Necessary areas of activity in the field of national security of Ukraine are the development of cryptographic information security system, organization and establishment of production of domestic protected means and technologies of information processing. The quantum key distribution system QKD QuantUA is designed to implement secure inter-subscriber communication through the distribution of encryption keys and post-quantum block symmetric data encryption. Potential users of the system are the banking sector, public administrations, critical infrastructure of the state, subjects of state cyber security and others