Post-Q-Cryptography

It is useful to point out that post-Q-Cryptography has nothing to do with Q-Cryptography, except for the fact that it could be considered resistant to quantum computing (maybe it is only a chimera). When we talk about post-Q-Cryptography, we refer to classical algorithm candidates being resistant to quantum computing.

If quantum computing were to raise its power, expressed in a satisfying number of qubits, and were implemented on appropriate hardware able to perform the quantum computation, many of the algorithms that have been discussed in this book would be breached. However, nowadays, a quantum computer occupies an entire room of space and works through hardware made by several components (most of them prepared to keep the qubits in a state of entanglement at frozen temperatures). As soon as the dimensions of the hardware are reduced and its calculation power increases, most of the following algorithms would probably fail in terms of timing, which could...