git ssh-keygen -t ed25519 -C "test@163.com" Generating public/private ed25519 key pair. Enter file inwhich to save the key (/home/test/.ssh/id_ed25519): [Press enter] Created directory '/home/test/.ssh'. Enter passphrase (empty for no passphrase): [Press enter] Enter same passphrase again: [Press enter] Your identification has been saved in /home/test/.ssh/id_ed25519 Your public key has been saved in /home/test/.ssh/id_ed25519.pub The key fingerprint is: SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx test@163.com The key's randomart image is: +--[ED25519 256]--+ | | | | | | | | | | | | | | | | | | +----[SHA256]-----+