Package com.openstego.desktop

Class WatermarkingPlugin<C extends OpenStegoConfig>

java.lang.Object

com.openstego.desktop.OpenStegoPlugin<C>

com.openstego.desktop.WatermarkingPlugin<C>

public abstract class WatermarkingPlugin<C extends OpenStegoConfig>
extends OpenStegoPlugin<C>

Abstract class for stego plugins for OpenStego purpose of which is watermarking. It implements few methods which are specific for watermarking, and provides dummy implementation for the methods which are specific to data hiding purposes so that sub-class does not need to implement them

See Also:

DataHidingPlugin

Nested Class Summary

Nested classes/interfaces inherited from class com.openstego.desktop.OpenStegoPlugin

OpenStegoPlugin.Purpose

Field Summary

Fields inherited from class com.openstego.desktop.OpenStegoPlugin

config

Constructor Summary

Constructors

Constructor	Description
WatermarkingPlugin()

Method Summary

Modifier and Type	Method	Description
String	extractMsgFileName(byte[] stegoData, String stegoFileName)	Method to extract the message file name from the stego data.
double	getHighWatermarkLevel()	Method to get correlation value which above which it can be considered that watermark strength is high (default to 0.5 which is safe for general watermarking)
double	getLowWatermarkLevel()	Method to get correlation value which below which it can be considered that watermark strength is low (default to 0.2 which is safe for general watermarking)
List<OpenStegoPlugin.Purpose>	getPurposes()	Gives the purpose(s) of the plugin.

Methods inherited from class com.openstego.desktop.OpenStegoPlugin

checkMark, createConfig, createConfig, embedData, extractData, generateSignature, getConfig, getDescription, getDiff, getEmbedOptionsUI, getName, getPurposesLabel, getReadableFileExtensions, getUsage, getWatermarkCorrelation, getWritableFileExtensions, populateStdCmdLineOptions, resetConfig, resetConfig

Methods inherited from class java.lang.Object

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

Constructor Detail

WatermarkingPlugin

public WatermarkingPlugin()

Method Detail

getPurposes

public final List<OpenStegoPlugin.Purpose> getPurposes()

Gives the purpose(s) of the plugin. This implementation returns only one value - Watermarking

Specified by:

getPurposes in class OpenStegoPlugin<C extends OpenStegoConfig>

Returns:

Purpose(s) of the plugin

extractMsgFileName

public final String extractMsgFileName(byte[] stegoData,
                                       String stegoFileName)

Method to extract the message file name from the stego data. This implementation returns null as this class is for watermarking plugins only

Specified by:

extractMsgFileName in class OpenStegoPlugin<C extends OpenStegoConfig>

Parameters:

stegoData - Stego data containing the message

stegoFileName - Name of the stego file

Returns:

Message file name

getHighWatermarkLevel

public double getHighWatermarkLevel()

Method to get correlation value which above which it can be considered that watermark strength is high (default to 0.5 which is safe for general watermarking)

Specified by:

getHighWatermarkLevel in class OpenStegoPlugin<C extends OpenStegoConfig>

Returns:

High watermark

getLowWatermarkLevel

public double getLowWatermarkLevel()

Method to get correlation value which below which it can be considered that watermark strength is low (default to 0.2 which is safe for general watermarking)

Specified by:

getLowWatermarkLevel in class OpenStegoPlugin<C extends OpenStegoConfig>

Returns:

Low watermark