org.apache.sshd.server.kex

Class DHGEX

java.lang.Object

org.apache.sshd.server.kex.DHGEX

All Implemented Interfaces:

KeyExchange

Direct Known Subclasses:

DHGEX256

public class DHGEX
extends java.lang.Object
implements KeyExchange

Server side Diffie Hellman Group Exchange

Author:

Apache MINA SSHD Project

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DHGEX.Factory

Constructor Summary

Constructors

Constructor and Description
DHGEX()

Method Summary

Methods

Modifier and Type	Method and Description
protected DH	getDH(java.math.BigInteger p, java.math.BigInteger g)
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
java.security.PublicKey	getServerKey() Retrieves the server's key
void	init(AbstractSession s, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C) Initialize the key exchange algorithm.
boolean	next(Buffer buffer) Process the next packet

Methods inherited from class java.lang.Object

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

Constructor Detail

DHGEX

public DHGEX()

Method Detail

init

public void init(AbstractSession s,
        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

Parameters:

s - the session using this algorithm

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:

java.lang.Exception - if an error occurs

next

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

Description copied from interface: KeyExchange

Process the next packet

Specified by:

next in interface KeyExchange

Parameters:

buffer - the packet

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

Throws:

java.lang.Exception

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:

getK

public byte[] getK()

Description copied from interface: KeyExchange

Retrieves the computed K parameter

Specified by:

getK in interface KeyExchange

Returns:

getServerKey

public java.security.PublicKey getServerKey()

Description copied from interface: KeyExchange

Retrieves the server's key

Specified by:

getServerKey in interface KeyExchange