Paper 2025/661
An LLM Framework For Cryptography Over Chat Channels
, Norwegian University of Science and Technology, University of OsloAbstract
Recent advancements in Large Language Models (LLMs) have transformed communication, yet their role in secure messaging remains underexplored, especially in surveillance-heavy environments. At the same time, many governments all over the world are proposing legislation to detect, backdoor, or even ban encrypted communication. That emphasizes the need for alternative ways to communicate securely and covertly over open channels. We propose a novel cryptographic embedding framework that enables covert Public Key or Symmetric Key encrypted communication over public chat channels with human-like produced texts. Some unique properties of our framework are: 1. It is LLM agnostic, i.e., it allows participants to use different local LLM models independently; 2. It is pre- or post-quantum agnostic; 3. It ensures indistinguishability from human-like chat-produced texts. Thus, it offers a viable alternative where traditional encryption is detectable and restricted.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- LLMsTransformersSteganographyWatermarkingCryptography
- Contact author(s)
-
danilog @ ntnu no
mayankr @ ifi uio no
sonu k jha @ ntnu no - History
- 2025-04-13: approved
- 2025-04-11: received
- See all versions
- Short URL
- https://ia.cr/2025/661
- License
-
CC BY-NC-ND
BibTeX
@misc{cryptoeprint:2025/661,
author = {Danilo Gligoroski and Mayank Raikwar and Sonu Kumar Jha},
title = {An {LLM} Framework For Cryptography Over Chat Channels},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/661},
year = {2025},
url = {https://eprint.iacr.org/2025/661}
}
