Private Information Retrieval under Multi-server Environment
Lili Xu · Information Security and Communications Privacy · 2011
Private information retrieval(PIR) is a strategy to protect individual privacy on the public network platform and prevent database from knowing user's query information.The formerly proposed PIR schemes and their merits and demerits are studied and analyzed,and a feasible PIR model in considering various safeties is explored.With these,Shamir secret-sharing protocol,multiplication homomorphism encryption and other technologies are employed,and a proper PIR scheme based on multiple servers is designed in consideration of the current complicated network environment and hostile attack to user's query information.