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

java.lang.Object
- net.i2p.data.SimpleDataStructure
- - net.i2p.data.SessionKey

All Implemented Interfaces:

DataStructure

Direct Known Subclasses:

SessionKeyAndNonce
```
public class SessionKey
extends SimpleDataStructure
```
Defines the SessionKey as defined by the I2P data structure spec. A session key is a 32 byte Integer. To create one with random data, use I2PAppContext.keyGenerator().generateSessionKey().

Author:

jrandom

Field Summary

Fields
Modifier and Type Field Description

static SessionKey INVALID_KEY
A key with all zeroes in the data

static int KEYSIZE_BYTES
- Fields inherited from class net.i2p.data.SimpleDataStructure
  _data

Constructor Summary

Constructors
Constructor Description

SessionKey()

SessionKey(byte[] data)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`getPreparedKey()`	retrieve an internal representation of the session key, as known by the AES engine used.
`int`	`length()`	The legal length of the byte array in this data structure
`void`	`setData(byte[] data)`	Sets the data.
`void`	`setPreparedKey(Object obj)`

Methods inherited from class net.i2p.data.SimpleDataStructure
calculateHash, equals, fromBase64, fromByteArray, getData, hashCode, read, readBytes, toBase64, toByteArray, toString, writeBytes

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

- Field Detail
  - KEYSIZE_BYTES
```
public static final int KEYSIZE_BYTES
```
    See Also:
    
    Constant Field Values
  - INVALID_KEY
```
public static final SessionKey INVALID_KEY
```
    A key with all zeroes in the data
- Constructor Detail
  - SessionKey
```
public SessionKey()
```
  - SessionKey
```
public SessionKey(byte[] data)
```
- Method Detail
  - length
```
public int length()
```
    Description copied from class: SimpleDataStructure
    
    The legal length of the byte array in this data structure
    
    Specified by:
    
    length in class SimpleDataStructure
  - setData
```
public void setData(byte[] data)
```
    Sets the data.
    
    Overrides:
    
    setData in class SimpleDataStructure
    
    Parameters:
    
    data - 32 bytes, or null
    
    Throws:
    
    IllegalArgumentException - if data is not the legal number of bytes (but null is ok)
    
    RuntimeException - if data already set.
  - getPreparedKey
```
public Object getPreparedKey()
```
    retrieve an internal representation of the session key, as known by the AES engine used. this can be reused safely
  - setPreparedKey
```
public void setPreparedKey(Object obj)
```