• How To Think About End-to-End Encryption and AI [ePrint] [arXiv]
  *Mallory Knodel, Andrés Fábrega, Daniella Ferrari, Jacob Leiken, Betty Li Hou, Derek Yen, Sam de Alfaro, Kyunghyun Cho, and Sunoo Park
• SoK: "Interoperability vs Security" Arguments: A Technical Framework [arXiv]
  *Daji Landis, Elettra Bietti, and Sunoo Park
• Cryptographic Verifiability for Voter Registration Systems [arXiv]
  *Andrés Fábrega, Jack Cable, Michael Specter, and Sunoo Park

1. The Right to Vote Securely [published pdf]
   Sunoo Park
   In the University of Colorado Law Review, Spring 2023.
2. Compelled Decryption and the Fifth Amendment: Exploring the Technical Boundaries [SSRN] [published pdf]
   Aloni Cohen and Sunoo Park
   In the Harvard Journal of Law and Technology (JOLT), Fall 2018 issue.

1. The Pitfalls of "Security by Obscurity" And What They Mean for Transparent AI [arXiv]
   *Peter Hall, Olivia Mundahl, and Sunoo Park
   In the 39th Annual AAAI Conference on Artificial Intelligence (AAAI 2025).
2. Scan, Shuffle, Rescan: Two-Prover Election Audits [ePrint]
   Douglas W. Jones, Sunoo Park, Ronald L. Rivest, and Adam Sealfon
   In the 28th Int'l Conference on Financial Cryptography and Data Security (Financial Crypto 2024).
3. A Systematization of Voter Registration System Security [ePrint] [published pdf]
   Jack Cable, Andrés Fábrega, Sunoo Park, and Michael Specter
   In the Journal of Cybersecurity (2023).
4. The Superlinearity Problem in Post-Quantum Blockchains [ePrint]
   Sunoo Park and Nicholas Spooner
   In the 27th Int'l Conference on Financial Cryptography and Data Security (Financial Crypto 2023).
5. Cryptography, Trust, and Privacy: It's Complicated
   Ero Balsa, Helen Nissenbaum, and Sunoo Park
   In the 2nd ACM Symposium on Computer Science and Law (CSLAW 2022).
6. KeyForge: Non-Attributable Email from Forward-Forgeable Signatures [ePrint]
   *Michael Specter, Sunoo Park, and Matthew Green
   In the 30th USENIX Security Symposium (USENIX Security 2021).
7. Going from Bad to Worse: from Internet Voting to Blockchain Voting [published pdf]
   *Sunoo Park, Michael Specter, Neha Narula, and Ronald L. Rivest
   In the Journal of Cybersecurity (2021).
8. Fully Deniable Interactive Encryption [ePrint]
   Ran Canetti, Sunoo Park, and Oxana Poburinnaya
   In the 20th Annual Int'l Cryptology Conference (CRYPTO 2020).
9. Data Structures Meet Cryptography: 3SUM with Preprocessing [arXiv]
   Alexander Golovnev, Siyao Guo, Thibaut Horel, Sunoo Park, and Vinod Vaikuntanathan
   In the 52nd ACM Symposium on the Theory of Computing (STOC 2020).
10. It Wasn't Me! Repudiability and Unclaimability of Ring Signatures [ePrint]
    Sunoo Park and Adam Sealfon
    In the 39th Annual Int'l Cryptology Conference (CRYPTO 2019).
11. How to Subvert Backdoored Encryption: Security Against Adversaries that Decrypt [ePrint]
    Thibaut Horel, Sunoo Park, Silas Richelson, and Vinod Vaikuntanathan
    In the 10th Innovations in Theoretical Computer Science conference (ITCS 2019).
12. Static-Memory-Hard Functions and Modeling the Cost of Space vs. Time [ePrint]
    Thaddeus Dryja, Quanquan C. Liu, and Sunoo Park
    In the 16th IACR Theory of Cryptography Conference (TCC 2018).
13. Practical Accountability of Secret Processes [ePrint]
    *Jonathan Frankle, Sunoo Park, Daniel Shaar, Shafi Goldwasser, and Daniel J. Weitzner
    In the 27th USENIX Security Symposium (USENIX Security 2018).
14. Proactive Secure Multiparty Computation with a Dishonest Majority
    Karim Eldefrawy, Rafail Ostrovsky, Sunoo Park, and Moti Yung
    In the 11th Conference on Security and Cryptography for Networks (SCN 2018).
15. SpaceMint: A Cryptocurrency Based on Proofs of Space [pdf] [ePrint]
    *Sunoo Park, Albert Kwon, Georg Fuchsbauer, Peter Gaži, Joël Alwen, and Krzysztof Pietrzak
    In the 22nd Int'l Conference on Financial Cryptography and Data Security (Financial Crypto 2018).
16. Public Accountability vs. Secret Laws: Can They Coexist? [ePrint]
    Shafi Goldwasser and Sunoo Park
    In the 16th Workshop on Privacy in the Electronic Society (WPES) at CCS 2017.
17. Towards Secure Quadratic Voting [pdf] [ePrint]
    Sunoo Park and Ronald L. Rivest
    In Public Choice 2017.
18. How to Incentivize Data-Driven Collaboration Among Competing Parties [pdf] [ePrint] [arXiv]
    Pablo Daniel Azar, Shafi Goldwasser, and Sunoo Park
    In the 7th Innovations in Theoretical Computer Science Conference (ITCS 2016).
19. Adaptively Secure Coin-Flipping, Revisited [pdf] [ePrint] [arXiv]
    Shafi Goldwasser, Yael Tauman Kalai, and Sunoo Park
    In the 42nd Int'l Colloquium on Automata, Languages, and Programming (ICALP 2015).
20. Cryptographically Blinded Games: Leveraging Players' Limitations for Equilibria and Profit [pdf] [arXiv]
    Pavel Hubáček and Sunoo Park
    In the 15th ACM Conference on Economics and Computation (EC 2014).

NB: In computer science, conferences and symposia are peer reviewed, and they are the primary publication outlets. In law, journals and law reviews are the primary publication outlets. Authors are listed alphabetically by last name, except where indicated by an asterisk.

In spring 2024, I taught a new course, Digital Technology Law, at the NYU School of Law.

In fall 2023, I taught:

• in the Technology Law and Policy Clinic at the NYU School of Law (with Jason Schultz, Esha Bhandari, Jake Karr, and Melodi Dincer), where we do pro bono legal work on technology matters working with law students, and
• a graduate seminar on AI: Challenges in Law, Policy, and Ethics (co-organized with Kyunghyun Cho), based at the Courant Institute and aimed at computer-science and data-science students.

I am a member of the New York City Bar Association’s Task Force on Digital Technologies, in the Subcommittee on Generative Artificial Intelligence and the Law.

My Program Committee service includes:

• IACR Real World Cryptography (RWC) 2025
• ACM Symposium on Computer Science & Law (CSLAW) 2022, 2024, & 2025
• Symposium on the Foundations of Responsible Computing (FORC) 2025
• IEEE Security and Privacy (“Oakland”) 2022 & 2023
• IEEE Security and Privacy (“Oakland”) 2022 & 2023 — Research Ethics Committee
• Neural Information Processing Systems (NeurIPS) 2022 & 2023 — Research Ethics Committee
• ACM Conference on Fairness, Accountability, and Transparency (FAccT) 2021
• Journal of Cryptoeconomic Systems 2020
• IACR Theory of Cryptography Conference (TCC) 2020

In the past, I co-organized a Workshop on Encryption, Surveillance, and Transparency at Johns Hopkins University in August 2018, in collaboration with Matt Green and Mike Specter.

Thank you for your interest! I really appreciate it.

I am not able to reply to all emails I receive from prospective Ph.D. students, due to volume of email. If you’re thinking about emailing me because you’re interested in being my Ph.D. student at NYU Courant, and we don’t already know each other, please fill out this contact form instead of emailing me. This helps me keep your info organized. (Important: the link is just a form to contact me personally; it’s not a formal application to do a Ph.D. To apply for the Ph.D. program at NYU Courant, you must submit an application to NYU GSAS directly.)

If you’re interested in working with me in some other capacity (such as a postdoc, postgraduate law fellowship, J.S.D., or law student RA) then please email me and circle back once if I haven’t replied after two weeks. I appreciate your patience with my inbox, and your interest in working with me.