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Several graph theoretic watermark methods have been proposed to encode numbers as graph structures in software watermarking environments. In this paper, we propose an efficient and easily implementable codec system for encoding watermark…

Data Structures and Algorithms · Computer Science 2017-12-25 Maria Chroni , Stavros D. Nikolopoulos , Leonidas Palios

In the domain of software watermarking, we have proposed several graph theoretic watermarking codec systems for encoding watermark numbers $w$ as reducible permutation flow-graphs $F[\pi^*]$ through the use of self-inverting permutations…

Discrete Mathematics · Computer Science 2018-12-31 Anna Mpanti , Stavros D. Nikolopoulos , Leonidas Palios

Software watermarking has received considerable attention and was adopted by the software development community as a technique to prevent or discourage software piracy and copyright infringement. A wide range of software watermarking…

Multimedia · Computer Science 2016-07-18 Anna Mpanti , Stavros D. Nikolopoulos

Software watermarking involves embedding a unique identifier or, equivalently, a watermark value within a software to prove owner's authenticity and thus to prevent or discourage copyright infringement. Towards the embedding process,…

Multimedia · Computer Science 2014-03-27 Ioannis Chionis , Maria Chroni , Stavros D. Nikolopoulos

This work provides to web users copyright protection of their Portable Document Format (PDF) documents by proposing efficient and easily implementable techniques for PDF watermarking; our techniques are based on the ideas of our recently…

Multimedia · Computer Science 2015-01-13 Maria Chroni , Stavros D. Nikolopoulos

Reversible visible watermarking (RVW) is an active copyright protection mechanism. It not only transparently superimposes copyright patterns on specific positions of digital images or video frames to declare the copyright ownership…

Multimedia · Computer Science 2022-01-12 Wenfa Qi , Sirui Guo , Wei Hu

We address the problem of watermarking graph objects, which consists in hiding information within them, to prove their origin. The two existing methods to watermark graphs use subgraph matching or graph isomorphism techniques, which are…

Data Structures and Algorithms · Computer Science 2025-08-05 Jade Garcia Bourrée , Anne-Marie Kermarrec , Erwan Le Merrer , Othmane Safsafi

Graph-structured data is foundational to numerous web applications, and watermarking is crucial for protecting their intellectual property and ensuring data provenance. Existing watermarking methods primarily operate on graph structures or…

Machine Learning · Computer Science 2026-01-22 Jiasen Li , Yanwei Liu , Zhuoyi Shang , Xiaoyan Gu , Weiping Wang

We introduce models and algorithmic foundations for graph watermarking. Our frameworks include security definitions and proofs, as well as characterizations when graph watermarking is algorithmically feasible, in spite of the fact that the…

Multimedia · Computer Science 2016-06-01 David Eppstein , Michael T. Goodrich , Jenny Lam , Nil Mamano , Michael Mitzenmacher , Manuel Torres

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

With the rapid rise of large models, copyright protection for generated image content has become a critical security challenge. Although deep learning watermarking techniques offer an effective solution for digital image copyright…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Shaowu Wu , Liting Zeng , Wei Lu , Xiangyang Luo

Digital image watermarking seeks to protect the digital media information from unauthorized access, where the message is embedded into the digital image and extracted from it, even some noises or distortions are applied under various data…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Hong-Bo Xu , Rong Wang , Jia Wei , Shao-Ping Lu

Recent years have witnessed the prosperous development of Graph Self-supervised Learning (GSSL), which enables to pre-train transferable foundation graph encoders. However, the easy-to-plug-in nature of such encoders makes them vulnerable…

Cryptography and Security · Computer Science 2024-12-10 Xiangyu Zhao , Hanzhou Wu , Xinpeng Zhang

Watermarking is an important copyright protection technology which generally embeds the identity information into the carrier imperceptibly. Then the identity can be extracted to prove the copyright from the watermarked carrier even after…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Sulong Ge , Zhihua Xia , Jianwei Fei , Xingming Sun , Jian Weng

Data leakage from API responses has drawn wide attention. APIs are often not fully regulated, making them easy to abuse. One common solution is to embed watermarks into API responses for traceability. However, existing watermarking methods…

Cryptography and Security · Computer Science 2026-05-22 Yifei Zhou , Xianjun Gu , Xinyu Dai , Ming Liu , Lansheng Han

The rapid growth of transformer-based models increases the concerns about their integrity and ownership insurance. Watermarking addresses this issue by embedding a unique identifier into the model, while preserving its performance. However,…

Cryptography and Security · Computer Science 2024-01-19 Pierre Fernandez , Guillaume Couairon , Teddy Furon , Matthijs Douze

In this paper, we propose a new decoding method called Permute-and-Flip (PF) decoder. It enjoys stability properties similar to the standard sampling decoder, but is provably up to 2x better in its quality-stability tradeoff than sampling…

Computation and Language · Computer Science 2025-03-18 Xuandong Zhao , Lei Li , Yu-Xiang Wang

Internet is one of the most valuable resources for information communication and retrievals. Most multimedia signals today are in digital formats. The digital data can be duplicated and edited with great ease which has led to a need for…

Multimedia · Computer Science 2013-05-01 Rupa Patel , Urmila Shrawankar , V. M Thakare

Diffusion models have made substantial advances in recent years, enabling high-quality image synthesis; however, the widespread dissemination and reuse of their outputs have introduced new challenges in intellectual property protection and…

Cryptography and Security · Computer Science 2026-03-11 Yuqi Qian , Yun Cao , Haocheng Fu , Meiyang Lv , Meineng Zhu

This paper deals with Fountain codes, and especially with their encoding matrices, which are required here to be invertible. A result is stated that an encoding matrix induces a permutation. Also, a result is that encoding matrices form a…

Information Theory · Computer Science 2009-03-27 Mikko Malinen
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