MAGIQ: A Post-Quantum Multi-Agentic AI Governance System with Provable Security

Our computing ecosystem is being transformed by two emerging paradigms: the increased deployment of agentic AI systems and advancements in quantum computing. With respect to agentic AI systems, one of the most critical problems is creating secure governing architectures that ensure agents follow...

A Cryptography Engineer’s Perspective on Quantum Computing Timelines

My position on the urgency of rolling out quantum-resistant cryptography has changed compared to just a few months ago. You might have heard this privately from me in the past weeks, but it’s time to signal and justify this change of mind publicly. There had been rumors for a while of expected an...

Lean Crypto Library 安全漏洞

Lean Crypto Library is a lightweight quantum-resistant cryptographic algorithm library developed by smuellerDD as an individual project. Versions of Lean Crypto Library prior to 1.7.1 contained security vulnerabilities. These vulnerabilities stemmed from integer overflows that occurred when the...

Quantum Bit Error Rate Analysis in BB84 Quantum Key Distribution: Measurement, Statistical Estimation, and Eavesdropping Detection

Quantum Key Distribution QKD provides information-theoretic security by exploiting the principles of quantum mechanics. Among QKD protocols, the BB84 scheme remains the most widely adopted for both theoretical research and practical implementation. A critical parameter determining the reliability...

Implementation and Transition to Post-Quantum Cryptography of the Minimal IKE Protocol

This paper concerns the Minimal Internet Key Exchange IKE protocol, which has received little attention to date, despite its potential to make the best-known IKE protocol sufficiently lightweight to be also applied in contexts where it is currently prohibitive, due to its large footprint. First, ...

Shaping a Quantum-Resistant Future: Strategies for Post-Quantum PKI

As the quantum computing era approaches, securing classical cryptographic protocols becomes imperative. Public key cryptography is widely used for signature and key exchange but it is the type of cryptography more threatened by quantum computing. Its application typically requires support via a...

Quantum-Resistant Cryptographic Models for Next-Gen Cybersecurity

Another threat is the development of large quantum computers, which have a high likelihood of breaking the high popular security protocols because it can use both Shor and Grover algorithms. In order to fix this looming threat, quantum-resistant cryptographic systems, otherwise known as...

Quantum-Resistant Authentication Scheme for RFID Systems Using Lattice-Based Cryptography

We propose a novel quantum-resistant mutual authentication scheme for radio-frequency identification RFID systems. Our scheme uses lattice-based cryptography and, in particular, achieves quantum-resistance by leveraging the hardness of the inhomogeneous short integer solution ISIS problem. In...

A Single-Root, Multi-Curve, Context-Isolated, PQC-Pluggable Cryptographic Identity Primitive with Stateless Secret Rotation

Cryptographic identity anchors modern decentralized systems, yet current standards like BIP-39 and BIP-32 are structurally insufficient for the demands of multi-curve, multi-domain, and post-quantum PQC environments. These legacy schemes rely on a monolithic identity root with no inherent context...

Enhancing NTRUEncrypt Security Using Markov Chain Monte Carlo Methods: Theory and Practice

This paper presents a novel framework for enhancing the quantum resistance of NTRUEncrypt using Markov Chain Monte Carlo MCMC methods. We establish formal bounds on sampling efficiency and provide security reductions to lattice problems, bridging theoretical guarantees with practical...

Post-Quantum Security of Block Cipher Constructions

Block ciphers are versatile cryptographic ingredients that are used in a wide range of applications ranging from secure Internet communications to disk encryption. While post-quantum security of public-key cryptography has received significant attention, the case of symmetric-key cryptography and...

Red Teaming Quantum-Resistant Cryptographic Standards: A Penetration Testing Framework Integrating AI and Quantum Security

This study presents a structured approach to evaluating vulnerabilities within quantum cryptographic protocols, focusing on the BB84 quantum key distribution method and National Institute of Standards and Technology NIST approved quantum-resistant algorithms. By integrating AI-driven red teaming,...

Preparing for the Post Quantum Era: Quantum Ready Architecture for Security and Risk Management (QUASAR) -- a Strategic Framework for Cybersecurity

As quantum computing progresses, traditional cryptographic systems face the threat of obsolescence due to the capabilities of quantum algorithms. This paper introduces the Quantum-Ready Architecture for Security and Risk Management QUASAR, a novel framework designed to help organizations prepare...

PQS-BFL: a Post-Quantum Secure Blockchain-Based Federated Learning Framework

Federated Learning FL enables collaborative model training while preserving data privacy, but its classical cryptographic underpinnings are vulnerable to quantum attacks. This vulnerability is particularly critical in sensitive domains like healthcare. This paper introduces PQS-BFL Post-Quantum...

NCSC Releases Post-Quantum Cryptography Timeline

The UK's National Computer Security Center part of GCHQ released a timeline--also see their blog post--for migration to quantum-computer-resistant cryptography. It even made The Guardian...

Lattice-Based Cryptosystems and Quantum Cryptanalysis

Quantum computers are probably coming, though we dont know when--and when they arrive, they will, most likely, be able to break our standard public-key cryptography algorithms. In anticipation of this possibility, cryptographers have been working on quantum-resistant public-key algorithms. The...

Why Apple added protection against quantum computing when quantum computing doesn’t even exist yet

Apple released a new update for nearly all its devices that provides an all-new type of encryption for its iMessages to the point that, in theory, iMessages are now protected against attacks from quantum computers. This is a little tricky because, as weve covered before, quantum computers dont...

Apple Unveils PQ3 Protocol - Post-Quantum Encryption for iMessage

Apple has announced a new post-quantum cryptographic protocol called PQ3 that it said will be integrated into iMessage to secure the messaging platform against future attacks arising from the threat of a practical quantum computer. "With compromise-resilient encryption and extensive defenses...

Signal Messenger Introduces PQXDH Quantum-Resistant Encryption

Encrypted messaging app Signal has announced an update to the Signal Protocol to add support for quantum resistance by upgrading the Extended Triple Diffie-Hellman X3DH specification to Post-Quantum Extended Diffie-Hellman PQXDH. "With this upgrade, we are adding a layer of protection against the...

Google Chrome's New Feature Alerts Users About Auto-Removal of Malicious Extensions

Google has announced plans to add a new feature in the upcoming version of its Chrome web browser to proactively alert users when an extension they have installed has been removed from the Chrome Web Store. The feature, set for release alongside Chrome 117, allows users to be notified when an...