That’s why a much much computationally expensive key exchange scheme using an asymmetric (or public-key) cryptography scheme is generally used to set up the second part of the communications ...

or read about the difference between quantum and post-quantum cryptography (the former being both post-quantum but also not part of the latter), then this book is an ideal starting point.

Yin's work, known around the world, provides the foundations of numerous global cryptography standards. "Having a deep understanding of advanced cryptographic techniques is crucial to the ...