Zero-shot Generative Linguistic Steganography

Ke Lin, Yiyang Luo, Zijian Zhang, Luo Ping


Abstract
Generative linguistic steganography attempts to hide secret messages into covertext. Previous studies have generally focused on the statistical differences between the covertext and stegotext, however, ill-formed stegotext can readily be identified by humans. In this paper, we propose a novel zero-shot approach based on in-context learning for linguistic steganography to achieve better perceptual and statistical imperceptibility. We also design several new metrics and reproducible language evaluations to measure the imperceptibility of the stegotext. Our experimental results indicate that our method produces 1.926× more innocent and intelligible stegotext than any other method.
Anthology ID:
2024.naacl-long.289
Volume:
Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers)
Month:
June
Year:
2024
Address:
Mexico City, Mexico
Editors:
Kevin Duh, Helena Gomez, Steven Bethard
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5168–5182
Language:
URL:
https://aclanthology.org/2024.naacl-long.289
DOI:
Bibkey:
Cite (ACL):
Ke Lin, Yiyang Luo, Zijian Zhang, and Luo Ping. 2024. Zero-shot Generative Linguistic Steganography. In Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), pages 5168–5182, Mexico City, Mexico. Association for Computational Linguistics.
Cite (Informal):
Zero-shot Generative Linguistic Steganography (Lin et al., NAACL 2024)
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PDF:
https://aclanthology.org/2024.naacl-long.289.pdf
Copyright:
 2024.naacl-long.289.copyright.pdf