diff --git a/include/librustzcash.h b/include/librustzcash.h
new file mode 100644
index 000000000..21e7464c0
--- /dev/null
+++ b/include/librustzcash.h
@@ -0,0 +1,8 @@
+#ifndef LIBRUSTZCASH_INCLUDE_H_
+#define LIBRUSTZCASH_INCLUDE_H_
+
+extern "C" {
+	uint64_t librustzcash_xor(uint64_t a, uint64_t b);
+}
+
+#endif // LIBRUSTZCASH_INCLUDE_H_