diff --git a/src/main/java/com/fasc/open/api/utils/crypt/FddCryptUtil.java b/src/main/java/com/fasc/open/api/utils/crypt/FddCryptUtil.java
index 404d5485fd35f3e8822eb575d3e952c4743b4b85..e8404025eb783d2a345301f786da89e6a3b2bf7e 100644
--- a/src/main/java/com/fasc/open/api/utils/crypt/FddCryptUtil.java
+++ b/src/main/java/com/fasc/open/api/utils/crypt/FddCryptUtil.java
@@ -36,6 +36,19 @@ public class FddCryptUtil {
         return DatatypeConverter.printHexBinary(d).toLowerCase();
     }
 
+    /**
+     * @param sortParam 排序后得参数字符串
+     * @param timestamp 时间戳
+     * @param appSecret 应用秘钥
+     * @return 签名值
+     * @throws Exception 异常
+     */
+    public static String sign(String sortParam,
+                              String timestamp,
+                              String appSecret) throws Exception {
+        return sign(sortParam, String.valueOf(timestamp), appSecret);
+    }
+
     /**
      * @param sortParam 排序后得参数字符串
      * @param timestamp 时间戳