Applied cryptography, open source

Cryptography, laid brick by brick.

We translate cutting-edge advances in cryptography into practical tools for privacy, safety, and trust in digital systems.

Our research View on GitHub

Cryptography at work

Mempool privacy

Shared control.
No single keyholder.

Our team, with collaborators, introduced batched threshold encryption: validators decrypt a whole block of encrypted transactions with one short share each, while every transaction left out stays private.

Adopted and extended by

Explore threshold encryption

Track record

Research that holds up under peer review.

175 Peer-reviewed papers by the team since 2007
106 At IACR flagship venues: CRYPTO, EUROCRYPT, ASIACRYPT, TCC
17 At top security venues: IEEE S&P, USENIX Security, CCS, PETS
31 Distinct venues, from FOCS to NeurIPS

Selected work

Research at the frontier of practice.

All publications
2026 BABE: Verifying Proofs on Bitcoin Made 1000x Cheaper CCS 2025 Bypassing Prompt Guards in Production with Controlled-Release Prompting arXiv 2026 Jigsaw: Doubly Private Smart Contracts IEEE S&P 2025 Practical Mempool Privacy via One-time Setup Batched Threshold Encryption USENIX Security 2024 hinTS: Threshold Signatures with Silent Setup IEEE S&P

Writing

Ideas, explained from first principles.

All posts
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Feb 20262 authors

Proving Personhood Without Handing Over the Keys

A new cryptographic framework for proofs of personhood.
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Jan 20262 authors

A New Vision for Threshold Encryption

A new path to deployable threshold encryption: silent setup to eliminate DKG friction, and batched threshold encryption to keep decryption scalable.

People

Built by the people who wrote the papers.

Meet the team
Arka Rai Choudhuri
Arka Rai Choudhuri
Senior Scientist
Sanjam Garg
Sanjam Garg
Chief Scientist
Dimitris Kolonelos
Dimitris Kolonelos
Cryptography Researcher
Mingyuan Wang
Mingyuan Wang
Assistant Professor, University of Delaware

Open by default

Trust, by construction.

Our libraries are open source and our research is public. Build on both.

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