I’m happy to announce that my new book, Post-Quanten-Kryptografie (“Post-Quantum Cryptography”), has just been published.
Post-quantum cryptography is a fascinating field, but it is also a challenging one. The mathematics behind modern quantum-resistant cryptographic algorithms is often complex and diverse. Even many security professionals find topics such as lattices, error-correcting codes, hash-based signatures, or zero-knowledge techniques intimidating at first.
With this book, I set out to explain post-quantum cryptography as clearly and accessibly as possible. Rather than aiming for mathematical rigor, I focus on intuition. You will find very few theorems or formal proofs. Instead, I use analogies, simplified examples, and visual explanations designed to make the underlying ideas easier to grasp.
One example discussed in the book is the famous ladder problem, which is related to the family of multivariate crypto algorithms. It is a mathematical puzzle that can be stated in just a few words, yet turns out to be surprisingly difficult to solve. Examples like this help illustrate how seemingly simple mathematical questions can lead to deep and important concepts, much like those underlying post-quantum cryptography itself.
Of course, the book also covers the algorithms that are shaping the future of cryptography. Readers will encounter schemes such as CRYSTALS-Dilithium and CRYSTALS-Kyber, as well as hash-based signatures, code-based cryptography, MPC-in-the-head signatures, and many other post-quantum approaches.
If you would like to take a closer look before buying the book, you can find a sample chapter here.
At the moment, the book is available only in German. Whether an English edition will follow is still undecided, but I would certainly be pleased to see the book reach an international audience.
If you are interested in my other publications, you can find an overview of all the books I have written here.
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