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About me

I'm a Senior Lecturer in cryptography at the Queensland University of Technology in Brisbane, Australia. My research focuses on improving the security of Internet cryptography protocols such as SSL/TLS and SSH.


My research interests include:

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

My full list of publications is available here. My most recent papers are:

J. Alawatugoda, D. Stebila, C. Boyd. In IMA Cryptography & Coding 2015.

B. Dowling, M. Fischlin, F. Günther, D. Stebila. In ACM CCS 2015.


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:


I have a blog. I have not been very good at updating it lately, but here are my most recent posts:

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