Quantum cryptography and cryptography in a post-quantum world

So in my previous article on quantum computing, we talked about where we are today, and where we are headed in regards to breakthroughs in the technology as well as touching on some basics of “what is quantum computing“. In this article, I explore what quantum cryptography and cryptography is like in a post-quantum world.

So, a refresher: quantum computing is set to transform cryptography due to the revolutionary, non-deterministic way of operating.

How will they affect existing cryptography algorithms and which options do we know today for doing cryptography in a post-quantum world?

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Quantum computing and cybersecurity: A quantum of solace or a massive threat?

For as long as it has been in development inside the science labs of the universities, corporations and government agencies, quantum computing has been considered the next frontier in cybersecurity. Quantum computers are machines that do not work with classical electrical on and off-states but instead rely on quantum states that can be in several states at once, a circumstance known as „superposition(1)“. While they are still in their very infancy, their capabilities have been mystified over and over and it’s probably fair to say that quantum computing is one of the most misunderstood technological advancements of our day and age.


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