Homomorphic Subtraction Is So Much More Useful Than Homomorphic Addition? Here’s Paillier Subtraction
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3 min readDec 22, 2021
Paillier addition is fairly straight forward, and where we multiply the ciphers, but the subtraction operation can be a little sticky. Overall finding delta (V_1-V_2) is probably more useful in homomorphic encryption than adding as we often look for differences in locations or for time stamps. The delta between two…
