SSH encryption type in 2025. Which is better?

[Alexandr Kirilov]

Hello!

Just got curious about which type of SSH key must be used for security reasons in 2025? RSA? ED25519? Or any other?

 

[zirias@]

There's nothing inherently wrong with RSA security if used with sufficiently large keys. Ed25519 is typically preferred these days IF available on all participating systems because it can offer comparable security with much smaller keys.