PQ-SMS: A Post-Quantum Sanitizable Multi-Signature Scheme for Satellite PKI (opens in new tab)

Satellite communication systems, as critical long-lifecycle infrastructure, face a dual security challenge in the coming decades: the threat of quantum computers and the operational rigidity of traditional Public Key Infrastructure (PKI). While migrating to Post-Quantum Cryptography (PQC) addresses the former, it fails to solve the inefficiency of certificate management, where in-orbit policy updates require a prohibitively slow and complex multi-party re-issuance process. To address these ch...