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EUROCRYPT
2011
Springer

Implementing Gentry's Fully-Homomorphic Encryption Scheme

7 years 10 months ago
Implementing Gentry's Fully-Homomorphic Encryption Scheme
We describe a working implementation of a variant of Gentry’s fully homomorphic encryption scheme (STOC 2009), similar to the variant used in an earlier implementation effort by Smart and Vercauteren (PKC 2010). Smart and Vercauteren implemented the underlying “somewhat homomorphic” scheme, but were not able to implement the bootstrapping functionality that is needed to get the complete scheme to work. We show a number of optimizations that allow us to implement all aspects of the scheme, including the bootstrapping functionality. Our main optimization is a key-generation method for the underlying somewhat homomorphic encryption, that does not require full polynomial inversion. This reduces the asymptotic complexity from ˜O(n2.5
Craig Gentry, Shai Halevi
Added 28 Aug 2011
Updated 28 Aug 2011
Type Journal
Year 2011
Where EUROCRYPT
Authors Craig Gentry, Shai Halevi
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