Added more methods from RFC 7519 standard.

jwtauth.go

@@ -142,11 +142,11 @@ func (ja *JWTAuth) ValidateOptions() []jwt.ValidateOption {
 	return ja.validateOptions
 }
 
-func (ja *JWTAuth) sign(token jwt.Token) ([]byte, error) {
+func (ja *JWTAuth) Sign(token jwt.Token) ([]byte, error) {
 	return jwt.Sign(token, jwt.WithKey(ja.alg, ja.signKey))
 }
 
-func (ja *JWTAuth) parse(payload []byte) (jwt.Token, error) {
+func (ja *JWTAuth) Parse(payload []byte) (jwt.Token, error) {
 	// we disable validation here because we use jwt.Validate to validate tokens
 	return jwt.Parse(payload, ja.verifier, jwt.WithValidate(false))
 }
@@ -253,6 +253,31 @@ func SetExpiryIn(claims map[string]interface{}, tm time.Duration) {
 	claims["exp"] = ExpireIn(tm)
 }
 
+// Set subject ("sub") in the claims
+func SetSub(claims map[string]interface{}, sub string) {
+	claims["sub"] = sub
+}
+
+// Set audience ("aud") in the claims
+func SetAudience(claims map[string]interface{}, aud string) {
+	claims["aud"] = aud
+}
+
+// Set JWT ID ("jti") in the claims
+func SetJwtId(claims map[string]interface{}, jti string) {
+	claims["jti"] = jti
+}
+
+// Set not Before ("nbf") in the claims
+func SetNotBefore(claims map[string]interface{}, nbf time.Time) {
+	claims["nbf"] = nbf.UTC().Unix()
+}
+
+// Add custom additional claim in the claims (For private/public claims, RFC 7519)
+func SetXclaim(claims map[string]interface{}, claimName string, claimValue interface{}) {
+	claims[claimName] = claimValue
+}
+
 // TokenFromCookie tries to retreive the token string from a cookie named
 // "jwt".
 func TokenFromCookie(r *http.Request) string {
@@ -292,7 +317,7 @@ func TokenFromQuery(r *http.Request) string {
 // contextKey is a value for use with context.WithValue. It's used as
 // a pointer so it fits in an interface{} without allocation. This technique
 // for defining context keys was copied from Go 1.7's new use of context in net/http.
-type contextKey struct {
+type ContextKey struct {
 	name string
 }