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 />
� For ciphertext c, consider D c(sk) = Decrypt sk(c)<br />
� Suppose D c(·) is a low-depth polynomial in sk.<br />
� Include in the public key also Encpk(sk).<br />
sk1 sk 2<br />
…<br />
sk n<br />
c<br />
y<br />
D c<br />
c’<br />
D c(sk) = Decrypt sk(c) = y