SSH ED25519


ED25519 is a high-speed high-security public-key signature system. It uses elliptic curve cryptography and it is supported by OpenSSH since 6.5.

ED25519 generates small keys of 32 bytes and allows fast single-signature/batch verification, very fast signing and fast key generation.

ssh-keygen -t ed25519

ED25519 should be prefered over RSA, DSA and ECDSA.