signature

var (
	InvalidInputParamsError        = errors.New("Invalid input params")
	NotExactTheSameCurveInputError = errors.New("The private keys of all the keys are not using the the same curve")
	TooSmallNumOfkeysError         = errors.New("The total num of keys should be greater than one")
	EmptyMessageError              = errors.New("Message to be sign should not be nil")
	InValidSignatureError          = errors.New("XuperSignature is invalid")
)