PQC and QKD Are Both Required to Enable a Quantum-Safe Future
Noel Farrugia, Daniel Bonanno, Nicholas Frendo, André Xuereb · NATO science for peace and security series. D, Information and communication security · 2024
Quantum Key Distribution (QKD) and Post Quantum Cryptography (PQC) are often incorrectly assumed to be competitors of one another. In reality, they are complementary technologies aimed at solving different problems, with each having strengths and weaknesses that the other does not have. In this article, we will briefly summarise the current state of QKD and PQC, highlighting the advantages, disadvantages, and limitations of each technology stack. Finally, we explain our take on how both these technologies can be combined to provide better solutions that are better than any solution that uses solely PQC or QKD.