Description: I am a postdoctoral researcher working in cryptography and computer security at ETH Zurich.
security (10021) research (8973) cryptography (286) günther (74) felix günther (1)
I am a senior researcher in the Applied Cryptography Group at ETH Zurich led by Kenny Paterson . My research focuses on real-world cryptographic systems, contributing to the security of Internet security protocols like TLS, QUIC, or Signal and their cryptographic building blocks.
Earlier and supported by a research fellowship of the German Research Foundation (DFG) , I was a postdoctoral researcher at ETH Zurich and in the Security and Cryptography Group at UC San Diego , working with Mihir Bellare . I obtained my Ph.D. in Computer Science from Technische Universität Darmstadt in 2018 under the supervision of Marc Fischlin in the Cryptography and Complexity Theory (Cryptoplexity) Group , and, earlier, M.Sc. degrees in Computer Science and IT Security from TU Darmstadt. I am a member
As an applied cryptographer, I am interested in how cryptography enables computer and network security, and in provable cryptographic security more specifically. My work aims to narrow the gap between the theoretical understanding and practical security of real-world cryptographic systems. I especially focus on Internet cryptographic protocols such as TLS, QUIC, or Signal, studying their security and concrete parameters, as well as constructing new cryptographic building blocks for improved security. In doi