accessControl
Class IntegrityCheck

java.lang.Object
  accessControl.IntegrityCheck

final class IntegrityCheck
extends java.lang.Object

Checks integrity of a message by generating a local message authentication code and comparing it to the one included in the message.

This class is thread-safe.

Author:

Karl-Peter Fuchs

Field Summary

private static InternalInformationPortController	internalInformationPort Reference on component InternalInformationPort.
private static java.util.logging.Logger	LOGGER Logger used to log and display information.

Constructor Summary

private

IntegrityCheck() Empty constructor.

Method Summary

private static byte[]	generateMAC(java.security.Key key, byte[] message) Generates and returns a message authentication code for the bypassed message.
private static boolean	isMACCorrect(ChannelEstablishMessage message) Checks if the bypassed ChannelEstablishMessage has integrity.
private static boolean	isMACCorrect(ChannelMessage message) Checks if the bypassed ChannelMessage has integrity.
protected static boolean	isMACCorrect(Message message) Checks if the bypassed message has integrity.

Methods inherited from class java.lang.Object

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

Field Detail

internalInformationPort

private static InternalInformationPortController internalInformationPort

Reference on component InternalInformationPort. Used to display and/or log data and read general settings.

LOGGER

private static final java.util.logging.Logger LOGGER

Logger used to log and display information.

Constructor Detail

IntegrityCheck

private IntegrityCheck()

Empty constructor. Never used since all methods are static.

Method Detail

generateMAC

private static byte[] generateMAC(java.security.Key key,
                                  byte[] message)

Generates and returns a message authentication code for the bypassed message. Method is thread-safe.

Parameters:

key - Key to generate message authentication code with.

message - Message to be authenticated.

Returns:

Message authentication code for the bypassed message.

isMACCorrect

protected static boolean isMACCorrect(Message message)

Checks if the bypassed message has integrity. Method is thread-safe.

Parameters:

message - Message to check.

Returns:

Whether message authentication code is correct or not.

isMACCorrect

private static boolean isMACCorrect(ChannelEstablishMessage message)

Checks if the bypassed ChannelEstablishMessage has integrity. Method is thread-safe.

Parameters:

message - Message to check.

Returns:

Whether message authentication code is correct or not.

isMACCorrect

private static boolean isMACCorrect(ChannelMessage message)

Checks if the bypassed ChannelMessage has integrity. Method is thread-safe.

Parameters:

message - Message to check.

Returns:

Whether message authentication code is correct or not.