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Lost me at "make an RSA key". RSA is ancient.



They also support P-256 and P-384 ECDSA, but I think 4096 bit RSA is ok for account key.

https://letsencrypt.org/docs/integration-guide/#supported-ke...


The triangle theorem of Pythagoras is thousands of years old. Still valid. RSA ... still secure.


yes, LetsEncrypt really should support ed25519. Sadly, they do not.




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