Algebraic Coding and Cryptography
ACCESS is a joint effort designed to highlight world-class research in coding theory, cryptography, and related areas and to encourage collaboration among its participants.
Toward the capacity of private information retrieval from coded and colluding servers
Abstract. Private information retrieval (PIR) addresses the question of how to retrieve data items from a database or cloud without disclosing information about the identity of the data items retrieved. The area has received renewed attention in the context of PIR from coded storage. Here, the files are distributed over the servers according to a storage code instead of mere replication. Alongside with the basic principles of PIR, we will review recent capacity results and demonstrate the usefulness of the so-called star product PIR scheme.
The talk is based on joint work with Ragnar Freij-Hollanti, Oliver Gnilke, Lukas Holzbaur, David Karpuk, and Jie Li.
Biography. Camilla Hollanti received the M.Sc. and Ph.D. degrees from the University of Turku, Finland, in 2003 and 2009, respectively, both in pure mathematics. Since 2011, she has been with the Department of Mathematics and Systems Analysis, Aalto University, Finland, where she currently works as a full professor and leads a research group in Algebra, Number Theory, and Applications. From 2017 to 2020, she was affiliated with the Institute of Advanced Studies, Technical University of Munich, where she held a Hans Fischer Fellowship. Her research interests lie within applications of algebraic number theory to wireless communications and physical layer security as well as in combinatorial and coding theoretic methods related to secure and private computation.
Dr. Hollanti is a coauthor of over a hundred scientific peer-reviewed publications and is a recipient of several grants, including seven Academy of Finland Grants. In 2014, she received the World Cultural Council Special Recognition Award for young researchers. In 2017, the Finnish Academy of Science and Letters awarded her the Väisälä Prize in Mathematics. Since 2020, she has been serving as a member of the Board of Governors of the IEEE Information Theory Society, and she was a general chair of the IEEE ISIT 2022. She is currently an Editor of the SIAM Journal on Applied Algebra and Geometry, IEEE Transactions on Information Theory, and Annales Fennici Mathematici.