1 /* 2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved. 3 * Please refer to the LICENSE.txt for licensing details. 4 */ 5 package ch.ethz.ssh2; 6 7 /** 8 * A callback interface used to implement a client specific method of checking 9 * server host keys. 10 * 11 * @author Christian Plattner 12 * @version 2.50, 03/15/10 13 */ 14 15 public interface ServerHostKeyVerifier 16 { 17 /** 18 * The actual verifier method, it will be called by the key exchange code 19 * on EVERY key exchange - this can happen several times during the lifetime 20 * of a connection. 21 * <p> 22 * Note: SSH-2 servers are allowed to change their hostkey at ANY time. 23 * 24 * @param hostname the hostname used to create the {@link Connection} object 25 * @param port the remote TCP port 26 * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>) 27 * @param serverHostKey the server's public key blob 28 * @return if the client wants to accept the server's host key - if not, the 29 * connection will be closed. 30 * @throws Exception Will be wrapped with an IOException, extended version of returning false =) 31 */ 32 public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey) 33 throws Exception; 34 } 35
