My name is Steven Goldfeder, and I am an IC3 postdoc at Cornell Tech, where I am co-mentored by Professor Ari Juels and Professor Andrew Miller.

I received my PhD at Princeton University, where I was fortunate to be advised by Professor Arvind Narayanan. At Princeton, I was a member of the Security & Privacy Research Group, a CITP Graduate Student Fellow, and a National Science Foundation Graduate Research Fellow.

My research interests include cryptography, security, and privacy, particularly as they relate to decentralized digital currencies.

I can be reached at goldfeder@cornell.edu.

Bitcoin and Cryptocurrency Technologies
Arvind Narayanan, Joseph Bonneau, Edward Felten, Andrew Miller, Steven Goldfeder.
Princeton University Press, 2016.

BlockSci: Design and applications of a blockchain analysis platform
Harry Kalodner, Malte Möser, Kevin Lee, Steven Goldfeder, Martin Plattner, Alishah Chator, Arvind Narayanan.
USENIX Security, 2020.

One Round Threshold ECDSA with Identifiable Abort
Rosario Gennaro, Steven Goldfeder.
Manuscript, 2020.

Order-Fairness for Byzantine Consensus
Mahimna Kelkar, Fan Zhang, Steven Goldfeder, Ari Juels.
CRYPTO, 2020.

DECO: Liberating Web Data Using Decentralized Oracles for TLS
Fan Zhang, Sai Krishna Deepak Maram, Harjasleen Malvai, Steven Goldfeder, Ari Juels.
ACM Conference on Computer and Communications Security (CCS), 2020.

Flash Boys 2.0: Frontrunning, Transaction Reordering, and Consensus Instability in Decentralized Exchanges
Philip Daian, Steven Goldfeder, Tyler Kell, Yunqi Li, Xueyuan Zhao, Iddo Bentov, Lorenz Breidenbach, Ari Juels.
IEEE Security and Privacy (Oakland), 2020.

Fast Multiparty Threshold ECDSA with Fast Trustless Setup
Rosario Gennaro, Steven Goldfeder.
ACM Conference on Computer and Communications Security (CCS), 2018.

Arbitrum: Scalable, private smart contracts
Harry Kalodner, Steven Goldfeder, Xiaoqi Chen, S. Matthew Weinberg, Edward W. Felten.
USENIX Security, 2018.

Threshold Cryptosystems From Threshold Fully Homomorphic Encryption
Dan Boneh, Rosario Gennaro, Steven Goldfeder, Aayush Jain, Sam Kim, Peter M. R. Rasmussen, Amit Sahai.
CRYPTO, 2018.

When the cookie meets the blockchain: Privacy risks of web payments via cryptocurrencies
Steven Goldfeder, Harry Kalodner, Dillon Reisman, Arvind Narayanan.
Privacy Enhancing Technologies Symposium (PETS), 2018.

BlockSci: Design and applications of a blockchain analysis platform
Harry Kalodner, Steven Goldfeder, Alishah Chator, Malte Möser, Arvind Narayanan.
Manuscript, 2017.
[BlockSci code]

Zero-Knowledge Contingent Payments Revisited: Attacks and Payments for Services
Matteo Campanelli, Rosario Gennaro, Steven Goldfeder, Luca Nizzardo.
ACM Conference on Computer and Communications Security (CCS), 2017.
[Pay-to-sudoku attack code] [ZKCSP code] [Boolean circuit for SHA-256]

Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives
Melissa Chase, David Derler, Steven Goldfeder, Claudio Orlandi, Sebastian Ramacher, Christian Rechberger, Daniel Slamanig, Greg Zaverucha.
ACM Conference on Computer and Communications Security (CCS), 2017.

Using Level-1 Homomorphic Encryption To Improve Threshold DSA Signatures For Bitcoin Wallet Security
Dan Boneh, Rosario Gennaro, Steven Goldfeder.
Latincrypt, 2017.

Escrow protocols for cryptocurrencies: How to buy physical goods using Bitcoin
Steven Goldfeder, Joseph Bonneau, Rosario Gennaro, Arvind Narayanan.
Financial Cryptography and Data Security, 2017.

Proofs-of-delay and randomness beacons in Ethereum
Benedikt Buenz, Steven Goldfeder, Joseph Bonneau.
IEEE Security & Privacy on the Blockchain, 2017.

Efficient Post-Quantum Zero-Knowledge and Signatures
Steven Goldfeder, Melissa Chase, Greg Zaverucha.
Manuscript, 2016.
[CODE]

Determining an Optimal Threshold on the Online Reserves of a Bitcoin Exchange
Samvit Jain, Edward Felten, Steven Goldfeder.
Workshop on the Economics of Information Security (WEIS), 2016.

Threshold-optimal DSA/ECDSA signatures and an application to Bitcoin wallet security
Rosario Gennaro, Steven Goldfeder, Arvind Narayanan.
Applied Cryptography and Network Security (ACNS), 2016.
[CODE]

On Bitcoin as a public randomness source
Joseph Bonneau, Jeremy Clark, Steven Goldfeder.
Manuscript, 2015.

Securing Bitcoin wallets via a new DSA/ECDSA threshold signature scheme
Steven Goldfeder, Rosario Gennaro, Harry Kalodner, Joseph Bonneau, Edward W. Felten, Joshua A. Kroll, Arvind Narayanan.
Manuscript, 2015.

Elastic Ring Search for Ad Hoc Networks
Simon Shamoun, David Sarne, Steven Goldfeder.
MobiQuitous, 2013.