In this talk I will present an approach to achieve split-view protection in centralised transparency log. The technique relies on a few cryptographic building blocks (digital signatures and verifiable random function) and is provably secure against 1/3 corrupted active users, in settings where all communication goes via the transparency log. This is the case of the original design of messaging apps, and may be relevant to other centralised services. For further details, see https://eprint.iacr.org/2024/879
Speaker
Elena Pagnin is an Assistant Professor (Tenure-Track) at the Computer Science and Engineering department at Chalmers University in Göteborg, where she is head of the Cryptoteam and part of the Security & Privacy Lab. Her research focuses on the design of advanced public key cryptographic primitives and new cryptographic protocols, mainly for authentication or transparency. She has been involved in various research projects, including a prestigious VR Starting Grant on Progressive Verification of Cryptographic Schemes. For further details, visit https://epagnin.github.io/
