X25519KeyFactory (I2P Anonymous Network - Java Documentation - Version 1.5.0)

java.lang.Object
- java.lang.Thread
- - net.i2p.util.I2PThread
  - - net.i2p.router.transport.crypto.X25519KeyFactory

All Implemented Interfaces:

Runnable, KeyFactory
```
public class X25519KeyFactory
extends I2PThread
implements KeyFactory
```
Try to keep DH pairs at the ready. It's important to do this in a separate thread, because if we run out, the pairs are generated in the NTCP Pumper thread, and it can fall behind.

Since:

0.9.36 from DHSessionKeyFactory.PrecalcRunner

Nested Class Summary
- Nested classes/interfaces inherited from class net.i2p.util.I2PThread
  I2PThread.OOMEventListener
- Nested classes/interfaces inherited from class java.lang.Thread
  Thread.State, Thread.UncaughtExceptionHandler

Field Summary
- Fields inherited from class java.lang.Thread
  MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors
Constructor Description

X25519KeyFactory(I2PAppContext ctx)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`KeyPair`	`getKeys()`	Pulls a prebuilt keypair from the queue, or if not available, construct a new one.
`void`	`returnUnused(KeyPair kp)`	Return an unused DH key builder to be put back onto the queue for reuse.
`void`	`run()`
`void`	`shutdown()`	Note that this stops the singleton precalc thread.

Methods inherited from class net.i2p.util.I2PThread
addOOMEventListener, fireOOM, removeOOMEventListener, start

Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, stop, suspend, toString, yield

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - X25519KeyFactory
```
public X25519KeyFactory(I2PAppContext ctx)
```
- Method Detail
  - shutdown
```
public void shutdown()
```
    Note that this stops the singleton precalc thread. You don't want to do this if there are multiple routers in the JVM. Fix this if you care. See Router.shutdown().
  - run
```
public void run()
```
    Specified by:
    
    run in interface Runnable
    
    Overrides:
    
    run in class I2PThread
  - getKeys
```
public KeyPair getKeys()
```
    Pulls a prebuilt keypair from the queue, or if not available, construct a new one.
    
    Specified by:
    
    getKeys in interface KeyFactory
  - returnUnused
```
public void returnUnused(KeyPair kp)
```
    Return an unused DH key builder to be put back onto the queue for reuse.