Yiwei Zhang – Private information retrieval in distributed storage systems


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A private information retrieval (PIR) protocol allows a user to retrieve a data item from a database without revealing any information about the identity of the data item to a certain coalition of servers. In this talk, we will go over the recent results on PIR, especially on PIR in MDS-coded databases with colluding servers. We will also mention various other PIR models including PIR with robust/Byzantine servers or PIR with arbitrary collusion patterns.