Conor Deegan
@ConorDeegan4
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cryptography x quantum - co-founder & VP engineering @ Project Eleven @qdayclock
Internet
Joined April 2019
I’ve been benchmarking post-quantum digital signature algos for our latest product @qdayclock. Reading about them is one thing; running them is another. TL;DR ⬇️.
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Making post-quantum cryptography human-friendly. One 24-word BIP-39 seed phrase → BIP-32 hierarchical key tree → BIP-85 entropy extraction = every* post-quantum keypair you’ll ever need. No new mental model. No extra backups. Just one phrase, infinite* quantum-safe keys.
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RT @qdayclock: Generating Post-Quantum Keypairs from a Single 24-Word Seed Phrase - new blog by @ConorDeegan4. Can one mnemonic supply ever….
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Myself and @Joseph_Kearney did a deep dive into stablecoins and the quantum vulnerabilities of Circle's USDC smart contract running on Ethereum. Have a read.
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classical → hybrid → pure post quantum cryptography. Some thoughts on hybrid post-quantum cryptography (PQC). Quantum computers will break RSA and ECC, that we know. We already have PCQ, but it's largely still new and untested in the wild. Hybrid PQC pairs classical +.
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RT @FinnMurphy12: starting off my usual day of bizniz at noon on a friday to get stuck into the news and what do I see?. Project Eleven ful….
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@qdayclock @variantfund @Quantonation @CastleIslandVC @Nebularvc @formation_vc quantum 🤝 cryptography. Shipping yellowpages: the only post-quantum proof of Bitcoin ownership. It's free, audited, and open-source. yellowpages lets you create post quantum key pairs (ML-DSA & SLH-DSA) and link them to your current Bitcoin addresses without moving a satoshi.
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@qdayclock @variantfund @Quantonation @CastleIslandVC @Nebularvc @formation_vc More info on the seed here:
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It's been a busy few months. Happy to say we, Project Eleven (@qdayclock) have raised a $6 million seed round co-led by @variantfund and @Quantonation, with backing from @CastleIslandVC, @Nebularvc, and @formation_vc. Quantum computers will break today’s public-key crypto; Shor.
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Deep dive into some of the post quantum proposals for Bitcoin. It was an enjoyable piece to write.
Bitcoin’s elliptic-curve signatures fail once scalable quantum computers arrive. We dug into seven proposals to keep the network safe and measured the trade-offs 👇🧵.
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The NIST-approved post-quantum signatures also bring a bunch of new bandwidth & storage trade-offs:. ECDSA (baseline): pub key 33 B | sig 64 B.ML-DSA: pub key 1.3–2.6 KB | sig 2.4–4.6 KB.SLH-DSA: pub key 32–64 B | sig 8–50 KB (!!). - Bandwidth & latency: SLH-DSA tacks on tens of.
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Full results in the repo (including a comparison to ECDSA). Your mileage may vary, do your own research:
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SLH_DSA fast variants (f) are significantly faster than small variants (s) (no surprises there. ), key gen is much slower in small variants, signing is the most time-consuming (in the order of seconds for s variants), verification is relatively fast across all.
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ML_DSA variants are fairly consistent in terms of performance and scale as expected. Verification is significantly faster than signing across all variants.
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RT @qdayclock: We're @ Bitcoin Vegas talking about:. 1. Defining the Threat Model for quantum computing x Bitcoin (h/t @austinhill). 2. Ma….
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