org.eclipse.californium.scandium.dtls

Class Random

java.lang.Object

org.eclipse.californium.elements.util.Bytes

org.eclipse.californium.scandium.dtls.Random

public class Random
extends org.eclipse.californium.elements.util.Bytes

A 32-byte value provided by the client and the server in the ClientHello respectively in the ServerHello used later in the protocol to compute the premaster secret. See RFC 5246 for the message format.

Field Summary

Fields inherited from class org.eclipse.californium.elements.util.Bytes

EMPTY

Constructor Summary

Constructors

Constructor and Description
Random()
Random(byte[] randomBytes) Sets the random bytes explicitly.

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	createBytes() Create byte array of 32 bytes initialized with random bytes and time stamp in the first 4 bytes.
String	toString()

Methods inherited from class org.eclipse.californium.elements.util.Bytes

clear, concatenate, concatenate, createBytes, equals, getAsString, getBytes, hashCode, isEmpty, length

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Random

public Random()

Random

public Random(byte[] randomBytes)

Sets the random bytes explicitly.

Parameters:

randomBytes - the bytes to use

Throws:

NullPointerException - if the given array is null

IllegalArgumentException - if the given array's length is not 32

Method Detail

toString

public String toString()

Overrides:

toString in class org.eclipse.californium.elements.util.Bytes

createBytes

public static byte[] createBytes()

Create byte array of 32 bytes initialized with random bytes and time stamp in the first 4 bytes.

Returns:

byte array initialized with random bytes

See Also:

SecureRandom.nextBytes(byte[])