org.apache.sshd.client.kex

Class DHGEXClient

java.lang.Object

org.apache.sshd.common.util.logging.AbstractLoggingBean

org.apache.sshd.common.kex.dh.AbstractDHKeyExchange

org.apache.sshd.client.kex.AbstractDHClientKeyExchange

org.apache.sshd.client.kex.DHGEXClient

All Implemented Interfaces:

ClientSessionHolder, KeyExchange, NamedResource, SessionContextHolder, SessionHolder<Session>

public class DHGEXClient
extends AbstractDHClientKeyExchange

Field Summary

Fields

Modifier and Type	Field and Description
protected AbstractDH	dh
protected byte	expected
protected DHFactory	factory
protected byte[]	g
protected int	max
protected int	min
private byte[]	p
protected int	prf
private java.math.BigInteger	pValue

Fields inherited from class org.apache.sshd.common.kex.dh.AbstractDHKeyExchange

h, hash, i_c, i_s, k, v_c, v_s

Fields inherited from class org.apache.sshd.common.util.logging.AbstractLoggingBean

log

Fields inherited from interface org.apache.sshd.common.kex.KeyExchange

GROUP_KEX_OPCODES_MAP, SIMPLE_KEX_OPCODES_MAP

Fields inherited from interface org.apache.sshd.common.NamedResource

BY_NAME_COMPARATOR, NAME_EXTRACTOR

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DHGEXClient(DHFactory factory, Session session)

Method Summary

Modifier and Type	Method and Description
protected AbstractDH	getDH(java.math.BigInteger p, java.math.BigInteger g)
java.lang.String	getName()
protected byte[]	getP()
protected java.math.BigInteger	getPValue()
void	init(byte[] v_s, byte[] v_c, byte[] i_s, byte[] i_c) Initialize the key exchange algorithm.
static KeyExchangeFactory	newFactory(DHFactory delegate)
boolean	next(int cmd, Buffer buffer) Process the next packet
protected void	setP(byte[] p)
protected void	validateEValue()
protected void	validateFValue()

Methods inherited from class org.apache.sshd.client.kex.AbstractDHClientKeyExchange

getClientSession

Methods inherited from class org.apache.sshd.common.kex.dh.AbstractDHKeyExchange

getE, getEValue, getF, getFValue, getH, getHash, getK, getSession, setE, setF, toString, updateE, updateE, updateF, updateF, validateEValue, validateFValue

Methods inherited from class org.apache.sshd.common.util.logging.AbstractLoggingBean

debug, debug, debug, debug, debug, error, error, error, error, error, getSimplifiedLogger, info, info, warn, warn, warn, warn, warn, warn, warn, warn

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sshd.common.kex.KeyExchange

getGroupKexOpcodeName, getSimpleKexOpcodeName, isValidDHValue

Methods inherited from interface org.apache.sshd.common.NamedResource

findByName, findFirstMatchByName, getNameList, getNames, ofName, removeByName, safeCompareByName

Methods inherited from interface org.apache.sshd.common.session.SessionHolder

getSessionContext

Field Detail

factory

protected final DHFactory factory

expected

protected byte expected

min

protected int min

prf

protected int prf

max

protected int max

dh

protected AbstractDH dh

g

protected byte[] g

p

private byte[] p

pValue

private java.math.BigInteger pValue

Constructor Detail

DHGEXClient

protected DHGEXClient(DHFactory factory,
                      Session session)

Method Detail

getName

public final java.lang.String getName()

Returns:

The resource name

getP

protected byte[] getP()

getPValue

protected java.math.BigInteger getPValue()

setP

protected void setP(byte[] p)

validateEValue

protected void validateEValue()
                       throws java.lang.Exception

Throws:

java.lang.Exception

validateFValue

protected void validateFValue()
                       throws java.lang.Exception

Throws:

java.lang.Exception

newFactory

public static KeyExchangeFactory newFactory(DHFactory delegate)

init

public void init(byte[] v_s,
                 byte[] v_c,
                 byte[] i_s,
                 byte[] i_c)
          throws java.lang.Exception

Description copied from interface: KeyExchange

Initialize the key exchange algorithm.

Specified by:

init in interface KeyExchange

Overrides:

init in class AbstractDHKeyExchange

Parameters:

v_s - the server identification string

v_c - the client identification string

i_s - the server key initialization packet

i_c - the client key initialization packet

Throws:

java.lang.Exception - if an error occurs

next

public boolean next(int cmd,
                    Buffer buffer)
             throws java.lang.Exception

Description copied from interface: KeyExchange

Process the next packet

Parameters:

cmd - the command

buffer - the packet contents positioned after the command

Returns:

a boolean indicating if the processing is complete or if more packets are to be received

Throws:

java.lang.Exception - if an error occurs

getDH

protected AbstractDH getDH(java.math.BigInteger p,
                           java.math.BigInteger g)
                    throws java.lang.Exception

Throws:

java.lang.Exception