Moni Naor

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Moni Naor
Born 1961
Citizenship Israeli
Fields Computer Science, Cryptography
Institutions Weizmann Institute of Science
Alma mater Technion
University of California, Berkeley
Doctoral advisor Manuel Blum
Doctoral students

Danny Harnik
Tzvika Hartman
Yehuda Lindell
Kobbi Nissim
Benny Pinkas
Omer Reingold
Alon Rosen
Udi Wieder

Avishai Wool
Notable awards Gödel prize

Moni Naor (Hebrew: מוני נאור‎) is an Israeli computer scientist, currently a professor at the Weizmann Institute of Science. Naor received his Ph.D. in 1989 at the University of California, Berkeley. His advisor was Manuel Blum.

He works in various fields of computer science, mainly the foundations of cryptography. He is notable for initiating research on public key systems secure against chosen ciphertext attack and creating non-malleable cryptography, visual cryptography (with Adi Shamir), and suggesting various methods for verifying that users of a computer system are human (leading to the notion of CAPTCHA).[1] His research on Small-bias sample space, give a general framework for combining small k-wise independent spaces with small \epsilon-biased spaces to obtain \delta-almost k-wise independent spaces of small size.[2] In 1994 he was the first, with Amos Fiat, to formally study the problem of practical broadcast encryption.[3] Along with Benny Chor, Amos Fiat, and Benny Pinkas, he made a contribution to the development of Traitor tracing, a copyright infringement detection system which works by tracing the source of leaked files rather than by direct copy protection.[4]

He was named an IACR fellow in 2008 and received the Gödel Prize 2014.


  1. ^ "Who Made that CAPTCHA". New York Times. Retrieved January 17, 2014. 
  2. ^ Joseph Naor; Moni Naor (1990). "Small-bias Probability Spaces: efficient constructions and Applications". Proceedings of the 22nd annual ACM symposium on Theory of computing, STOC 1990 (abstract): 213–223. 
  3. ^ Amos Fiat; Moni Naor (1994). "Broadcast encryption". Proc. Advances in Cryptology – CRYPTO '93 (Extended abstract). Lecture Notes in Computer Science 773: 480–491. 
  4. ^ Naor, Moni; Benny Chor; Amos Fiat; Benny Pinkas (May 2000). "Tracing Traitors". Information Theory 46 (3): 893–910.