Technical analysis and engineering reference.
If an adversary armed with a quantum computer can forge an RSA or ECC digital signature, they could broadcast an authentic-looking de-orbit burn command or battery overcharge sequence to an orbital satellite, inducing vehicle loss. Because satellites remain in orbit for a decade, command verification must transition to quantum-resistant primitives immediately.
NTNTrust implements NIST-standardized digital signature algorithms: - ML-DSA (CRYSTALS-Dilithium) for standard ground-to-space operational telecommands, offering sub-millisecond hardware verification times. - SLH-DSA (SPHINCS+) stateless hash-based signatures for high-criticality flight termination and emergency firmware overwrite commands, providing provable security relying only on the security of SHA-256/SHAKE.
Verification runs inside radiation-hardened crypto co-processors executing modular polynomial arithmetic, guaranteeing that quantum signature verification does not introduce latency bottlenecks to urgent collision avoidance operations.