# CKKS plaintext message According [[@Homomorphic Encryption for Arithmetic of Approximate Numbers]] page 9 - the plaintext message $m$ belongs to $\mathbb{Z}[X]/(\Phi_m(X))$ but it should be the result of the decryption procedure which is computed modulo $q_0$. Therefore the plaintext message must have coefficients smaller than $q_0$ to be decryptable in CKKS. ## Created 2022-11-21 10:40