Orr Dunkelman
Orr Dunkelman is an Israeli cryptographer and cryptanalyst, currently a professor at the University of Haifa Computer Science department. Dunkelman is a co-director of the Center for Cyber Law & Privacy at the University of Haifa and a co-founder of Privacy Israel, an Israeli NGO for promoting privacy in Israel.
Biography
Dunkelman received all his degrees at the Technion - Israel Institute of Technology. He received his Ph.D. degree at the age of 25, under the supervision of Eli Biham. Before joining the University of Haifa, Dunkelman held post-doctoral positions at KU Leuven, at École normale supérieure, and at the Weizmann Institute of Science.Contributions to cryptanalysis
Among his contributions to cryptanalysis are:- Dissection attack – joint work with Itai Dinur, Nathan Keller, and Adi Shamir, recipient of the Best Paper Award at the Crypto 2012 conference.
- Rectangle attack – joint work with Eli Biham and Nathan Keller.
- New variants of differential-linear, boomerang, and slide attacks – joint works with Eli Biham, Adi Shamir, and other co-authors.
- Breaking KeeLoq – a block cipher used in remote keyless entry systems by multiple companies.
- Devising a practical attack on A5/1 – the cipher used in GSM security mechanisms.
- Attacking reduced-round variants of many block ciphers, including AES, Serpent, IDEA, GOST, DES, KASUMI, MISTY1, Camellia, Skipjack and others.
New cryptographic primitives
Dunkelman has taken part in the design of several new cryptographic primitives:- HAIFA construction – a cryptographic structure used in the design of hash functions.
- KATAN and KTANTAN - a family of small and efficient hardware-oriented block ciphers.
- SHAvite-3, a hash function which was one of the 14 semifinalists in the NIST hash function competition.