Crypto-systems based on polynomial rings with two cyclotomic-cosets [1] have been proven for concise and rapid in implementation. However, deep analysis on security of the systems has not been considered. In this paper, cryptanalysis of public key in crypto-system based on polynomial rings with 2 cyclotomic-cosets is thoroughly presented. From the analysis results, selection of parameters of this crypto-system is also shown. | Cryptanalysis of public key in crypto-system based on polynomial rings with 2 cyclotomic-cosets
