Crypto

March 25, 2020 12:00PM

Encrypting data at rest is vital for Cloudflare with more than 200 data centres across the world. In this post, we will investigate the performance of disk encryption on Linux and explain how we made it at least two times faster for ourselves and our customers!...

By 
• Ignat Korchagin

November 01, 2019 1:01PM

Time flies. The Heartbleed vulnerability was discovered just over five and a half years ago. Heartbleed became a household name not only because it was one of the first bugs with its own web page and logo, but because of what it revealed about the fragility of the Internet as a whole....

By 
• Nick Sullivan
• ,  Chris Broglie

November 01, 2019 1:00PM

Today we’re happy to announce support for a new cryptographic protocol that helps make it possible to deploy encrypted services in a global network while still maintaining fast performance and tight control of private keys: Delegated Credentials for TLS....

By 
• Nick Sullivan
• ,  Watson Ladd

October 31, 2019 1:00PM

Several months ago we announced that we were providing a new public time service. Part of what we were providing was the first major deployment of the new Network Time Security protocol, with a newly written implementation of NTS in Rust....

By 
• Watson Ladd
• ,  Pop Chunhapanya

October 30, 2019 1:00PM

In June, we announced a wide-scale post-quantum experiment with Google. We implemented two post-quantum (i.e., not yet known to be broken by quantum computers) key exchanges, integrated them into our TLS stack and deployed the implementation on our edge servers and in Chrome Canary clients....

By 
• Kris Kwiatkowski
• ,  Luke Valenta

October 29, 2019 1:00PM

The Domain Name System (DNS) is the address book of the Internet. When you visit cloudflare.com or any other site, your browser will ask a DNS resolver for the IP address where the website can be found. Unfortunately, these DNS queries and answers are typically unprotected....

By 
• Peter Wu

October 28, 2019 1:00PM

At Cloudflare, we are committed to supporting and developing new privacy-preserving technologies that benefit all Internet users. In November 2017, we announced server-side support for the Privacy Pass protocol, a piece of work developed in collaboration with the academic community....

By 
• Alex Davidson

October 27, 2019 11:00PM

Halloween season is upon us. This week we’re sharing a series of blog posts about work being done at Cloudflare involving cryptography, one of the spookiest technologies around....

By 
• Nick Sullivan

June 21, 2019 2:00PM

Cloudflare has always been a leader in deploying secure versions of insecure Internet protocols and making them available for free for anyone to use. In 2014, we launched one of the world’s first free, secure HTTPS service (Universal SSL) to go along with our existing free HTTP plan....

By 
• Aanchal Malhotra