Try to ensure the compiler cannot optimise away attempts to erase secrets from memory

1 files changed, 17 insertions, 0 deletions

diff --git a/include/axolotl/memory.hh b/include/axolotl/memory.hh
new file mode 100644
index 0000000..7749c54
--- /dev/null
+++ b/include/axolotl/memory.hh
@@ -0,0 +1,17 @@
+#include <cstddef>
+
+namespace axolotl {
+
+/** Clear the memory held in the buffer */
+void unset(
+    volatile void * buffer, std::size_t buffer_length
+);
+
+/** Clear the memory backing an object */
+template<typename T>
+void unset(T & value) {
+    unset(reinterpret_cast<volatile void *>(&value), sizeof(T));
+}
+
+
+} // namespace axolotl