Ludovic Barman
PhD. student in Security & Privacy
Hi, I'm Ludovic !
I am a 5th-year PhD student at EPFL in the Laboratory for Data Security and the Decentralized & Distributed Systems Laboratory, co-advised by Prof. Jean-Pierre Hubaux and Prof. Bryan Ford.
I have a strong interest in security and privacy; my research topics revolve around anonymity networks and the quantification and protection of communication metadata. I like designing and building systems. In my free time, I enjoy thinkering with DiY projects and hiking in the Alps.
Feel free to contact me! I speak French and English. firstname.lastname@protonmail.com
Table of contents: projects / blog posts / education / past positions / demos.
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Projects
- Website Fingerprinting and Defenses2021
- Rubato: Metadata-Private Messaging for Mobile Devices2021
- Every Byte Matters: Traffic-Analysis of Bluetooth Wearable Devices 2021
L. Barman, A. Dumur, A. Pyrgelis, J-P. Hubaux. Ubicomp 2021
paper - Decentralized Privacy-Preserving Proximity Tracing (DP3T)2020
My contribution to this large team project mostly consists of: security analysis (of the initial project PEPP-PT, then of DP3T), reviews of alternative protocols (ROBERT, DESIRE, etc), and some work on interoperability.
website, paper, some press articles: Reuters, BBC, Financial Times, Blick, Le Temps - PriFi: Low-Latency Metadata Protection for Organizational Networks 2018
L. B., I. Dacosta, M. Zamani, E. Zhai, A. Pyrgelis, B. Ford, J. Feigenbaum, J-P. Hubaux. PETS 2020
paper, website, code - Reducing Metadata Leakage from Encrypted Files and Communication with PURBs 2018
K. Nikitin & L. Barman, M. Underwood, W. Lueks, B. Ford, J-P. Hubaux. PETS 2019
paper, website, press article, presentation, code - Drand & LeagueOfEntropy.com: Provable Distributed Randomness 2017
My contribution to this team project is mostly code.
website, code, various press articles - PriFi: A Low-Latency [...] Protocol for Local-Area Anonymous Communication 2016
L. Barman, M. Zamani, I. Dacosta, J. Feigenbaum, B. Ford, J-P. Hubaux, D. Wolinsky. WPES 2016
paper - Mirror: Enabling Proofs of Data Replication and Retrievability in the Cloud 2015
F. Armknecht, L. Barman, J-M. Bohli, G. Karame. USENIX Security 2016
paper - Privacy Threats and Practical Solutions for Genetic Risk Tests 2015
L. Barman, E. Graini, J-L. Raisaro, E. Ayday, J-P. Hubaux. GenoPri 2015
paper
Blog posts
Non-peer-reviewed posts, highlights on personal projects & random discussions.
- Padmé: Efficiently hiding file sizes read it 2020
An inexpensive padding function to protect the size metadata - IoT Home Automation with 3D-Printing read it 2019
Keeping my fish and plants alive while I'm away - A TLS downgrade attack with NetFilter's Queues and Docker read it 2017
Try your very own MitM and downgrade attack now ! - A Journey into Stack Smashing read it 2017
A first attempt at crackme's - Should I trust the GitHub activity summary ? read it 2016
A «hello world» on GitHub - Escaping the PyJail read it 2016
Getting out of a python sandbox - Hunting Aurora Borealis : a Cookbook read it 2016
A step-by-step guide to finding Northern Lights
Education
- EPFL, Lausanne : PhD in Security and Privacy, with Jean-Pierre Hubaux and Bryan Ford started in 2015
- EPFL, Lausanne : Master in Communications Systems, specialized in Security 2013 - 2015
- NUS, Singapore : one-year exchange in Electrical Engineering & Computer Science 2012 - 2013
- EPFL, Lausanne : Bachelor in Communications Systems 2010 - 2013
Selected Past Positions
- Research Intern at Cloudflare, London
2020
Website Fingerprinting and Defenses - Teaching Assistant at EPFL (part of the PhD program)
since 2015
In the class "Information Security and Privacy", I rebuilt the aging infrastructure in favor of a more reliable setup with dockers and Continuous Integration. I also designed several exercises such as a TLS downgrade attack & implementation of a PAKE protocol.
In the class "Mobile Networks", I helped building hands-on exercises about Wireless networks and their security/privacy aspects. I gave a lecture about Tor and the anonymity on the Web. - Intern at NEC Laboratories Europe, Heidelberg
2015
Master Thesis, NEC Laboratories Europe, Heidelberg
Supervised by G. Karame (NEC Laboratories Europe) and P. Oechslin (LASEC, EPFL) - Teaching assistant at EPFL
2012
For the class "System-oriented Programming", where students learn about SH, C, Perl, Unix. Supervision of semester projects for students in Java, involving cryptography and networking. - various Web Developer positions (Sunergic, CJ Online Works, JE EPFL, Intemporare)
2008 - 2019
At Sunergic, I created a Web application for monitoring Siemens solar panels. In addition, it enabled clients to design a roof (through a graphical wizard) and estimate the expected efficiency and profit of a solar installation. This application has been used by several partners of Sunergic and Romande Energie.
Demos
Note: these demos have not been updated since early 2020.
- Vaultage : a self-hosted, in-browser password manager with client-side encryption 2015-2020
Technologies: Express/Typescript, SJCL (crypto), Jest/Jasmine+Pupeteer (testing) - TuringWars : A game where small programs fight on a shared computer! (reboot of CoreWars)2017-2019
Technologies: Scala+ScalaJS (backend), Express/Typescript/TypeORM/React/Redux (backend + frontend), Webpack/Docker. Made in 24h @ Lauzhack, then improved for a while.