Welcome to the resource topic for 2017/421
Title:
Exploring Naccache-Stern Knapsack Encryption
Authors: Éric Brier, Rémi Géraud, David Naccache
Abstract:The Naccache–Stern public-key cryptosystem (NS) relies on the conjectured hardness of the modular multiplicative knapsack problem: Given p,\{v_i\},\prod v_i^{m_i} \bmod p, find the \{m_i\}. Given this scheme’s algebraic structure it is interesting to systematically explore its variants and generalizations. In particular it might be useful to enhance NS with features such as semantic security, re-randomizability or an extension to higher-residues. This paper addresses these questions and proposes several such variants.
ePrint: https://eprint.iacr.org/2017/421
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