Practical Internet of Things Security - Second Edition

Post quantum cryptography

We mention Post Quantum (PQ) cryptography in this section because it represents perhaps one of the most challenging cryptographic upgrade scenarios worldwide. Cryptography is based on difficult math problems, whether the discrete logarithm problem, the ability to rapidly factor large numbers in a finite field or over an elliptic curve, and others. Today's cryptography is threated by the rapid progress being made in the field of quantum computers (note: we are not talking about quantum cryptography here, but rather about the application of a quantum computer to break today's cryptography). The implications are severe because many types of organizations, most notably nation states, collect and retain vast troves of ...