Title: Recent Developments in Identity Based Encryption: Lattices and Beyond Speaker: Dan Boneh, Stanford University Time and Place: November 17 (wednesday), 11am, room 312 Abstract We present new directions for constructing identity based encryption systems from hard problems on lattices. Recall that in an Identity Based encryption (IBE) system any string can function as a public key. IBE systems imply CCA-secure encryption, searching on encrypted data, secure signatures, and many other cryptographic primitives. Until recently all constructions were based on groups with a bilinear map or on the quadratic residousity assumption. Recently, starting with the work of Gentry, Peikert, and Vaikuntanathan, there has been some interest in constructing IBE systems from hard problems on lattices. In this talk will describe a number of new IBE constructions and related primitives from lattice problems. This is joint work with Shweta Agrawal and Xavier Boyen.