passphrase ] [ -O option ] [ -t ecdsa | ecdsa-sk | ed25519 | ed25519-sk | rsa ] [ -w provider ] [ -Z cipher ... arguments, ssh-keygen will generate an Ed25519 key. ssh-keygen is al…protocol automatically, using one of the ECDSA, Ed25519 or RSA algorithms. The file ~/.ssh/authorized_keys lists ... /.ssh/id_ecdsa (ECDSA), ~/.ssh/id_ecdsa_sk (authenticator-hoste…scanned hosts. The possible values are “ecdsa”, “ed25519”, “ecdsa-sk”, “ed25519-sk”, or “rsa”. Multiple ... known_hosts : $ ssh-keyscan -t rsa,ecdsa,ed25519 -f ssh_hosts | \ sort -…/.ssh/id_rsa Contains the ECDSA, authenticator-hosted ECDSA, Ed25519, authenticator-hosted Ed25519 or RSA authentication identitysignature scheme name (e.g. "ed25519"). Multiple algorithms can be provided by separating them with