Class ExtendedServerHostKeyVerifier

java.lang.Object

com.trilead.ssh2.ExtendedServerHostKeyVerifier

All Implemented Interfaces:

ServerHostKeyVerifier

public abstract class ExtendedServerHostKeyVerifier
extends Object
implements ServerHostKeyVerifier

This extends the ServerHostKeyVerifier interface by allowing the remote server to indicate it has multiple server key algorithms available. After authentication, the getKnownKeyAlgorithmsForHost(String, int) method may be called and compared against the list of server-controller keys. If a key algorithm has been added then addServerHostKey(String, int, String, byte[]) will be called. If a key algorithm has been removed, then removeServerHostKey(String, int, String, byte[]) will be called.

Author:

Kenny Root

Constructor Summary

Constructors

Constructor	Description
ExtendedServerHostKeyVerifier()

Method Summary

Modifier and Type	Method	Description
abstract void	addServerHostKey(String hostname, int port, String keyAlgorithm, byte[] serverHostKey)	After authentication, if the server indicates it has another keyAlgorithm, this method will be called for the app to add it to its record of known keys for this hostname.
abstract List<String>	getKnownKeyAlgorithmsForHost(String hostname, int port)	Called during connection to determine which keys are known for this host.
abstract void	removeServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)	After authentication, if the server indicates it no longer uses this key, this method will be called for the app to remove its record of it.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ServerHostKeyVerifier

verifyServerHostKey

Constructor Details

ExtendedServerHostKeyVerifier

public ExtendedServerHostKeyVerifier()

Method Details

getKnownKeyAlgorithmsForHost

public abstract List<String> getKnownKeyAlgorithmsForHost(String hostname,
 int port)

Called during connection to determine which keys are known for this host.

Parameters:

hostname - the hostname used to create the Connection object

port - the server's remote TCP port

Returns:

list of hostkey algorithms for the given hostname and port combination or null if none are known.

removeServerHostKey

public abstract void removeServerHostKey(String hostname,
 int port,
 String serverHostKeyAlgorithm,
 byte[] serverHostKey)

After authentication, if the server indicates it no longer uses this key, this method will be called for the app to remove its record of it.

Parameters:

hostname - the hostname used to create the Connection object

port - the server's remote TCP port

serverHostKeyAlgorithm - key algorithm of removed key

serverHostKey - key data of removed key

addServerHostKey

public abstract void addServerHostKey(String hostname,
 int port,
 String keyAlgorithm,
 byte[] serverHostKey)

After authentication, if the server indicates it has another keyAlgorithm, this method will be called for the app to add it to its record of known keys for this hostname.

Parameters:

hostname - the hostname used to create the Connection object

port - the server's remote TCP port

keyAlgorithm - SSH standard name for the key to be added

serverHostKey - SSH encoding of the key data for the key to be added