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Quantum computers could break currently used asymmetric cryptographic schemes in a few years using Shor's algorithm. They are used in numerous protocols and applications to secure authenticity as well as key agreement, and quantum-safe…

Cryptography and Security · Computer Science 2023-03-28 Johanna Henrich

WPA2-Personal is widely used to protect Wi-Fi networks against illicit access. While attackers typically use GPUs to speed up the discovery of weak network passwords, attacking random passwords is considered to quickly become infeasible…

Cryptography and Security · Computer Science 2016-05-26 Markus Kammerstetter , Markus Muellner , Daniel Burian , Christian Kudera , Wolfgang Kastner

In this paper we present three attacks on private internal networks behind a NAT and a corresponding new protection mechanism, Internal Network Policy, to mitigate a wide range of attacks that penetrate internal networks behind a NAT. In…

Cryptography and Security · Computer Science 2019-10-04 Yehuda Afek , Anat Bremler-Barr , Alon Noy

The advent of large-scale quantum computers poses a significant threat to contemporary network security protocols, including Wi-Fi Protected Access (WPA)-Enterprise authentication. To mitigate this threat, the adoption of Post-Quantum…

Cryptography and Security · Computer Science 2026-04-30 Lukas Köder , Nils Lohmiller , Phil Schmieder , Bastian Buck , Michael Menth , Tobias Heer

Quantum computers promise exponential speedups for problems in cryptography, chemistry, and optimization. Realizing this promise requires fault tolerance: physical qubits are noisy, so logical qubits must be encoded redundantly across many…

Programming Languages · Computer Science 2026-05-15 Aws Albarghouthi

A central assumption in quantum key distribution (QKD) is that Eve has no knowledge about which rounds will be used for parameter estimation or key distillation. Here we show that this assumption is violated for iterative sifting, a sifting…

Quantum Physics · Physics 2016-05-12 Corsin Pfister , Norbert Lütkenhaus , Stephanie Wehner , Patrick J. Coles

Studies on backdoor attacks in recent years suggest that an adversary can compromise the integrity of a deep neural network (DNN) by manipulating a small set of training samples. Our analysis shows that such manipulation can make the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Nazmul Karim , Abdullah Al Arafat , Adnan Siraj Rakin , Zhishan Guo , Nazanin Rahnavard

In this work the wireless networks security algorithms were analyzed. The fundamentals of the WPA and WPA2 safety algorithms, their weaknesses and ways of attacking WPA and WPA2 Enterprise Wireless Networks are described. Successful attack…

Cryptography and Security · Computer Science 2018-05-18 Tamara Radivilova , Hassan Ali Hassan

Modern password hashing remains a critical defense against credential cracking, yet the transition from theoretically secure algorithms to robust real-world implementations remains fraught with challenges. This paper presents a dual…

Cryptography and Security · Computer Science 2025-10-31 Pascal Tippe , Michael P. Berner

Loss of inputs can be detrimental to the security of quantum position verification (QPV) protocols, as it may allow attackers to not answer on all played rounds, but only on those they perform well on. In this work, we study…

Quantum Physics · Physics 2022-08-11 Rene Allerstorfer , Harry Buhrman , Florian Speelman , Philip Verduyn Lunel

In Wireless Sensor Networks, the sensor nodes are battery powered small devices designed for long battery life. These devices also lack in terms of processing capability and memory. In order to provide high confidentiality to these resource…

Cryptography and Security · Computer Science 2015-09-09 Shujaat Khan , Muhammad Sohail Ibrahim , Kafeel Ahmed Khan , Mansoor Ebrahim

Payment channel networks (PCNs) are a promising solution to address blockchain scalability and throughput challenges, However, the security of PCNs and their vulnerability to attacks are not sufficiently studied. In this paper, we introduce…

Cryptography and Security · Computer Science 2025-06-24 Mohammed Ababneh , Kartick Kolachala , Roopa Vishwanathan

Bottleneck evaluation plays a crucial part in performance tuning of HPC applications, as it directly influences the search for optimizations and the selection of the best hardware for a given code. In this paper, we introduce a new…

Performance · Computer Science 2025-09-11 Aurélien Delval , Pablo de Oliveira Castro , William Jalby , Etienne Renault

The application of physical layer security in ad hoc networks has attracted considerable academic attention recently. However, the available studies mainly focus on the single-hop and two-hop network scenarios, and the price in terms of…

Information Theory · Computer Science 2017-05-16 Yang Xu , Jia Liu , Yulong Shen , Xiaohong Jiang , Norio Shiratori

Classification techniques can be used to analyze system behaviors, network protocols, and cryptographic primitives based on identifiable traits. While useful for defense, such classification can also be leveraged by attackers to infer…

Cryptography and Security · Computer Science 2026-01-13 Tushin Mallick , Cristina Nita-Rotaru , Ashish Kundu , Ramana Kompella

This paper concerns the problem of the absence of ingress filtering at the network edge, one of the main causes of important network security issues. Numerous network operators do not deploy the best current practice - Source Address…

Networking and Internet Architecture · Computer Science 2020-03-31 Maciej Korczyński , Yevheniya Nosyk , Qasim Lone , Marcin Skwarek , Baptiste Jonglez , Andrzej Duda

During the development of the security subsystem of modern information systems, a problem of the joint implementation of several access control models arises quite often. Traditionally, a request for the user's access to resources is…

Cryptography and Security · Computer Science 2018-12-21 S. V. Belim , N. F. Bogachenko , Y. S. Rakitskiy , A. N. Kabanov

Blockchain technology has been gaining great interest from a variety of sectors, including healthcare, supply chain and cryptocurrencies. However, Blockchain suffers from its limited ability to scale (i.e. low throughput and high latency).…

Cryptography and Security · Computer Science 2021-08-13 Abdelatif Hafid , Abdelhakim Senhaji Hafid , Adil Senhaji

Large Language Models (LLMs) aligned with human feedback have recently garnered significant attention. However, it remains vulnerable to jailbreak attacks, where adversaries manipulate prompts to induce harmful outputs. Exploring jailbreak…

Cryptography and Security · Computer Science 2024-12-23 Hongyi Li , Jiawei Ye , Jie Wu , Tianjie Yan , Chu Wang , Zhixin Li

The kernels of operating systems such as Windows, Linux, and MacOS are vulnerable to control-flow hijacking. Defenses exist, but many require efficient intra-address-space isolation. Execute-only memory, for example, requires read…

Cryptography and Security · Computer Science 2021-08-04 Spyridoula Gravani , Mohammad Hedayati , John Criswell , Michael L. Scott