com.maverick.sshd.components
Class SshKeyExchangeServer

java.lang.Object
  com.maverick.sshd.components.SshKeyExchangeServer

Direct Known Subclasses:

DiffieHellmanGroup14Sha1JCE, DiffieHellmanGroup14Sha1Server, DiffieHellmanGroup1Sha1JCE, DiffieHellmanGroup1Sha1Server, DiffieHellmanGroupExchangeSha1JCE, DiffieHellmanGroupExchangeSha1Server

public abstract class SshKeyExchangeServer

extends java.lang.Object

Abstract representation of an SSH key exchange.

Author:

Lee David Painter

Field Summary

protected java.lang.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 java.math.BigInteger	secret The secret value produced during key exchange.
protected java.lang.String	serverId
protected byte[]	serverKexInit
protected byte[]	signature The signature generated over the exchange hash
protected TransportProtocol	transport The transport protocol for sending/receiving messages
protected boolean	useFirstPacket

Constructor Summary

SshKeyExchangeServer()
Contruct an uninitialized key exchange

Method Summary

abstract java.lang.String	getAlgorithm() Get the key exchange algorithm name.
byte[]	getExchangeHash() Get the output of the key exchange
byte[]	getHostKey() Get the host key supplied during key exchange.
java.math.BigInteger	getSecret() Get the secret value produced during key exchange.
byte[]	getSignature() Get the signature produced during key exchange.
boolean	hasReceivedNewKeys()
boolean	hasSentNewKeys()
abstract void	init(TransportProtocol transport, java.lang.String clientId, java.lang.String serverId, byte[] clientKexInit, byte[] serverKexInit, SshPrivateKey prvkey, SshPublicKey pubkey, boolean firstPacketFollows, boolean useFirstPacket) Initialize the server side key exchange.
abstract boolean	processMessage(byte[] msg) Process a key exchange message
void	reset() Reset the key exchange.
void	setReceivedNewKeys(boolean receivedNewKeys)
void	setSentNewKeys(boolean sentNewKeys)

Methods inherited from class java.lang.Object

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

Field Detail

secret

protected java.math.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 java.lang.String clientId

serverId

protected java.lang.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 transport

The transport protocol for sending/receiving messages

Constructor Detail

SshKeyExchangeServer

public SshKeyExchangeServer()

Contruct an uninitialized key exchange

Method Detail

setReceivedNewKeys

public void setReceivedNewKeys(boolean receivedNewKeys)

setSentNewKeys

public void setSentNewKeys(boolean sentNewKeys)

hasSentNewKeys

public boolean hasSentNewKeys()

hasReceivedNewKeys

public boolean hasReceivedNewKeys()

getAlgorithm

public abstract java.lang.String getAlgorithm()

Get the key exchange algorithm name.

Returns:

the key exchange algorithm.

getExchangeHash

public byte[] getExchangeHash()

Get the output of the key exchange

Returns:

the exchange hash output.

getHostKey

public byte[] getHostKey()

Get the host key supplied during key exchange.

Returns:

the server's host key

getSecret

public java.math.BigInteger getSecret()

Get the secret value produced during key exchange.

Returns:

The secret value produced during key exchange

getSignature

public byte[] getSignature()

Get the signature produced during key exchange.

Returns:

the signature produced from the exchange hash.

init

public abstract void init(TransportProtocol transport,
                          java.lang.String clientId,
                          java.lang.String serverId,
                          byte[] clientKexInit,
                          byte[] serverKexInit,
                          SshPrivateKey prvkey,
                          SshPublicKey pubkey,
                          boolean firstPacketFollows,
                          boolean useFirstPacket)
                   throws java.io.IOException

Initialize the server side key exchange.

Parameters:

transport -

clientId -

serverId -

clientKexInit -

serverKexInit -

prvkey -

pubkey -

firstPacketFollows -

useFirstPacket -

Throws:

java.io.IOException

processMessage

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

Process a key exchange message

Parameters:

msg -

Returns:

boolean, indicating whether it has processed the message or not

Throws:

java.io.IOException

SshException

reset

public void reset()

Reset the key exchange.