When to Use Wireless Challenge-Response Physical Layer Authentication: Design of a Measurable Guideline for OFDM

Collection of recent networking and security research. Key contributions include: a new Maximum Differential Likelihood Generator (MDLG) adversary that exploits correlated OFDM subchannel responses and a measurable randomness-testing guideline for when physical-layer challenge–response authentication (PLA) is safe; an experimental evaluation of NIST-selected post-quantum cryptography (Kyber, Dilithium, Falcon) showing ciphertext/signature expansion harms handshake reliability and edge bandwidth; Aquaman, a transparent-proxy architecture for quantum-resilient session-key establishment (multi‑/Q