# Physics and Security – from Random Numbers to Secure Communication

#### 806. WE-Heraeus-Seminar

05 Mar - 08 Mar 2024

Where:

Physikzentrum Bad Honnef

Scientific organizers:

Ilja Gerhardt, Leibniz University Hannover • Manfred Lochter, Bundesamt für Sicherheit in der Informationstechnik

(BSI), Bonn • Ömer Bayraktar, Max Planck Institute for the Science of Light, Erlangen

The fields of cryptography and quantum physics have seen major leaps forward in the past 50 years. Cryptographic methods, such as asymmetric key-agreement and signatures using elliptic curves have been developed, which are now potentially endangered by a possible quantum computer. Therefore, crypto-systems which are assumed to be “quantum-secure” are at the focus of current cryptographic research. In parallel, the foundations of quantum mechanics are nowadays the base for developments in quantum technologies – a field which promises to secure messages, which are – in theory – guaranteed by the laws of physics, and not the assumption of a certain mathematical complexity. However, the security of real-world and wide-spread implementation of such methods still has to be proven. This workshop addresses young quantum physicists who work on modern quantum technologies to understand the basics of information theory, number theory and cryptography. Similarly, the workshop addresses young researchers in information theory and computer science to understand the basics of quantum mechanics and the underlying physics which might endanger their crypto-systems or not.

The conference language will be English. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants.