Alexander Mühle

I am a PhD student at the Hasso Plattner Institute in the departmenet for internet systems and technologies. I completed my BSc and MSc in Computer Science at the Technical University Berlin with a focus on distributed systems and networks.

My research interests centre around aspects of security and privacy in peer-to-peer applications as well as self-sovereign identity management.

news

Jan 31, 2023	Our paper “Requirements of a Digital Education Credential System” has been accepted at the IEEE Educon annual conference 2023.
Dec 1, 2022	Together with representatives of the TU Munich, we have presented our project “Digitale Bildungsnachweise für Hochschulen (DiBiHo)” at the Moving Target Conference 2022.
Aug 1, 2022	Our proposal “Revoking Digital Diplomas: A Forthcoming Challenges for Universities Adopting Digital Credentials” has been accepted at the EDUCAUSE annual conference 2022 and will be presented in Denver on the 26th of October in cooperation with the MIT and TU Munich.
Oct 28, 2021	Our paper “Clear the Fog: Towards a Taxonomy of Self-Sovereign Identity Ecosystem Members” has been accepted at the International Conference on Privacy, Security, and Trust 2021
Aug 11, 2021	Our paper “Gotta Catch’em All! Improving P2P Network Crawling Strategies” has been accepted at the International Conference on Digital Forensics and Cyber Crime 2021

selected publications

SSI

A survey on essential components of a self-sovereign identity

Mühle, Alexander, Grüner, Andreas, Gayvoronskaya, Tatiana, and Meinel, Christoph

Computer Science Review 2018

Abs

This paper provides an overview of the Self-Sovereign Identity (SSI) concept, focusing on four different components that we identified as essential to the architecture. Self-Sovereign Identity is enabled by the new development of blockchain technology. Through the trustless, decentralised database that is provided by a blockchain, classic Identity Management registration processes can be replaced. We start off by giving a simple overview of blockchain based SSI, introducing an architecture overview as well as relevant actors in such a system. We further distinguish two major approaches, namely the Identifier Registry Model and its extension the Claim Registry Model. Subsequently we discuss identifiers in such a system, presenting past research in the area and current approaches in SSI in the context of Zooko’s Triangle. As the user of an SSI has to be linked with his digital identifier we also discuss authentication solutions. Most central to the concept of an SSI are the verifiable claims that are presented to relying parties. Resources in the field are only loosely connected. We will provide a more coherent view of verifiable claims in regards to blockchain based SSI and clarify differences in the used terminology. Storage solutions for the verifiable claims, both on- and off-chain, are presented with their advantages and disadvantages.