anon.mixminion.message
Class ReplyBlock

java.lang.Object
  anon.mixminion.message.ReplyBlock

public class ReplyBlock
extends java.lang.Object

Author:

Stefan Roenisch Window - Preferences - Java - Code Style - Code Templates

Field Summary

(package private) static int	KEY_LEN
(package private) static long	KEY_LIFETIME
private byte[]	m_headerbytes
private byte[]	m_longterm_secret
private java.lang.String	m_myaddress
private RoutingInformation	m_myrouting
private java.util.Vector	m_path
private byte[]	m_sharedSecret
private long	m_timetolive

Constructor Summary

ReplyBlock(RoutingInformation routingInfo, byte[] header, byte[] sharedsecret, long time)
Constructor 2 used to instantiate a ReplyBlock Object, used to parse a ReplyBlock out of a message call parseReplyBlock(String) to complete iT!

ReplyBlock(java.lang.String myaddress, java.util.Vector path, byte[] usersecret)
Constructor 1 used to build a replyblock, which is appended to a message call build() to complete it!

Method Summary

void	buildBlock() builds the replyHeader
private static int	byteToInt(byte[] b, int offset) Calculates the int value of a given ByteArray
byte[]	getHeaderBytes() Returns the ReplyHeader as Bytes
byte[]	getReplyBlockasBytes() Returns the Replyblock as described underwards
java.lang.String	getReplyBlockasString()
RoutingInformation	getRouting() Returns the RoutingInformation of the First Server in the Path of the ReplyBlock, needed for the Crossover-Point
byte[]	getSharedSecret() Returns the End-to End shared Secret
static java.util.Vector	parseReplyBlocks(java.lang.String message, byte[] block) Parses a given payload for a ReplyBlock and returns it, return null, when no ReplyBlock is detected
static java.lang.String	removeRepyBlocks(java.lang.String message) Removes a ascii-armored replyblock from a given payload
boolean	timetoliveIsOK() tests whether the replyblock is not older then 3 months

Methods inherited from class java.lang.Object

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

Field Detail

KEY_LEN

static final int KEY_LEN

See Also:

Constant Field Values

KEY_LIFETIME

static final long KEY_LIFETIME

See Also:

Constant Field Values

m_sharedSecret

private byte[] m_sharedSecret

m_path

private java.util.Vector m_path

m_longterm_secret

private byte[] m_longterm_secret

m_myrouting

private RoutingInformation m_myrouting

m_headerbytes

private byte[] m_headerbytes

m_myaddress

private java.lang.String m_myaddress

m_timetolive

private long m_timetolive

Constructor Detail

ReplyBlock

public ReplyBlock(java.lang.String myaddress,
                  java.util.Vector path,
                  byte[] usersecret)

Constructor 1 used to build a replyblock, which is appended to a message call build() to complete it!

Parameters:

myadress -

path -

usersecret -

ReplyBlock

public ReplyBlock(RoutingInformation routingInfo,
                  byte[] header,
                  byte[] sharedsecret,
                  long time)

Constructor 2 used to instantiate a ReplyBlock Object, used to parse a ReplyBlock out of a message call parseReplyBlock(String) to complete iT!

Parameters:

routingInfo -

header -

sharedsecret -

time -

Method Detail

buildBlock

public void buildBlock()

builds the replyHeader

getHeaderBytes

public byte[] getHeaderBytes()

Returns the ReplyHeader as Bytes

Returns:

the replyHeader

getSharedSecret

public byte[] getSharedSecret()

Returns the End-to End shared Secret

Returns:

sharedSecret End to End

getReplyBlockasBytes

public byte[] getReplyBlockasBytes()

Returns the Replyblock as described underwards

Returns:

ReplyBlock as Bytes

getReplyBlockasString

public java.lang.String getReplyBlockasString()

Returns:

Base64-encoded ReplyBlock with ascii armor

getRouting

public RoutingInformation getRouting()

Returns the RoutingInformation of the First Server in the Path of the ReplyBlock, needed for the Crossover-Point

Returns:

parseReplyBlocks

public static java.util.Vector parseReplyBlocks(java.lang.String message,
                                                byte[] block)
                                         throws java.io.IOException

Parses a given payload for a ReplyBlock and returns it, return null, when no ReplyBlock is detected

Parameters:

message -

block -

Returns:

Throws:

java.io.IOException

removeRepyBlocks

public static java.lang.String removeRepyBlocks(java.lang.String message)
                                         throws java.io.IOException

Removes a ascii-armored replyblock from a given payload

Parameters:

message -

Returns:

message without the replyblock

Throws:

java.io.IOException

timetoliveIsOK

public boolean timetoliveIsOK()

tests whether the replyblock is not older then 3 months

Returns:

byteToInt

private static int byteToInt(byte[] b,
                             int offset)

Calculates the int value of a given ByteArray

Parameters:

b -

offset -

Returns:

int value of the bytearray