Giovanni Di

Constant-Round Resettable Zero Knowledge with Concurrent Soundness in the Bare Public-Key Model (2008)

Giovanni Di, Persiano Ivan Visconti

In the bare public-key model (BPK in short), each verifier is assumed to have deposited a public key in a file that is accessible by all users at all times. In this model, introduced by Canetti et...

Single Database Private Information Retrieval Implies Oblivious Transfer (2008)

Giovanni Di, Crescenzo Tal, Malkin Rafail Ostrovsky

A Single-Database Private Information Retrieval (PIR) is a protocol that allows a user to privately retrieve from a database an entry with as small as possible communication complexity. We call a PIR...

Asynchronously and Perfectly Secure (2008)

Giovanni Di, Crescenzo Aggelos Kiayias

The "One-Time Pad" is a fundamental cryptographic protocol as it represents the ideal in secure unidirectional communication (i.e., in cases where there is a designated sender and a...