Shaanan Cohney

Virtual Classrooms and Real Harms: Remote Learning at US Universities

Shaanan Cohney, Ross Teixeira, Anne Kohlbrenner, Arvind Narayanan, Mihir Kshirsagar, Yan Shvartzshnaider, Madelyn Sanfilippo

Conference Proceedings  |  2021  |  PROCEEDINGS OF THE SEVENTEENTH SYMPOSIUM ON USABLE PRIVACY AND SECURITY (SOUPS 2021)

Universities have been forced to rely on remote educational technology to facilitate the rapid shift to online learning. In doing ..

Transactional scripts in contract stacks

S Cohney, DA Hoffman

Journal article  |  2020  |  Arthropoda selecta

Virtual Classrooms and Real Harms

Shaanan Cohney, Ross Teixeira, Anne Kohlbrenner, Arvind Narayanan, Mihir Kshirsagar, Yan Shvartzshnaider, Madelyn Sanfilippo

Journal article  |  2020  |  arXiv preprint arXiv:2012.05867

Pseudorandom Black Swans: Cache Attacks on CTR_DRBG

Shaanan Cohney, Andrew Kwong, Shahar Paz, Daniel Genkin, Nadia Heninger, Eyal Ronen, Yuval Yarom

Conference Proceedings  |  2020  |  2020 IEEE SYMPOSIUM ON SECURITY AND PRIVACY (SP 2020)

Modern cryptography requires the ability to securely generate pseudorandom numbers. However, despite decades of work on side-chann..

COIN-OPERATED CAPITALISM

Shaanan Cohney, David Hoffman, Jeremy Sklaroff, David Wishnick

Journal article  |  2019  |  COLUMBIA LAW REVIEW

This Article presents the legal literature’s first detailed analysis of the inner workings of Initial Coin Offerings (ICOs). We ch..

Too Important to Leave to Chance: Pseudorandom Number Generator Standardization & Security

Shaanan Cohney

Thesis / Dissertation  |  2019

This dissertation addresses the security of pseudorandom number generators (PRGs), illustrating that flaws persist within key stan..

Where Did I Leave My Keys. Lessons from the Juniper Dual EC Incident

Stephen Checkoway, Jacob Maskiewicz, Christina Garman, Joshua Fried, Shaanan Cohney, Matthew Green, Nadia Heninger, Ralf-Philipp Weinmann, Eric Rescorla, Hovav Shacham

Journal article  |  2018  |  COMMUNICATIONS OF THE ACM

In December 2015, Juniper Networks announced multiple security vulnerabilities stemming from unauthorized code in ScreenOS, the op..

Practical state recovery attacks against legacy RNG implementations

Shaanan N Cohney, Matthew D Green, Nadia Heninger

Conference Proceedings  |  2018  |  PROCEEDINGS OF THE 2018 ACM SIGSAC CONFERENCE ON COMPUTER AND COMMUNICATIONS SECURITY (CCS'18)

The ANSI X9.17/X9.31 pseudorandom number generator design was first standardized in 1985, with variants incorporated into numerous..

Measuring small subgroup attacks against Diffie-Hellman

Luke Valenta, David Adrian, Antonio Sanso, Shaanan Cohney, Joshua Fried, Marcella Hastings, J Alex Halderman, Nadia Heninger

Conference Proceedings  |  2017  |  Proceedings 2017 Network and Distributed System Security Symposium

Factoring as a Service

Luke Valenta, Shaanan Cohney, Alex Liao, Joshua Fried, Satya Bodduluri, Nadia Heninger

Book Chapter  |  2017  |  Lecture Notes in Computer Science

The difficulty of integer factorization is fundamental to modern cryptographic security using RSA encryption and signatures. Altho..