# Cloudflare Develops Public Certificate Authority for Post-Quantum Web Security

Source: [InfoQ](https://www.infoq.com/news/2026/11/cloudflare-merkle-certificates/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=global) · 2026-11-09 · Cloud & DevOps
Page: https://themorning.dev/story/cloudflare-develops-public-certificate-authority-for-post-quantum-web-security-4ade5241ebc40902
Kind: research · Impact: medium

## In brief

- Cloudflare is developing a public certificate authority for Merkle Tree Certificates (MTCs).
- MTCs aim to reduce the bandwidth overhead of post-quantum cryptography in web certificates.
- A Chrome experiment served billions of MTCs to 50% of Chrome Beta 146 for selected domains, reporting a 9% faster median connection time.

## Why it matters

Post-quantum certificates are much larger than current ones, and MTCs could cut the handshake overhead that slows down secure connections. A public CA would make this approach usable beyond Cloudflare's own infrastructure.

## Versions

- Chrome Beta 146

## Timeline

- 2026-11-09: InfoQ reports that Cloudflare is developing a public CA for Merkle Tree Certificates

## Coverage

- [Cloudflare Develops Public Certificate Authority for Post-Quantum Web Security](https://www.infoq.com/news/2026/11/cloudflare-merkle-certificates/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=global) — InfoQ, 2026-11-09

Tags: post-quantum, tls, certificates, cloudflare, chrome

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev