Steganography & Crypto Web App

This project implements a web application for image and audio steganography with cryptographic features.

Project Structure

/project-root
├── frontend/     # React app
├── backend/      # FastAPI app
├── .github/      # Actions workflows
├── .gitignore
└── README.md

Features

• Image Steganography (LSB encoding/decoding)
• Audio Steganography (Echo encoding/decoding)
• Cryptographic Operations (AES, RSA)
• Steganalysis Tools

Getting Started

Frontend

cd frontend
npm install
npm run dev
# http://localhost:3000

Backend

cd backend
python -m venv venv
source venv/bin/activate  # or use Windows command
pip install -r requirements.txt
uvicorn main:app --reload --host 0.0.0.0 --port 8000
# http://localhost:8000/api/health

Development

• Frontend: React + TypeScript + Vite
• Backend: FastAPI + Python
• CI/CD: GitHub Actions

Security Notes

• All cryptographic operations are performed client-side using libsodium
• Audio steganography uses echo embedding
• Image steganography uses LSB (Least Significant Bit) method
• Steganalysis tools are provided for both image and audio analysis

License

MIT