Ran Cohen
Principal Research Scientist
Email:
rancohen@ccs.neu.edu
I am a principal research scientist at the
Khoury College of Computer Sciences
at
Northeastern University
.
Prior to that, I spent two great years as a post-doctoral researcher in the Boston area, working with
Shafi Goldwasser
at
MIT CSAIL
, with
abhi shelat
at
Northeastern University
, and with
Ran Canetti
at
Boston University
, and one year at
Tel Aviv University
working with
Iftach Haitner
.
I completed my Ph.D. in 2016 working at the
Cryptography Research Group
at
Bar-Ilan University
, where I was very fortunate to have
Yehuda Lindell
as my advisor.
I received my M.Sc. from the
Department of Mathematics
at
Bar-Ilan University
under the supervision of
Boris Kunyavskii
.
My research interests are in
cryptography and distributed computing, with a focus on secure multiparty computation
.
Program Committees
PODC 2020
- The 39th ACM Symposium on Principles of Distributed Computing
Eurocrypt 2020
- The 39th Annual International Conference on the Theory and Applications of Cryptographic Techniques
TCC 2019
- The 17th Theory of Cryptography Conference
Publications
(see
dblp
)
Succinctly Reconstructed Distributed Signatures and Balanced Byzantine Agreement
Elette Boyle
, Ran Cohen, and
Aarushi Goel
Manuscript 2020
Preliminary full version [
eprint
] [
arxiv
]
Broadcast-Optimal Two-Round MPC
Ran Cohen,
Juan Garay
, and
Vassilis Zikas
Advances in Cryptology -
EUROCRYPT 2020
(to appear)
Preliminary full version [
eprint
]
Is Information-Theoretic Topology-Hiding Computation Possible?
Marshall Ball
,
Elette Boyle
, Ran Cohen,
Tal Malkin
, and
Tal Moran
Theory of Cryptography Conference -
TCC 2019
[
link
]
Preliminary full version [
eprint
]
On the Round Complexity of Randomized Byzantine Agreement
Ran Cohen,
Iftach Haitner
, Nikolaos Makriyannis, Matan Orland, and
Alex Samorodnitsky
International Symposium on Distributed Computing -
DISC 2019
[
link
]
Preliminary full version [
eprint
] [
arxiv
]
Adaptively Secure MPC with Sublinear Communication Complexity
Ran Cohen,
abhi shelat
, and
Daniel Wichs
Advances in Cryptology -
CRYPTO 2019
[
link
]
Preliminary full version [
eprint
]
Must the Communication Graph of MPC Protocols be an Expander?
Elette Boyle
, Ran Cohen,
Deepesh Data
, and
Pavel Hubacek
Advances in Cryptology -
CRYPTO 2018
[
link
]
Preliminary full version [
eprint
]
[
slides
] [
video
]
From Fairness to Full Security in Multiparty Computation
Ran Cohen,
Iftach Haitner
,
Eran Omri
, and Lior Rotem
Security and Cryptography for Networks -
SCN 2018
[
link
]
Preliminary full version [
eprint
]
[
slides
]
Round-Preserving Parallel Composition of Probabilistic-Termination Cryptographic Protocols
Ran Cohen,
Sandro Coretti
,
Juan Garay
, and
Vassilis Zikas
International Colloquium on Automata, Languages, and Programming -
ICALP 2017
[
link
]
Preliminary full version [
eprint
]
[
slides
]
Probabilistic Termination and Composability of Cryptographic Protocols
Ran Cohen,
Sandro Coretti
,
Juan Garay
, and
Vassilis Zikas
Journal of Cryptology, 2019
[link]
Advances in Cryptology -
CRYPTO 2016
[
link
]
Full version [
eprint
]
[
slides
] [
video
]
Asynchronous Secure Multiparty Computation in Constant Time
Ran Cohen
Public-Key Cryptography -
PKC 2016
[
link
]
Preliminary full version [
eprint
]
[
slides
]
Characterization of Secure Multiparty Computation Without Broadcast
Ran Cohen,
Iftach Haitner
,
Eran Omri
, and Lior Rotem
Journal of Cryptology, 2018
[link]
Theory of Cryptography Conference -
TCC 2016-A
[
link
]
Full version [
eprint
]
[
slides
] [
video
]
On Adaptively Secure Multiparty Computation with a Short CRS
Ran Cohen and
Chris Peikert
Security and Cryptography for Networks -
SCN 2016
[
link
]
Preliminary full version
[eprint]
[
slides
]
Fairness versus Guaranteed Output Delivery in Secure Multiparty Computation
Ran Cohen and
Yehuda Lindell
Journal of Cryptology, 2017
[link]
Advances in Cryptology -
ASIACRYPT 2014
[
link
]
Full version [
eprint
]
[
slides
]
Group Law Algorithms for Jacobian Varieties of Curves over Finite Fields
Ran Cohen
Algebraic Geometry and Its Applications, volume 5 of Number Theory and its Applications, 2008 [
link
]
Preliminary full version [
PDF
]
Ph.D. Thesis
Studies on Full Security in Multiparty Computation
Ran Cohen
Ph.D. Dissertation, Bar-Ilan University, 2017 [
PDF
]
Teaching
Seminar on Secure Multi-Party Computation
(with
Iftach Haitner
), Tel Aviv University, 2017, [
link
]
Discrete Mathematics
, Bar-Ilan University, 2011-2016 (teaching assistant)
Volunteered at the
program for talented youth in mathematics
, Bar-Ilan University, 2015
