Abstract
In EUROCRYPT’12, Hohenberger, Lewko, and Waters proposed a new paradigm for constructing chosen ciphertext secure public key encryption (PKE) schemes from a new concept of detectable PKE. In this paper, we propose an efficient variant of the Hohenberger-Lewko-Waters (HLW) construction, based on the techniques and results from hybrid encryption. On the technical side, our security proof avoids using the notion of nested-indistinguishability that was used in the original proof by Hohenberger et al., and we believe that what role each building block plays is clearer, leading to better understanding of the HLW paradigm.
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Matsuda, T., Hanaoka, G. (2013). Achieving Chosen Ciphertext Security from Detectable Public Key Encryption Efficiently via Hybrid Encryption. In: Sakiyama, K., Terada, M. (eds) Advances in Information and Computer Security. IWSEC 2013. Lecture Notes in Computer Science, vol 8231. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41383-4_15
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DOI: https://doi.org/10.1007/978-3-642-41383-4_15
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