The article mentions ECDSA, but doesn't mention Ed25519, which is supported since OpenSSH 6.5: https://lwn.net/Articles/583485/ https://lwn.net/Articles/583485/

The article mentions ECDSA, but doesn't mention Ed25519, which is supported since OpenSSH 6.5: https://lwn.net/Articles/583485/ https://lwn.net/Articles/583485/ As a bonus Ed25519 keys unconditionally use bcrypt for protecting the private key