Category Archives: https

Real-Time Certificate Info – 5,560,000,000 KeyChest Index

We have finally completed a GLOBAL certificate look-up table for real-time notifications in our re-designed KeyChest service. KeyChest has been using an external service to check for new certificates. This has become unsustainable due to the number of users and certificates we monitor.

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Let’s Encrypt uptime is 99.9% — or 98.8% without defects in 2017

As I was collecting reliability data for several PKI systems, I included Let’s Encrypt as it’s by far the biggest PKI system I was aware of. It provides its status data and its history at https://letsencrypt.status.io and here’s my informal analysis of its production systems.

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Let’s Encrypt in the spotlight

We have compiled all practical information we could find and written it up at Numbers you need to know. It’s a long list of restrictions, rate limits, and other useful information to keep in mind.  Here’s a few selected points that we found interesting. Big thanks to schoen from Certbot/EFF for pointing out numerous inaccuracies.

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