anon.crypto.tinytls.keyexchange
Class DHE_RSA_Key_Exchange

java.lang.Object
  anon.crypto.tinytls.keyexchange.Key_Exchange
      anon.crypto.tinytls.keyexchange.DHE_RSA_Key_Exchange

public class DHE_RSA_Key_Exchange
extends Key_Exchange

Author:

stefan Diffie Hellman Key Exchange with a RSA signed Certificate

Field Summary

private static byte[]	CLIENTFINISHEDLABEL
private static org.bouncycastle.crypto.params.DHParameters	DH_PARAMS
private static byte[]	KEYEXPANSION
private byte[]	m_clientrandom
private org.bouncycastle.crypto.agreement.DHBasicAgreement	m_dhe
private org.bouncycastle.crypto.params.DHParameters	m_dhparams
private org.bouncycastle.crypto.params.DHPublicKeyParameters	m_dhserverpub
private byte[]	m_mastersecret
private byte[]	m_premastersecret
private byte[]	m_serverrandom
private static byte[]	MASTERSECRET
private static int	MAXKEYMATERIALLENGTH
private static java.math.BigInteger	SAFEPRIME
private static byte[]	SERVERFINISHEDLABEL

Constructor Summary

DHE_RSA_Key_Exchange()

Method Summary

byte[]	calculateClientFinished(byte[] handshakemessages) generate the client finished message (see RFC2246)
byte[]	calculateClientKeyExchange() generates the client key exchange message (see RFC2246)
byte[]	calculateKeys() calculates the key material (see RFC2246 TLS Record Protocoll)
byte[]	calculateServerFinished(byte[] handshakemessages) calculates server finished message
byte[]	generateServerKeyExchange(IMyPrivateKey key, byte[] clientrandom, byte[] serverrandom)
void	processClientFinished(byte[] verify_data, byte[] handshakemessages) checks the client finished message
void	processClientKeyExchange(java.math.BigInteger dh_y) processes the client key exchange
void	processServerFinished(byte[] b, int len, byte[] handshakemessages) checks the server finished message
void	processServerKeyExchange(byte[] bytes, int bytes_offset, int bytes_len, byte[] clientrandom, byte[] serverrandom, JAPCertificate servercertificate) Decode the server keys and check the certificate

Methods inherited from class java.lang.Object

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

Field Detail

MAXKEYMATERIALLENGTH

private static final int MAXKEYMATERIALLENGTH

See Also:

Constant Field Values

CLIENTFINISHEDLABEL

private static final byte[] CLIENTFINISHEDLABEL

SERVERFINISHEDLABEL

private static final byte[] SERVERFINISHEDLABEL

KEYEXPANSION

private static final byte[] KEYEXPANSION

MASTERSECRET

private static final byte[] MASTERSECRET

SAFEPRIME

private static final java.math.BigInteger SAFEPRIME

DH_PARAMS

private static final org.bouncycastle.crypto.params.DHParameters DH_PARAMS

m_dhparams

private org.bouncycastle.crypto.params.DHParameters m_dhparams

m_dhserverpub

private org.bouncycastle.crypto.params.DHPublicKeyParameters m_dhserverpub

m_premastersecret

private byte[] m_premastersecret

m_mastersecret

private byte[] m_mastersecret

m_clientrandom

private byte[] m_clientrandom

m_serverrandom

private byte[] m_serverrandom

m_dhe

private org.bouncycastle.crypto.agreement.DHBasicAgreement m_dhe

Constructor Detail

DHE_RSA_Key_Exchange

public DHE_RSA_Key_Exchange()

Method Detail

generateServerKeyExchange

public byte[] generateServerKeyExchange(IMyPrivateKey key,
                                        byte[] clientrandom,
                                        byte[] serverrandom)
                                 throws TLSException

Specified by:

generateServerKeyExchange in class Key_Exchange

Throws:

TLSException

processServerKeyExchange

public void processServerKeyExchange(byte[] bytes,
                                     int bytes_offset,
                                     int bytes_len,
                                     byte[] clientrandom,
                                     byte[] serverrandom,
                                     JAPCertificate servercertificate)
                              throws TLSException

Description copied from class: Key_Exchange

Decode the server keys and check the certificate

Specified by:

processServerKeyExchange in class Key_Exchange

clientrandom - clientrandom

serverrandom - serverrandom

Throws:

TLSException

calculateServerFinished

public byte[] calculateServerFinished(byte[] handshakemessages)

Description copied from class: Key_Exchange

calculates server finished message

Specified by:

calculateServerFinished in class Key_Exchange

Parameters:

handshakemessages - handshakemessages

Returns:

server finished message

processServerFinished

public void processServerFinished(byte[] b,
                                  int len,
                                  byte[] handshakemessages)
                           throws TLSException

Description copied from class: Key_Exchange

checks the server finished message

Specified by:

processServerFinished in class Key_Exchange

Parameters:

b - server finished message

Throws:

TLSException

processClientKeyExchange

public void processClientKeyExchange(java.math.BigInteger dh_y)

Description copied from class: Key_Exchange

processes the client key exchange

Specified by:

processClientKeyExchange in class Key_Exchange

Parameters:

dh_y - diffie hellman parameter

calculateClientKeyExchange

public byte[] calculateClientKeyExchange()
                                  throws TLSException

Description copied from class: Key_Exchange

generates the client key exchange message (see RFC2246)

Specified by:

calculateClientKeyExchange in class Key_Exchange

Returns:

client key exchange message

Throws:

TLSException

processClientFinished

public void processClientFinished(byte[] verify_data,
                                  byte[] handshakemessages)
                           throws TLSException

Description copied from class: Key_Exchange

checks the client finished message

Specified by:

processClientFinished in class Key_Exchange

Parameters:

verify_data - verify data

handshakemessages - handshakemessages

Throws:

TLSException

calculateClientFinished

public byte[] calculateClientFinished(byte[] handshakemessages)
                               throws TLSException

Description copied from class: Key_Exchange

generate the client finished message (see RFC2246)

Specified by:

calculateClientFinished in class Key_Exchange

Parameters:

handshakemessages - all handshakemessages that have been send before this

Returns:

client finished message

Throws:

TLSException

calculateKeys

public byte[] calculateKeys()

Description copied from class: Key_Exchange

calculates the key material (see RFC2246 TLS Record Protocoll)

Specified by:

calculateKeys in class Key_Exchange

Returns:

key material