Conor Deegan
I'm a computer scientist and software engineer. I work on post-quantum cryptography.
I'm the co-founder and CTO of Project Eleven. I also write on the Project Eleven blog.
Writing
ML-DSA: To Pre-Hash or Not to Pre-Hash
Post-Quantum Signatures from Scratch, Part 3: Breaking a Reused Key
Post-Quantum Signatures from Scratch, Part 2: Lamport One-Time Signatures
Post-Quantum Signatures from Scratch, Part 1: SHA-256
X-Wing: How it works, and why it is secure
Crypto-agility is the ability to delete crypto
PQC and side channels: the gap between standards and implementations
Quantum is not only decryption. It is forgery too.
The post-quantum signature trilemma
The shared discipline of security engineering
SLH-DSA-B: Creating a BLAKE3 variant of SLH-DSA
ML-DSA-B: Replacing SHAKE with BLAKE3 in ML-DSA
Benchmarking post-quantum signatures
My thoughts on hybrid post-quantum cryptography
What is quantum computing?
Quantum computing and openness
Projects/Research
Lattice HD Wallets
Post-quantum BIP32 Hierarchical Deterministic Wallets from Lattice Assumptions
PQC Suite B
Performance optimizations for post-quantum signature schemes with the BLAKE3 hash function
Post-quantum algorithm registry
I maintain a curated, open-source registry of post-quantum cryptographic algorithms, providing clear, structured data and comparisons for researchers and engineers.
Benchmarking post-quantum signatures
Benchmarking post-quantum signatures against ECDSA
Get notified when I publish new writing.