New creates a new proxy instance and wraps it as an http.Handler.

ErrAuthFailed is returned when jwt verification fails.

ErrMissingSecret is returned when the proxy does not load both required secrets.

ErrTokenNotValid is returned when the jwt is not valid.

ErrUnexpectedSigningMethod is returned when the signing method used by the given JWT is not HMAC.

Config contains the run time parameters for the proxy.