CKKS – Addition and Multiplication

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Table of Contents This is part of a tutorial series on the CKKS homomorphic encryption scheme. In the last article, we introduced symmetric and public-key encryption and decryption routines, and implemented modular polynomial arithmetic (using NTTs as a black box). This article covers the addition and multiplication operations performed on ciphertexts (without relinearization). Again, if you already know about CKKS,…

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