Cryptographer, co-founder & chief security officer at Taurus SA.

I also write fiction and maintain the blog bfSwA.

Technical Books

No Starch, 2024
+ translations

Dunod, 2024

No Starch, 2020

No Starch, 2017
+ translations

Springer, 2014

Cryptography Designs

• Hash functions BLAKE, BLAKE2 (RFC 7693), BLAKE3
• Pseudorandom function SipHash (used in Linux, Rust, Wireguard, Bitcoin, etc.)
• Post-quantum signatures PRUNE-HORST, Gravity-SPHINCS, SPHINCS+ (FIPS 205, SLH-DSA)
• Password Hashing Competition & winner Argon2 (RFC 9106)

Fiction

Novella, 2026

Novella, 2025

Short stories, 2024

Children's book, 2021

Misc

• awesome-post-quantum
• Murphy's laws of cryptography
• Research satires
• Quantum merch store

Contact

• Signal (jpa.01), [email protected], GitHub, LinkedIn.