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Decreasing Certificate Lifetimes to 45 Days (letsencrypt.org)

submitted 6 months ago by artiman@piefed.social to c/selfhosted@lemmy.world

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Let’s Encrypt will be reducing the validity period of the certificates we issue. We currently issue certificates valid for 90 days, which will be cut in half to 45 days by 2028.
This change is being made along with the rest of the industry, as required by the CA/Browser Forum Baseline Requirements, which set the technical requirements that we must follow. All publicly-trusted Certificate Authorities like Let’s Encrypt will be making similar changes. Reducing how long certificates are valid for helps improve the security of the internet, by limiting the scope of compromise, and making certificate revocation technologies more efficient.

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[–] Atemu@lemmy.ml 1 points 6 months ago

Thanks for the explanation!

Though it ought to be possible to only respond with the new self-signed cert when LE does the challenge and with the previous, properly signed cert otherwise.

I found https://codeberg.org/neilpang/acme.sh/wiki/TLS-ALPN-without-downtime which demonstrates one method to achieve that but I lack practical experience judge whether that's optimal.