# Tag Info

No, or at least, if you can, you have an Extremely Significant result; you've just shown that Paillier is a Fully Homomorphic system, and so it could perform any operation on encrypted data (and in a way that's significantly more efficient than any other known FHE system). Here's why: The $|a - b|$ operation is effectively an $XOR$; if the ciphertexts \$a, ...