I see Let’s Encrypt has Account Key Roll Over (key-change) available in its directory https://acme-v01.api.letsencrypt.org/directory
Is there a tool for doing this, or do I have to construct the request manually?
acme4j seems to have an implementation for this endpoint. I’m not aware of any other clients with support for key-change.
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When I needed this, I saw multiple people looking for a solution without one being available.
I made a tool to do this. It’s pretty rough, but it’s better than writing your own after a credential compromise. Here’s the repo: https://github.com/kf6nux/letsencrypt-account-key-change
Hopefully this thread will turn up in a google search result for anyone looking to change their Let’s Encrypt Account Key in the future.
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