Post-quantum secure transport system is a cryptographic communications technology designed to reduce risk as quantum computers increase the likelihood that existing cryptographic schemes could be compromised.
By switching and combining multiple cryptographic methods, including post-quantum cryptography (PQC), it mitigates risk, and through disaggregation of functional components it enables these capabilities to be provided across a variety of platforms.
Based on an architecture that uses Post-quantum secure transport system, NTT DOCOMO BUSINESS aims to realize end-to-end secure and reliable communications leveraging PQC and quantum key distribution (QKD).

NTT, Inc: Post-quantum secure transport technology (JP)

A web conferencing system that cannot be decrypted even by a quantum computer, using PQC and QKD

Using Post-quantum secure transport system together with NTT DOCOMO BUSINESS's patented technology, we succeeded in a proof-of-concept for encrypted communications that cannot be decrypted even by quantum computers, across the entire system, including key distribution. We also confirmed that by combining it with a smartphone-compatible web conferencing application that users can easily use, next-generation encrypted communications can be introduced with minimal effort.

NTT Communications Corporation: World’s first realization of encrypted communications using DOCOMO BUSINESS's patented technology that cannot be decrypted even by quantum computers (JP)