org.quark.stegnos.Encryption Class Reference

Inheritance diagram for org.quark.stegnos.Encryption:

Static Public Member Functions
static void	encodeImage (String passphrase, PImage img, int format)
static void	decodeImage (String passphrase, PImage img, int format)

Static Package Functions
static void	encodeImage (String passphrase, PImage img, int format, int nbcKeep)
static void	decodeImage (String passphrase, PImage img, int format, int nbcKeep)
static void	encodeText (String passphrase, int[] d)
static void	decodeText (String passphrase, int[] d)

Additional Inherited Members
Public Attributes inherited from org.quark.stegnos.SteganosConstants
int	TEXT_BURDEN = 0x0
int	IMAGE_BURDEN = 0x1
int	RGB = PConstants.RGB
int	ARGB = PConstants.ARGB
int	UTF8 = 0x1
int[]	CARRIER3_BITS = { 0x00000000, 0x00010101, 0x00030303, 0x00070707, 0x000f0f0f, 0x001f1f1f, 0x003f3f3f, 0x007f7f7f, 0x00ffffff }
int[]	CARRIER4_BITS = { 0x00000000, 0x01010101, 0x03030303, 0x07070707, 0x0f0f0f0f, 0x1f1f1f1f, 0x3f3f3f3f, 0x7f7f7f7f, 0xffffffff }
int[]	RGB_MERGED_BITS = { 0x00000000, 0xe0000000, 0xfc000000, 0xff800000, 0xfff00000, 0xfffe0000, 0xffffc000, 0xfffff800, 0xffffff00 }
int[]	ARGB_MERGED_BITS = { 0x00000000, 0xf0000000, 0xff000000, 0xfff00000, 0xffff0000, 0xfffff000, 0xffffff00, 0xfffffff0, 0xffffffff }

Detailed Description

This class provides a number of methods used internally by the library to encrypt / decrypt images and text. The image methods are the only ones made public to the library user.

Author

Peter Lager

Member Function Documentation

static void org.quark.stegnos.Encryption.decodeImage ( String  passphrase, PImage  img, int  format  )

static

Decode the image.
The passphrase and format must match the ones used to encrypt the image originally.

Parameters

passphrase	the pass phrase used to decrypt the image
img	the image to encrypt
format	either ARGB or RGB

static void org.quark.stegnos.Encryption.decodeImage ( String  passphrase, PImage  img, int  format, int  nbcKeep  )

staticpackage

Decode the retrieved image.

Parameters

passphrase	the pass-phrase or password
img	the image to encode
format	image format either RGB or ARGB
nbcKeep	the number of bits per channel being kept

static void org.quark.stegnos.Encryption.decodeText ( String  passphrase, int[]  d  )

staticpackage

Decode the text retrieved from the image.

Parameters

passphrase	the pass-phrase or password
d	UTF-8 characters in an int array

static void org.quark.stegnos.Encryption.encodeImage ( String  passphrase, PImage  img, int  format  )

static

Encode the image.

Parameters

passphrase	the pass phrase used to encrypt the image
img	the image to encrypt
format	either ARGB or RGB

static void org.quark.stegnos.Encryption.encodeImage ( String  passphrase, PImage  img, int  format, int  nbcKeep  )

staticpackage

Encode the image to hide.

Parameters

passphrase	the pass-phrase or password
img	the image to encode
format	image format either RGB or ARGB
nbcKeep	the number of bits per channel being kept

static void org.quark.stegnos.Encryption.encodeText ( String  passphrase, int[]  d  )

staticpackage

Encode the text to hide.

Parameters

passphrase	the pass-phrase or password
d	UTF-8 characters in an int array

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The documentation for this class was generated from the following file:

• /Users/peter/git/steganography-repos/Stenography/src/org/quark/stegnos/Encryption.java