1 files changed, 34 insertions, 0 deletions
diff --git a/src/main/java/ch/ethz/ssh2/ServerHostKeyVerifier.java b/src/main/java/ch/ethz/ssh2/ServerHostKeyVerifier.java
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+++ b/src/main/java/ch/ethz/ssh2/ServerHostKeyVerifier.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
+ * Please refer to the LICENSE.txt for licensing details.
+ */
+package ch.ethz.ssh2;
+
+/**
+ * A callback interface used to implement a client specific method of checking
+ * server host keys.
+ * 
+ * @author Christian Plattner
+ * @version 2.50, 03/15/10
+ */
+
+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 =)
+	 */
+	public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)
+			throws Exception;
+}