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package com.trilead.ssh2;
/**
* A callback interface used to implement a client specific method of checking
* server host keys.
*
* @author Christian Plattner, plattner@trilead.com
* @version $Id: ServerHostKeyVerifier.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
*/
public interface ServerHostKeyVerifier
{
/**
* The actual verifier method, it will be called by the key exchange code
* on EVERY key exchange - this can happen several times during the lifetime
* of a connection.
* <p>
* Note: SSH-2 servers are allowed to change their hostkey at ANY time.
*
* @param hostname the hostname used to create the {@link Connection} object
* @param port the remote TCP port
* @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>)
* @param serverHostKey the server's public key blob
* @return if the client wants to accept the server's host key - if not, the
* connection will be closed.
* @throws Exception Will be wrapped with an IOException, extended version of returning false =)
*/
boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)
throws Exception;
}
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