
  if (user == null) {
    String message = "Credentials with id '" + credentialId + "', no longer exist!";
    logger.println(message);
    throw new InterruptedException(message);
  }
  final JSchConnector connector = new JSchConnector(user.getUsername(), getResolvedHostname(), port);
  final SSHAuthenticator<JSchConnector, StandardUsernameCredentials> authenticator = SSHAuthenticator
      .newInstance(connector, user);
  authenticator.authenticate(new StreamTaskListener(logger, Charset.defaultCharset()));
  final Session session = connector.getSession();
  session.setServerAliveInterval(serverAliveInterval);
  final Properties config = new Properties();
  //TODO put this as configuration option instead of ignoring by default
  config.put("StrictHostKeyChecking", "no");
  session.setConfig(config);
  session.connect(timeout);
  return session;
}

  throw new AbortException("Cannot find SSH User credentials with id: " + credentialsId);
if (SSHAuthenticator.newInstance(connection, credentials).authenticate(listener)
    && connection.isAuthenticationComplete()) {
  logger.println(Messages.SSHLauncher_AuthenticationSuccessful(getTimestamp()));

  throw new AbortException("Cannot find SSH User credentials with id: " + credentialsId);
if (SSHAuthenticator.newInstance(connection, credentials).authenticate(listener)
    && connection.isAuthenticationComplete()) {
  logger.println(Messages.SSHLauncher_AuthenticationSuccessful(getTimestamp()));

      && smart.get(uri, item)
      && SSHAuthenticator.newInstance(con, item.getValue(), uri.getUser())
      .authenticate(smart.listener);
} else if (credentialsProvider instanceof CredentialsProviderImpl) {
  CredentialsProviderImpl sshcp = (CredentialsProviderImpl) credentialsProvider;
  authenticated = SSHAuthenticator.newInstance(con, sshcp.cred).authenticate(sshcp.listener);
} else {
  authenticated = false;