There are 2 repositories under bb84 topic.
Python simulation of protocol BB84 for QKD.
BB84 QKD Protocol Simulation
BB84 Quantum Key Distribution implemented using the SimulaQron Python API
Possible implementation of BB84 protocol using Simulaqron
Example of quantum communication using polarization-coded photons
Implementation of the BB84 quantum key distribution protocol using Python's numpy library
Montecarlo simulation of BB84 protocol