goanna/cookie_signer.go
func (c CookieSigner) EncodeCookie(cookie *http.Cookie) {
	cookie.Value = c.EncodeValue(cookie.Value)
}
func (c CookieSigner) EncodeCookie(cookie *http.Cookie) {
	cookie.Value = c.EncodeValue(cookie.Value)
}
// EncodeCookie signs and encodes the cookie