Liberated from LiveJournal :-):

Title: Fully Homomorphic Encryption Using Ideal Lattices Speaker: Craig Gentry, Stanford University Time/Place: 11 am, 18 March, Wozniak Lounge [Ed. note: 4th floor, Soda Hall, UC Berkeley]

Abstract: We propose a fully homomorphic encryption scheme -- i.e., a scheme that allows one to evaluate circuits over encrypted data without access to the decryption function. First, we provide a general preliminary result -- that, to construct an encryption scheme that permits evaluation of arbitrary circuits, it suffices to construct an encryption scheme that can evaluate (slightly augmented versions of) its own decryption circuit; we call such a scheme bootstrappable. Next, we provide a bootstrappable public key encryption scheme using ideal lattices.

Cheers, RAH