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Deep Neural Networks (DNNs) have gained considerable traction in recent years due to the unparalleled results they gathered. However, the cost behind training such sophisticated models is resource intensive, resulting in many to consider…

Machine Learning · Computer Science 2025-05-12 Anh Tu Ngo , Chuan Song Heng , Nandish Chattopadhyay , Anupam Chattopadhyay

In password-based authentication systems, the username fields are essentially unprotected, while the password fields are susceptible to attacks. In this article, we shift our research focus from traditional authentication paradigm to the…

Cryptography and Security · Computer Science 2026-05-06 Suyun Borjigin

In this paper we show that cryptographic backdoors in a neural network (NN) can be highly effective in two directions, namely mounting the attacks as well as in presenting the defenses as well. On the attack side, a carefully planted…

Cryptography and Security · Computer Science 2025-09-26 Anh Tu Ngo , Anupam Chattopadhyay , Subhamoy Maitra

Federated learning models are collaboratively developed upon valuable training data owned by multiple parties. During the development and deployment of federated models, they are exposed to risks including illegal copying, re-distribution,…

Machine Learning · Computer Science 2022-08-25 Bowen Li , Lixin Fan , Hanlin Gu , Jie Li , Qiang Yang

Deep learning-based watermarking has emerged as a promising solution for robust image authentication and protection. However, existing models are limited by low embedding capacity and vulnerability to bit-level errors, making them…

Cryptography and Security · Computer Science 2025-07-08 Hyunwook Choi , Sangyun Won , Daeyeon Hwang , Junhyeok Choi

In this thesis, a multimodal biometric, secure encrypted data and encrypted biometric encoded into the QR code-based biometric-passport authentication method is proposed for national security applications. Firstly, using the Extended…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Ziaul Haque Choudhury

Deep convolutional neural networks have made outstanding contributions in many fields such as computer vision in the past few years and many researchers published well-trained network for downloading. But recent studies have shown serious…

Cryptography and Security · Computer Science 2021-04-12 Xiquan Guan , Huamin Feng , Weiming Zhang , Hang Zhou , Jie Zhang , Nenghai Yu

In the recent years, pixel-based perceptual algorithms have been successfully applied for privacy-preserving deep learning (DL) based applications. However, their security has been broken in subsequent works by demonstrating a…

Cryptography and Security · Computer Science 2022-04-08 Ijaz Ahmad , Seokjoo Shin

Protecting the copyright of user-generated AI images is an emerging challenge as AIGC becomes pervasive in creative workflows. Existing watermarking methods (1) remain vulnerable to real-world adversarial threats, often forced to trade off…

Cryptography and Security · Computer Science 2026-01-13 Qingyu Liu , Yitao Zhang , Zhongjie Ba , Chao Shuai , Peng Cheng , Tianhang Zheng , Zhibo Wang

Recent years have witnessed wide application of hashing for large-scale image retrieval. However, most existing hashing methods are based on hand-crafted features which might not be optimally compatible with the hashing procedure. Recently,…

Machine Learning · Computer Science 2016-04-22 Wu-Jun Li , Sheng Wang , Wang-Cheng Kang

Watermarking has become a plausible candidate for ownership verification and intellectual property protection of deep neural networks. Regarding image classification neural networks, current watermarking schemes uniformly resort to backdoor…

Cryptography and Security · Computer Science 2022-04-12 Fangqi Li , Shilin Wang

Deep neural networks (DNN) have achieved remarkable performance in various fields. However, training a DNN model from scratch requires a lot of computing resources and training data. It is difficult for most individual users to obtain such…

Multimedia · Computer Science 2022-07-05 Haoqi Wang , Mingfu Xue , Shichang Sun , Yushu Zhang , Jian Wang , Weiqiang Liu

Graph Neural Networks (GNNs) have become invaluable intellectual property in graph-based machine learning. However, their vulnerability to model stealing attacks when deployed within Machine Learning as a Service (MLaaS) necessitates robust…

Cryptography and Security · Computer Science 2025-01-14 Venkata Sai Pranav Bachina , Ankit Gangwal , Aaryan Ajay Sharma , Charu Sharma

Recently, how to protect the Intellectual Property (IP) of deep neural networks (DNN) becomes a major concern for the AI industry. To combat potential model piracy, recent works explore various watermarking strategies to embed secret…

Cryptography and Security · Computer Science 2022-05-20 Yifan Yan , Xudong Pan , Yining Wang , Mi Zhang , Min Yang

With the increasing prevalence of Machine Learning as a Service (MLaaS) platforms, there is a growing focus on deep neural network (DNN) watermarking techniques. These methods are used to facilitate the verification of ownership for a…

Cryptography and Security · Computer Science 2024-07-19 Yuxuan Li , Sarthak Kumar Maharana , Yunhui Guo

Apple recently revealed its deep perceptual hashing system NeuralHash to detect child sexual abuse material (CSAM) on user devices before files are uploaded to its iCloud service. Public criticism quickly arose regarding the protection of…

Machine Learning · Computer Science 2024-07-17 Lukas Struppek , Dominik Hintersdorf , Daniel Neider , Kristian Kersting

Deep Neural Networks have created a paradigm shift in our ability to comprehend raw data in various important fields ranging from computer vision and natural language processing to intelligence warfare and healthcare. While DNNs are…

Multimedia · Computer Science 2019-04-02 Huili Chen , Bita Darvish Rouhani , Farinaz Koushanfar

In this paper, we propose a novel method for protecting convolutional neural network (CNN) models with a secret key set so that unauthorized users without the correct key set cannot access trained models. The method enables us to protect…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 AprilPyone MaungMaung , Hitoshi Kiya

Recently, deep learning as a service (DLaaS) has emerged as a promising way to facilitate the employment of deep neural networks (DNNs) for various purposes. However, using DLaaS also causes potential privacy leakage from both clients and…

Cryptography and Security · Computer Science 2020-11-13 Peichen Xie , Bingzhe Wu , Guangyu Sun

Graph Neural Networks (GNNs) are increasingly deployed in real-world applications, making ownership verification critical to protect their intellectual property against model theft. Fingerprinting and black-box watermarking are two main…

Cryptography and Security · Computer Science 2025-12-25 Tingzhi Li , Xuefeng Liu , Jing Lei , Xingang Zhang