diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java
new file mode 100644
index 00000000..57cee938
--- /dev/null
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java
@@ -0,0 +1,5 @@
+package com.pqt.server.tools.security;
+
+public interface IHashTool {
+    String hashAndSalt(String str, String salt);
+}
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java
new file mode 100644
index 00000000..ffb2ebca
--- /dev/null
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java
@@ -0,0 +1,30 @@
+package com.pqt.server.tools.security;
+
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class MD5HashTool implements IHashTool{
+    @Override
+    public String hashAndSalt(String input, String salt) {
+        String md5 = null;
+
+        if(input == null || salt == null) return null;
+
+        try {
+            String str = salt+input;
+            //Create MessageDigest object for MD5
+            MessageDigest digest = MessageDigest.getInstance("MD5");
+
+            //Update input string in message digest
+            digest.update(str.getBytes(), 0, str.length());
+
+            //Converts message digest value in base 16 (hex)
+            md5 = new BigInteger(1, digest.digest()).toString(16);
+
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        return md5;
+    }
+}