Η Λέσχη Κυβερνοασφάλειας του Πανεπιστημίου Μακεδονίας έχει την χαρά και την τιμή να φιλοξενεί την ομιλία της Δρ. Φωτεινής Μπαλδιμτσή την Τρίτη 27/5/2025,  και ώρα 18:00 – 19:00 στο Αμφ. 13 του Πανεπιστημίου Μακεδονίας.

Abstract:
When accessing a service, we often need to present authorization credentials. Anonymous credentials allow users to do so without revealing any information about themselves other than the fact that they are authorized. In this talk we will discuss the cryptographic building blocks needed to build the state-of-the-art anonymous credentials systems and we will present progress on one-shot anonymous tokens: lightweight credentials now being piloted by major Web2 providers such as Google, Facebook, and Apple for privacy-preserving rate-limits and anti-Sybil defenses. Finally, we will introduce zkLogin, which couples familiar Web2 identity providers with blockchain accounts via succinct zero-knowledge proofs, enabling users to authenticate to Web3 applications without exposing keys or personal data.

CV:
Foteini Baldimtsi is an Associate Professor in the Computer Science Department at George Mason University, USA and Research Advisor in the Cryptography team of Mysten Labs/Sui. She received her B.Sc from University of Macedonia, Greece and her Ph.D. from Brown University. She has done research for Boston University, University of Athens, IBM, Microsoft and a16z. Her research interests are in the areas of cryptography, security and data privacy. She focuses on designing provably secure cryptographic schemes for a variety of applications such as privacy preserving identity management and private and scalable blockchain transactions. She is a recipient of an NSF CAREER award as well as Google, IBM and Facebook faculty awards. Her research is funded by NSF, DHS, NSA, CCI, Protocol Labs and the Zcash Foundation.