net.i2p.router.transport.ntcp.OutboundNTCP2State

All Implemented Interfaces:: EstablishState

class OutboundNTCP2State
extends Object
implements EstablishState

NTCP 2 only. We are Alice. Also contains static constants and methods used by InboundEstablishState for NTCP2. Does not extend EstablishBase.

Since:: 0.9.35

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`IV_SIZE`
`static int`	`KEY_SIZE`
`static int`	`MAC_SIZE`
`static long`	`MAX_SKEW`	in SECONDS
`static int`	`MSG1_SIZE`	64
`static int`	`MSG2_SIZE`
`static int`	`MSG3P1_SIZE`	48
`static int`	`OPTIONS1_SIZE`
`static int`	`OPTIONS2_SIZE`
`static int`	`TOTAL1_MAX`	one less than 288 byte NTCP1 msg 1
`static byte[]`	`ZEROKEY`

Constructor Summary

Constructors

Constructor Description

OutboundNTCP2State(RouterContext ctx, NTCPTransport transport, NTCPConnection con)

Method Summary

Modifier and Type	Method	Description
`void`	`close(String reason, Exception e)`	Release resources on timeout.
`protected void`	`fail(String reason)`
`protected void`	`fail(String reason, Exception e)`
`protected void`	`fail(String reason, Exception e, boolean bySkew)`
`(package private) static byte[][]`	`generateSipHashKeys(RouterContext ctx, HandshakeState state)`	KDF for SipHash
`int`	`getVersion()`	Get the NTCP version
`boolean`	`isComplete()`	Don't synchronize this, deadlocks all over.
`boolean`	`isCorrupt()`	did the handshake fail for some reason?
`void`	`prepareOutbound()`	We are Alice.
`void`	`receive(ByteBuffer src)`	Parse the contents of the buffer as part of the handshake.
`String`	`toString()`

Methods inherited from class java.lang.Object

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

Field Details
- KEY_SIZE
  
  public static final int KEY_SIZE
  
  See Also:
  
  Constant Field Values
- MAC_SIZE
  
  public static final int MAC_SIZE
  
  See Also:
  
  Constant Field Values
- IV_SIZE
  
  public static final int IV_SIZE
  
  See Also:
  
  Constant Field Values
- OPTIONS1_SIZE
  
  public static final int OPTIONS1_SIZE
  
  See Also:
  
  Constant Field Values
- MSG1_SIZE
  
  public static final int MSG1_SIZE
  
  64
  
  See Also:
  
  Constant Field Values
- TOTAL1_MAX
  
  public static final int TOTAL1_MAX
  
  one less than 288 byte NTCP1 msg 1
  
  See Also:
  
  Constant Field Values
- OPTIONS2_SIZE
  
  public static final int OPTIONS2_SIZE
  
  See Also:
  
  Constant Field Values
- MSG2_SIZE
  
  public static final int MSG2_SIZE
  
  See Also:
  
  Constant Field Values
- MSG3P1_SIZE
  
  public static final int MSG3P1_SIZE
  
  48
  
  See Also:
  
  Constant Field Values
- MAX_SKEW
  
  public static final long MAX_SKEW
  
  in SECONDS
  
  See Also:
  
  Constant Field Values
- ZEROKEY
  
  public static final byte[] ZEROKEY
Constructor Details
- OutboundNTCP2State
  
  public OutboundNTCP2State(RouterContext ctx, NTCPTransport transport, NTCPConnection con)
  
  Throws:
  
  IllegalArgumentException - on bad address in the con
Method Details
- receive
  
  public void receive(ByteBuffer src)
  
  Parse the contents of the buffer as part of the handshake. All data must be copied out of the buffer as Reader.processRead() will return it to the pool.
  
  Specified by:
  
  receive in interface EstablishState
- isCorrupt
  
  public boolean isCorrupt()
  
  did the handshake fail for some reason?
  
  Specified by:
  
  isCorrupt in interface EstablishState
- isComplete
  
  public boolean isComplete()
  
  Don't synchronize this, deadlocks all over.
  
  Specified by:
  
  isComplete in interface EstablishState
  
  Returns:
  
  is the handshake complete and valid?
- getVersion
  
  public int getVersion()
  
  Get the NTCP version
  
  Specified by:
  
  getVersion in interface EstablishState
  
  Returns:
  
  2
- prepareOutbound
  
  public void prepareOutbound()
  
  We are Alice. We are establishing an outbound connection, so prepare ourselves by writing the first message in the handshake. Encrypt X and write X, the options block, and the padding. Save last half of encrypted X as IV for message 2 AES.
  
  Specified by:
  
  prepareOutbound in interface EstablishState
  
  Throws:
  
  IllegalStateException
- generateSipHashKeys
  
  static byte[][] generateSipHashKeys(RouterContext ctx, HandshakeState state)
  
  KDF for SipHash
  
  Returns:
  
  rv[0] is sip_ab, rv[1] is sip_ba
- close
  
  public void close(String reason, Exception e)
  
  Release resources on timeout.
  
  Specified by:
  
  close in interface EstablishState
  
  Parameters:
  
  e - may be null
  
  Since:
  
  0.9.16
- fail
  
  protected void fail(String reason)
- fail
  
  protected void fail(String reason, Exception e)
- fail
  
  protected void fail(String reason, Exception e, boolean bySkew)
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object

Class OutboundNTCP2State

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Details

Constructor Details

Method Details