net.i2p.data
Class SessionKey

java.lang.Object
  extended by net.i2p.data.DataStructureImpl
      extended by net.i2p.data.SessionKey
All Implemented Interfaces:
DataStructure

public class SessionKey
extends DataStructureImpl

Defines the SessionKey as defined by the I2P data structure spec. A session key is 32byte Integer.

Author:
jrandom

Field Summary
static SessionKey INVALID_KEY
           
static int KEYSIZE_BYTES
           
 
Constructor Summary
SessionKey()
           
SessionKey(byte[] data)
           
 
Method Summary
 boolean equals(java.lang.Object obj)
           
 byte[] getData()
           
 java.lang.Object getPreparedKey()
          retrieve an internal representation of the session key, as known by the AES engine used.
 int hashCode()
          the key has enough randomness in it, use the first 4 bytes for speed
 void readBytes(java.io.InputStream in)
          Load up the current object with data from the given stream.
 void setData(byte[] data)
          caveat: this method isn't synchronized with the preparedKey, so don't try to *change* the key data after already doing some encryption/decryption (or if you do change it, be sure this object isn't mid decrypt)
 void setPreparedKey(java.lang.Object obj)
           
 java.lang.String toString()
           
 void writeBytes(java.io.OutputStream out)
          Write out the data structure to the stream, using the format defined in the I2P data structure specification.
 
Methods inherited from class net.i2p.data.DataStructureImpl
calculateHash, fromBase64, fromByteArray, read, toBase64, toByteArray
 
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
Constructor Detail

SessionKey

public SessionKey()

SessionKey

public SessionKey(byte[] data)
Method Detail

getData

public byte[] getData()

setData

public void setData(byte[] data)
caveat: this method isn't synchronized with the preparedKey, so don't try to *change* the key data after already doing some encryption/decryption (or if you do change it, be sure this object isn't mid decrypt)


getPreparedKey

public java.lang.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(java.lang.Object obj)

readBytes

public void readBytes(java.io.InputStream in)
               throws DataFormatException,
                      java.io.IOException
Description copied from interface: DataStructure
Load up the current object with data from the given stream. Data loaded this way must match the I2P data structure specification.

Parameters:
in - stream to read from
Throws:
DataFormatException - if the data is improperly formatted
java.io.IOException - if there was a problem reading the stream

writeBytes

public void writeBytes(java.io.OutputStream out)
                throws DataFormatException,
                       java.io.IOException
Description copied from interface: DataStructure
Write out the data structure to the stream, using the format defined in the I2P data structure specification.

Parameters:
out - stream to write to
Throws:
DataFormatException - if the data was incomplete or not yet ready to be written
java.io.IOException - if there was a problem writing to the stream

equals

public boolean equals(java.lang.Object obj)
Overrides:
equals in class java.lang.Object

hashCode

public int hashCode()
the key has enough randomness in it, use the first 4 bytes for speed

Overrides:
hashCode in class java.lang.Object

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object