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Quantum digital signatures (QDS) exploit quantum laws to guarantee non-repudiation, unforgeability and transferability of messages with information-theoretic security. Current QDS protocols face two major restrictions, including the…

Quantum Physics · Physics 2021-04-09 Yu-Shuo Lu , Xiao-Yu Cao , Chen-Xun Weng , Jie Gu , Yuan-Mei Xie , Min-Gang Zhou , Hua-Lei Yin , Zeng-Bing Chen

The emergence of quantum computing and Shor's algorithm necessitates an imminent shift from current public key cryptography techniques to post-quantum robust techniques. NIST has responded by standardising Post-Quantum Cryptography (PQC)…

Cryptography and Security · Computer Science 2025-05-23 J Cameron Patterson , William J Buchanan , Callum Turino

The transition to a cloud-native 5G Service-Based Architecture (SBA) improves scalability but exposes control-plane signaling to emerging quantum threats, including Harvest-Now, Decrypt-Later (HNDL) attacks. While NIST has standardized…

Cryptography and Security · Computer Science 2026-03-31 Ricardo Alves Faval , Rodrigo Moreira , Flávio de Oliveira Silva

The emergence of quantum computing poses a fundamental threat to current public key cryptographic systems. This threat is necessitating a transition to quantum resistant cryptographic alternatives in all the applications. In this work, we…

Cryptography and Security · Computer Science 2026-01-22 Aditi Gandhi , Aakankshya Das , Aswani Kumar Cherukuri

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

The advent of quantum computing threatens classical cryptographic mechanisms, demanding new strategies for securing communication networks. Since real-world networks cannot be fully Quantum Key Distribution (QKD)-enabled due to…

Cryptography and Security · Computer Science 2026-02-24 Ane Sanz , Eire Salegi , Asier Atutxa , David Franco , Jasone Astorga , Eduardo Jacob

Quantum computing poses fundamental risks to classical blockchain systems by undermining widely used cryptographic primitives. In response, two major research directions have emerged: post-quantum blockchains, which integrate…

Cryptography and Security · Computer Science 2026-01-21 Saurav Ghosh , Niloy Deb Roy Mishu

Powerful quantum computers in the future may be able to break the security used for communication between vehicles and other devices (Vehicle-to-Everything, or V2X). New security methods called post-quantum cryptography can help protect…

Cryptography and Security · Computer Science 2026-02-03 Poushali Sengupta , Mayank Raikwar , Sabita Maharjan , Frank Eliassen , Yan Zhang

We design a model of Post Quantum Cryptography (PQC) Quantum Federated Learning (QFL). We develop a framework with a dynamic server selection and study convergence and security conditions. The implementation and results are publicly…

Cryptography and Security · Computer Science 2023-04-27 Dev Gurung , Shiva Raj Pokhrel , Gang Li

The rise of quantum computing/technology potentially introduces significant security challenges to cloud computing, necessitating quantum-resistant encryption strategies as well as protection schemes and methods for cloud infrastructures…

Cryptography and Security · Computer Science 2025-12-23 Aurelia Kusumastuti , Nikolay Tcholtchev , Philipp Lämmel , Sebastian Bock , Manfred Hauswirth

This paper studies how post-quantum cryptographic (PQC) security assumptions can be represented and communicated through a structured, layered framework that is useful for technical interpretation but does not replace formal cryptographic…

Cryptography and Security · Computer Science 2026-04-07 Daisuke Ishii , Rizwan Jahangir

With the ever-growing concern for internet security, the field of quantum cryptography emerges as a promising solution for enhancing the security of networking systems. In this paper, 20 notable papers from leading conferences and journals…

Cryptography and Security · Computer Science 2023-06-16 Mst Shapna Akter

We propose a novel hybrid universal network-coding cryptosystem (HUNCC) to obtain secure post-quantum cryptography at high communication rates. The secure network-coding scheme we offer is hybrid in the sense that it combines…

Information Theory · Computer Science 2020-09-07 Alejandro Cohen , Rafael G. L. D'Oliveira , Salman Salamatian , Muriel Medard

Shor's shockingly fast quantum algorithm for solving the period-finding problem is a threat for the most common public-key primitives, as it can be efficiently applied to solve both the Integer Factorisation Problem and the Discrete…

Cryptography and Security · Computer Science 2021-07-26 Nicola Di Chiano , Riccardo Longo , Alessio Meneghetti , Giordano Santilli

Biometric authentication has become integral to digital identity systems, particularly in smart cities where it en-ables secure access to services across governance, trans-portation, and public infrastructure. Centralised archi-tectures,…

Cryptography and Security · Computer Science 2026-01-09 Tooba Qasim , Vasilios A. Siris , Izak Oosthuizen , Muttukrishnan Rajarajan , Sujit Biswas

Post-quantum cryptography currently rests on a small number of hardness assumptions, posing significant risks should any one of them be compromised. This vulnerability motivates the search for new and cryptographically versatile assumptions…

Quantum Physics · Physics 2026-03-20 Jonathan Z. Lu , Alexander Poremba , Yihui Quek , Akshar Ramkumar

Quantum computers impose an immense threat to system security. As a countermeasure, new cryptographic classes have been created to prevent these attacks. Technologies such as post-quantum cryptography and quantum cryptography. Quantum…

Cryptography and Security · Computer Science 2025-06-04 Luiz Filipi Anderson de Sousa Moura , Carlos Becker Westphall

The emergence of quantum computing poses a formidable security challenge to network protocols traditionally safeguarded by classical cryptographic algorithms. This paper provides an exhaustive analysis of vulnerabilities introduced by…

Cryptography and Security · Computer Science 2024-05-08 Yaser Baseri , Vikas Chouhan , Abdelhakim Hafid

The advent of quantum computing poses a significant challenge as it has the potential to break certain cryptographic algorithms, necessitating a proactive approach to identify and modernize cryptographic code. Identifying these…

Cryptography and Security · Computer Science 2025-03-26 Micha Moffie , Omer Boehm , Anatoly Koyfman , Eyal Bin , Efrayim Sztokman , Sukanta Bhattacharjee , Meghnath Saha , James McGugan

Post-quantum cryptography is inevitable. National Institute of Standards and Technology (NIST) starts standardizing quantum-resistant public-key cryptography (aka post-quantum cryptography). The reason is that investment in quantum…

Quantum Physics · Physics 2022-08-02 Quan Thoi Minh Nguyen