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CNSA 2.0
The SLH-DSA Exclusion: Why NSA Left Out NIST’s Conservative Fallback
NSA excluded NIST's hash-based signature algorithm from CNSA 2.0 and stated it does not plan to add future post-quantum standards. The decision reveals how NSA thinks about lattice security, operational simplicity, and the trade-offs that other national authorities resolve differently.
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Quantum Threat to Cryptocurrencies
Preparing for Crypto’s Quantum Future: A Practical Guide
The quantum threat to cryptocurrencies is real but not imminent. The migration will take years. This guide translates the full series into specific actions, segmented by who you are and what you control.
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Quantum Threat to Cryptocurrencies
Beyond Bitcoin and Ethereum: Quantum Vulnerabilities Across the Blockchain Ecosystem
Zcash aims for full post-quantum security by 2027. Solana's two core teams independently chose Falcon. Algorand deployed PQ signatures in 2022. QRL has been quantum-safe since 2018. The blockchain ecosystem's quantum readiness varies from leading-edge to nonexistent.
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Quantum Threat to Cryptocurrencies
Bitcoin’s Quantum Migration: The Decade Is Political, Not Technical
Jameson Lopp proposed freezing 6.5 million quantum-vulnerable Bitcoin. The community called it authoritarian within hours. The engineering exists. Whether Bitcoin's decentralized governance can coordinate action against a time-bounded threat is the open question.
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Research
Theorists Prove Passive Quantum Memory Works in Three Dimensions, Settling a 25-Year-Old Question
A Caltech–UCSD team has constructed a 3D quantum system that can store a qubit for exponential time without active error correction. The result settles a question that has resisted the field's best efforts for a quarter century.
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Quantum Threat to Cryptocurrencies
Fixing the Lightning Network: A Protocol-Level Migration Roadmap
Fixing Lightning requires changes to every layer of the protocol stack, from Noise transport through Sphinx routing to on-chain HTLC settlement. This is the BOLT-by-BOLT migration roadmap, structured by what can be shipped now versus what requires a Bitcoin consensus…
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Quantum Threat to Cryptocurrencies
The Lightning Network’s Quantum Problem: Why Layer 2 Is Harder Than Layer 1
Lightning's quantum vulnerability runs deeper than Bitcoin Layer 1. The protocol requires continuous public key exposure across funding, routing, gossip, and revocation. Application-layer upgrades can protect metadata, but fund security demands a base-layer consensus change.
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Quantum Threat to Cryptocurrencies
Ethereum’s Five Quantum Vulnerabilities: Why Smart Contracts Change Everything
Ethereum's quantum exposure goes far beyond wallet signatures. Five distinct vulnerability classes threaten accounts, admin keys, smart contracts, validator consensus, and the data availability layer, each with different attack mechanics and different mitigation paths.
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Quantum Threat to Cryptocurrencies
Fixing Bitcoin: The Post-Quantum Migration Technical Roadmap
Making Bitcoin quantum-safe requires a new output type, a signature algorithm ten times larger than ECDSA, a multi-year UTXO migration, and emergency escape hatches for when the timeline slips. This is the full engineering roadmap.
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Quantum Threat to Cryptocurrencies
Bitcoin’s Quantum Vulnerability: Anatomy of the Attack Surface
Roughly 6.7 million Bitcoin sit in addresses with exposed public keys, including 1.7 million in Satoshi-era P2PK scripts that can never be migrated. This is the full anatomy of Bitcoin's quantum attack surface.
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Quantum Threat to Cryptocurrencies
How Close Is the Quantum Threat? Resource Estimates for Breaking Blockchain Cryptography
Resource estimates for breaking blockchain cryptography have collapsed by orders of magnitude in half a decade. Two parallel hardware paths, fast-clock superconducting and slow-clock neutral atom, are converging on the same target from opposite directions.
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Quantum Threat to Cryptocurrencies
The Quantum Threat to Cryptocurrencies: What’s Real, What’s Hype, and What to Do About It
Google Quantum AI estimates that breaking the 256-bit elliptic curve cryptography protecting Bitcoin and Ethereum would require fewer than 500,000 physical qubits and roughly nine minutes of runtime on a superconducting architecture. The same day that paper landed, a separate…
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Quantum Security & PQC
A Viral Paper Claims Lattice-Based PQC Has “Fundamental Limitations” — The Arguments Are Old and the Conclusion Is Wrong
A Seoul National University paper arguing lattice-based cryptography has "fundamental limitations" is generating alarming headlines. The theoretical points are valid but well-known. What the paper actually demonstrates is why PQC migration should accelerate, not stall.
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Industry
China’s Hanyuan-2 “Dual-Core” Quantum Computer: Clever Marketing, Missing Benchmarks
CAS Cold Atom Technology's Hanyuan-2 uses two rubidium isotope arrays and calls itself the world's first dual-core quantum computer. The framing is clever. The missing performance data tells a different story.
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Post-Quantum, PQC, Quantum Security
Pick One Layer: How to Choose the Post-Quantum Migration That Protects the Most
Recent research proves one post-quantum layer can protect all payload confidentiality. But which layer should you migrate first? Six enterprise architecture scenarios analyzed.
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