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

1 files changed, 11 insertions, 0 deletions

diff --git a/src/memory.cpp b/src/memory.cpp
new file mode 100644
index 0000000..14c95dd
--- /dev/null
+++ b/src/memory.cpp
@@ -0,0 +1,11 @@
+#include "axolotl/memory.hh"
+
+void axolotl::unset(
+    volatile void * buffer, std::size_t buffer_length
+) {
+    volatile char * pos = reinterpret_cast<volatile char *>(buffer);
+    volatile char * end = pos + buffer_length;
+    while (pos != end) {
+        *(pos++) = 0;
+    }
+}