I am the Head of Cryptography at Coinbase and a Professor in the Department of Computer Science at Bar Ilan University (on leave). I received my Ph.D. in 2002 from the Weizmann Institute of Science, under the supervision of Oded Goldreich and Moni Naor, and was a Raviv Postdoctoral fellow in the Cryptographic Research Group at the IBM T.J.Watson Research Center in 2002-2004.
I was the co-founder and CEO of a company called Unbound Security that used secure multiparty computation to protect cryptographic keys and secrets of all types. In January 2022, Unbound Security was acquired by Coinbase.
My main research interests are in the field of cryptography, with a focus on secure multiparty computation (MPC).
My research concentrates both on questions of feasibility and efficiency, as well as practical implementations. Research on feasibility asks what cryptographic tasks can be realized and under what assumptions, and is related to the theoretical foundations of cryptography. Research on efficiency focus on the construction of efficient cryptographic schemes and protocols that have rigorous proofs of security and correctness. Today, MPC has transitioned from a theoretical notion to a tool that is used commercially. My research on practical implementations studies the use of MPC (and cryptography in general) to solve current business needs.
For those wanting to learn more about MPC, I have prepared a page with resources on how to get started with studying secure multiparty computation (MPC).
I am also one of the co-inventors of the AES-GCM-SIV mode of operation; information can be found here.
select publications:
select Videos:
(Webpages for courses)
Chapman and Hall/CRC Press, December 2020.
The preface and table of contents is available for perusal. More details on the book, including errata and book reviews, can be found here.
Series on Information Security and Cryptography, Springer, 2017.
See Amazon for purchase information.
Go here for online access.
Chapman and Hall/CRC Press, November 2014.
The preface and table of contents is available for perusal. More details on the book, including errata and book reviews, can be found here.
Lecture Notes in Computer Science, Volume 8349, Springer, 2014.
Go here for online access.
The preface, table of contents and introduction are available for perusal. More details on the book (including errata) can be found here, and a review of the book that appeared in SIGACT NEWS can be found here.
See the Springer website or Amazon for purchase information, and go here for online access.
Chapman and Hall/CRC Press, August 2007.
The preface, table of contents and index and introduction are available for perusal. More details on the book, including errata and book reviews, can be found here. A solutions manual, containing solutions to all of the exercises in the book, can be obtained directly from the publisher by any instructor who adopts the book.
See CRC and Amazon for purchase information, and download the promotional flyer.
Lecture Notes in Computer Science, Volume 2815, Springer-Verlag, 2003.
More details can be found here.
See purchase information and online access.
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