Cloudflare 开发面向后量子网络安全的公共证书颁发机构
原标题：Cloudflare Develops Public Certificate Authority for Post-Quantum Web Security
AI 摘要
Cloudflare 测试了 Merkle Tree Certificates（MTC）作为传统证书链的替代方案，在 Chrome 实验中位性能提升 9%，主要得益于省去中间证书；实验使用经典签名而非后量子签名。该实验向 50% 的 Chrome Beta 146 用户提供了数十亿张 MTC，已于 2026 年 8 月结束。Cloudflare 正在开发支持 MTC 签发的公共证书颁发机构，目标是在 2027 年初被纳入 Chrome 的抗量子根存储，但需通过评估。
正文节选
Cloudflare has tested Merkle Tree Certificates (MTCs) as an alternative to traditional certificate chains, reporting 9% faster median performance in a Chrome experiment. The approach batches certificate data into an append-only Merkle tree, letting clients verify certificates with compact inclusion proofs instead of transmitting a full certificate chain. Cloudflare attributed most of the measured improvement to eliminating intermediate certificates; the experiment used classical signatures rathe