Ssh-keygen -i

Convert or import key:

ssh-keygen -i -f id_rsa_putty.pub > id_rsa.pub

See also

• ssh-keygen [ -R, -t | -p | -i | -y | -f | ~/.ssh/id_rsa | --help ] ~/.ssh/known_hosts
• SSH: ssh, TLS, .ppk, .pem, .crt, .pub, ED25519, Key exchange method (KEX), public key, private key, ssh -Q kex, IAMUserSSHKeys, known_hosts, ssh tunnel, Dropbear