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In the present-day scenario, Large Language Models (LLMs) are establishing their presence as powerful instruments permeating various sectors of society. While their utility offers valuable support to individuals, there are multiple concerns…

Computation and Language · Computer Science 2025-07-01 Badr Youbi Idrissi , Monica Millunzi , Amelia Sorrenti , Lorenzo Baraldi , Daryna Dementieva

The widespread adoption of large language models (LLMs) necessitates reliable methods to detect LLM-generated text. We introduce SimMark, a robust sentence-level watermarking algorithm that makes LLMs' outputs traceable without requiring…

Computation and Language · Computer Science 2025-09-12 Amirhossein Dabiriaghdam , Lele Wang

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 outstanding performance, making them valuable digital assets with significant commercial potential. Unfortunately, the LLM and its API are susceptible to intellectual property theft.…

Cryptography and Security · Computer Science 2024-07-25 Shuai Li , Kejiang Chen , Kunsheng Tang , Jie Zhang , Weiming Zhang , Nenghai Yu , Kai Zeng

Protecting intellectual property (IP) of text such as articles and code is increasingly important, especially as sophisticated attacks become possible, such as paraphrasing by large language models (LLMs) or even unauthorized training of…

Cryptography and Security · Computer Science 2024-10-30 Gregory Kang Ruey Lau , Xinyuan Niu , Hieu Dao , Jiangwei Chen , Chuan-Sheng Foo , Bryan Kian Hsiang Low

The rapid development of LLMs has raised concerns about their potential misuse, leading to various watermarking schemes that typically offer high detectability. However, existing watermarking techniques often face trade-off between…

Cryptography and Security · Computer Science 2025-10-21 Chenrui Wang , Junyi Shu , Billy Chiu , Yu Li , Saleh Alharbi , Min Zhang , Jing Li

The development of large language models (LLMs) has raised concerns about potential misuse. One practical solution is to embed a watermark in the text, allowing ownership verification through watermark extraction. Existing methods primarily…

Cryptography and Security · Computer Science 2025-03-04 Yuhang Cai , Yaofei Wang , Donghui Hu , Chen Gu

Watermarking is a technical means to dissuade malfeasant usage of Large Language Models. This paper proposes a novel watermarking scheme, so-called WaterMax, that enjoys high detectability while sustaining the quality of the generated text…

Cryptography and Security · Computer Science 2024-10-21 Eva Giboulot , Teddy Furon

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

LLM watermarks stand out as a promising way to attribute ownership of LLM-generated text. One threat to watermark credibility comes from spoofing attacks, where an unauthorized third party forges the watermark, enabling it to falsely…

Cryptography and Security · Computer Science 2025-05-23 Thibaud Gloaguen , Nikola Jovanović , Robin Staab , Martin Vechev

Watermarking has emerged as a crucial method to distinguish AI-generated text from human-created text. Current watermarking approaches often lack formal optimality guarantees or address the scheme and detector design separately. In this…

Cryptography and Security · Computer Science 2025-10-28 Haiyun He , Yepeng Liu , Ziqiao Wang , Yongyi Mao , Yuheng Bu

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

Large Language Models (LLMs) have demonstrated remarkable capabilities of generating texts resembling human language. However, they can be misused by criminals to create deceptive content, such as fake news and phishing emails, which raises…

Cryptography and Security · Computer Science 2025-01-29 Wenjie Qu , Wengrui Zheng , Tianyang Tao , Dong Yin , Yanze Jiang , Zhihua Tian , Wei Zou , Jinyuan Jia , Jiaheng Zhang

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

Deep neural networks are valuable assets considering their commercial benefits and huge demands for costly annotation and computation resources. To protect the copyright of DNNs, backdoor-based ownership verification becomes popular…

Cryptography and Security · Computer Science 2023-09-12 Guanhao Gan , Yiming Li , Dongxian Wu , Shu-Tao Xia

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

The rise of LLMs has increased concerns over source tracing and copyright protection for AIGC, highlighting the need for advanced detection technologies. Passive detection methods usually face high false positives, while active watermarking…

Cryptography and Security · Computer Science 2026-04-03 Kahim Wong , Jicheng Zhou , Jiantao Zhou , Yain-Whar Si

With the rapid development of cloud-based services, large language models have become increasingly accessible through various web platforms. However, this accessibility has also led to growing risks of model abuse. LLM watermarking has…

Cryptography and Security · Computer Science 2026-04-28 Hao Li , Yubing Ren , Yanan Cao , Yingjie Li , Fang Fang , Shi Wang , Li Guo

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

As LLMs become commonplace, machine-generated text has the potential to flood the internet with spam, social media bots, and valueless content. Watermarking is a simple and effective strategy for mitigating such harms by enabling the…