Post-Quantum Cryptography, An Introduction
Red Hat News, June 15th, 2022
June 15, 2022,
Volume 291, Issue 3

A new type of computer is being developed that can break many of our existing cryptographic algorithms.

As a result, we need to develop new algorithms that are secure against those computers and that will run on our existing computers. This is called "post-quantum cryptography".

What is a quantum computer?

In 1981, Richard Feynman proposed a new way to model quantum interactions in complex systems. There is a problem when modeling these interactions, however, in that we need to represent each linked particle as a set of probabilities. As we add particles, these arrays grow exponentially. For any sufficiently large system, we can no longer handle the storage and time requirements using existing computers.

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