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Lecture notes in computer science

Post-Quantum Cryptography: State of the Art

Johannes A Buchmann, Denis Butin, Florian Göpfert, Albrecht Petzoldt

Published Jan 1, 2016• 57 citations
Publisher
DOI
10.1007/978-3-662-49301-4_6

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The paper explains that post-quantum cryptography is necessary due to the introduction of quantum computing causing certain algorithms to be broken. We analyze the different types of post-quantum cryptography, quantum cryptography and quantum-resistant cryptography, to provide a thorough understanding of the current solutions to the problems and their limitations. We explain the current state of quantum computing and how it has changed over time while discussing possible attacks on both types of post-quantum cryptography. Next, current post-quantum algorithms are discussed, and implementations are demonstrated. Lastly, we conclude that due to quantum cryptography's present limitations it is not a viable solution like it is often presented to be and that it is currently better to use quantum-resistant cryptography.
Despite large-scale fault-tolerant quantum computers not yet being a reality, their eventual advent poses a menace for current cybersecurity systems. Post-quantum cryptography examines cryptographic solutions in an era where largescale quantum computers will be available to organisms that may have an interest in breaking our current cybersecurity systems. Quantum cryptography aims to use quantum technologies to create new cryptographic solutions. In this systematic mapping, we study the current state of the art of quantum and postquantum cryptography through a systematic search in chosen databases, and the impact this post-quantum paradigm will have on present cybersecurity.