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cloud.google.com·6h ago
Security
Cloudflare Blog·Sep 8·5 min read
Automatic Key Exchange: faster, post-quantum secure origin handshakes for 45 billion daily connections (and counting)
TL;DR
Cloudflare has introduced Automatic Key Exchange, which optimizes TLS 1.3 handshakes by automatically selecting the best key agreement algorithm, significantly reducing connection latency and enhancing quantum security.
✦ Why It Matters
Enable Automatic Key Exchange in your Cloudflare settings to enhance security and reduce latency.
Key Takeaways
- Enable Automatic Key Exchange for seamless post-quantum security.
- Monitor your origin's key agreement preferences in the Cloudflare dashboard.
- Understand the implications of quantum threats on current encryption methods.
- Regularly check for updates on your origin's TLS capabilities.
How It Works
Cloudflare conducts lightweight TLS handshakes to probe each origin's supported key agreement algorithms. This allows them to dynamically select the strongest algorithm for each connection, maximizing post-quantum security while minimizing latency.