Hannes Bartz of Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

The emergence of large-scale quantum computers poses a fundamental challenge to widely deployed public-key cryptographic systems, particularly those based on integer factorization and discrete logarithms. This tutorial provides an accessible introduction to quantum-resistant cryptography and surveys recent developments shaping the transition toward post-quantum security. We begin by reviewing the quantum threat, including the cryptanalytic capabilities of Shor’s and Grover’s algorithms, and discuss their implications for current cryptographic infrastructures.

We then introduce the main families of quantum-resistant schemes and highlight their underlying security assumptions, algorithmic principles, and practical trade-offs. To put these developments into context, the tutorial also reviews recent results in quantum computing that provide an estimate on the timeline when cryptographically-relevant quantum computers can be expected.

Finally, we examine recent progress in the cryptanalysis of quantum-resistant schemes. By connecting developments in quantum computing with advances in cryptanalysis, the tutorial provides a current perspective on both the opportunities and challenges involved in designing and deploying cryptographic systems that can withstand future quantum attacks.

Biography:

Hannes Bartz received his Dr.-Ing. degree from the Technical University of Munich in 2017. In his dissertation (supervised by Prof. Gerhard Kramer) he developed efficient algebraic decoding schemes for error-correcting codes in subspace and rank metric. These codes are of particular interest for error control in network coding as well as for code-based cryptosystems.

In July 2017 he joined the Information Transmission Group within the Satellite Networks department at the German Aerospace Center (DLR) where he worked code-based post-quantum cryptosystems. Since April 2021 he is leading the Quantum-Resistant Cryptography (QRC) group within the Satellite Networks department.

Email:

Address: Münchener Str. 20, , Oberpfaffenhofen , Bayern, Germany, 82234

Petar Popovski of ETH Zürich

The advent of quantum information technologies disrupts the evolution of communication systems in at least two ways. First, the type of data exchanged over communication networks is extended from classical to quantum information. Second, several fundamental operations in distributed quantum systems critically depend on classical communication, such as quantum teleportation and Quantum Key Distribution (QKD). This talk will explain the fundamentals of communication and networking for quantum applications, as well as their interaction with classical communication systems. It will begin with a brief introduction to quantum information and its key differences from classical information. Basic quantum networking protocols will then be presented, such as teleportation and purification, highlighting parallels with their classical counterparts. Several protocols will be analyzed in detail, including those for joint communication and entanglement distribution, as well as satellite-assisted entanglement distribution. The final part of the talk will address 1Q, the first generation of quantum wireless systems that may succeed 6G around 2040, featuring both quantum and classical cells.

Biography:

Petar Popovski (IEEE Fellow) is a Professor at Aalborg University, where he heads the section on Connectivity and is Director of CLASSIQUE, a center for classical communication in quantum systems. He also holds the position of a Visiting Excellence Chair at the University of Bremen and Visiting Professor at University of Sts. Cyril and Methodius (UKIM) in Skopje. He received his Dipl.-Ing (1997) and M. Sc. (2000) degrees in communication engineering from UKIM, Skopje and the Ph.D. degree (2005) from Aalborg University. He received an ERC Consolidator Grant (2015), the Danish Elite Researcher award (2016), IEEE Fred W. Ellersick prize (2016), IEEE Stephen O. Rice prize (2018), Technical Achievement Award from the IEEE Technical Committee on Smart Grid Communications (2019), the Danish Telecommunication Prize (2020) and Villum Investigator Grant (2021). He authored the book ``Wireless Connectivity: An Intuitive and Fundamental Guide'', published by Wiley in 2020. He was the Chair of the IEEE Communication Theory Technical Committee and Editor-in-Chief of IEEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS. His research interests are in communication theory.

Email:

Address:Selma Lagerløfs Vej 312, , Aalborg, Denmark, 9220