Show HN: LLM Steganography to hide text inside another plausible text

Category: security

Tags: steganography, llm, cli

Score: 6.8/10 (Innovation: 7, Technical: 8, Documentation: 7, Utility: 5)

Calgacus-mlx is a Python CLI for encoding secret text into ordinary-looking prose using rank-based LLM steganography on Apple Silicon. It implements a novel protocol where secret message bits are hidden via token ranks in a shared language model's output distribution, enabling lossless covert communication. The project is interesting for its clever combination of MLX, LLMs, and steganography.

Target audience: security researchers, privacy-focused developers, ML engineers

Repository: https://github.com/hodgesmr/calgacus-mlx · Python · BSD-3-Clause · 2 stars

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