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Encryption is the process of transforming plaintext using a cipher into ciphertext to make it unreadable to anyone except those possessing the key. Decryption is the process of transforming that ciphertext back into plaintext, using the key.

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How to compute the absolute value of a float number using only addition and multiplication (...

Hi I am trying to calculate the abs or a float number $x$, however, I want to apply this operation when $x$ is under fully homomorphic encryption (typically CKKS Scheme). … But to directly adapt the abs operation of the float point to the homomorphic encryption scheme, I can't come up with some arithmetic methods to deal with it. Could any please offer me some help? …
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