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Mon 星期一
12.08
2025
Quantum computing and blockchains: Matching urgency to actual threats https://a16zcrypto.com/posts/article/quantum-computing-misconceptions-realities-blockchains-planning-migrations/
Justin Thaler analyzed the threat of quantum computing to blockchains in blog, clarifying the different risks of encryption and signatures under HNDL attacks, and discussing the quantum security of zkSNARKs. Justin Thaler在博文中分析了量子计算对区块链的威胁，澄清了加密和签名在HNDL攻击下的不同风险，并讨论了zkSNARKs的量子安全性。
Notes
- HNDL attacks make post-quantum encryption deployment urgent, but signatures are not affected, migration can be delayed
- zkSNARKs' zero-knowledge properties are post-quantum secure, with no HNDL attack threat
- Quantum computers cannot break encryption in the short term, CRQC may take decades to achieve
- Post-quantum signatures have high performance overhead and implementation risks, requiring careful migration
- Enterprises should prioritize solving more urgent security issues, such as code vulnerabilities
- Hybrid encryption schemes (e.g., ML-KEM+X25519) can balance security and performance