  We introduce a new approach for circuit anonymous communication based on
Lizama's non-invertible Key Exchange Protocol (ni-KEP) which has been conceived
to work in the quantum era. Lizama's protocol has the smallest key size when
compared to main post-quantum schemes thus it becomes a promising alternative
for the quantum era. Circuit-based communication can be scaled to support the
Hidden Service Protocol (HSP) as well as cross-domain digital certificates that
promise greater computing security, speed and efficiency.
