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Watermarking has emerged as a promising solution for tracing and authenticating text generated by large language models (LLMs). A common approach to LLM watermarking is to construct a green/red token list and assign higher or lower…

Cryptography and Security · Computer Science 2025-10-27 Li An , Yujian Liu , Yepeng Liu , Yuheng Bu , Yang Zhang , Shiyu Chang

The rapid development of Large Language Models (LLMs) has intensified concerns about content traceability and potential misuse. Existing watermarking schemes for sampled text often face trade-offs between maintaining text quality and…

Computation and Language · Computer Science 2025-04-17 Shizhan Cai , Liang Ding , Dacheng Tao

With the rapid advancement and extensive application of artificial intelligence technology, large language models (LLMs) are extensively used to enhance production, creativity, learning, and work efficiency across various domains. However,…

Cryptography and Security · Computer Science 2024-09-04 Yuqing Liang , Jiancheng Xiao , Wensheng Gan , Philip S. Yu

In the rapidly evolving domain of artificial intelligence, safeguarding the intellectual property of Large Language Models (LLMs) is increasingly crucial. Current watermarking techniques against model extraction attacks, which rely on…

Cryptography and Security · Computer Science 2024-05-03 Minhao Bai , Kaiyi Pang , Yongfeng Huang

Large Language Models (LLMs) excel in various applications, including text generation and complex tasks. However, the misuse of LLMs raises concerns about the authenticity and ethical implications of the content they produce, such as…

Cryptography and Security · Computer Science 2024-12-02 Zesen Liu , Tianshuo Cong , Xinlei He , Qi Li

Watermarking acts as a critical safeguard in text generated by Large Language Models (LLMs). By embedding identifiable signals into model outputs, watermarking enables reliable attribution and enhances the security of machine-generated…

Computation and Language · Computer Science 2026-05-29 Yukang Lin , Jiahao Shao , Shuoran Jiang , Wentao Zhu , Bingjie Lu , Xiangping Wu , Joanna Siebert , Qingcai Chen

Text watermarks in large language models (LLMs) are increasingly used to detect synthetic text, mitigating misuse cases like fake news and academic dishonesty. While existing watermarking detection techniques primarily focus on classifying…

Computation and Language · Computer Science 2025-06-13 Xuandong Zhao , Chenwen Liao , Yu-Xiang Wang , Lei Li

The capabilities of large language models have grown significantly in recent years and so too have concerns about their misuse. It is important to be able to distinguish machine-generated text from human-authored content. Prior works have…

Cryptography and Security · Computer Science 2024-10-15 Julien Piet , Chawin Sitawarin , Vivian Fang , Norman Mu , David Wagner

Text watermarking for large language models (LLMs) enables model owners to verify text origin and protect intellectual property. While watermarking methods for closed-source LLMs are relatively mature, extending them to open-source models…

Cryptography and Security · Computer Science 2025-10-29 Jiaqi Xue , Yifei Zhao , Mansour Al Ghanim , Shangqian Gao , Ruimin Sun , Qian Lou , Mengxin Zheng

Generation-time text watermarking embeds statistical signals into text for traceability of AI-generated content. We explore *post-hoc watermarking* where an LLM rewrites existing text while applying generation-time watermarking, to protect…

We consider the emerging problem of identifying the presence and use of watermarking schemes in widely used, publicly hosted, closed source large language models (LLMs). We introduce a suite of baseline algorithms for identifying watermarks…

Machine Learning · Computer Science 2023-05-31 Leonard Tang , Gavin Uberti , Tom Shlomi

As large language models (LLMs) grow more powerful, concerns over copyright infringement of LLM-generated texts have intensified. LLM watermarking has been proposed to trace unauthorized redistribution or resale of generated content by…

Cryptography and Security · Computer Science 2025-08-05 Qihao Lin , Chen Tang , Lan zhang , Junyang zhang , Xiangyang Li

The Large Language Model (LLM) watermark is a newly emerging technique that shows promise in addressing concerns surrounding LLM copyright, monitoring AI-generated text, and preventing its misuse. The LLM watermark scheme commonly includes…

Cryptography and Security · Computer Science 2024-05-31 Zhaoxi Zhang , Xiaomei Zhang , Yanjun Zhang , Leo Yu Zhang , Chao Chen , Shengshan Hu , Asif Gill , Shirui Pan

Watermarking is broadly utilized to protect ownership of shared data while preserving data utility. However, existing watermarking methods for tabular datasets fall short on the desired properties (detectability, non-intrusiveness, and…

Cryptography and Security · Computer Science 2024-06-24 Yihao Zheng , Haocheng Xia , Junyuan Pang , Jinfei Liu , Kui Ren , Lingyang Chu , Yang Cao , Li Xiong

With the rapid growth of Large Language Models (LLMs), safeguarding textual content against unauthorized use is crucial. Watermarking offers a vital solution, protecting both - LLM-generated and plain text sources. This paper presents a…

Computation and Language · Computer Science 2025-07-08 Harsh Nishant Lalai , Aashish Anantha Ramakrishnan , Raj Sanjay Shah , Dongwon Lee

Large Language Models (LLMs) have demonstrated remarkable capabilities, but their training requires extensive data and computational resources, rendering them valuable digital assets. Therefore, it is essential to watermark LLMs to protect…

Cryptography and Security · Computer Science 2025-10-21 Shuai Li , Kejiang Chen , Jun Jiang , Jie Zhang , Qiyi Yao , Kai Zeng , Weiming Zhang , Nenghai Yu

As Large Language Models (LLMs) become increasingly sophisticated, they raise significant security concerns, including the creation of fake news and academic misuse. Most detectors for identifying model-generated text are limited by their…

Cryptography and Security · Computer Science 2024-10-10 Zhenyu Xu , Victor S. Sheng

Text watermarking for Large Language Models (LLMs) has made significant progress in detecting LLM outputs and preventing misuse. Current watermarking techniques offer high detectability, minimal impact on text quality, and robustness to…

Cryptography and Security · Computer Science 2025-01-29 Aiwei Liu , Sheng Guan , Yiming Liu , Leyi Pan , Yifei Zhang , Liancheng Fang , Lijie Wen , Philip S. Yu , Xuming Hu

The rapid advancement of customized Large Language Models (LLMs) offers considerable convenience. However, it also intensifies concerns regarding the protection of copyright/confidential information. With the extensive adoption of private…

Cryptography and Security · Computer Science 2024-12-18 Yuehan Zhang , Peizhuo Lv , Yinpeng Liu , Yongqiang Ma , Wei Lu , Xiaofeng Wang , Xiaozhong Liu , Jiawei Liu

Benchmark contamination poses a significant challenge to the reliability of Large Language Models (LLMs) evaluations, as it is difficult to assert whether a model has been trained on a test set. We introduce a solution to this problem by…

Cryptography and Security · Computer Science 2025-07-22 Tom Sander , Pierre Fernandez , Saeed Mahloujifar , Alain Durmus , Chuan Guo