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
- 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.
Awards and honors