Quantum-Safe AUSF

Technical Explanation

The Authentication Server Function (AUSF) performs the mutual authentication handshake verifying device authenticity. In 6G, the AUSF executes post-quantum 5G-AKA and EAP-AKA' protocols upgraded with lattice-based digital signatures (ML-DSA) and post-quantum key encapsulation (ML-KEM). This ensures that neither base stations nor rogue cellular interceptors can clone device identities or forge network authentication tokens.

Key Functions

• Executing post-quantum mutual authentication protocols (6G-AKA and EAP-PQC)
• Verification of lattice-based cryptographic signatures on subscriber authentication requests
• Generating quantum-secure session anchor keys (Kausf / Kseaf) for the serving network
• Mitigating rogue base station spoofing and cellular IMSI/SUPI interception
• High-throughput parallel authentication processing handling 100,000+ handshakes/sec