}

func (data EncryptedData) Value() (driver.Value, error) {
	if len(data) > 0 && data[0] == 'x' {
		// needed to test failures
		return nil, errors.New("Should not start with 'x'")
	}

	// prepend asterisks
	return append([]byte("***"), data...), nil
}

type Num int64

func (i *Num) Scan(src interface{}) error {
	switch s := src.(type) {
	case []byte:
		n, _ := strconv.Atoi(string(s))