Package zeroecho.sdk.integrations.stegano

package zeroecho.sdk.integrations.stegano

Steganographic integrations for ZeroEcho SDK.

This package provides abstractions and implementations for hiding and recovering messages in digital images. Steganography allows information to be concealed in carrier media so that its presence is not apparent to a casual observer.

Design principles

• All algorithms implement the SteganographyMethod interface, which defines stream-oriented embed and extract operations and supplies a metadata descriptor.
• Supported carrier formats are represented by ImageFormat. Only lossless formats are suitable for direct bit-level embedding, but some algorithms may also provide support for lossy domains such as JPEG with dedicated techniques.
• Methods are designed to operate on InputStream and OutputStream pipelines, making them compatible with large files and streaming workflows.

Extensibility

The package is not limited to one specific algorithm. In addition to classic spatial-domain approaches, implementors can provide methods that operate in the frequency domain (for example, DCT coefficients for JPEG) or more advanced hybrid techniques. New methods can be registered by implementing the SteganographyMethod interface and returning appropriate StegoMetadata.

Typical workflow

 SteganographyMethod method = ...; // e.g. resolved from a registry
 try (InputStream carrier = Files.newInputStream(Path.of("cover.png"));
      InputStream secret  = new ByteArrayInputStream("hello".getBytes(UTF_8));
      InputStream stego   = method.embed(carrier, ImageFormat.PNG, secret)) {
     Files.write(Path.of("stego.png"), stego.readAllBytes());
 }

 try (InputStream stego = Files.newInputStream(Path.of("stego.png"));
      InputStream recovered = method.extract(stego)) {
     String text = new String(recovered.readAllBytes(), UTF_8);
 }
 

Class	Description
ImageFormat	Enumeration of image formats supported for steganographic processing.
LSBSteganographyMethod	Least Significant Bit steganography implementation operating in the spatial domain.
SteganographyMethod	Contract for stream-based steganographic methods.
StegoMetadata	Metadata that describes a steganographic method.