Class CryptoSTSEngineImpl

java.lang.Object

com.biglybt.core.security.impl.CryptoSTSEngineImpl

All Implemented Interfaces:

CryptoSTSEngine

final class CryptoSTSEngineImpl
extends Object
implements CryptoSTSEngine

STS authentication protocol using a symmetric 4 message ECDH/ECDSA handshake

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	CryptoSTSEngineImpl.InternalDH

Field Summary

Fields

Modifier and Type	Field	Description
private CryptoSTSEngineImpl.InternalDH	ecDH
private KeyPair	ephemeralKeyPair
private final PrivateKey	myPrivateKey
private final PublicKey	myPublicKey
private PublicKey	remotePubKey
private byte[]	sharedSecret
static final int	VERSION

Constructor Summary

Constructors

Constructor	Description
CryptoSTSEngineImpl(PublicKey _myPub, PrivateKey _myPriv)

Method Summary

Modifier and Type	Method	Description
void	getAuth(ByteBuffer message)
protected byte[]	getBytes(ByteBuffer buffer, int max_size)
protected int	getInt(ByteBuffer buffer, int max_size)
void	getKeys(ByteBuffer message)
void	getMessage(ByteBuffer buffer, boolean keys)
byte[]	getRemotePublicKey()
byte[]	getSharedSecret()
void	putAuth(ByteBuffer message)
protected void	putBytes(ByteBuffer buffer, byte[] value, int max_size)
protected void	putInt(ByteBuffer buffer, int value, int max_size)
void	putKeys(ByteBuffer message)
void	putMessage(ByteBuffer message, boolean keys)

Methods inherited from class Object

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

Field Details

VERSION

public static final int VERSION

See Also:

• Constant Field Values

ephemeralKeyPair

private KeyPair ephemeralKeyPair

myPublicKey

private final PublicKey myPublicKey

myPrivateKey

private final PrivateKey myPrivateKey

remotePubKey

private PublicKey remotePubKey

sharedSecret

private byte[] sharedSecret

ecDH

private CryptoSTSEngineImpl.InternalDH ecDH

Constructor Details

CryptoSTSEngineImpl

CryptoSTSEngineImpl(PublicKey _myPub,
 PrivateKey _myPriv)
             throws CryptoManagerException

Parameters:

myIdent - keypair representing our current identity

Throws:

CryptoManagerException

Method Details

getKeys

public void getKeys(ByteBuffer message)
             throws CryptoManagerException

Specified by:

getKeys in interface CryptoSTSEngine

Throws:

CryptoManagerException

putKeys

public void putKeys(ByteBuffer message)
             throws CryptoManagerException

Specified by:

putKeys in interface CryptoSTSEngine

Throws:

CryptoManagerException

getAuth

public void getAuth(ByteBuffer message)
             throws CryptoManagerException

Specified by:

getAuth in interface CryptoSTSEngine

Throws:

CryptoManagerException

putAuth

public void putAuth(ByteBuffer message)
             throws CryptoManagerException

Specified by:

putAuth in interface CryptoSTSEngine

Throws:

CryptoManagerException

putMessage

public void putMessage(ByteBuffer message,
 boolean keys)
                throws CryptoManagerException

Throws:

CryptoManagerException

getMessage

public void getMessage(ByteBuffer buffer,
 boolean keys)
                throws CryptoManagerException

Throws:

CryptoManagerException

getSharedSecret

public byte[] getSharedSecret()
                       throws CryptoManagerException

Specified by:

getSharedSecret in interface CryptoSTSEngine

Throws:

CryptoManagerException

getRemotePublicKey

public byte[] getRemotePublicKey()
                          throws CryptoManagerException

Specified by:

getRemotePublicKey in interface CryptoSTSEngine

Throws:

CryptoManagerException

getInt

protected int getInt(ByteBuffer buffer,
 int max_size)
              throws CryptoManagerException

Throws:

CryptoManagerException

getBytes

protected byte[] getBytes(ByteBuffer buffer,
 int max_size)
                   throws CryptoManagerException

Throws:

CryptoManagerException

putInt

protected void putInt(ByteBuffer buffer,
 int value,
 int max_size)
               throws CryptoManagerException

Throws:

CryptoManagerException

putBytes

protected void putBytes(ByteBuffer buffer,
 byte[] value,
 int max_size)
                 throws CryptoManagerException

Throws:

CryptoManagerException