Package org.apache.sshd.common.kex

Class DHG

java.lang.Object

org.apache.sshd.common.kex.AbstractDH

org.apache.sshd.common.kex.DHG

public class DHG
extends AbstractDH

Diffie-Hellman key generator.

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field	Description
static final String	KEX_TYPE

Fields inherited from class org.apache.sshd.common.kex.AbstractDH

myKeyAgree

Constructor Summary

Constructors

Constructor	Description
DHG(Factory<? extends Digest> digestFactory)
DHG(Factory<? extends Digest> digestFactory, BigInteger pValue, BigInteger gValue)

Method Summary

Modifier and Type	Method	Description
protected byte[]	calculateE()	Lazy-called by AbstractDH.getE() if the public key data has not been generated yet.
protected byte[]	calculateK()	Lazy-called by AbstractDH.getK() if the shared secret data has not been calculated yet
BigInteger	getG()
Digest	getHash()
BigInteger	getP()
void	setF(byte[] f)
void	setF(BigInteger f)
void	setG(byte[] g)
void	setG(BigInteger g)
void	setP(byte[] p)
void	setP(BigInteger p)
String	toString()

Methods inherited from class org.apache.sshd.common.kex.AbstractDH

checkKeyAgreementNecessity, getE, getK, getKeyEncapsulation, isPublicDataAvailable, isSharedSecretAvailable, putE, putF, stripLeadingZeroes

Methods inherited from class java.lang.Object

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

Field Details

KEX_TYPE

public static final String KEX_TYPE

See Also:

• Constant Field Values

Constructor Details

DHG

public DHG(Factory<? extends Digest> digestFactory)
    throws Exception

Throws:

Exception

DHG

public DHG(Factory<? extends Digest> digestFactory,
 BigInteger pValue,
 BigInteger gValue)
    throws Exception

Throws:

Exception

Method Details

calculateE

protected byte[] calculateE()
                     throws Exception

Description copied from class: AbstractDH

Lazy-called by AbstractDH.getE() if the public key data has not been generated yet.

Specified by:

calculateE in class AbstractDH

Returns:

The calculated public key data

Throws:

Exception - If failed to generate the relevant data

calculateK

protected byte[] calculateK()
                     throws Exception

Description copied from class: AbstractDH

Lazy-called by AbstractDH.getK() if the shared secret data has not been calculated yet

Specified by:

calculateK in class AbstractDH

Returns:

The shared secret data

Throws:

Exception - If failed to calculate it

setP

public void setP(byte[] p)

setG

public void setG(byte[] g)

setF

public void setF(byte[] f)

Specified by:

setF in class AbstractDH

getP

public BigInteger getP()

setP

public void setP(BigInteger p)

getG

public BigInteger getG()

setG

public void setG(BigInteger g)

setF

public void setF(BigInteger f)

getHash

public Digest getHash()
               throws Exception

Specified by:

getHash in class AbstractDH

Throws:

Exception

toString

public String toString()

Overrides:

toString in class AbstractDH