The Best of Both Worlds: Hybrid Authenticated Key Exchange for QKD(N) without Signatures

A scalable quantum-safe authentication framework for multi-site QKD networks using post-quantum cryptography

Quantum Key Distribution (QKD) offers information-theoretic security for key exchange; however, its effective implementation is contingent upon the security of the classical communication channel, especially for authentication purposes. This work presents a system-level study of quantum-safe authentication for the clas...

Combining Post-Quantum Cryptography and Quantum Key Distribution: Taxonomy, Constructions, Proofs, Standards, Deployments and Open Problems

Post-quantum cryptography (PQC) and quantum key distribution (QKD) address the quantum threat from opposite directions: PQC replaces vulnerable public-key algorithms with schemes believed to resist quantum cryptanalysis, while QKD derives keys whose secrecy rests on physical assumptions rather than computational ones....

Enclave-Anchored Hybrid Quantum-Safe Key Exchange for Untrusted Platforms

The transition to Post-Quantum Cryptography (PQC) is often reduced to a primitive-replacement problem, yet the security of PQC schemes remains dependent on the integrity of the underlying host. Quantum-secure protocol frameworks like Muckle offer robust hybrid security by combining classical, post-quantum and quantum k...

Design and Comparative Evaluation of a Hybrid Post-Quantum Key Exchange Protocol for Quantum-Resistant Onion Routing Networks

The migration from classically secure key agreement to post-quantum cryptography (PQC) is now a practical engineering problem rather than a distant theoretical one and anonymity networks face a particularly acute version of it. Traffic captured today on the Tor network can be archived and decrypted years later once a c...

Hybrid Quantum–Computational Key Distribution with Reduced Assumptions (Short Paper)

This work reviews the HM-QCT protocol and its two-assumption model and introduces HM-PRF, a variant that replaces the short-term encryption with a pseudorandom function (PRF), evaluated locally and argues that the PRF-based assumption yields a more realistic adversary.

A Post-Quantum Password-Based Authenticated Key Exchange Scheme Based on Commutative Supersingular Isogenies