Let's Encrypt: 64-Day Certificate Lifetimes Coming Feb 2027

allddd 48 points 24 comments October 08, 2026
letsencrypt.org · View on Hacker News

Discussion Highlights (3 comments)

bombcar

At what point are we minting new certificates for each connection, and what does that mean for the original design?

doublerabbit

I recently purchased an yearly wildcard SSL certificate and was notified that the certificate needs to be resigned every 200 days, why!?

schoen

I've worked with Let's Encrypt (I mean inside the organization, not just as an end user) a bunch and I feel like I often know or can guess rationales for things, but while I know "why short-lived certs", I surely don't know "why 64". Is it because it's a round number in binary?

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