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Fully Homomorphic Encryption over the Integers with Shorter Public Keys
[chapter]
2011
Lecture Notes in Computer Science
At Eurocrypt 2010 van Dijk et al. described a fully homomorphic encryption scheme over the integers. The main appeal of this scheme (compared to Gentry's) is its conceptual simplicity. This simplicity comes at the expense of a public key size inÕ(λ 10 ) which is too large for any practical system. In this paper we reduce the public key size toÕ(λ 7 ) by encrypting with a quadratic form in the public key elements, instead of a linear form. We prove that the scheme remains semantically secure,
doi:10.1007/978-3-642-22792-9_28
fatcat:zdkmjyttz5h2jdmzbndugvhcfy