Package net.schmizz.sshj.transport.kex

Class AbstractDHG

java.lang.Object

net.schmizz.sshj.transport.kex.KeyExchangeBase

net.schmizz.sshj.transport.kex.AbstractDH

net.schmizz.sshj.transport.kex.AbstractDHG

All Implemented Interfaces:

KeyExchange

Direct Known Subclasses:

Curve25519SHA256, DHG, DHG1, DHG14, ECDHNistP

public abstract class AbstractDHG
extends AbstractDH

Base class for DHG key exchange algorithms. Implementations will only have to configure the required data on the DH class in the

Field Summary

Fields

Modifier and Type	Field	Description
private final org.slf4j.Logger	log

Fields inherited from class net.schmizz.sshj.transport.kex.AbstractDH

dh

Fields inherited from class net.schmizz.sshj.transport.kex.KeyExchangeBase

digest, H, hostKey, trans

Constructor Summary

Constructors

Constructor	Description
AbstractDHG(DHBase dhBase, Digest digest)

Method Summary

Modifier and Type	Method	Description
void	init(Transport trans, String V_S, String V_C, byte[] I_S, byte[] I_C)	Initialize the key exchange algorithm.
protected abstract void	initDH(DHBase dh)
boolean	next(Message msg, SSHPacket packet)	Process the next packet
private void	verifyCertificate(byte[] K_S)

Methods inherited from class net.schmizz.sshj.transport.kex.AbstractDH

getK

Methods inherited from class net.schmizz.sshj.transport.kex.KeyExchangeBase

getH, getHash, getHostKey, initializedBuffer

Methods inherited from class java.lang.Object

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

Field Details

log

private final org.slf4j.Logger log

Constructor Details

AbstractDHG

public AbstractDHG(DHBase dhBase,
 Digest digest)

Method Details

init

public void init(Transport trans,
 String V_S,
 String V_C,
 byte[] I_S,
 byte[] I_C)
          throws GeneralSecurityException,
TransportException

Description copied from interface: KeyExchange

Initialize the key exchange algorithm.

Specified by:

init in interface KeyExchange

Overrides:

init in class KeyExchangeBase

Parameters:

trans - the transport

V_S - the server identification string

V_C - the client identification string

I_S - the server key init packet

I_C - the client key init packet

Throws:

GeneralSecurityException

TransportException - if there is an error sending a packet

next

public boolean next(Message msg,
 SSHPacket packet)
             throws GeneralSecurityException,
TransportException

Description copied from interface: KeyExchange

Process the next packet

Parameters:

msg - message identifier

packet - the packet

Returns:

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

Throws:

GeneralSecurityException

TransportException - if there is an error sending a packet

verifyCertificate

private void verifyCertificate(byte[] K_S)
                        throws TransportException

Throws:

TransportException

initDH

protected abstract void initDH(DHBase dh)
                        throws GeneralSecurityException

Throws:

GeneralSecurityException