Time+Place: Sunday 04/01/2015 12:00 Room 337-8 Taub Bld.
Title: Thinking out of the Encryption Box
Speaker: Itai Dinur - CS-Lecture - NOTE UNUSUAL TIME http://www.di.ens.fr/~dinur/
Affiliation: Cryptography Group, Ecole Normale Superieure, Paris
Host: Eli Biham


Block ciphers are the main tool used today to protect sensitive data. They
are typically constructed by combining several simpler components in order
to provide the highest possible level of security. In this talk I will
consider these components as black boxes, and analyze the security of the
overall structure while ignoring the low-level details of each black box.
More specifically, I will describe new attacks that break three classical
block cipher constructions more efficiently than all the previously found
attacks. Interestingly, some of the new techniques can also be used to solve
certain well known algorithmic problems which have nothing to do with

The talk will require no prior knowledge in cryptography.

Short Bio:
Itai Dinur is a postdoctoral researcher in the cryptography group at the
Ecole Normale Superieure, Paris. He obtained his BSc in Computer Science
from the Technion in 2004, and subsequently jointed IBM, Haifa as a software
engineer. In 2007, Itai became a graduate student under supervision of Prof.
Adi Shamir at the Weizmann Institute, and received his PhD degree in 2013.
His main research interests are cryptography and computer security.