diff --git a/server/tools/protobuild/ss_proto.proto b/server/tools/protobuild/ss_proto.proto
index 7b6952f..1c6ed51 100644
--- a/server/tools/protobuild/ss_proto.proto
+++ b/server/tools/protobuild/ss_proto.proto
@@ -24,6 +24,7 @@ message SS_CMKcpHandshake
     optional string account_id = 2; //账号id
     optional string session_id = 3; //session id
     optional string team_uuid = 4; //保留
+    optional int32 secret_key_place = 5; //私钥存放位置 0：存在用户协议前(老) 1：存在kcp底层协议头之后(新)
 }
 
 message SS_SMKcpHandshake
diff --git a/server/wsproxy/kcpsession.cc b/server/wsproxy/kcpsession.cc
index 3010fc3..521f8b3 100644
--- a/server/wsproxy/kcpsession.cc
+++ b/server/wsproxy/kcpsession.cc
@@ -127,3 +127,13 @@ void KcpSession::DecodeUserPacket(char* buf, int& offset, unsigned int buflen)
         f8::UdpLog::Instance()->Warning("收到kcp client非法数据包", {});
     }
 }
+
+void KcpSession::SetSecretKeyPlace(int secret_key_place)
+{
+    secret_key_place_ = secret_key_place;
+}
+
+int KcpSession::GetSecretKeyPlace()
+{
+    return secret_key_place_;
+}
diff --git a/server/wsproxy/kcpsession.h b/server/wsproxy/kcpsession.h
index db29158..425a218 100644
--- a/server/wsproxy/kcpsession.h
+++ b/server/wsproxy/kcpsession.h
@@ -19,6 +19,8 @@ public:
     int GetSocketHandle() { return socket_handle_; }
     long long GetSecretKey() { return secret_key_; }
     void* GetSecretKeyDataPtr() { return &secret_key_; }
+    void SetSecretKeyPlace(int secret_key_place);
+    int GetSecretKeyPlace();
 
     void SendClientMsg(char* buf, int buf_len);
     virtual void OnRecvPacket(a8::UdpPacket* pkt) override;
@@ -36,6 +38,7 @@ private:
     void UpdateInput();
 
 private:
+    int secret_key_place_ = 0;
     int socket_handle_ = 0;
     long long secret_key_ = 0;
     ikcpcb* kcp_ = nullptr;
diff --git a/server/wsproxy/longsession.cc b/server/wsproxy/longsession.cc
index 2dbcb3b..3ef3db0 100644
--- a/server/wsproxy/longsession.cc
+++ b/server/wsproxy/longsession.cc
@@ -25,3 +25,13 @@ void LongSession::UpdatePing()
 {
     last_ping_tick_ = a8::XGetTickCount();
 }
+
+void LongSession::SetSecretKeyPlace(int secret_key_place)
+{
+    kcp_session_->SetSecretKeyPlace(secret_key_place);
+}
+
+int LongSession::GetSecretKeyPlace()
+{
+    return kcp_session_->GetSecretKeyPlace();
+}
diff --git a/server/wsproxy/longsession.h b/server/wsproxy/longsession.h
index 4218829..02a657d 100644
--- a/server/wsproxy/longsession.h
+++ b/server/wsproxy/longsession.h
@@ -17,6 +17,8 @@ class LongSession
 
     std::shared_ptr<KcpSession> GetKcpSession() { return kcp_session_; }
     void UpdatePing();
+    void SetSecretKeyPlace(int secret_key_place);
+    int GetSecretKeyPlace();
 
  private:
     long long last_ping_tick_ = 0;