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In this paper, we propose a very secure and reliable owner-self-managed private key recovery method. In recent years, Public Key Authentication (PKA) method has been identified as the most feasible online security solution. However, losing…

Cryptography and Security · Computer Science 2022-09-21 Wei-Hsin Chang , Ren-Song Tsay

Quantum computing threatens the security foundations of consumer electronics (CE). Preparing the diverse CE ecosystem, particularly resource-constrained devices, for the post-quantum era requires quantitative understanding of…

Cryptography and Security · Computer Science 2025-06-16 Daniel Commey , Benjamin Appiah , Griffith S. Klogo , Winful Bagyl-Bac , James D. Gadze , Yousef Alsenani , Garth V. Crosby

Quantum key distribution (QKD) can provide information theoretically secure key exchange even in the era of quantum computer. However, QKD requires the classical channel to be authenticated, and the current method is pre-sharing symmetric…

This work explores the performance and scalability of a hierarchical certificate authority framework with automated certificate issuance employing post-quantum cryptographic (PQC) signature algorithms. The system is designed for…

Cryptography and Security · Computer Science 2025-04-17 Antonia Tsili , Konstantinos Kordolaimis , Konstantinos Krilakis , Dimitris Syvridis

We propose a quantum authentication and digital signature protocol whose security is founded on the Quantum Merlin Arthur~(QMA)-completeness of the consistency of local density matrices. The protocol functions as a true public-key…

Quantum Physics · Physics 2025-06-23 Le-Ran Liu , Min-Quan He , Dan-Bo Zhang , Z. D. Wang

Quantum Key Distribution (QKD) offers information-theoretic security against quantum computing threats, but integrating QKD into existing security protocols remains an unsolved challenge due to fundamental mismatches between pre-distributed…

Quantum key distribution (QKD) provides information theoretically secures key exchange requiring authentication of the classic data processing channel via pre-sharing of symmetric private keys. In previous studies, the lattice-based…

The New Space era has led to a rapid increase in satellites operated by independent entities in near-Earth orbit. This shift enables richer space services but also requires secure, near-real-time coordination, making efficient…

Cryptography and Security · Computer Science 2026-05-08 Rehana Yasmin , Paulo Esteves-Verissimo , Ali Shoker

This research investigates the potential use of a blockchain-based Public Key Infrastructure (PKI) within an organization and compares it to conventional PKI systems. The goal is to assess the advantages and disadvantages of both approaches…

Cryptography and Security · Computer Science 2024-07-08 Julian Springer , Philipp Haindl

We propose the use of PAKE for achieving and enhancing entity authentication (EA) and key management (KM) in the context of decentralized end-to-end encrypted email and secure messaging, i.e., where neither a public key infrastructure nor…

Cryptography and Security · Computer Science 2021-07-14 Itzel Vazquez Sandoval , Arash Atashpendar , Gabriele Lenzini , Peter Y. A. Ryan

The problem of adopting quantum-resistant cryptographic network protocols or post-quantum cryptography (PQC) is critically important to democratizing quantum computing. The problem is urgent because practical quantum computers will break…

Networking and Internet Architecture · Computer Science 2024-08-09 Jakub Sowa , Bach Hoang , Advaith Yeluru , Steven Qie , Anita Nikolich , Ravishankar Iyer , Phuong Cao

The proliferation of Internet of Things (IoT) networks demands security mechanisms that protect constrained devices without the computational cost of public-key cryptography. Conventional Pre-Shared Key (PSK) encryption, while efficient,…

Cryptography and Security · Computer Science 2025-12-09 Haranath Rakshit , Rajkumar Bhandari , Subhasis Banerjee

The emergence of large-scale quantum computing threatens widely deployed public-key cryptographic systems, creating an urgent need for enterprise-level methods to assess post-quantum (PQ) readiness. While PQ standards are under development,…

Cryptography and Security · Computer Science 2026-01-08 Rasmus Erlemann , Charles Colyer Morris , Sanjyot Sathe

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

The advent of quantum computing threatens the security of classical public-key cryptographic systems, prompting the transition to post-quantum cryptography (PQC). While PQC has been analyzed in theory, its performance in practical wireless…

Cryptography and Security · Computer Science 2025-07-24 Sanzida Hoque , Abdullah Aydeger , Engin Zeydan , Madhusanka Liyanage

The central role of the certificate authority (CA) in traditional public key infrastructure (PKI) makes it fragile and prone to compromises and operational failures. Maintaining CAs and revocation lists is demanding especially in…

Cryptography and Security · Computer Science 2021-01-01 Mohsen Toorani , Christian Gehrmann

In recent years, the advancement of quantum computing technology has posed potential security threats to RSA cryptography and elliptic curve cryptography. In response, the National Institute of Standards and Technology (NIST) published…

Cryptography and Security · Computer Science 2025-07-30 Abel C. H. Chen

The MPC-in-the-head introduced in [IKOS07] has established itself as an important paradigm to design efficient digital signatures. It has been leveraged in the Picnic scheme [CDG+ 20] that reached the third round of the NIST PQC…

Cryptography and Security · Computer Science 2022-10-18 Loïc Bidoux , Philippe Gaborit

As quantum technologies advance, the security of popular cryptographic protocols becomes more threatened by the capabilities of Cryptographically Relevant Quantum Computers (CRQCs). In this scenario, Post-Quantum Cryptography (PQC) has…

The purpose of this article is to provide an overview of the PKI project initiated part of the UAE national ID card program. It primarily shows the operational model of the PKI implementation that is indented to integrate the federal…

Computers and Society · Computer Science 2011-06-01 Ali M. Al-Khouri