In this talk we shall discuss the meet in the middle technique that was
introduced by Merkle & Hellman in their seminal paper that showed that
Double-DES is not more secure than single DES. Their technique was later used
by Chaum & Evertse to attack reduced-round variants of DES. While being left
out for several years, the technique is recently enjoying a renaissance, and
become an active research field, with application to many block ciphers.

Joint work with Itai Dinur, Nathan Keller, and Adi Shamir