org.apache.sshd.common.kex.dh

Class AbstractDHKeyExchange

java.lang.Object

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

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

All Implemented Interfaces:

KeyExchange, NamedResource, SessionContextHolder, SessionHolder<Session>

Direct Known Subclasses:

AbstractDHClientKeyExchange, AbstractDHServerKeyExchange

public abstract class AbstractDHKeyExchange
extends AbstractLoggingBean
implements KeyExchange

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	h
protected Digest	hash
protected byte[]	i_c
protected byte[]	i_s
protected byte[]	k
protected byte[]	v_c
protected byte[]	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	AbstractDHKeyExchange(Session session)

Method Summary

Modifier and Type	Method and Description
protected byte[]	getE()
protected BigInteger	getEValue()
protected byte[]	getF()
protected BigInteger	getFValue()
byte[]	getH() Retrieves the computed h parameter
Digest	getHash() The message digest used by this key exchange algorithm.
byte[]	getK() Retrieves the computed k parameter
Session	getSession()
void	init(byte[] v_s, byte[] v_c, byte[] i_s, byte[] i_c) Initialize the key exchange algorithm.
protected void	setE(byte[] e)
protected void	setF(byte[] f)
String	toString()
protected byte[]	updateE(Buffer buffer)
protected byte[]	updateE(byte[] mpInt)
protected byte[]	updateF(Buffer buffer)
protected byte[]	updateF(byte[] mpInt)
protected void	validateEValue(BigInteger pValue)
protected void	validateFValue(BigInteger pValue)

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, next

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

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

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

getSessionContext

Field Detail

v_s

protected byte[] v_s

v_c

protected byte[] v_c

i_s

protected byte[] i_s

i_c

protected byte[] i_c

hash

protected Digest hash

k

protected byte[] k

h

protected byte[] h

Constructor Detail

AbstractDHKeyExchange

protected AbstractDHKeyExchange(Session session)

Method Detail

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

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

getSession

public Session getSession()

Specified by:

getSession in interface SessionHolder<Session>

getHash

public Digest getHash()

Description copied from interface: KeyExchange

The message digest used by this key exchange algorithm.

Specified by:

getHash in interface KeyExchange

Returns:

the message digest

getH

public byte[] getH()

Description copied from interface: KeyExchange

Retrieves the computed h parameter

Specified by:

getH in interface KeyExchange

Returns:

The h parameter

getK

public byte[] getK()

Description copied from interface: KeyExchange

Retrieves the computed k parameter

Specified by:

getK in interface KeyExchange

Returns:

The k parameter

getE

protected byte[] getE()

getEValue

protected BigInteger getEValue()

updateE

protected byte[] updateE(Buffer buffer)

updateE

protected byte[] updateE(byte[] mpInt)

setE

protected void setE(byte[] e)

validateEValue

protected void validateEValue(BigInteger pValue)
                       throws Exception

Throws:

Exception

getF

protected byte[] getF()

getFValue

protected BigInteger getFValue()

updateF

protected byte[] updateF(Buffer buffer)

updateF

protected byte[] updateF(byte[] mpInt)

setF

protected void setF(byte[] f)

validateFValue

protected void validateFValue(BigInteger pValue)
                       throws Exception

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object