Securing 100+ Gbps wireless fronthaul links in the 100–300 GHz band against eavesdropping and quantum-assisted computational cryptanalysis.
Sub-THz carriers deliver extreme bandwidth but remain susceptible to parabolic interceptors. The gateway injects 256-bit AES-GCM session keys refreshed every 60 seconds via ML-KEM key encapsulation into FPGA MACsec framing pipelines running at 400 Gbps with less than 20 nanoseconds added latency.
By coordinating massive MIMO beamforming arrays to inject artificial directional noise along non-authorized angles of arrival, the gateway reduces eavesdropper signal-to-noise ratio below Shannon secrecy capacity limits while maintaining clean constellation throughput for legitimate 6G gNodeBs.