fzstego

Adaptive fuzzy logic-based steganographic framework in C

This project implements an adaptive steganographic framework in C, based on the research paper "Adaptive Fuzzy Logic-Based Steganographic Encryption Framework" by Joshi and Bhand (2026).

References

This framework implements the research from:

• Joshi, A., & Bhand, K. (2026). Adaptive Fuzzy Logic-Based Steganographic Encryption Framework: A Comprehensive Experimental Evaluation. arXiv:2603.18105v1 [cs.CR].
• Link: https://arxiv.org/abs/2603.18105

Key Features

• Content-Adaptive Embedding: Calculates a pixel-wise embedding depth of 1–3 bits using local entropy, edge magnitude, and payload pressure as inputs.
• Encoder-Decoder Synchronization: Uses an LSB-invariant feature extraction strategy (lower-bit stripping) to ensure the receiver can recompute the exact same adaptive depth map from the stego-image.
• High Visual Fidelity: Designed to outperform fixed LSB methods, achieving high PSNR values by protecting smooth areas and utilizing textured regions.

Getting Started

Requirements

• GCC
• Make

Installation & Build

# Clone the repository
git clone https://github.com/iiEliJas/fzstego.git
cd fzstego

# Build the demo and tests
make

Note: The executables for the demo and tests all need bmp image files to work.