# Permutation Encoding for Text Steganography: A Short Tutorial

arXiv: https://arxiv.org/abs/2104.03881 · HTML: https://mlsanity.com/paper/2104.03881/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 8 Apr 2021.

## Built on by (most cited first, 1 of 1)

- [Permutation-Based Stegomalware in Large Language Models: Threats and Countermeasures](https://mlsanity.com/paper/2609.16193/) (2026)

## Abstract (arXiv)

We explore a method of encoding secret messages using factoradic numbering of permuted lists of text or numeric elements. Encoding and decoding methods are provided, with code, and key aspects of the correctness of the methods are formally proven. The method of encoding is simple and provides a working example of using textual and numeric lists as a stenagographic channel. Given the ubiquity of lists, such channels are already present but are often unused.