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Proprietary large language models (LLMs) face risks of intellectual property (IP) violation, as adversaries can replicate an LLM by collecting input-output pairs to train a surrogate model, causing financial setbacks. Watermarks offer a…

Cryptography and Security · Computer Science 2026-05-25 Kieu Dang , Phung Lai , NhatHai Phan , Yelong Shen , Ruoming Jin

Semantic-level watermarking (SWM) for large language models (LLMs) enhances watermarking robustness against text modifications and paraphrasing attacks by treating the sentence as the fundamental unit. However, existing methods still lack…

Cryptography and Security · Computer Science 2026-03-03 Jiahao Huo , Shuliang Liu , Bin Wang , Junyan Zhang , Yibo Yan , Aiwei Liu , Xuming Hu , Mingxun Zhou

The indistinguishability of large language model (LLM) output from human-authored content poses significant challenges, raising concerns about potential misuse of AI-generated text and its influence on future model training. Watermarking…

Cryptography and Security · Computer Science 2026-04-16 Alexander Nemecek , Yuzhou Jiang , Erman Ayday

Large Language Models (LLMs) are increasingly integrated into diverse industries, posing substantial security risks due to unauthorized replication and misuse. To mitigate these concerns, robust identification mechanisms are widely…

Cryptography and Security · Computer Science 2024-07-25 Xuhong Wang , Haoyu Jiang , Yi Yu , Jingru Yu , Yilun Lin , Ping Yi , Yingchun Wang , Yu Qiao , Li Li , Fei-Yue Wang

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

Text watermarking aims to subtly embed statistical signals into text by controlling the Large Language Model (LLM)'s sampling process, enabling watermark detectors to verify that the output was generated by the specified model. The…

Machine Learning · Computer Science 2025-05-13 Yixin Cheng , Hongcheng Guo , Yangming Li , Leonid Sigal

Watermark algorithms for large language models (LLMs) have achieved extremely high accuracy in detecting text generated by LLMs. Such algorithms typically involve adding extra watermark logits to the LLM's logits at each generation step.…

Cryptography and Security · Computer Science 2024-05-21 Aiwei Liu , Leyi Pan , Xuming Hu , Shiao Meng , Lijie Wen

The widely adopted and powerful generative large language models (LLMs) have raised concerns about intellectual property rights violations and the spread of machine-generated misinformation. Watermarking serves as a promising approch to…

Cryptography and Security · Computer Science 2024-10-28 Ruisi Zhang , Farinaz Koushanfar

Watermarking technology has gained significant attention due to the increasing importance of intellectual property (IP) rights, particularly with the growing deployment of large language models (LLMs) on billions resource-constrained edge…

Cryptography and Security · Computer Science 2025-07-14 Qingxiao Guo , Xinjie Zhu , Yilong Ma , Hui Jin , Yunhao Wang , Weifeng Zhang , Xiaobing Guo

Large language models (LLMs) have demonstrated powerful capabilities in both text understanding and generation. Companies have begun to offer Embedding as a Service (EaaS) based on these LLMs, which can benefit various natural language…

Computation and Language · Computer Science 2023-06-05 Wenjun Peng , Jingwei Yi , Fangzhao Wu , Shangxi Wu , Bin Zhu , Lingjuan Lyu , Binxing Jiao , Tong Xu , Guangzhong Sun , Xing Xie

Watermarking algorithms for large language models (LLMs) have attained high accuracy in detecting LLM-generated text. However, existing methods primarily focus on distinguishing fully watermarked text from non-watermarked text, overlooking…

Computation and Language · Computer Science 2025-02-25 Leyi Pan , Aiwei Liu , Yijian Lu , Zitian Gao , Yichen Di , Shiyu Huang , Lijie Wen , Irwin King , Philip S. Yu

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

Multi-bit watermarking (MW) has been designed to enhance resistance against watermarking attacks, such as signal processing operations and geometric distortions. Various benchmark tools exist to assess this robustness through simulated…

Multimedia · Computer Science 2025-05-06 Seung-Hun Nam , Jihyeon Kang , Daesik Kim , Namhyuk Ahn , Wonhyuk Ahn

We show the viability of tackling misuses of large language models beyond the identification of machine-generated text. While existing zero-bit watermark methods focus on detection only, some malicious misuses demand tracing the adversary…

Computation and Language · Computer Science 2024-03-21 KiYoon Yoo , Wonhyuk Ahn , Nojun Kwak

Embedding as a Service (EaaS) has become a widely adopted solution, which offers feature extraction capabilities for addressing various downstream tasks in Natural Language Processing (NLP). Prior studies have shown that EaaS can be prone…

Cryptography and Security · Computer Science 2024-06-11 Anudeex Shetty , Yue Teng , Ke He , Qiongkai Xu

Watermarking plays a key role in the provenance and detection of AI-generated content. While existing methods prioritize robustness against real-world distortions (e.g., JPEG compression and noise addition), we reveal a fundamental…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Zhongjie Ba , Yitao Zhang , Peng Cheng , Bin Gong , Xinyu Zhang , Qinglong Wang , Kui Ren

Diffusion large language models (dLLMs) offer faster generation than autoregressive models while maintaining comparable quality, but existing watermarking methods fail on them due to their non-sequential decoding. Unlike autoregressive…

Machine Learning · Computer Science 2025-10-06 Linyu Wu , Linhao Zhong , Wenjie Qu , Yuexin Li , Yue Liu , Shengfang Zhai , Chunhua Shen , Jiaheng Zhang

Watermarking is a principled approach for tracing the provenance of large language model (LLM) outputs, but its deployment in practice is hindered by inference inefficiency. Speculative sampling accelerates inference, with efficiency…

Machine Learning · Computer Science 2026-02-24 Weiqing He , Xiang Li , Li Shen , Weijie Su , Qi Long

We study the problem of watermarking large language models (LLMs) generated text -- one of the most promising approaches for addressing the safety challenges of LLM usage. In this paper, we propose a rigorous theoretical framework to…

Computation and Language · Computer Science 2023-10-16 Xuandong Zhao , Prabhanjan Ananth , Lei Li , Yu-Xiang Wang

Text watermarking algorithms are crucial for protecting the copyright of textual content. Historically, their capabilities and application scenarios were limited. However, recent advancements in large language models (LLMs) have…

Computation and Language · Computer Science 2024-08-12 Aiwei Liu , Leyi Pan , Yijian Lu , Jingjing Li , Xuming Hu , Xi Zhang , Lijie Wen , Irwin King , Hui Xiong , Philip S. Yu