I do research in applied cryptography more specifically and computer security more generally. I am an adjunct professor at NYU Paris and direct Symbolic Software.

Ph.D. Thesis

Formal Verification for Real-World Cryptographic Protocols and Implementations — defended December 10, 2018 at INRIA Paris after 3½ years of research with Team PROSECCO.


Symbolic Software is a company focused on modern insight into cryptographic systems. As its director, I manage a small team that offers security audits, cryptographic protocol design and formal verification services. We recently released Noise Explorer, an online engine for reasoning about and formally verifying Noise-based cryptographic protocols.



  • DiskGem, a command-line secure file transfer (SFTP) client written in Go.
  • Cryptocat, the first web-based secure messenger with end-to-end encryption. Infamous for security bugs during its early days, it eventually became the first secure messenger implementing a formally verified protocol (see EuroS&P 2017 paper below.)


Selected Publications

Invited Talks

Photography and Art

Music Links