diff --git a/src/main/java/com/yxt/ss/gateway/api/utils/SignatureUtil.java b/src/main/java/com/yxt/ss/gateway/api/utils/SignatureUtil.java
index 9c33289..dafe914 100644
--- a/src/main/java/com/yxt/ss/gateway/api/utils/SignatureUtil.java
+++ b/src/main/java/com/yxt/ss/gateway/api/utils/SignatureUtil.java
@@ -11,21 +11,56 @@ import java.util.Map;
 import java.util.TreeMap;
 
 /**
- * @description: 生成签名
+ * @description: 签名工具
  * @author: dimengzhe
  * @date: 2024/11/28
  **/
 public class SignatureUtil {
+    /**
+     * 验证签名是否正确
+     *
+     * @param parameters 请求参数
+     * @param secret     私钥，生成签名时使用，不允许在请求参数中出现
+     * @return 是否验证通过
+     */
+    public static ResultBean<Boolean> validateSignature(Map<String, String> parameters, String secret) {
+        ResultBean<Boolean> rb = ResultBean.fireFail();
+        boolean valid = false;
+        //原签名
+        String _sign = parameters.get("_sign");
+        //3、检验签名，成功则继续调用接口，失败返回失败信息。
+        parameters.remove("_sign");
+        try {
+            // 3.1. 重新生成签名
+            String calculatedSignature = SignatureUtil.generateSignature(parameters, secret);
+
+            // 3.2. 使用固定时间比较方式验证签名
+            valid = MessageDigest.isEqual(
+                    calculatedSignature.getBytes("UTF-8"),
+                    _sign.getBytes("UTF-8")
+            );
+            if (!valid) {
+                return rb.setMsg("签名不正确");
+            }
 
+        } catch (UnsupportedEncodingException e) {
+            return rb.setMsg("Encoding error: " + e.getMessage());
+        } catch (NoSuchAlgorithmException e) {
+            return rb.setMsg("Algorithm error: " + e.getMessage());
+        } catch (Exception e) {
+            return rb.setMsg("Unexpected error: " + e.getMessage());
+        }
+        return rb.success().setData(valid);
+    }
 
     /**
-     * 生成请求签名
+     * 生成签名
      *
      * @param parameters 请求参数
-     * @param secret     密钥
-     * @return 签名
+     * @param secret     私钥
+     * @return 签名字符串
      */
-    public static String generateSignature(Map<String, String> parameters, String secret) throws UnsupportedEncodingException, NoSuchAlgorithmException {
+    private static String generateSignature(Map<String, String> parameters, String secret) throws UnsupportedEncodingException, NoSuchAlgorithmException {
         //1.对参数进行排序
         Map<String, String> treeMap = new TreeMap<>(parameters);
         // 2. 拼接参数字符串
@@ -44,7 +79,7 @@ public class SignatureUtil {
      * @param tree 排序后的参数
      * @return 拼接后的参数字符串
      */
-    public static String joinParameters(Map<String, String> tree) throws UnsupportedEncodingException {
+    private static String joinParameters(Map<String, String> tree) throws UnsupportedEncodingException {
         StringBuilder builder = new StringBuilder();
         for (Map.Entry<String, String> entry : tree.entrySet()) {
             if (builder.length() > 0) {
@@ -57,12 +92,12 @@ public class SignatureUtil {
     }
 
     /**
-     * 计算 MD5
+     * MD5加密
      *
      * @param content 要计算 MD5 的字符串
      * @return MD5 值
      */
-    public static String md5(String content) throws NoSuchAlgorithmException {
+    private static String md5(String content) throws NoSuchAlgorithmException {
         MessageDigest md = MessageDigest.getInstance("MD5");
         byte[] bytes = md.digest(content.getBytes());
         StringBuilder sb = new StringBuilder();
@@ -72,40 +107,5 @@ public class SignatureUtil {
         return sb.toString();
     }
 
-    /**
-     * 验证签名是否正确
-     *
-     * @param parameters 请求参数
-     * @param secret     密钥
-     * @return 是否验证通过
-     */
-    public static ResultBean<Boolean> validateSignature(Map<String, String> parameters, String secret) {
-        ResultBean<Boolean> rb = ResultBean.fireFail();
-        boolean valid = false;
-        //原签名
-        String _sign = parameters.get("_sign");
-        //3、检验签名，成功则继续调用接口，失败返回失败信息。
-        parameters.remove("_sign");
-        try {
-            // 3.1. 重新生成签名
-            String calculatedSignature = SignatureUtil.generateSignature(parameters, secret);
-
-            // 3.2. 使用固定时间比较方式验证签名
-            valid = MessageDigest.isEqual(
-                    calculatedSignature.getBytes("UTF-8"),
-                    _sign.getBytes("UTF-8")
-            );
-            if (!valid) {
-                return rb.setMsg("签名不正确");
-            }
 
-        } catch (UnsupportedEncodingException e) {
-            return rb.setMsg("Encoding error: " + e.getMessage());
-        } catch (NoSuchAlgorithmException e) {
-            return rb.setMsg("Algorithm error: " + e.getMessage());
-        } catch (Exception e) {
-            return rb.setMsg("Unexpected error: " + e.getMessage());
-        }
-        return rb.success().setData(valid);
-    }
 }