pw_tls_client: Add fake entropy backend
Add a default fake entropy for demo and test purpose.
Change-Id: Icfa4d91cfbdb5590d980656792793755803a0c4c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/51402
Commit-Queue: Rob Mohr <mohrr@google.com>
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Reviewed-by: Ali Zhang <alizhang@google.com>
diff --git a/pw_tls_client/fake_entropy.cc b/pw_tls_client/fake_entropy.cc
new file mode 100644
index 0000000..8205031
--- /dev/null
+++ b/pw_tls_client/fake_entropy.cc
@@ -0,0 +1,28 @@
+// Copyright 2021 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "pw_log/log.h"
+#include "pw_tls_client/entropy.h"
+
+namespace pw::tls_client {
+
+Status GetRandomBytes(ByteSpan) {
+ PW_LOG_INFO(
+ "Warning. The TLS client is using a fake enropy source that does "
+ "nothing. This should only be used for demo and test purpose."
+ "Production code shall not use it");
+ return OkStatus();
+}
+
+} // namespace pw::tls_client