org.apache.sshd.server.kex

Class DHGEXServer

java.lang.Object

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

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

org.apache.sshd.server.kex.AbstractDHServerKeyExchange

org.apache.sshd.server.kex.DHGEXServer

All Implemented Interfaces:

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

public class DHGEXServer
extends AbstractDHServerKeyExchange

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field and Description
protected DHG	dh
protected byte	expected
protected DHFactory	factory
protected int	max
protected int	min
protected boolean	oldRequest
protected int	prf

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	DHGEXServer(DHFactory factory, Session session)

Method Summary

Modifier and Type	Method and Description
protected DHG	chooseDH(int min, int prf, int max)
protected DHG	getDH(BigInteger p, BigInteger g)
String	getName()
void	init(byte[] v_s, byte[] v_c, byte[] i_s, byte[] i_c) Initialize the key exchange algorithm.
protected List<Moduli.DhGroup>	loadModuliGroups(ServerSession session)
static KeyExchangeFactory	newFactory(DHFactory factory)
boolean	next(int cmd, Buffer buffer) Process the next packet
protected List<Moduli.DhGroup>	selectModuliGroups(ServerSession session, int min, int prf, int max, List<Moduli.DhGroup> groups)

Methods inherited from class org.apache.sshd.server.kex.AbstractDHServerKeyExchange

getServerSession

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

dh

protected DHG dh

min

protected int min

prf

protected int prf

max

protected int max

expected

protected byte expected

oldRequest

protected boolean oldRequest

Constructor Detail

DHGEXServer

protected DHGEXServer(DHFactory factory,
                      Session session)

Method Detail

getName

public final String getName()

newFactory

public static KeyExchangeFactory newFactory(DHFactory factory)

init

public void init(byte[] v_s,
                 byte[] v_c,
                 byte[] i_s,
                 byte[] i_c)
          throws 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:

Exception - if an error occurs

next

public boolean next(int cmd,
                    Buffer buffer)
             throws 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:

Exception - if an error occurs

chooseDH

protected DHG chooseDH(int min,
                       int prf,
                       int max)
                throws Exception

Throws:

Exception

selectModuliGroups

protected List<Moduli.DhGroup> selectModuliGroups(ServerSession session,
                                                  int min,
                                                  int prf,
                                                  int max,
                                                  List<Moduli.DhGroup> groups)
                                           throws Exception

Throws:

Exception

loadModuliGroups

protected List<Moduli.DhGroup> loadModuliGroups(ServerSession session)
                                         throws IOException

Throws:

IOException

getDH

protected DHG getDH(BigInteger p,
                    BigInteger g)
             throws Exception

Throws:

Exception