diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/util/HashUtil.java b/agents-flex-core/src/main/java/com/agentsflex/core/util/HashUtil.java
new file mode 100644
index 0000000..5aa1692
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/util/HashUtil.java
@@ -0,0 +1,70 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.util;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.Base64;
+
+public class HashUtil {
+    private static final char[] HEX_DIGITS = "0123456789abcdef".toCharArray();
+    private static final char[] CHAR_ARRAY = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
+
+    public static String md5(String srcStr) {
+        return hash("MD5", srcStr);
+    }
+
+
+    public static String sha256(String srcStr) {
+        return hash("SHA-256", srcStr);
+    }
+
+    public static String hmacSHA256ToBase64(String content, String secret) {
+        try {
+            Mac hmacSHA256 = Mac.getInstance("HmacSHA256");
+            SecretKeySpec secretKey = new SecretKeySpec(secret.getBytes(StandardCharsets.UTF_8), "HmacSHA256");
+            hmacSHA256.init(secretKey);
+            byte[] bytes = hmacSHA256.doFinal(content.getBytes(StandardCharsets.UTF_8));
+            return Base64.getEncoder().encodeToString(bytes);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static String hash(String algorithm, String srcStr) {
+        try {
+            MessageDigest md = MessageDigest.getInstance(algorithm);
+            byte[] bytes = md.digest(srcStr.getBytes(StandardCharsets.UTF_8));
+            return bytesToHex(bytes);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static String bytesToHex(byte[] bytes) {
+        StringBuilder ret = new StringBuilder(bytes.length * 2);
+        for (byte aByte : bytes) {
+            ret.append(HEX_DIGITS[(aByte >> 4) & 0x0f]);
+            ret.append(HEX_DIGITS[aByte & 0x0f]);
+        }
+        return ret.toString();
+    }
+
+
+
+}