Index

A B C D E F G H I J K L N P R S T U V Z
All Classes and Interfaces|All Packages

A

Algorithm and characteristics - Section in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

B

Base64Stream - Class in zeroecho.ext.content.export

A streaming InputStream that encodes binary input data into Base64 format with optional line prefixes and suffixes for each encoded line.

Base64Stream(InputStream, byte[], int, byte[]) - Constructor for class zeroecho.ext.content.export.Base64Stream

Constructs a new Base64Stream.

BMP - Enum constant in enum class zeroecho.ext.integrations.stegano.ImageFormat

Bitmap format.

C

Capacity - Section in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

D

defaultCapacity - Variable in class zeroecho.ext.integrations.covert.jpeg.Slot

The default capacity, in bytes, of this slot for data embedding.

defaults() - Static method in class zeroecho.ext.integrations.covert.jpeg.Slot

Returns a list of default slot configurations commonly available in standard EXIF metadata.

description() - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Returns the value of the description record component.

Design principles - Section in package zeroecho.ext.integrations.stegano

E

embed(InputStream, ImageFormat, InputStream) - Method in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

Embeds the provided message into the least significant bits of the image and returns a new image stream in the requested lossless format.

embed(InputStream, ImageFormat, InputStream) - Method in interface zeroecho.ext.integrations.stegano.SteganographyMethod

Embeds a message into a source image and produces a new image in the requested format.

embed(Path, InputStream, OutputStream) - Method in class zeroecho.ext.integrations.covert.jpeg.JpegExifEmbedder

Embeds a binary payload into a JPEG file by spreading the data across a series of pre-configured EXIF slots.

english() - Static method in class zeroecho.ext.integrations.covert.TextualCodec.Generator

Creates a new generator using the TextualCodec.Generator.ENGLISH frequency distribution.

ENGLISH - Static variable in class zeroecho.ext.integrations.covert.TextualCodec.Generator

A predefined English character frequency distribution including the space character, based on typical usage in English text.

equals(Object) - Method in class zeroecho.ext.integrations.covert.jpeg.Slot

Compares this slot to another for equality based on tag ID and directory type.

equals(Object) - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Indicates whether some other object is "equal to" this one.

Examples - Section in record class zeroecho.ext.integrations.stegano.StegoMetadata

EXIF - Enum constant in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

EXIF metadata group, containing tags related to camera settings, image capture information, and other extended image metadata defined by the EXIF standard.

Extensibility - Section in package zeroecho.ext.content.export

Extensibility - Section in package zeroecho.ext.integrations.stegano

extract(InputStream) - Method in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

Extracts the embedded message from the least significant bits of the provided image.

extract(InputStream) - Method in interface zeroecho.ext.integrations.stegano.SteganographyMethod

Extracts a hidden message from an image.

extract(Path, OutputStream) - Method in class zeroecho.ext.integrations.covert.jpeg.JpegExifEmbedder

Extracts a binary payload that was previously embedded into the JPEG via EXIF slots.

F

Format a stream as Base64 command lines - Section in package zeroecho.ext.content.export

Format support - Section in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

fullName() - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Returns the value of the fullName record component.

G

Generator(Map) - Constructor for class zeroecho.ext.integrations.covert.TextualCodec.Generator

Constructs a new Generator with the specified character frequency distribution.

getChar() - Method in class zeroecho.ext.integrations.covert.TextualCodec.Generator

Returns the next randomly generated character, avoiding consecutive duplicates when possible.

getChar(double) - Method in class zeroecho.ext.integrations.covert.TextualCodec.Generator

Returns a character based on the provided value in the frequency range.

getMetadata() - Method in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

Returns metadata describing this LSB spatial-domain steganography method.

getMetadata() - Method in interface zeroecho.ext.integrations.stegano.SteganographyMethod

Returns metadata describing this steganographic method.

getText(int) - Method in class zeroecho.ext.integrations.covert.TextualCodec.Generator

Generates a string of the specified length using the configured character frequency distribution.

GPS - Enum constant in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

GPS metadata group, storing geolocation information like latitude, longitude, altitude, and GPS timestamp.

group - Variable in class zeroecho.ext.integrations.covert.jpeg.Slot

The logical group (e.g., EXIF, GPS, TIFF) this slot belongs to.

H

hashCode() - Method in class zeroecho.ext.integrations.covert.jpeg.Slot

Computes a hash code based on the slot's tag and directory.

hashCode() - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Returns a hash code value for this object.

I

ImageFormat - Enum Class in zeroecho.ext.integrations.stegano

Enumeration of image formats supported for steganographic processing.

INTEROP - Enum constant in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

Interoperability metadata group, used to ensure compatibility across different file formats or devices.

J

JPEG - Enum constant in enum class zeroecho.ext.integrations.stegano.ImageFormat

Joint Photographic Experts Group format.

JpegExifEmbedder - Class in zeroecho.ext.integrations.covert.jpeg

Utility class for embedding and extracting binary payloads across multiple EXIF slots in JPEG files.

JpegExifEmbedder() - Constructor for class zeroecho.ext.integrations.covert.jpeg.JpegExifEmbedder

Creates an embedder with no configured EXIF slots.

K

Key elements - Section in package zeroecho.ext.content.export

Key elements - Section in package zeroecho.ext.integrations.covert

Key elements - Section in package zeroecho.ext.integrations.covert.jpeg

L

LSBSteganographyMethod - Class in zeroecho.ext.integrations.stegano

Experimental. This class is part of the zeroecho.ext module, which carries no API stability guarantees and may change or be removed in any future release.

LSBSteganographyMethod() - Constructor for class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

Creates a stateless least-significant-bit steganography processor.

N

name() - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Returns the value of the name record component.

Notes - Section in package zeroecho.ext.integrations.covert

P

parse(String) - Static method in class zeroecho.ext.integrations.covert.jpeg.Slot

Parses a slot specification string into a Slot object.

Payload format and processing - Section in package zeroecho.ext.integrations.covert.jpeg

PNG - Enum constant in enum class zeroecho.ext.integrations.stegano.ImageFormat

Portable Network Graphics format.

R

read() - Method in class zeroecho.ext.content.export.Base64Stream

read(byte[], int, int) - Method in class zeroecho.ext.content.export.Base64Stream

register(String, Slot.SlotGroup, TagInfo, int) - Static method in class zeroecho.ext.integrations.covert.jpeg.Slot

Registers a named predefined slot in the internal registry.

Render an exportable content in a chosen mode - Section in package zeroecho.ext.content.export

S

Scope - Section in package zeroecho.ext.content.export

Security notes - Section in package zeroecho.ext.content.export

setSlots(List) - Method in class zeroecho.ext.integrations.covert.jpeg.JpegExifEmbedder

Configures the list of EXIF slots to be used for payload embedding and extraction.

Slot - Class in zeroecho.ext.integrations.covert.jpeg

Represents a target slot in an EXIF/TIFF metadata directory for covert data embedding.

Slot.SlotGroup - Enum Class in zeroecho.ext.integrations.covert.jpeg

Logical groupings of EXIF/TIFF directories used to categorize slots.

Slot configuration - Section in package zeroecho.ext.integrations.covert.jpeg

SteganographyMethod - Interface in zeroecho.ext.integrations.stegano

Contract for stream-based steganographic methods.

StegoMetadata - Record Class in zeroecho.ext.integrations.stegano

Metadata that describes a steganographic method.

StegoMetadata(String, String, String) - Constructor for record class zeroecho.ext.integrations.stegano.StegoMetadata

Creates an instance of a StegoMetadata record class.

T

tagInfo - Variable in class zeroecho.ext.integrations.covert.jpeg.Slot

Metadata tag info describing the structure of this slot.

TextualCodec - Class in zeroecho.ext.integrations.covert

Experimental. This class is part of the zeroecho.ext module, which carries no API stability guarantees and may change or be removed in any future release.

TextualCodec.Generator - Class in zeroecho.ext.integrations.covert

Generates characters or strings using a frequency-based distribution.

Thread-safety - Section in package zeroecho.ext.integrations.covert.jpeg

THUMBNAIL - Enum constant in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

Thumbnail metadata group, storing metadata and image data for embedded preview thumbnails.

TIFF - Enum constant in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

TIFF metadata group, which includes baseline TIFF tags such as image dimensions, compression type, and color format.

toString() - Method in class zeroecho.ext.integrations.covert.jpeg.Slot

Returns a human-readable representation of the slot, including its tag name and capacity.

toString() - Method in record class zeroecho.ext.integrations.stegano.StegoMetadata

Returns a string representation of this record class.

Typical usage - Section in package zeroecho.ext.content.export

Typical usage - Section in package zeroecho.ext.integrations.covert

Typical workflow - Section in package zeroecho.ext.integrations.stegano

U

Usage - Section in class zeroecho.ext.integrations.stegano.LSBSteganographyMethod

Use cases and extensions - Section in package zeroecho.ext.integrations.covert.jpeg

V

valueOf(String) - Static method in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class zeroecho.ext.integrations.stegano.ImageFormat

Returns the enum constant of this class with the specified name.

values() - Static method in enum class zeroecho.ext.integrations.covert.jpeg.Slot.SlotGroup

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class zeroecho.ext.integrations.stegano.ImageFormat

Returns an array containing the constants of this enum class, in the order they are declared.

Z

zeroecho.ext - module zeroecho.ext

ZeroEcho extensions: content export and covert/steganographic integrations built on the foundation library.

zeroecho.ext.content.export - package zeroecho.ext.content.export

Export helpers and platform deployers for SDK content.

zeroecho.ext.integrations.covert - package zeroecho.ext.integrations.covert

Helpers for generating pseudo-random cover text using character frequency tables.

zeroecho.ext.integrations.covert.jpeg - package zeroecho.ext.integrations.covert.jpeg

Covert data embedding and extraction using JPEG EXIF metadata.

zeroecho.ext.integrations.stegano - package zeroecho.ext.integrations.stegano

Steganographic integrations for ZeroEcho SDK.

A B C D E F G H I J K L N P R S T U V Z
All Classes and Interfaces|All Packages