论文信息 - A note on an IND-CCA2 secure Paillier-based cryptosystem

A note on an IND-CCA2 secure Paillier-based cryptosystem

Recently an IND-CCA2 secure Paillier-based cryptosystem has been proposed (Das and Adhikari, 2012 [1]). In this note we show that Das and Adhikari do not present any original result: their scheme is a rewriting of the well-known Fujisaki-Okamoto IND-CPA to IND-CCA2 transformation applied to the Paillier scheme.

David Galindo

[1] Tatsuaki Okamoto,et al. How to Enhance the Security of Public-Key Encryption at Minimum Cost , 1999, Public Key Cryptography.

[2] Avishek Adhikari,et al. An efficient IND-CCA2 secure Paillier-based cryptosystem , 2012, Inf. Process. Lett..

[3] Pascal Paillier,et al. Public-Key Cryptosystems Based on Composite Degree Residuosity Classes , 1999, EUROCRYPT.