Applied Scientist at Amazon Web Services.

Former PhD student at the Centre for Doctoral Training in Cyber Security hosted at Royal Holloway, University of London, supervised by Kenny Paterson.

I am interested in all aspects of information security with a particular interest in applied cryptography.

Publications

My DBPL profile

Many a Mickle Makes a Muckle: A Framework for Provably Quantum-Secure Hybrid Key Exchange
Benjamin Dowling, Torben Hansen and Kenny Paterson
PQCrypto 2020. [Link]

libInterMAC: Beyond Confidentiality and Integrity in Practice
Martin Albrecht, Torben Hansen and Kenny Paterson
FSE 2019 / ToSC 2019. [Link] [Youtube]

On the Information Ratio of Non-Perfect Secret Sharing Schemes
Journal version of Optimal Non-Perfect Uniform Secret Sharing Schemes
Oriol Farràs, Torben Hansen, Tarik Kaced and Carles Padró
Algorithmica 79:987-1013 (2017). [ePrint]

A Surfeit of SSH Cipher Suites
Martin Albrecht, Jean Paul Degabriele, Torben Hansen and Kenny Paterson
CCS 2016. [Link]
Best Paper Award

Optimal Non-Perfect Uniform Secret Sharing Schemes
Oriol Farràs, Torben Hansen, Tarik Kaced and Carles Padró
CRYPTO 2014. [BibTex] [Youtube]

Experience

Applied Scientist, Amazon Web Services
April 2020 - Currently

Intern, Amazon Web Services
May 2019 - July 2019

Intern, Amazon Web Services
January 2018 - June 2018

Intern, HP Inc.
June 2017 - December 2017

Student Programmer, Alexandra Institute
February 2014 - June 2015

Teaching Assistant, Aarhus University
Fall 2011 - Spring 2015
Various classes on topics:
Calculus, linear algebra, algorithms, data structures

Education

PhD Applied Cryptography
Royal Holloway, University of London, September 2015 - 2020

MSc. Mathematics
Aarhus University, August 2015

Erasmus replacement student
Rovira i Virgili Universitat, Spain, August 2013 - December 2013
Research assistant hosted by Oriol Farràs

Erasmus exchange student
Utrecht University, Holland, September 2012 - January 2013

BSc. Mathematics
Aarhus University, September 2012

Profiles

Linkedin
Twitter
GitHub

Misc

My Erdős number is 4 via Erdős - Pomerance - Damgård - Farràs - Me (To the best of my knowledge).