Base64 encoding using OpenSSL

Summary: This change adds a function to base64 encode. It is used to encode the CSR which gets added to the connection url.

Reviewed By: passy

Differential Revision: D31570706

fbshipit-source-id: 8356550fe87ae3ac6aae8616744a9339cf69b511

xplat/Flipper/FlipperBase64.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <string>
+
+namespace facebook {
+namespace flipper {
+
+class Base64 {
+ public:
+  static std::string encode(const std::string& input);
+};
+
+} // namespace flipper
+} // namespace facebook