Most of our lives are conducted in the cyberspace. The human notion of privacy translates
into a cyber notion of privacy on many functions that take place in the cyberspace. This …

Information-theoretic formulations of the private information retrieval (PIR) problem have
been investigated under a variety of scenarios. Symmetric private information retrieval …

Private information retrieval (PIR) protocols ensure that a user can download a file from a
database without revealing any information on the identity of the requested file to the servers …

We study the private information retrieval (PIR) problem under arbitrary collusion patterns for
replicated databases. We find a general characterization of the PIR capacity, which is the …

We study the problem of weakly private information retrieval (W-PIR), where a user wishes to
retrieve a desired message from N non-colluding servers in a way that the privacy leakage …

Private information retrieval protocols guarantee that a user can privately and losslessly
retrieve a single file from a database stored across multiple servers. In this work, we propose …

In the private information retrieval (PIR) problem, a user wants to retrieve a file from a
database without revealing any information about the desired file's identity to the servers that …

We formulate a new variant of the private information retrieval (PIR) problem where the user
is pliable, ie, interested in any message from a desired subset of the available dataset …

Lawful Interception (LI) is a legal obligation of Communication Service Providers (CSPs) to
provide interception capabilities to Law Enforcement Agencies (LEAs) in order to gain …

The problem of weakly-private information retrieval (WPIR) is to allow the user to retrieve
one out of K messages from a set of N distributed servers while guaranteeing that the …