We are delighted to present our latest work:
Antonia Tsili, Konstantinos Kordolaimis, Konstantinos Krilakis & Dimitris Syvridis
“A Scalable Framework for Post-Quantum Authentication in Public Key Infrastructures”
🔗 Access the paper: https://arxiv.org/abs/2504.12062
Overview & Key Contributions
- Proposes a hierarchical certificate authority (CA) architecture that supports both classical and post-quantum cryptographic (PQC) signature algorithms, enabling a smooth transition path toward quantum-safe authentication.
- Automates certificate issuance and verification, targeting scalability across many clients with minimal requirements on end entities.
- Protects the root CA certificates via cross-domain trust chains, allowing prompt switching between classical and PQC during transitional phases.
- Evaluates performance trade-offs for signature schemes SPHINCS⁺, Falcon, and Dilithium, exploring how issuance and verification scale under varying configurations.
This work contributes to the Allegro project’s goal of integrating quantum-aware security into practical network infrastructures.