3 ms·
Would it be possible to add random low order bits to prevent that? E.g instead of doing 7 * 9 you do 7.00024378 * 9.00003891
by im3w1l 6y ago
Would it be possible to add random low order bits to prevent that? E.g instead of doing 7 * 9 you do 7.00024378 * 9.00003891
- bawolff 6y agoFHE involves adding random noise pretty constantly (FHE kind of works by adding noise at every step, and regulary does a magic encrypted re-encryption step where during evaluation the intermediate values are reencrypted without ever revealing the original value, to get rid of the excess noise). Anyways, FHE is secure against (non-adaptive) chosen plaintext attacks. That among other things means that if E is the encryption function, E(7) != E(7), and if you have E(x) and E(y) you cant tell if x and y are related to each other unless you have access to the decryption function.