code: func algoString(algo string) string {
  	switch algo {
  	case gossh.KeyAlgoRSA:
  		return "RSA"
  	case gossh.KeyAlgoDSA:
  		return "DSA"
  	case gossh.KeyAlgoECDSA256, gossh.KeyAlgoECDSA384, gossh.KeyAlgoECDSA521:
  		return "ECDSA"
  	}
  	return algo
  }
docs: // algoString returns a short-name representation of an algorithm type