com.maverick.sshd.components

Class SshKeyExchangeServer

java.lang.Object

com.maverick.sshd.components.SshKeyExchangeServer

All Implemented Interfaces:

com.maverick.ssh.components.SshComponent

Direct Known Subclasses:

DiffieHellmanGroup14Sha1JCE, DiffieHellmanGroup1Sha1JCE, DiffieHellmanGroupExchangeSha1JCE

public abstract class SshKeyExchangeServer
extends Object
implements com.maverick.ssh.components.SshComponent

Abstract representation of an SSH key exchange.

Author:

Lee David Painter

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 com.maverick.ssh.components.SshPrivateKey	prvkey
protected com.maverick.ssh.components.SshPublicKey	pubkey
protected BigInteger	secret The secret value produced during key exchange.
protected String	serverId
protected byte[]	serverKexInit
protected org.apache.mina.core.session.IoSession	session The transport protocol for sending/receiving messages
protected byte[]	signature The signature generated over the exchange hash
protected SshTransport	transport
protected boolean	useFirstPacket

Constructor Summary

Constructors

Constructor and Description
SshKeyExchangeServer() Contruct an uninitialized key exchange

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getExchangeHash() Get the output of the key exchange
byte[]	getHostKey() Get the host key supplied during key exchange.
abstract String	getName() Get the key exchange algorithm name.
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(org.apache.mina.core.session.IoSession session, SshTransport transport, String clientId, String serverId, byte[] clientKexInit, byte[] serverKexInit, com.maverick.ssh.components.SshPrivateKey prvkey, com.maverick.ssh.components.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 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 com.maverick.ssh.components.SshPrivateKey prvkey

pubkey

protected com.maverick.ssh.components.SshPublicKey pubkey

firstPacketFollows

protected boolean firstPacketFollows

useFirstPacket

protected boolean useFirstPacket

session

protected org.apache.mina.core.session.IoSession session

The transport protocol for sending/receiving messages

transport

protected SshTransport transport

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()

getName

public abstract String getName()

Get the key exchange algorithm name.

Specified by:

getName in interface com.maverick.ssh.components.SshComponent

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 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(org.apache.mina.core.session.IoSession session,
        SshTransport transport,
        String clientId,
        String serverId,
        byte[] clientKexInit,
        byte[] serverKexInit,
        com.maverick.ssh.components.SshPrivateKey prvkey,
        com.maverick.ssh.components.SshPublicKey pubkey,
        boolean firstPacketFollows,
        boolean useFirstPacket)
                   throws IOException

Initialize the server side key exchange.

Parameters:

transport -

clientId -

serverId -

clientKexInit -

serverKexInit -

prvkey -

pubkey -

firstPacketFollows -

useFirstPacket -

Throws:

IOException

processMessage

public abstract boolean processMessage(byte[] msg)
                                throws com.maverick.ssh.SshException,
                                       IOException

Process a key exchange message

Parameters:

msg -

Returns:

boolean, indicating whether it has processed the message or not

Throws:

IOException

com.maverick.ssh.SshException

reset

public void reset()

Reset the key exchange.