Function convertToSSH

command/crypto/key/format.go:393–422

(ctx *cli.Context, key interface{})

}

func convertToSSH(ctx *cli.Context, key interface{}) ([]byte, error) {
	switch key.(type) {
	case *ecdsa.PublicKey, *rsa.PublicKey, ed25519.PublicKey:
		k, err := ssh.NewPublicKey(key)
		if err != nil {
			return nil, errors.Wrap(err, "error converting public key")
		}
		return ssh.MarshalAuthorizedKey(k), nil
	case *rsa.PrivateKey, *ecdsa.PrivateKey, ed25519.PrivateKey:
		opts := []pemutil.Options{
			pemutil.WithOpenSSH(true),
		}
		if !ctx.Bool("no-password") {
			if passFile := ctx.String("password-file"); passFile != "" {
				opts = append(opts, pemutil.WithPasswordFile(passFile))
			} else {
				opts = append(opts, pemutil.WithPasswordPrompt("Please enter the password to encrypt the private key", func(s string) ([]byte, error) {
					return ui.PromptPassword(s, ui.WithValidateNotEmpty())
				}))
			}
		}
		block, err := pemutil.Serialize(key, opts...)
		if err != nil {
			return nil, err
		}
		return pem.EncodeToMemory(block), nil
	default:
		return nil, errors.Errorf("unsupported key type %T", key)
	}
}

func convertToJWK(ctx *cli.Context, key interface{}) ([]byte, error) {
	b, err := json.Marshal(&jose.JSONWebKey{Key: key})