FULLY HOMOMORPHIC ENCRYPTION: CURRENT STATE OF THE ...
FULLY HOMOMORPHIC ENCRYPTION: CURRENT STATE OF THE ...
FULLY HOMOMORPHIC ENCRYPTION: CURRENT STATE OF THE ...
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Bootstrapping: What Is It?<br />
� So far, we can evaluate bounded depth funcs F:<br />
F<br />
x1 x2 …<br />
x t<br />
c<br />
F(x 1, x 2 ,…, x t)<br />
� We have a noisy evaluated ciphertext c.<br />
� We want to get a less noisy c’ that encrypts the same<br />
value, but with less noise.<br />
� Bootstrapping refreshes ciphertexts, using the<br />
encrypted secret key.