On the Security of a Modified Paillier Public-Key Primitive

Abstract

Choi et al. proposed the modified Paillier cryptosystem (M-Paillier cryptosystem). They use a special public-key g ∈ ZZ/nZZ such that gφ(n) = 1 + n mod n2, where n is the RSA modulus. The distribution of the public key g is different from that of the original one. In this paper, we study the security of the usage of the public key. Firstly, we prove that… (More)
DOI: 10.1007/3-540-45450-0_33

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