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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Searchable Encryption Revisited: Consistency Properties, Relation to Anonymous IBE, and Extensions
verfasst von : Michel Abdalla, Mihir Bellare, Dario Catalano, Eike Kiltz, Tadayoshi Kohno, Tanja Lange, John Malone-Lee, Gregory Neven, Pascal Paillier, Haixia Shi
Erschienen in: Advances in Cryptology – CRYPTO 2005
Verlag: Springer Berlin Heidelberg
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We identify and fill some gaps with regard to consistency (the extent to which false positives are produced) for public-key encryption with keyword search (PEKS). We define computational and statistical relaxations of the existing notion of perfect consistency, show that the scheme of [7] is computationally consistent, and provide a new scheme that is statistically consistent. We also provide a transform of an anonymous IBE scheme to a secure PEKS scheme that, unlike the previous one, guarantees consistency. Finally we suggest three extensions of the basic notions considered here, namely anonymous HIBE, public-key encryption with temporary keyword search, and identity-based encryption with keyword search.