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Domain Name Service is a trusted protocol made for name resolution, but during past years some approaches have been developed to use it for data transfer. DNS Tunneling is a method where data is encoded inside DNS queries, allowing…

Cryptography and Security · Computer Science 2020-06-16 Franco Palau , Carlos Catania , Jorge Guerra , Sebastian Garcia , Maria Rigaki

Quantum computing is becoming strategically relevant to finance because several core financial bottlenecks are already defined by combinatorial search, expectation estimation, rare-event analysis, representation learning, and long-horizon…

Computational Finance · Quantitative Finance 2026-04-10 Hui Gong , Akash Sedai , Thomas Schroeder , Francesca Medda

Quantum computing represents an emerging threat to the public key infrastructure underlying transport layer security (TLS) widely used in the Internet. This paper describes how QKD symmetric keys can be used with TLS to provide quantum…

Cryptography and Security · Computer Science 2020-07-13 Bernardo Huberman , Bob Lund , Jing Wang

Domain Name System (DNS) is a critical component of the Internet infrastructure, responsible for translating domain names into IP addresses. However, DNS is vulnerable to some malicious attacks, including DNS cache poisoning, which…

Cryptography and Security · Computer Science 2023-12-08 Yufan Fu , Jiuqi Wei , Ying Li , Botao Peng , Xiaodong Li

With the advent of post-quantum cryptography (PQC) standards, it has become imperative for resource-constrained devices (RCDs) in the Internet of Things (IoT) to adopt these quantum-resistant protocols. However, the high computational…

Cryptography and Security · Computer Science 2025-04-15 Hamid Amiriara , Mahtab Mirmohseni , Rahim Tafazolli

Post-quantum security is critical in the quantum era. Quantum computers, along with quantum algorithms, make the standard cryptography based on RSA or ECDSA over FL or Blockchain vulnerable. The implementation of post-quantum cryptography…

Cryptography and Security · Computer Science 2023-07-04 Dev Gurung , Shiva Raj Pokhrel , Gang Li

Distributed Denial-of-Service (DDoS) attacks can occur in quantum networks, which can pose a significant threat to its key distribution protocols. We introduce a quantum analogue of a classical entropic DDoS detection system, and apply it…

Quantum Physics · Physics 2022-03-18 Del Rajan

Quantum digital signatures (QDS) offer information-theoretic security for message integrity, authenticity, and non-repudiation, and constitute a fundamental cryptographic primitive for future quantum networks. Despite significant progress,…

Communication security has to evolve to a higher plane in the face of the threat from the massive computing power of the emerging quantum computers. Quantum secure direct communication (QSDC) constitutes a promising branch of quantum…

Quantum Physics · Physics 2025-01-03 Dong Pan , Gui-Lu Long , Liuguo Yin , Yu-Bo Sheng , Dong Ruan , Soon Xin Ng , Jianhua Lu , Lajos Hanzo

This paper describes the work carried out by the Inter-American Development Bank, the IDB Lab, LACChain, Cambridge Quantum Computing (CQC), and Tecnologico de Monterrey to identify and eliminate quantum threats in blockchain networks. The…

Every Web session involves a DNS resolution. While, in the last decade, we witnessed a promising trend towards an encrypted Web in general, DNS encryption has only recently gained traction with the standardisation of DNS over TLS (DoT) and…

Cryptography and Security · Computer Science 2024-02-01 Jayasree Sengupta , Mike Kosek , Justus Fries , Simone Ferlin , Pratyush Dikshit , Vaibhav Bajpai

Recently, low-altitude wireless networks (LAWNs) have emerged as a critical backbone for supporting the low-altitude economy, particularly with the densification of unmanned aerial vehicles (UAVs) and high-altitude platforms (HAPs). To meet…

Cryptography and Security · Computer Science 2025-07-22 Zeeshan Kaleem , Misha Urooj Khan , Ahmad Suleman , Waqas Khalid , Kai-Kit Wong , Chau Yuen

The Domain Name System Security Extensions (DNSSEC) are critical for preventing DNS spoofing, yet its specifications contain ambiguities and vulnerabilities that elude traditional "break-and-fix" approaches. A holistic, foundational…

Cryptography and Security · Computer Science 2025-12-15 Qifan Zhang , Zilin Shen , Imtiaz Karim , Elisa Bertino , Zhou Li

Digital healthcare is essential to facilitate consumers to access and disseminate their medical data easily for enhanced medical care services. However, the significant concern with digitalization across healthcare systems necessitates for…

Cryptography and Security · Computer Science 2024-10-07 Kishu Gupta , Deepika Saxena , Pooja Rani , Jitendra Kumar , Aaisha Makkar , Ashutosh Kumar Singh , Chung-Nan Lee

The Domain Name System (DNS) is central to all Internet user activity, resolving accessed domain names into Internet Protocol (IP) addresses. As a result, curious DNS resolvers can learn everything about Internet users' interests. Public…

Cryptography and Security · Computer Science 2025-09-30 Philip Sjösvärd , Hongyu Jin , Panos Papadimitratos

Quantum digital signatures (QDSs), which utilize correlated bit strings among sender and recipients, guarantee the authenticity, integrity, and nonrepudiation of classical messages based on quantum laws. Continuous-variable (CV) quantum…

Quantum Physics · Physics 2024-11-25 Yi-Fan Zhang , Wen-Bo Liu , Bing-Hong Li , Hua-Lei Yin , Zeng-Bing Chen

Sensitive digital data, such as health information or governmental archives, are often stored for decades or centuries. The processing of such data calls for long-term security. Secure channels on the Internet require robust key…

As quantum computing matures toward the realization of Cryptographically Relevant Quantum Computers (CRQC), global cryptographic infrastructure faces an existential threat. This paper introduces a two-dimensional coordinate system to map…

Cryptography and Security · Computer Science 2026-04-23 Ashish Kundu , Ramana Kompella

Quantum computing poses significant threats to conventional cryptographic techniques such as RSA and AES, motivating the need for quantum secure communication methods. Quantum Key Distribution (QKD) offers information theoretic security…

Quantum digital signatures (QDSs) promise information-theoretic security against repudiation and forgery of messages. Compared with currently existing three-party QDS protocols, multiparty protocols have unique advantages in the practical…