diff --git a/src/framework/luafunctions.cpp b/src/framework/luafunctions.cpp
index e664d8ad..915f2ba4 100644
--- a/src/framework/luafunctions.cpp
+++ b/src/framework/luafunctions.cpp
@@ -645,6 +645,7 @@ void Application::registerLuaFunctions()
     g_lua.bindClassMemberFunction<Protocol>("setConnection", &Protocol::setConnection);
     g_lua.bindClassMemberFunction<Protocol>("send", &Protocol::send);
     g_lua.bindClassMemberFunction<Protocol>("recv", &Protocol::recv);
+    g_lua.bindClassMemberFunction<Protocol>("setXteaKey", &Protocol::setXteaKey);
     g_lua.bindClassMemberFunction<Protocol>("getXteaKey", &Protocol::getXteaKey);
     g_lua.bindClassMemberFunction<Protocol>("generateXteaKey", &Protocol::generateXteaKey);
     g_lua.bindClassMemberFunction<Protocol>("enableXteaEncryption", &Protocol::enableXteaEncryption);
diff --git a/src/framework/net/protocol.cpp b/src/framework/net/protocol.cpp
index 321fe8ad..66bb50a5 100644
--- a/src/framework/net/protocol.cpp
+++ b/src/framework/net/protocol.cpp
@@ -151,6 +151,14 @@ void Protocol::generateXteaKey()
     m_xteaKey[3] = unif(eng);
 }
 
+void Protocol::setXteaKey(uint32 a, uint32 b, uint32 c, uint32 d)
+{
+    m_xteaKey[0] = a;
+    m_xteaKey[1] = b;
+    m_xteaKey[2] = c;
+    m_xteaKey[3] = d;
+}
+
 std::vector<int> Protocol::getXteaKey()
 {
     std::vector<int> xteaKey;
diff --git a/src/framework/net/protocol.h b/src/framework/net/protocol.h
index 468f8cef..139cefed 100644
--- a/src/framework/net/protocol.h
+++ b/src/framework/net/protocol.h
@@ -46,6 +46,7 @@ public:
     void setConnection(const ConnectionPtr& connection) { m_connection = connection; }
 
     void generateXteaKey();
+    void setXteaKey(uint32 a, uint32 b, uint32 c, uint32 d);
     std::vector<int> getXteaKey();
     void enableXteaEncryption() { m_xteaEncryptionEnabled = true; }