Cloudflare Develops Public Certificate Authority for Post-Quantum Web Security

By Leela Kumili · InfoQ · Monday, 9 November 2026 at 14:35 (4h ago) · Original article ↗

Cloudflare is developing a public certificate authority for Merkle Tree Certificates (MTCs) to reduce the bandwidth overhead of post-quantum cryptography. A Chrome experiment served billions of MTCs to 50% of Chrome Beta 146 for selected domains, reporting 9% faster median performance. Wider deployment depends on browser support, transparency, and production-scale validation.

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