Darya Kaviani

daryakaviani@berkeley.edu

I am a third-year Ph.D. student at UC Berkeley, where I am advised by Raluca Ada Popa. I design systems that are secure, private, and efficient, especially in the context of AI and cryptographic systems.

I was fortunate to intern at Microsoft Research Security Group with Srinath Setty in summer '25 and the Bocconi Cryptography Group with Giulio Malavolta in summer '24. I completed my B.S. in Electrical Engineering and Computer Science and minor in Ethnic Studies at UC Berkeley, where I was President of Blockchain at Berkeley and worked with Niloufar Salehi on human-computer interaction research.

I am supported by the Amazon AI PhD Fellowship.

🌟 Vega: Low-Latency Zero-Knowledge Proofs over Existing Credentials [Full Version] [Thread]
Darya Kaviani, Srinath Setty

🍄 Myco: Unlocking Polylogarithmic Accesses in Metadata-Private Messaging [Conference Proceedings] [Full Version] [Code] [Poster] [Thread]
Darya Kaviani, Deevashwer Rathee, Bhargav Annem, Raluca Ada Popa
IEEE S&P 2025

🦝 Ringtail: Practical Two-Round Signatures from Learning with Errors [Conference Proceeedings] [Full Version] [Code] [Poster] [Thread]
Cecilia Boschini*, Darya Kaviani*, Russell W. F. Lai*, Giulio Malavolta*, Akira Takahashi*, Mehdi Tibouchi*
IEEE S&P 2025

⏳ Papercraft: Lattice-based Verifiable Delay Function Implemented [Conference Proceedings] [Full Version]
Michał Osadnik, Darya Kaviani, Valerio Cini, Russell W. F. Lai, Giulio Malavolta
IEEE S&P 2025

🤝 It Actually Doesn't Feel Very Mutual:" How Technology Impacts the Values of Mutual Aid Groups in Practice [Conference Proceeedings] [Full Version]
Tonya Nguyen, Darya Kaviani, Niloufar Salehi
ACM CHI 2025

🪶 Flock: A Framework for Deploying On-Demand Distributed Trust [Conference Proceedings] [Full Version] [Code] [Artifact Eval] [Poster] [Blog] [Thread]
Darya Kaviani*, Sijun Tan*, Pravein Govindan Kannan, Raluca Ada Popa
USENIX OSDI 2024 and Real World Crypto 2025

🖼️ Bridging Action Frames: Instagram Infographics in U.S. Ethnic Movements [Conference Proceedings] [Thread]
Darya Kaviani, Niloufar Salehi
ACM CSCW 2022

*equal first author

Myco: Unlocking Polylogarithmic Accesses in Metadata-Private Messaging
MIT CSAIL Security Seminar (October 2025; Cambridge, MA)
Northeastern Security and Privacy Seminar (October 2025; Boston, MA)
Boston University Security Seminar (October 2025; Boston, MA)
Microsoft Research Security Intern Workshop (July 2025; Redmond, WA)
Microsoft Research Security Reading Group (June 2025; Redmond, WA)
IEEE S&P 2025 (May 2025; San Francisco, CA) [Conference Video] [Full Talk Video] [Slides]
JP Morgan AlgoCRYPT Seminar (May 2025; Virtual)
Stanford Security Lunch (May 2025; Palo Alto, CA)
UPenn Distributed Systems Lab Seminar (May 2025; Virtual)

Ringtail: Practical Two-Round Signatures from Learning with Errors
IEEE S&P 2025 (May 2025; San Francisco, CA) [Video] [Slides]

Flock: A Framework for Deploying On-Demand Distributed Trust
RWC 2025 (March 2025; Sofia, Bulgaria) [Video]
OSDI 2024 (July 2024; Santa Clara, CA) [Video]
Intel Security Group (February 2024; Virtual)
Sky Lab Retreat (January 2024; Monterey, CA) [Video]
Sky Lab Camp (October 2023; Berkeley, CA) [Video]
Sky Lab Retreat (June 2023; Lake Tahoe, NV) [Video]

Bridging Action Frames: Instagram Infographics in U.S. Ethnic Movements
ACM CSCW (September 2022; Virtual) [Video] [Slides]

Microsoft Research Security Group, Redmond, WA

May 2025 – Aug. 2025

Research Intern

Bocconi University Cryptography Group, Milan, Italy

May 2024 – Aug. 2024

Research Intern

UC Berkeley Sky Lab, Berkeley, CA

Aug. 2023 – Present

PhD Student

Opyn (Acquired by Coinbase), San Francisco, CA

May 2022 – Oct. 2022

Software Engineer

Facebook Community Help Team, Menlo Park, CA

June – Aug. 2021

Software Engineering Intern

Facebook, Menlo Park, CA

June – Aug. 2020

Facebook University Engineering Intern

The Deployment Dilemma: Merits & Challenges of Deploying MPC
Yehuda Lindell (Head of Cryptography), Coinbase; David Cook (Engineer), Tim Geoghegan (Engineer), Sarah Gran (VP Communications), Internet Security Research Group; Rolfe Schmidt (Research Engineer), Ehren Kret (CTO), Signal; Darya Kaviani (Ph.D. Student), Prof. Raluca Ada Popa, UC Berkeley Security Group**

**alphabetical by institution

CS 171: Introduction to Cryptography
Spring 2024, Graduate Student Instructor

CS 61C: Computer Architecture
Spring 2021, Computer Science Mentor

CS 61B: Data Structures
Spring 2021, Computer Science Mentor
Fall 2020, Computer Science Mentor
Summer 2020, Academic Intern

Amazon AI PhD Fellowship
NSF Graduate Research Fellowship HM
Accel Scholars
Interact Fellowship
Paradigm Fellowship
Center for Society, Technology & Policy Fellowship
Berkeley EECS Honors Program

Contribute real-world MPC deployments to our MPC Deployments Dashboard to help track practical applications. I organize the Berkeley Security Seminar, so if you are in town and would like to give a talk, please reach out!

When I'm not doing research, you'll find me learning how to boulder (V4/5) 🧗‍♀️, hunting for the perfect matcha 🍵 @daryadrinksmatcha, hiking 🥾, or tending to my plant collection 🪴.