2013•IEICE Transactions on Fundamentals of Electronics Communications and Computer SciencesRequires access
On Discrete Logarithm Based Additively Homomorphic Encryption
Jae Hong Seo, Keita Emura
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Abstract
In this paper, we examine additive homomorphic encryptions in the discrete logarithm setting. Recently, Wang et al. proposed an additive homomorphic encryption scheme by modifying the ElGamal encryption scheme [Information Sciences 181(2011) 3308-3322]. We show that their scheme allows only limited number of additions among encrypted messages, which is different from what they claimed.