ServerHostKeyVerifier


1   
2   package ch.ethz.ssh2;
3   
4   /**
5    * A callback interface used to implement a client specific method of checking
6    * server host keys.
7    * 
8    * @author Christian Plattner, plattner@inf.ethz.ch
9    * @version $Id: ServerHostKeyVerifier.java,v 1.4 2006/02/14 19:43:16 cplattne Exp $
10   */
11  
12  public interface ServerHostKeyVerifier
13  {
14      /**
15       * The actual verifier method, it will be called by the key exchange code
16       * on EVERY key exchange - this can happen several times during the lifetime
17       * of a connection.
18       * <p>
19       * Note: SSH-2 servers are allowed to change their hostkey at ANY time.
20       * 
21       * @param hostname the hostname used to create the {@link Connection} object
22       * @param port the remote TCP port
23       * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>)
24       * @param serverHostKey the server's public key blob
25       * @return if the client wants to accept the server's host key - if not, the
26       *         connection will be closed.
27       * @throws Exception Will be wrapped with an IOException, extended version of returning false =)
28       */
29      public boolean verifyServerHostKey(String   hostname, int port, String   serverHostKeyAlgorithm, byte[] serverHostKey)
30              throws Exception  ;
31  }
32

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