Shai Halevi ( he, שי הלוי; born 1966) is a computer scientist who works on
cryptography
Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adver ...
research at Algorand Foundation, a
blockchain startup founded by
Silvio Micali
Silvio Micali (born October 13, 1954) is an Italian computer scientist, professor at the Massachusetts Institute of Technology and the founder of Algorand. Micali's research centers on cryptography and information security.
In 2012, he received ...
.
Born in
Israel
Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
in 1966, Halevi received a B.A. and M.Sc. in computer science from the
Technion, Israel Institute of Technology in 1991 and 1993. He received his Ph.D. in computer science from MIT in 1997, and then joined
IBM's
Thomas J. Watson Research Center
The Thomas J. Watson Research Center is the headquarters for IBM Research. The center comprises three sites, with its main laboratory in Yorktown Heights, New York, U.S., 38 miles (61 km) north of New York City, Albany, New York and wit ...
, where he was a principal research staff member until 2019. Since 2019, he has been a research fellow at Algorand Foundation.
Research
Shai Halevi's research interests are in cryptography and security. He has published numerous original technical research papers, three of which were awarded the IBM Pat Goldberg memorial best-paper award (in 2004, 2012, and 2013).
Notable contributions by Shai Halevi include:
* Obfuscation. Halevi is a co-inventor of the first candidate general-purpose
indistinguishability obfuscation
In cryptography, indistinguishability obfuscation (abbreviated IO or iO) is a type of software obfuscation with the defining property that obfuscating any two programs that compute the same mathematical function results in programs that cannot b ...
schemes, with security based on a mathematical conjecture.
[
] This development generated much interest in the cryptography community and was called "a watershed moment for cryptography."
* Cryptographic Multilinear Maps. Halevi is a co-inventor of Cryptographic Multilinear Maps (which constitute the main technical tool behind cryptographic obfuscation and many other applications), solving a long-standing open problem
[Sanjam Garg, Craig Gentry, and Shai Halevi]
Candidate Multilinear Maps from Ideal Lattices
In ''EUROCRYPT 2013'' (Springer)
* Homomorphic Encryption. Halevi is one of the leading researchers on
homomorphic encryption
Homomorphic encryption is a form of encryption that permits users to perform computations on its encrypted data without first decrypting it. These resulting computations are left in an encrypted form which, when decrypted, result in an identical ...
. He authored many articles,
[M. van Dijk, C. Gentry, S. Halevi, and V. Vaikuntanathan]
Fully Homomorphic Encryption over the Integers
In ''EUROCRYPT 2010'' (Springer)
[C. Gentry and S. Halevi]
Implementing Gentry's fully-homomorphic encryption scheme
In ''EUROCRYPT 2011'' (Springer)
[C. Gentry and S. Halevi]
Fully Homomorphic Encryption without Squashing Using Depth-3 Arithmetic Circuits
In ''FOCS 2011'' (IEEE)
[C. Gentry, S. Halevi, and N. P. Smart]
Fully Homomorphic Encryption with Polylog Overhead
In ''EUROCRYPT 2012'' (Springer)
[C. Gentry, S. Halevi, and N. P. Smart]
Better Bootstrapping in Fully Homomorphic Encryption
In ''PKC 2012'' (Springer)
[C. Gentry, S. Halevi, and N. P. Smart]
Homomorphic Evaluation of the AES Circuit
In ''CRYPTO 2012'' (Springer)
gave invited lectures and tutorials on the topic,
[Fully Homomorphic Encryption]
Tutorial in the Winter School on Secure Computation and Efficiency, Bar-Ilan University, 2011.[Fully Homomorphic Encryption]
Tutorial in CRYPTO 2011, UC Santa-Barbara[Fully Homomorphic Encryption]
Invited lecture at the UCI Workshop on Lattices with Symmetry
and he is also the principal developer (together with
Victor Shoup
Victor Shoup is a computer scientist and mathematician. He obtained a PhD in computer science from the University of Wisconsin–Madison in 1989, and he did his undergraduate work at the University of Wisconsin-Eau Claire. He is a professor at ...
) of the
HElib homormophic-encryption software library.
[
][S. Halevi and V. Shoup]
Algorithms in HElib
In ''CRYPTO 2014''
[S. Halevi and V. Shoup]
Bootstrapping for HElib
In ''Cryptology ePrint Archive''
* The Random Oracle Model. Halevi co-authored the influential work that pointed out for the first time the existence of "structurally flawed" cryptosystems that nonetheless have a proof of security in the
random-oracle model.
Since 2013 Halevi is the chair of the steering committee of the
Theory of Cryptography Conference. He served on the board of directors of the
International Association for Cryptologic Research
International is an adjective (also used as a noun) meaning "between nations".
International may also refer to:
Music Albums
* ''International'' (Kevin Michael album), 2011
* ''International'' (New Order album), 2002
* ''International'' (The T ...
.
He chaired the
CRYPTO conference in 2009 and co-chaired the
TCC conference in 2006. Halevi also gave many invited talks, including in the
USENIX Security Symposium in 2008 and the
PKC conference in 2014.
Software
Halevi maintains two open-source software projects: The HElib homomorphic-encryption library, and a web-system for submission/review of articles to academic conferences
References
External links
Shai Halevi's Home PageThe Cryptography Research Group at the IBM T.J.Watson Research Center
{{DEFAULTSORT:Halevi, Shai
Israeli computer scientists
Theoretical computer scientists
Modern cryptographers
Public-key cryptographers
Living people
Israeli cryptographers
1966 births
MIT School of Engineering alumni
Technion – Israel Institute of Technology alumni
IBM employees