Titlebook: Advances in Cryptology - CRYPTO 2007; 27th Annual Internat Alfred Menezes Conference proceedings 2007 Springer-Verlag Berlin Heidelberg 200

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https://doi.org/10.1007/978-1-0716-2417-3rage-provider should provide for Alice the ability to collect, retrieve, search and delete emails but, at the same time, should learn neither the content of messages sent from the senders to Alice (with Bob as an intermediary), nor the search criteria used by Alice. A trivial solution is that messag