code: func New(secretB32 string) (*TOTP, error) {
  	// Decode the secret
  	key, err := base32.StdEncoding.DecodeString(secretB32)
  	if nil != err {
  		return nil, fmt.Errorf("Error encountered base32 decoding secret: %v", err.Error())
  	}
  
  	return &TOTP{key, 6, 30}, nil
  }
docs: // Generate a new Time Based One Time Password with the given secret (a b32 encoded key)