com.maverick.sshd.components

Class SshKeyExchangeServer

java.lang.Object

com.maverick.sshd.components.SshKeyExchangeServer

All Implemented Interfaces:

SshComponent, SshKeyExchange, SecureComponent

Direct Known Subclasses:

Curve25519SHA256, DiffieHellmanEcdh, DiffieHellmanGroup, DiffieHellmanGroup14Sha1JCE, DiffieHellmanGroup1Sha1JCE, DiffieHellmanGroupExchangeSha1JCE, Rsa1024SHA1KeyExchange, Rsa2048SHA2KeyExchange

public abstract class SshKeyExchangeServer
extends Object
implements SshKeyExchange

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 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 AbstractServerTransport	transport The transport protocol for sending/receiving messages
protected boolean	useFirstPacket

Constructor Summary

Constructors

Constructor and Description
SshKeyExchangeServer(String hashAlgorithm, SecurityLevel securityLevel, int priority) 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()
int	getPriority()
BigInteger	getSecret()
SecurityLevel	getSecurityLevel()
byte[]	getSignature()
boolean	hasReceivedNewKeys()
boolean	hasSentNewKeys()
abstract void	init(AbstractServerTransport transport, String clientId, String serverId, byte[] clientKexInit, byte[] serverKexInit, SshPrivateKey prvkey, SshPublicKey pubkey, boolean firstPacketFollows, boolean useFirstPacket)
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

Methods inherited from interface com.maverick.ssh.components.SshKeyExchange

getProvider, test

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 AbstractServerTransport transport

The transport protocol for sending/receiving messages

Constructor Detail

SshKeyExchangeServer

public SshKeyExchangeServer(String hashAlgorithm,
                            SecurityLevel securityLevel,
                            int priority)

Contruct an uninitialized key exchange

Method Detail

getSecurityLevel

public SecurityLevel getSecurityLevel()

Specified by:

getSecurityLevel in interface SecureComponent

getPriority

public int getPriority()

Specified by:

getPriority in interface SecureComponent

setReceivedNewKeys

public void setReceivedNewKeys(boolean receivedNewKeys)

setSentNewKeys

public void setSentNewKeys(boolean sentNewKeys)

hasSentNewKeys

public boolean hasSentNewKeys()

hasReceivedNewKeys

public boolean hasReceivedNewKeys()

getHashAlgorithm

public String getHashAlgorithm()

Specified by:

getHashAlgorithm in interface SshKeyExchange

getAlgorithm

public abstract String getAlgorithm()

Get the key exchange algorithm name.

Specified by:

getAlgorithm in interface SshComponent

Specified by:

getAlgorithm in interface SecureComponent

Returns:

the key exchange algorithm.

getExchangeHash

public byte[] getExchangeHash()

getHostKey

public byte[] getHostKey()

getSecret

public BigInteger getSecret()

getSignature

public byte[] getSignature()

init

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

Throws:

IOException

processMessage

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

Process a key exchange message

Parameters:

msg -

Returns:

boolean, indicating whether it has processed the message or not

Throws:

IOException

SshException

reset

public void reset()

Reset the key exchange.