2003 | OriginalPaper | Buchkapitel
A Simpler Construction of CCA2-Secure Public-Key Encryption under General Assumptions
verfasst von : Yehuda Lindell
Erschienen in: Advances in Cryptology — EUROCRYPT 2003
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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In this paper we present a simpler construction of a public-key encryption scheme that achieves adaptive chosen ciphertext security (CCA2), assuming the existence of trapdoor permutations. We build on previous works of Sahai and De Santis et al. and construct a scheme that we believe is the easiest to understand to date. In particular, it is only slightly more involved than the Naor-Yung encryption scheme that is secure against passive chosen-ciphertext attacks (CCA1). We stress that the focus of this paper is on simplicity only.