Cloud-covered mountains at the end of Doubtful Sound panorama

Douglas Stebila

About me

I'm an Associate Professor of cryptography in the Department of Combinatorics & Optimization at the University of Waterloo in Waterloo, Ontario, Canada. My research focuses on improving the security of Internet cryptography protocols such as SSL/TLS and SSH, and developing practical quantum-resistant cryptosystems.

Research

My research interests include:

Applied cryptography: key exchange protocols; post-quantum cryptography; digital signatures; public key encryption; client puzzles / proofs of work; elliptic curve cryptography; quantum cryptography
Internet security: network security protocols (SSL/TLS, SSH, Tor, …); public key infrastructure (PKI); authentication

My full list of publications and presentations are available online. My most recent papers are:

Post-quantum TLS without handshake signatures

P. Schwabe, D. Stebila, T. Wiggers. In ACM CCS 2020.

Towards post-quantum security for Signal's X3DH handshake

J. Brendel, M. Fischlin, F. Günther, C. Janson, D. Stebila. In SAC 2020.

Efficient oblivious database joins

S. Krastnikov, F. Kerschbaum, D. Stebila. In Proceedings of the VLDB Endowment, 2020.

A cryptographic analysis of the TLS 1.3 handshake protocol

B. Dowling, M. Fischlin, F. Günther, D. Stebila. In Journal of Cryptology, 2021.

Pictures

I'm fortunate to be able to travel a lot. I take lots of pictures on my trips. The best of my photos are posted in my galleries. My most recent galleres are: