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The theory of quantum cryptography aims to guarantee unconditional information-theoretic security against an omnipotent eavesdropper. In many practical scenarios, however, the assumption of an all-powerful adversary is excessive and can be…

Data at the physical layer transmits via media such as copper cable, fiber optic, or wireless. Physical attack vectors exist that challenge data confidentiality and availability. Protocols and encryption standards help obfuscate but often…

Cryptography and Security · Computer Science 2026-01-27 Alon Hillel-Tuch

Modern cryptography is essential to communication and information security for performing all kinds of security actions, such as encryption, authentication, and signature. However, the exposure possibility of keys poses a great threat to…

Cryptography and Security · Computer Science 2020-10-27 Longjiang Li , Bingchuan Ma , Jianjun Yang , Yonggang Li , Yuming Mao

Protecting the intellectual property of large language models requires robust ownership verification. Conventional backdoor fingerprinting, however, is flawed by a stealth-robustness paradox: to be robust, these methods force models to…

Cryptography and Security · Computer Science 2026-01-22 Zhenhua Xu , Xiaoning Tian , Wenjun Zeng , Wenpeng Xing , Tianliang Lu , Gaolei Li , Chaochao Chen , Meng Han

Cooperative jamming is an approach that has been recently proposed for improving physical layer based security for wireless networks in the presence of an eavesdropper. While the source transmits its message to its destination, a relay node…

Information Theory · Computer Science 2009-07-30 Lun Dong , Zhu Han , Athina P. Petropulu , H. Vincent Poor

WiFi communication should be possible only between devices inside the same network. However, we find that all existing WiFi devices send back acknowledgments (ACK) to even fake packets received from unauthorized WiFi devices outside of…

Networking and Internet Architecture · Computer Science 2023-03-28 Ali Abedi , Haofan Lu , Alex Chen , Charlie Liu , Omid Abari

The looming electromagnetic spectrum crisis -- due to the fact of the explosive growth in the increasing user data demand -- has encouraged the emergence of new wireless technologies. This paper surveys the state-of-the-art leading and…

Signal Processing · Electrical Eng. & Systems 2023-03-20 Victor Monzon Baeza , Rafael Arellano Garcia

Industry 4.0 embodies one of the significant technological changes of this decade. Cyber-physical systems and the Internet Of Things are two central technologies in this change that embed or connect with sensors and actuators and interact…

Cryptography and Security · Computer Science 2021-09-21 Florian Hofer , Barbara Russo

In this paper, we consider the problem of secret key generation for multiple parties. Multi-user networks usually require a trusted party to efficiently distribute keys to the legitimate users and this process is a weakness against…

Cryptography and Security · Computer Science 2022-08-30 Ufuk Altun , Semiha T. Basaran , Gunes K. Kurt , Enver Ozdemir

Radio frequency fingerprint identification (RFFI) is becoming increasingly popular, especially in applications with constrained power, such as the Internet of Things (IoT). Due to subtle manufacturing variations, wireless devices have…

Signal Processing · Electrical Eng. & Systems 2024-10-11 Lu Yang , Seyit Camtepe , Yansong Gao , Vicky Liu , Dhammika Jayalath

Wireless radio channels are known to contain information about the surrounding propagation environment, which can be extracted using established wireless sensing methods. Thus, today's ubiquitous wireless devices are attractive targets for…

Cryptography and Security · Computer Science 2022-04-08 Paul Staat , Simon Mulzer , Stefan Roth , Veelasha Moonsamy , Markus Heinrichs , Rainer Kronberger , Aydin Sezgin , Christof Paar

This paper explores WireGuard as a lightweight alternative to IPsec for securing the user plane as well as the control plane in an industrial Open RAN deployment at the Adtran Terafactory in Meiningen. We focus on a realistic scenario where…

Cryptography and Security · Computer Science 2025-12-12 Hubert Djuitcheu , Andrew Sergeev , Khurshid Alam , Danny Santhosh , Achim Autenrieth , Jochen Seitz

Camouflaging gate techniques are typically used in hardware security to prevent reverse engineering. Layout level camouflaging by adding dummy contacts ensures some level of protection against extracting the correct netlist. Threshold…

Liquid crystal (LC) technology provides a low-power and scalable approach to implement a reconfigurable intelligent surface (RIS). However, the LC-based RIS's phase-shift response is inherently frequency-dependent, which can lead to…

Signal Processing · Electrical Eng. & Systems 2025-08-07 Mohamadreza Delbari , Qikai Zhou , Robin Neuder , Alejandro Jiménez-Sáez , Vahid Jamali

Federated learning (FL) enables collaborative training across organizational silos without sharing raw data, making it attractive for privacy-sensitive applications. With the rapid adoption of large language models (LLMs), federated…

Cryptography and Security · Computer Science 2026-04-17 Mohamed Shaaban , Mohamed Elmahallawy

The advancement in wireless communication technologies is becoming more demanding and pervasive. One of the fundamental parameters that limit the efficiency of the network are the security challenges. The communication network is vulnerable…

Cryptography and Security · Computer Science 2022-10-10 Misbah Shafi , Rakesh Kumar Jha , Sanjeev Jain

The Design of new wireless communication systems for industrial applications, e.g. control applications, is currently a hot research topic, as they deal as a key enabler for more flexible solutions at a lower cost compared to systems based…

Networking and Internet Architecture · Computer Science 2018-07-31 Andreas Weinand , Michael Karrenbauer , Hans D. Schotten

Widespread attention is recently paid upon RFID system structure considering its ease of deployment over an extensive range of applications. Due to its several advantages, many technical articles are published to improve its capabilities…

Cryptography and Security · Computer Science 2012-02-10 Hoda Jannati , Abolfazl Falahati

In its current state, the Internet does not provide end users with transparency and control regarding on-path forwarding devices. In particular, the lack of network device information reduces the trustworthiness of the forwarding path and…

Networking and Internet Architecture · Computer Science 2023-10-12 Cyrill Krähenbühl , Marc Wyss , David Basin , Vincent Lenders , Adrian Perrig , Martin Strohmeier

Radio frequency fingerprint identification (RFFI) distinguishes wireless devices by the small variations in their analog circuits, avoiding heavy cryptographic authentication. While deep learning on spectrograms improves accuracy, models…

Cryptography and Security · Computer Science 2025-09-22 Aarushi Mahajan , Wayne Burleson