01: package ch.ethz.ssh2;
02:
03: /**
04: * A callback interface used to implement a client specific method of checking
05: * server host keys.
06: *
07: * @author Christian Plattner, plattner@inf.ethz.ch
08: * @version $Id: ServerHostKeyVerifier.java,v 1.4 2006/02/14 19:43:16 cplattne Exp $
09: */
10:
11: public interface ServerHostKeyVerifier {
12: /**
13: * The actual verifier method, it will be called by the key exchange code
14: * on EVERY key exchange - this can happen several times during the lifetime
15: * of a connection.
16: * <p>
17: * Note: SSH-2 servers are allowed to change their hostkey at ANY time.
18: *
19: * @param hostname the hostname used to create the {@link Connection} object
20: * @param port the remote TCP port
21: * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>)
22: * @param serverHostKey the server's public key blob
23: * @return if the client wants to accept the server's host key - if not, the
24: * connection will be closed.
25: * @throws Exception Will be wrapped with an IOException, extended version of returning false =)
26: */
27: public boolean verifyServerHostKey(String hostname, int port,
28: String serverHostKeyAlgorithm, byte[] serverHostKey)
29: throws Exception;
30: }
|