Cryptology ePrint Archive: Report 2013/250

Fully Homomorphic Encryption for Mathematicians

Alice Silverberg

Abstract: We give an introduction to Fully Homomorphic Encryption for mathematicians. Fully Homomorphic Encryption allows untrusted parties to take encrypted data Enc(m_1),...,Enc(m_t) and any efficiently computable function f, and compute an encryption of f(m_1,...,m_t), without knowing or learning the decryption key or the raw data m_1,...,m_t. The problem of how to do this was recently solved by Craig Gentry, using ideas from algebraic number theory and the geometry of numbers. In this paper we discuss some of the history and background, give examples of Fully Homomorphic Encryption schemes, and discuss the hard mathematical problems on which the cryptographic security is based.

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Publication Info: To appear in the WIN2 Proceedings.

Date: received 1 May 2013, last revised 22 May 2013

Contact author: asilverb at uci edu

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Version: 20130522:153352 (All versions of this report)

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