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Related papers: Online LLM watermark detection via e-processes

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Recent progress in large language models enables the creation of realistic machine-generated content. Watermarking is a promising approach to distinguish machine-generated text from human text, embedding statistical signals in the output…

Cryptography and Security · Computer Science 2026-02-25 Patrick Chao , Yan Sun , Edgar Dobriban , Hamed Hassani

The rapid growth of Large Language Models (LLMs) has highlighted the pressing need for reliable mechanisms to verify content ownership and ensure traceability. Watermarking offers a promising path forward, but it remains limited by privacy…

Cryptography and Security · Computer Science 2026-01-21 Thomas Fargues , Ye Dong , Tianwei Zhang , Jin-Song Dong

A recent watermarking scheme for language models achieves distortion-free embedding and robustness to edit-distance attacks. However, it suffers from limited generation diversity and high detection overhead. In parallel, recent research has…

Cryptography and Security · Computer Science 2025-12-12 Yangkun Wang , Jingbo Shang

Text watermarks for large language models (LLMs) have been commonly used to identify the origins of machine-generated content, which is promising for assessing liability when combating deepfake or harmful content. While existing…

Cryptography and Security · Computer Science 2024-10-30 Tong Zhou , Xuandong Zhao , Xiaolin Xu , Shaolei Ren

Methods for watermarking large language models have been proposed that distinguish AI-generated text from human-generated text by slightly altering the model output distribution, but they also distort the quality of the text, exposing the…

Computation and Language · Computer Science 2024-02-27 Massieh Kordi Boroujeny , Ya Jiang , Kai Zeng , Brian Mark

Large language models (LLMs) are increasingly integrated into academic workflows, with many conferences and journals permitting their use for tasks such as language refinement and literature summarization. However, their use in peer review…

Cryptography and Security · Computer Science 2025-11-13 Alexander Nemecek , Yuzhou Jiang , Erman Ayday

Large Language Models (LLMs) can be misused to spread unwanted content at scale. Content watermarking deters misuse by hiding messages in content, enabling its detection using a secret watermarking key. Robustness is a core security…

Cryptography and Security · Computer Science 2025-05-22 Abdulrahman Diaa , Toluwani Aremu , Nils Lukas

Logit-based LLM watermarking traces and verifies AI-generated content by maintaining green and red token lists and increasing the likelihood of green tokens during generation. However, it fails in low-entropy scenarios, where predictable…

Computation and Language · Computer Science 2025-05-21 Tianle Gu , Zongqi Wang , Kexin Huang , Yuanqi Yao , Xiangliang Zhang , Yujiu Yang , Xiuying Chen

While watermarking serves as a critical mechanism for LLM provenance, existing secret-key schemes tightly couple detection with injection, requiring access to keys or provider-side scheme-specific detectors for verification. This dependency…

Cryptography and Security · Computer Science 2026-04-14 Zhuoshang Wang , Yubing Ren , Yanan Cao , Fang Fang , Xiaoxue Li , Li Guo

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

With the rise of large language models (LLMs) and concerns about potential misuse, watermarks for generative LLMs have recently attracted much attention. An important aspect of such watermarks is the trade-off between their identifiability…

Cryptography and Security · Computer Science 2024-01-01 Bram Wouters

While watermarks for closed LLMs have matured and have been included in large-scale deployments, these methods are not applicable to open-source models, which allow users full control over the decoding process. This setting is understudied…

Cryptography and Security · Computer Science 2025-02-18 Thibaud Gloaguen , Nikola Jovanović , Robin Staab , Martin Vechev

Large language model (LLM) watermarking has emerged as a promising approach for detecting and attributing AI-generated text, yet its robustness to black-box spoofing remains insufficiently evaluated. Existing evaluation methods often demand…

Cryptography and Security · Computer Science 2026-04-14 Hanbo Huang , Xuan Gong , Yiran Zhang , Hao Zheng , Shiyu Liang

As large language models (LLM) are increasingly used for text generation tasks, it is critical to audit their usages, govern their applications, and mitigate their potential harms. Existing watermark techniques are shown effective in…

Machine Learning · Computer Science 2024-08-09 Chaoyi Zhu , Jeroen Galjaard , Pin-Yu Chen , Lydia Y. Chen

Large Language Model (LLM) watermarking is crucial for establishing the provenance of machine-generated text, but most existing methods rely on a centralized trust model. This model forces users to reveal potentially sensitive text to a…

Cryptography and Security · Computer Science 2026-05-01 Xiaokun Luan , Yihao Zhang , Pengcheng Su , Feiran Lei , Meng Sun

Watermarking involves implanting an imperceptible signal into generated text that can later be detected via statistical tests. A prominent family of watermarking strategies for LLMs embeds this signal by upsampling a (pseudorandomly-chosen)…

Computation and Language · Computer Science 2024-10-22 Anirudh Ajith , Sameer Singh , Danish Pruthi

Most LLM fingerprinting methods teach the model to respond to a few fixed queries with predefined atypical responses (keys). This memorization often does not survive common deployment steps such as finetuning or quantization, and such keys…

Cryptography and Security · Computer Science 2026-02-20 Thibaud Gloaguen , Robin Staab , Nikola Jovanović , Martin Vechev

Copyright protection for large language models is of critical importance, given their substantial development costs, proprietary value, and potential for misuse. Existing surveys have predominantly focused on techniques for tracing…

Cryptography and Security · Computer Science 2026-04-08 Zhenhua Xu , Xubin Yue , Zhebo Wang , Haobo Zhang , Qichen Liu , Xixiang Zhao , Jingxuan Zhang , Wenjun Zeng , Wengpeng Xing , Dezhang Kong , Changting Lin , Meng Han

This paper presents a survey and taxonomy of LLM fingerprinting and watermarking for identity, ownership verification, provenance, and generated-content attribution. Large language models (LLMs) require substantial investments in data,…

Cryptography and Security · Computer Science 2026-05-29 Bing Liu , Shunping Wang , Yufan Zhu , Xinyi Yu , Jing Huang , Linkang Du , Hongbin Pei , Wei Luo

Large pre-trained language models (PLMs) have proven to be a crucial component of modern natural language processing systems. PLMs typically need to be fine-tuned on task-specific downstream datasets, which makes it hard to claim the…

Computation and Language · Computer Science 2023-02-13 Chenxi Gu , Chengsong Huang , Xiaoqing Zheng , Kai-Wei Chang , Cho-Jui Hsieh