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What It Is\n\nStego Suite demonstrates three steganographic techniques — LSB (Least Significant Bit) substitution, F5-inspired DCT-domain embedding, and WOW-inspired adaptive steganography — alongside their corresponding steganalysis attacks. Steganography hides the existence of a message rather than its content, making it fundamentally different from encryption. The demo covers the complete hiding-and-detection cycle: embed a payload, attempt detection with a chi-squared test, compare sequential vs adaptive embedding strategies, and examine real-world deployments from printer tracking dots to malware covert channels.\n\n## 2. When to Use It\n\n- ✅ Digital watermarking for copyright protection (robust embedding)\n- ✅ Covert communication where the existence of a message must be hidden\n- ✅ Combined with encryption: encrypt first, then hide (strongest model)\n- ✅ Network covert channels (timing-based or header-based)\n- ❌ LSB steganography for any adversarial context — chi-squared test detects it trivially and has since 1999\n- ❌ Steganography alone without encryption — if detected, content is exposed\n- ❌ JPEG LSB embedding — JPEG compression destroys LSB modifications (use DCT-domain tools for JPEG)\n- ❌ Smooth image regions — always embed in textured areas\n\n## 3. Live Demo\n\nLink: https://systemslibrarian.github.io/crypto-lab-stego-suite/\n\nSix exhibits: steganography vs cryptography orientation, LSB substitution with pixel-level visualization and optional AES encryption, chi-squared steganalysis detecting LSB embedding (real statistical test), F5-inspired DCT-domain embedding with 8×8 block transform visualization, WOW-inspired adaptive embedding using texture cost maps, and real-world cases including printer tracking dots, digital watermarking, malware C2 channels, and the current ML steganalysis arms race.\n\n## 4. How to Run Locally\n\n```bash\ngit clone https://github.com/systemslibrarian/crypto-lab-stego-suite\ncd crypto-lab-stego-suite\nnpm install\nnpm run dev\n```\n\n## 5. Part of the Crypto-Lab Suite\n\nPart of [crypto-lab](https://systemslibrarian.github.io/crypto-lab/) — browser-based cryptography demos spanning 2,500 years of cryptographic history to NIST FIPS 2024 post-quantum standards.\n\n\u003e So whether you eat or drink or whatever you do, do it all for the glory of God. — 1 Corinthians 10:31","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-stego-suite","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-stego-suite","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-stego-suite/lists"}