Quantifying quantum risk: a measure of crypto agility

• URL: http://arxiv.org/abs/2606.17116v1
• Date: Mon, 15 Jun 2026 10:12:06 GMT
• Title: Quantifying quantum risk: a measure of crypto agility
• Abstract summary: We introduce the concept of rotation time as a measure of crypto agility.<n>We derive an approximation that links rotation time tolerance to security risk tolerance.<n>This demonstrates that using crypto agility in conjunction with hybrid encryption is an effective approach for designing quantum-resilient systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Because of their ability to enable new forms of cryptanalysis, quantum computers pose a threat to the cryptographic algorithms that are widely used to secure contemporary computer systems. A practical quantum computer may emerge within the next ten years or so, but due to theorised "harvest now, decrypt later" style attacker behaviour, mitigations are necessary today. Recent advances in cryptography and security architecture show promise in supporting the design of systems that exhibit resilience against quantum-enabled cryptanalysis, however there is a key gap in the literature around the subject of deriving tolerances for such systems. In this paper, we introduce the concept of rotation time as a measure of crypto agility, and derive an approximation that links rotation time tolerance to security risk tolerance. Historical CVE data is used to calculate illustrative values for rotation time tolerance, which is found to be of the order of hours to days. This demonstrates that using crypto agility in conjunction with hybrid encryption is an effective approach for designing quantum-resilient systems, but may necessitate challenging technical and operational tolerances in order to meet organisational risk tolerances.

Related papers

• Securing Cryptography in the Age of Quantum Computing and AI: Threats, Implementations, and Strategic Response [3.4562767039451674]
  RSA and elliptic curve cryptography are at risk of compromise from quantum computers.<n> lattice-based algorithms resist known quantum attacks but require careful implementation to prevent side-channel leakage.<n>Hash-based signatures provide conservative security with signature sizes ranging from 17 to 50 KB.
  arXiv  Detail & Related papers  (2026-03-07T01:07:35Z)
• Quantum-Resistant Cryptographic Models for Next-Gen Cybersecurity [1.3460582882338625]
  quantum-resistant cryptographic systems, otherwise known as post-quantum cryptography (PQC), are being formulated to protect cybersecurity systems of the future.<n>We study a hybrid cryptographic model that integrates the classical efficient cryptography scheme and a quantum-resilient cryptographic scheme to achieve a backward-compatible solution.
  arXiv  Detail & Related papers  (2025-12-22T03:47:06Z)
• Performance and Storage Analysis of CRYSTALS Kyber as a Post Quantum Replacement for RSA and ECC [45.88028371034407]
  CRYSTALS-Kyber is a post-quantum cryptographic solution standardized by NIST in 2022.<n>This study evaluates Kyber's practical viability through performance testing across various implementation schemes.
  arXiv  Detail & Related papers  (2025-08-03T09:53:45Z)
• Post-Quantum Cryptography: An Analysis of Code-Based and Lattice-Based Cryptosystems [55.49917140500002]
  Quantum computers will be able to break modern cryptographic systems using Shor's Algorithm.<n>We first examine the McEliece cryptosystem, a code-based scheme believed to be secure against quantum attacks.<n>We then explore NTRU, a lattice-based system grounded in the difficulty of solving the Shortest Vector Problem.
  arXiv  Detail & Related papers  (2025-05-06T03:42:38Z)
• Quantum-Safe integration of TLS in SDN networks [0.0]
  transition to quantum-safe cryptography within the next decade is critical.<n>We have selected Transport Layer Security as the foundation to hybridize classical, quantum, and post-quantum cryptography.<n>The performance of this approach has been demonstrated using a deployed production infrastructure.
  arXiv  Detail & Related papers  (2025-02-24T14:35:56Z)
• Evaluating the Potential of Quantum Machine Learning in Cybersecurity: A Case-Study on PCA-based Intrusion Detection Systems [42.184783937646806]
  We investigate the potential impact of quantum computing and machine learning (QML) on cybersecurity applications of traditional ML.<n>First, we explore the potential advantages of quantum computing in machine learning problems specifically related to cybersecurity.<n>Then, we describe a methodology to quantify the future impact of fault-tolerant QML algorithms on real-world problems.
  arXiv  Detail & Related papers  (2025-02-16T15:49:25Z)
• Quantum-enabled framework for the Advanced Encryption Standard in the post-quantum era [0.0]
  This paper presents an improved version of the Advanced Encryption Standard (AES) that uses quantum technology to strengthen protection.<n>The system generates encryption keys using quantum randomness instead of predictable computer algorithms, making keys virtually impossible to guess.<n> Organizations can implement this solution in stages--starting with hybrid mode for sensitive data while keeping older systems operational.
  arXiv  Detail & Related papers  (2025-02-04T16:11:37Z)
• Practical hybrid PQC-QKD protocols with enhanced security and performance [44.8840598334124]
  We develop hybrid protocols by which QKD and PQC inter-operate within a joint quantum-classical network. In particular, we consider different hybrid designs that may offer enhanced speed and/or security over the individual performance of either approach.
  arXiv  Detail & Related papers  (2024-11-02T00:02:01Z)
• Designing Hash and Encryption Engines using Quantum Computing [2.348041867134616]
  We explore quantum-based hash functions and encryption to fortify data security. The integration of quantum and classical methods demonstrates potential in securing data in the era of quantum computing.
  arXiv  Detail & Related papers  (2023-10-26T14:49:51Z)
• Demonstration of quantum-digital payments [36.136619420474766]
  We show how quantum light can secure daily digital payments by generating inherently unforgeable quantum cryptograms. Unlike previously proposed protocols, our solution does not depend on long-term quantum storage or trusted agents and authenticated channels. It is practical with near-term technology and may herald an era of quantum-enabled security.
  arXiv  Detail & Related papers  (2023-05-23T20:20:14Z)
• Revocable Cryptography from Learning with Errors [61.470151825577034]
  We build on the no-cloning principle of quantum mechanics and design cryptographic schemes with key-revocation capabilities. We consider schemes where secret keys are represented as quantum states with the guarantee that, once the secret key is successfully revoked from a user, they no longer have the ability to perform the same functionality as before.
  arXiv  Detail & Related papers  (2023-02-28T18:58:11Z)
• Backflash Light as a Security Vulnerability in Quantum Key Distribution Systems [77.34726150561087]
  We review the security vulnerabilities of quantum key distribution (QKD) systems. We mainly focus on a particular effect known as backflash light, which can be a source of eavesdropping attacks.
  arXiv  Detail & Related papers  (2020-03-23T18:23:12Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.