diff --git a/backends/twitter/libtwitcurl/base64.h b/backends/twitter/libtwitcurl/base64.h
new file mode 100644
index 0000000000000000000000000000000000000000..639e696c52d0cfd090acc44bf14bd56f8e3265fc
--- /dev/null
+++ b/backends/twitter/libtwitcurl/base64.h
@@ -0,0 +1,4 @@
+#include <string>
+
+std::string base64_encode(unsigned char const* , unsigned int len);
+std::string base64_decode(std::string const& s);
\ No newline at end of file