A conversion theorem shows that information-theoretic PIR schemes with result verification can be upgraded to fully authenticated versions with statistical security against selective failures at no extra cost.
Private information retrieval in the presence of malicious failures
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Information-Theoretic Authenticated PIR: From PIR-RV To APIR
A conversion theorem shows that information-theoretic PIR schemes with result verification can be upgraded to fully authenticated versions with statistical security against selective failures at no extra cost.