com.sshtools.server.components

Class SshKeyExchangeServer

java.lang.Object

com.sshtools.server.components.SshKeyExchangeServer

All Implemented Interfaces:

SshKeyExchange<SshServerContext>

Direct Known Subclasses:

DiffieHellmanEcdh, DiffieHellmanGroup14Sha1JCE, DiffieHellmanGroup1Sha1JCE, DiffieHellmanGroupExchangeSha1JCE

public abstract class SshKeyExchangeServer
extends Object
implements SshKeyExchange<SshServerContext>

Abstract representation of an SSH key exchange.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	clientId
protected byte[]	clientKexInit
protected byte[]	exchangeHash The exchange hash produced during key exchange.
protected boolean	firstPacketFollows
protected byte[]	hostKey The server's host key.
protected SshPrivateKey	prvkey
protected SshPublicKey	pubkey
protected BigInteger	secret The secret value produced during key exchange.
protected String	serverId
protected byte[]	serverKexInit
protected byte[]	signature The signature generated over the exchange hash
protected TransportProtocol<SshServerContext>	transport The transport protocol for sending/receiving messages
protected boolean	useFirstPacket

Constructor Summary

Constructors

Constructor and Description
SshKeyExchangeServer(String hashAlgorithm) Contruct an uninitialized key exchange

Method Summary

Modifier and Type	Method and Description
abstract String	getAlgorithm() Get the key exchange algorithm name.
byte[]	getExchangeHash()
String	getHashAlgorithm()
byte[]	getHostKey()
BigInteger	getSecret()
byte[]	getSignature()
boolean	hasReceivedNewKeys()
boolean	hasSentNewKeys()
abstract boolean	processMessage(byte[] msg) Process a key exchange message
void	reset() Reset the key exchange.
void	setReceivedNewKeys(boolean receivedNewKeys)
void	setSentNewKeys(boolean sentNewKeys)
void	test()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sshtools.common.ssh.SshKeyExchange

init

Field Detail

secret

protected BigInteger secret

The secret value produced during key exchange.

exchangeHash

protected byte[] exchangeHash

The exchange hash produced during key exchange.

hostKey

protected byte[] hostKey

The server's host key.

signature

protected byte[] signature

The signature generated over the exchange hash

clientId

protected String clientId

serverId

protected String serverId

clientKexInit

protected byte[] clientKexInit

serverKexInit

protected byte[] serverKexInit

prvkey

protected SshPrivateKey prvkey

pubkey

protected SshPublicKey pubkey

firstPacketFollows

protected boolean firstPacketFollows

useFirstPacket

protected boolean useFirstPacket

transport

protected TransportProtocol<SshServerContext> transport

The transport protocol for sending/receiving messages

Constructor Detail

SshKeyExchangeServer

public SshKeyExchangeServer(String hashAlgorithm)

Contruct an uninitialized key exchange

Method Detail

setReceivedNewKeys

public void setReceivedNewKeys(boolean receivedNewKeys)

Specified by:

setReceivedNewKeys in interface SshKeyExchange<SshServerContext>

setSentNewKeys

public void setSentNewKeys(boolean sentNewKeys)

Specified by:

setSentNewKeys in interface SshKeyExchange<SshServerContext>

hasSentNewKeys

public boolean hasSentNewKeys()

Specified by:

hasSentNewKeys in interface SshKeyExchange<SshServerContext>

hasReceivedNewKeys

public boolean hasReceivedNewKeys()

Specified by:

hasReceivedNewKeys in interface SshKeyExchange<SshServerContext>

getHashAlgorithm

public String getHashAlgorithm()

Specified by:

getHashAlgorithm in interface SshKeyExchange<SshServerContext>

getAlgorithm

public abstract String getAlgorithm()

Get the key exchange algorithm name.

Specified by:

getAlgorithm in interface SshKeyExchange<SshServerContext>

Returns:

the key exchange algorithm.

getExchangeHash

public byte[] getExchangeHash()

Specified by:

getExchangeHash in interface SshKeyExchange<SshServerContext>

getHostKey

public byte[] getHostKey()

getSecret

public BigInteger getSecret()

Specified by:

getSecret in interface SshKeyExchange<SshServerContext>

getSignature

public byte[] getSignature()

processMessage

public abstract boolean processMessage(byte[] msg)
                                throws SshException,
                                       IOException

Process a key exchange message

Specified by:

processMessage in interface SshKeyExchange<SshServerContext>

Parameters:

msg -

Returns:

boolean, indicating whether it has processed the message or not

Throws:

IOException

SshException

reset

public void reset()

Reset the key exchange.

test

public void test()
          throws IOException

Specified by:

test in interface SshKeyExchange<SshServerContext>

Throws:

IOException