  Quantum random number generator harnesses the power of quantum mechanics to
generate true random numbers, making it valuable for various scientific
applications. However, real-world devices often suffer from imperfections that
can undermine the integrity and privacy of generated randomness. To combat this
issue, we present a novel quantum random number generator and experimentally
demonstrate it. Our approach circumvents the need for exhaustive
characterization of measurement devices, even in the presence of a quantum side
channel. Additionally, we also do not require detailed characterization of the
source, relying instead on reasonable assumptions about encoding dimension and
noise constraints. Leveraging commercially available all-fiber devices, we
achieve a randomness generation rate of 40 kbps.
