Bitcoin's Quantum Computing Vulnerability: Timeline and Upgrade Paths
By
nehan
Crisp on the outside, thoughtful on the inside. A keeper.
Summary
The article discusses the quantum computing threat to Bitcoin's security, specifically how Bitcoin's current cryptographic signatures would be vulnerable if a cryptographically-relevant quantum computer (CRQC) were to emerge. It examines two main uncertainties: the timeline for when such quantum computers might appear, and the technical pathways for Bitcoin to upgrade its security to withstand quantum attacks. The content focuses on the technical challenges and potential solutions for making Bitcoin quantum-resistant.
Key quotes
· 5 pulledBitcoin's signatures are broken if a cryptographically-relevant quantum computer (CRQC) were to appear tomorrow.
Bitcoin requires changes both to its code and to everyone's wallets (at least a soft fork and many users moving coins to different types of addresses) to be secure in the presence of a CRQC.
The remaining uncertainty is in two main areas: timeline and how to address this.
What is the likelihood of a CRQC appearing, and on what timeframe?
What are the best paths for Bitcoin successfully upgrading so that it would not be br
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