Certificate Revocation Lists (CRLs) are a way for Certificate Authorities to announce to their relying parties (e.g., users validating the certificates) that a Certificate they issued should no longer be trusted. E.g., was revoked.
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Published 2017-08-18
We’re changing the methodology used to calculate the Let’s Encrypt Statistics page, primarily to better cope with the growth of Let’s Encrypt. Over the past several months it’s become clear that the existing methodology is less accurate than we had expected, over-counting the number of websites using Let’s... [read more]
Published 2017-07-10
I’ve been supplying the statistics for Let’s Encrypt since they’ve launched. In Q4 of 2016 their volume of certificates exceeded the ability of my database server to cope, and I moved it to an Amazon RDS instance.
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Published 2017-05-16
Our deprecation plan for the SHA-1 algorithm in the public Web, first announced in 2015, is drawing to a close. Today a team of researchers from CWI Amsterdam and Google revealed the first practical collision for SHA-1, affirming the insecurity of the algorithm and reinforcing our judgment that... [read more]
Published 2017-02-23
The Phoenix DevOps Meetup has asked me to do a walk-through of how to encrypt a website using Let’s Encrypt for their February meetup. I don’t believe this talk will be recorded, but for any locals who want to discuss PKI, I’ll be available after.
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Published 2016-12-19