Hong-Sheng Zhou
Assistant Professor
Cryptography
Lab | Lab-B
Department
of Computer Science
Virginia Commonwealth University
East Hall, Room E4240
401 West Main Street
P.O. Box 843019
Richmond, Virginia 23284-3019
Email: hongsheng.zhou (at) gmail.com
I am an Assistant Professor in the Computer Science Department at
Virginia Commonwealth University.
From 2010-2013, I was a postdoc at the University of Maryland, under
the direction of Jonathan
Katz. In 2010, I received my PhD at the University of
Connecticut with Aggelos
Kiayias as advisor.
My research interests include: Cryptography; Cryptocurrency/Blockchain
Technologies; Information Security; Distributed Computing.
A project
ongoing.
Teaching
See Blackboard for course
materials
- Fall 2018: Introduction to Cryptography (CMSC 415)
(meeting MW 2:00-3:15pm, at Room E1232, East Hall; office hours
MW 3:30-4:30pm, at Room E4240)
- Spring 2018: Cryptocurrency and Blockchain Techniques (CMSC
615)
- Fall 2017: Introduction to Cryptography (CMSC 415)
- Spring 2017: Cryptocurrency and Blockchain Techniques (CMSC
691/615)
- Fall 2016: Introduction to Cryptography (CMSC 415)
- Spring 2016: Introduction to Cryptography (CMSC 415)
- Spring 2016: Algorithms (CMSC 401)
- Fall 2015: Applied Cryptography (CMSC 620)
- Spring 2015: Introduction to Cryptography (CMSC 491/415)
- Fall 2014: Applied Cryptography (CMSC 620)
- Fall 2013: Applied Cryptography (CMSC 620)
Students/ Long-term Visitors
- Phuc Thai (PhD student, co-advised with Prof Thang Dinh,
Fall 2018 -- )
- Shuang Hu (visiting PhD student from Shanghai Jiao Tong
University, Fall 2017 -- )
Alumni:
- Tuyet Duong (PhD student, completed Summer 2018)
- Lei Fan (visiting professor from Shanghai Jiao Tong
University, Summer 2015 -- Summer 2016)
- Thomas Veale (Graduate student, Fall 2015 -- Fall 2016)
- Aidan Collins (Masters student, Spring 2016 -- Fall
2016)
- Zengpeng Li (visiting PhD student from Harbin Engineering
University, Fall 2016 -- Fall 2017)
Research
Cryptography
Lab and Blockchain
Lab
a
complete list of research papers can be found here
or via my DBLP
page
Cryptocurrency
and Blockchain Technologies
- Cryptographic Foundations of Blockchains
Tutorial in summer school on Blockchain Technologies,
Beijing, Aug 14-18, 2017
Slides
available
- Alternative Consensus: Rethinking Bitcoin-like Consensus
Design
Tutorial in winter school on Cryptocurrency and Blockchain
Technologies, Shanghai, Jan 15-17, 2017
Slides
available
- New Securing
Proof-of-Space based Blockchain against Strong Adversaries
Phuc Thai, Hong-Sheng Zhou
Manuscript
- 2-hop Blockchain: Combining Proof-of-Work and Proof-of-Stake
Securely
Tuyet Duong, Lei Fan, Jonathan Katz, Phuc Thai, Hong-Sheng Zhou
Please see our TwinsCoin
project for implementation.
Latest version available from the authors.
Preliminary version available
at ePrint server.
- TwinsCoin: A
Cryptocurrency via Proof-of-Work and Proof-of-Stake
Alexander Chepurnoy, Tuyet Duong, Lei Fan, Hong-Sheng Zhou
BCC 2018 -- The
Second ACM Workshop on Blockchain, Cryptocurrencies and
Contracts
Source
code available
- Multi-mode
Cryptocurrency Systems
Tuyet Duong, Hong-Sheng Zhou, Alexander Chepurnoy
BCC 2018 -- The
Second ACM Workshop on Blockchain, Cryptocurrencies and
Contracts
Source code
available
- New A Large-Scale
Proof-of-Stake Blockchain in the Open Setting (or, How to Mimic
Nakamoto's Design via Proof-of-Stake)
Lei Fan, Jonathan Katz, Hong-Sheng Zhou
Note: This is one of the first provably secure
and scalable public blockchain using
proof-of-stake only. The design is
extremely simple and truly efficient.
Updated version available from the authors. Preliminary
version available
at ePrint server.
-
Brief
announcement: Statement Voting and Liquid Democracy
Bingsheng Zhang, Hong-Sheng Zhou
PODC 2017 -- ACM Symposium on Principles of Distributed
Computing
Presentation slides
at PODC 2017
Full version in submission: Statement Voting
- Designing Proof of
Human-work Puzzles for Cryptocurrency and Beyond
Jeremiah Blocki, Hong-Sheng Zhou
TCC 2016B --
Theory of Cryptography Conference
- Fair and Robust
Multi-Party Computation using a Global Transaction Ledger
Aggelos Kiayias, Hong-Sheng Zhou, Vassilis Zikas
EUROCRYPT 2016
-- Advances in Cryptology
my collaborator Vassilis Zikas's tutorial slides
at winter school on Cryptocurrencies
and Blockchain Technologies, 2017
- Adaptively
Secure Broadcast, Revisited
Juan Garay, Jonathan Katz, Ranjit Kumaresan, Hong-Sheng Zhou
PODC 2011 -- ACM Symposium on Principles of Distributed
Computing
Secure Computing (Secure Multi-Party
Computation, Functional Encryption, Verifiable Computing,
etc.)
(secure computing in the extreme
settings can be found below; secure computing for blockchain can
be found above)
- Multi-Input Functional Encryption
Shafi Goldwasser, Dov Gordon, Vipul Goyal, Abhishek Jain,
Jonathan Katz, Feng-Hao Liu, Amit Sahai, Elaine Shi, Hong-Sheng
Zhou
EUROCRYPT 2014 -- Advances in Cryptology
Merge of [GKLSZ]
and [GGJS]
Extreme Cryptography
(Klepto Resilience, Leakage/Tampering Resilience, Coercion
Resilience, Quantum Resilience)
Klepto Resilience
- Cliptography: Post-Snowden Cryptography
Tutorial (by my collaborators Qiang Tang and Moti Yung) at CCS
2017 -- ACM Conference on Computer and Communications Security
- New Let a
Non-Barking Watchdog Bite: Cliptographic Signatures with an
Offline Watchdog
Sherman Chow, Alexander Russell, Qiang Tang, Moti Yung, Yongjun
Zhao, Hong-Sheng Zhou
Manuscript in submission
- New Correcting
Subverted Random Oracles
Alexander Russell, Qiang Tang, Moti Yung, Hong-Sheng Zhou
CRYPTO 2018 -- Advances in Cryptology
- Secure Computation against Kleptographic Attacks
Tuyet Duong, Alexander Russell, Qiang Tang, Hong-Sheng Zhou
Manuscript
- Generic Semantic
Security against a Kleptographic Adversary
Alexander Russell, Qiang Tang, Moti Yung, Hong-Sheng Zhou
CCS 2017 -- ACM Conference on Computer and Communications
Security
Seminar talk slides
- Cliptography:
Clipping the Power of Kleptographic Attacks
Alexander Russell, Qiang Tang, Moti Yung, Hong-Sheng Zhou
ASIACRYPT 2016 --
Advances in Cryptology
Qiang Tang's talk
video at ASIACRYPT 2016
Oral presentation at SAT 2015 -- Workshop on Surveillance and
Technology
Invited to Journal of Cryptology
- Distributing
the Setup in Universally Composable Multi-Party Computation
Jonathan Katz, Aggelos Kiayias, Hong-Sheng Zhou, Vassilis
Zikas
PODC 2014 -- ACM Symposium on Principles of Distributed
Computing
Leakage/Tampering Resilience
Coercion Resilience
Quantum Resilience
Miscellaneous
- Hidden
Identity-Based Signatures
Aggelos Kiayias, Hong-Sheng Zhou
FC 2007 -- Financial Cryptography and Data Security
Journal version in IET Information Security, 3(3), pages
119-127, September 2009
Professional Activities
Organizer
- Winter school on Secure
Multi-Party Computation, Zhejiang University, Nov 15, 2018
(with Bingsheng
Zhang)
- Winter school on Cryptocurrencies
and Blockchain Technologies, Shanghai Jiao Tong
University, Jan 15-17, 2017 (with Jonathan Katz and Dawu
Gu)
- BlockSEA 2018, the first
workshop on Blockchain and Sharing Economy Applications,
Singapore, Nov 17, 2018 (with Sherman Chow
and Thang Dinh)
- DLoT 2018, the first workshop on Distributed
Ledger of Things, Columbia University, New York
city, Nov 5, 2018 (with Shucheng Yu
and Xuan
Zhang)
Program Committees
- Theory of Cryptography Conference -- TCC 2017
- Financial Cryptography and Data Security -- FC 2017
- International Conference on Cryptology and Network Security
-- CANS 2009, 2014, 2017
- International Symposium on Stabilization, Safety, and Security
of Distributed Systems -- SSS 2015, 2017
- Conference on Security and Cryptography for Networks -- SCN 2016
- International Computing and Combinations Conference -- COCOON 2016
- ASIACRYPT 2010, 2014
- ACM Asia Public-Key Cryptography Workshop -- AsiaPKC 2013
- International Workshop on Security in Cloud Computing 2013
- International Conference on Information Security and
Cryptology -- Inscrypt 2012, 2013, 2014, 2016, 2017
Local Research Activities
Semi-Random Links