Jean-philippe Aumasson
Chief Security Officer, Co-Founder at Capital Markets and Technology Association
Lausanne Metropolitan Area Switzerland
Summary
🤩
Rockstar🎓
Top SchoolJean-philippe Aumasson is a cryptographer-turned-technology executive with 12+ years building secure systems for finance and blockchain as Co-Founder and Chief Security Officer at Taurus in Switzerland. He is the author of Serious Cryptography and a contributor to foundational open-source primitives—work on BLAKE2/BLAKE3 and the Argon2 reference implementations underscores his hands-on impact on widely used cryptographic standards. He leads industry standardization efforts (DACS, CMTAT) and advises startups and VCs on trusted computing and decentralised security, blending academic rigor from an EPFL PhD with practical product delivery. Notably, his background includes inventing cryptanalysis techniques during his doctoral work and translating that research into production-grade custody and key-management platforms used by most Swiss banks.
12 years of coding experience
13 years of employment as a software developer
Research Master (MPRI) Computer science, Research Master (MPRI) Computer science at Université Paris CitéPhD Computer science, PhD Computer science at EPFLMaster Computer science, Master Computer science at CY Cergy Paris Université
French, English, Spanish, German
Github Skills (11)
c1710
security10
password-hash10
hash10
hashing-algorithm10
c1110
multithreading10
cryptography10
b2b10
testing10
command-line-interface7
Programming languages (18)
Github contributions (5)
P-H-C/phc-winner-argon2
Oct 2015 - Jun 2021
The password hash Argon2, winner of PHC
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 221 commits, 78 PRs in 5 years 9 months
Contributions summary:Jean-philippe primarily focused on developing the core Argon2 password hashing algorithm, which is the primary purpose of the repository. They implemented and refined low-level memory functions, hash function initialization, and the overall memory block filling and finalization procedures. They also updated the test suite, improved argument handling and expanded capabilities of the command-line utility. Additionally, they incorporated updates and code improvements from the original Argon2 designers.
cryptographyhashpasswordscryptpassword-hash
BLAKE2/BLAKE2
Oct 2015 - Dec 2016
BLAKE2 official implementations
Role in this project:Back-end Developer
Back-end DeveloperContributions:31 commits, 5 PRs, 34 pushes in 1 year 1 month
Contributions summary:Jean-philippe primarily focused on enhancing the official BLAKE2 implementations within the repository. Their contributions involved consistent parameter checks, ensuring robust and reliable functionality across various implementations (ref, sse). The user also added support for B2X functionality by adding xof_length and other relevant changes, in addition to making several improvements to the test procedures for the B2XS.
implementationsblake2
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