diff --git a/native/cpp/CommonCpp/grpc/Client.h b/native/cpp/CommonCpp/grpc/Client.h
--- a/native/cpp/CommonCpp/grpc/Client.h
+++ b/native/cpp/CommonCpp/grpc/Client.h
@@ -46,6 +46,8 @@
   void setOnCloseCallback(std::function<void()> callback);
   void closeGetStream();
   void assignSetReadyStateCallback(std::function<void(SocketStatus)> callback);
+
+  std::string sessionSignature(std::string deviceID);
 };
 
 } // namespace network
diff --git a/native/cpp/CommonCpp/grpc/Client.cpp b/native/cpp/CommonCpp/grpc/Client.cpp
--- a/native/cpp/CommonCpp/grpc/Client.cpp
+++ b/native/cpp/CommonCpp/grpc/Client.cpp
@@ -127,5 +127,18 @@
   this->clientGetReadReactor->assignSetReadyStateCallback(callback);
 }
 
+std::string Client::sessionSignature(std::string deviceID) {
+  grpc::ClientContext context;
+  tunnelbroker::SessionSignatureRequest request;
+  tunnelbroker::SessionSignatureResponse response;
+
+  request.set_deviceid(deviceID);
+  auto status{this->stub_->SessionSignature(&context, request, &response)};
+  if (!status.ok()) {
+    return NULL;
+  }
+  return response.tosign();
+}
+
 } // namespace network
 } // namespace comm