Kurosawa, K.; Desmedt, Y.; (2004) A new paradigm of hybrid encryption scheme. In: Franklin, M., (ed.) Advances in Cryptology – CRYPTO 2004: 24th Annual International Cryptology Conference, Santa Barbara, California, USA, August 15-19, 2004. Proceedings. (pp. pp. 426-442). Springer Verlag: Berlin/ Heidelberg, Germany.
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In this paper, we show that a key encapsulation mechanism (KEM) does not have to be IND-CCA secure in the construction of hybrid encryption schemes, as was previously believed. That is, we present a more efficient hybrid encryption scheme than Shoup  by using a KEM which is not necessarily IND-CCA secure. Nevertheless, our scheme is secure in the sense of IND-CCA under the DDH assumption in the standard model. This result is further generalized to universal2 projective hash families.
|Title:||A new paradigm of hybrid encryption scheme|
|Keywords:||Hybrid encryption, KEM, standard model|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science > Adastral Park|
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