A Simpler Construction of CCA2-Secure Public-Key
Encryption under General Assumptions |
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Authors: | Yehuda Lindell |
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Affiliation: | (1) Department of Computer Science, Bar-Ilan University, Ramat Gan 52900, Israel |
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Abstract: | 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. |
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Keywords: | Public-key encryption Adaptive chosen-ciphertext attacks Simulation-sound non-interactive zero-knowledge |
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