diff --git a/jwt/jwt.go b/jwt/jwt.go
index 90285f1..acf5f90 100644
--- a/jwt/jwt.go
+++ b/jwt/jwt.go
@@ -1,6 +1,7 @@
 package jwt
 
 import (
+	"crypto/rsa"
 	"fmt"
 
 	"git.simts.cc/common/lib/types"
@@ -25,6 +26,23 @@ func Encode(values types.Data, key string) (string, error) {
 	return tokenString, nil
 }
 
+// EncodeRS256 jwt編碼
+func EncodeRS256(values types.Data, key *rsa.PrivateKey) (string, error) {
+	claims := jwt.MapClaims{}
+	for key, value := range values {
+		claims[key] = value
+	}
+
+	tokenString, err := jwt.
+		NewWithClaims(jwt.SigningMethodRS256, claims).
+		SignedString(key)
+	if err != nil {
+		return "", err
+	}
+
+	return tokenString, nil
+}
+
 // Decode jwt解碼
 func Decode(tokenString string, key string) (types.Data, error) {
 	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {