Building a serverless, post-quantum Matrix homeserver
2026-01-27
As a proof of concept, we built a Matrix homeserver to Cloudflare Workers — delivering encrypted messaging at the edge with automatic post-quantum cryptography....
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Policy, privacy and post-quantum: anonymous credentials for everyone
2025-10-30
The world is adopting anonymous credentials for digital privacy, but these systems are vulnerable to quantum computers. This post explores the cryptographic challenges and promising research paths toward building new, quantum-resistant credentials from the ground up....
State of the post-quantum Internet in 2025
2025-10-28
Today over half of human-initiated traffic with Cloudflare is protected against harvest-now/decrypt-later with post-quantum encryption. What once was a cool science project, is the new security baseline for the Internet. We’re not done yet: in this blog post we’ll take measure where we are, what we expect for the coming years, and what you can do today....
Keeping the Internet fast and secure: introducing Merkle Tree Certificates
2025-10-28
Post-QuantumResearchCryptographySecurityTLSChromeGoogleIETFTransparencyRustOpen SourceCloudflare Workers
Cloudflare is launching an experiment with Chrome to evaluate fast, scalable, and quantum-ready Merkle Tree Certificates, all without degrading performance or changing WebPKI trust relationships....
Automatically Secure: how we upgraded 6,000,000 domains by default to get ready for the Quantum Future
2025-09-24
After a year since we started enabling Automatic SSL/TLS, we want to talk about these results, why they matter, and how we’re preparing for the next leap in Internet security....
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September 24, 2025 1:00 PM
Securing today for the quantum future: WARP client now supports post-quantum cryptography (PQC)
To prepare for a future where powerful quantum computers come online, we've upgraded our WARP client with post-quantum cryptography....
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September 19, 2025 1:44 PM
You don’t need quantum hardware for post-quantum security
Post-quantum cryptography protects against quantum threats using today’s hardware. Quantum tech like QKD may sound appealing, but it isn’t necessary or sufficient to secure organizations....
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March 21, 2025 1:00 PM
Prepping for post-quantum: a beginner’s guide to lattice cryptography
This post is a beginner's guide to lattices, the math at the heart of the transition to post-quantum (PQ) cryptography. It explains how to do lattice-based encryption and authentication from scratch....
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March 17, 2025 1:00 PM
Conventional cryptography is under threat. Upgrade to post-quantum cryptography with Cloudflare Zero Trust
We’re thrilled to announce that organizations can now protect their sensitive corporate network traffic against quantum threats by tunneling it through Cloudflare’s Zero Trust platform....
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November 07, 2024 2:00 PM
A look at the latest post-quantum signature standardization candidates
NIST has standardized four post-quantum signature schemes so far, and they’re not done yet: there are fourteen new candidates in the running for standardization....
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August 20, 2024 9:00 PM
NIST’s first post-quantum standards
NIST has published the first cryptographic standards for protecting against attacks from quantum computers. Learn what this means for you and your organization....
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March 05, 2024 2:00 PM
The state of the post-quantum Internet
Nearly 2% of all TLS 1.3 connections established with Cloudflare are secured with post-quantum cryptography. What once was the topic of futuristic tech demos will soon be the new security baseline....
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September 29, 2023 1:05 PM
Post-quantum cryptography goes GA
Cloudflare announces Post-Quantum Cryptography as a Generally Available system...
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September 29, 2023 1:00 PM
Cloudflare now uses post-quantum cryptography to talk to your origin server
Starting today, you can secure the connection between Cloudflare and your origin server with post-quantum cryptography...
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March 28, 2023 1:00 PM
Cloudflare’s commitment to the 2023 Summit for Democracy
Cloudflare is proud to participate in and contribute commitments to the 2023 Summit Summit for Democracy because we believe that everyone should have access to an Internet that is faster,...
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March 16, 2023 1:00 PM
Post-quantum crypto should be free, so we’re including it for free, forever
Cloudflare makes the most advanced cryptography free for everyone, and it’s in beta today...
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March 16, 2023 1:00 PM
No, AI did not break post-quantum cryptography
The recent news reports of AI cracking post-quantum cryptography are greatly exaggerated. In this blog, we take a deep dive into the world of side-channel attacks and how AI has been used for more than a decade already to aid it...
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October 03, 2022 1:01 PM
Defending against future threats: Cloudflare goes post-quantum
The future of a private and secure Internet is at stake; that is why today we have enabled post-quantum cryptography support for all our customers...
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October 03, 2022 1:00 PM
Introducing post-quantum Cloudflare Tunnel
Every connection we make post-quantum secure, we remove one opportunity for compromise: that's why we are announcing post-quantum Cloudflare Tunnel to help you secure every connection to our network...
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August 04, 2022 1:00 PM
Experiment with post-quantum cryptography today
The future is post quantum. Enable post-quantum key agreement on your test zone today and get a headstart...
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