1 files changed, 38 insertions, 0 deletions
diff --git a/include/olm/memory.hh b/include/olm/memory.hh
new file mode 100644
index 0000000..b19c74b
--- /dev/null
+++ b/include/olm/memory.hh
@@ -0,0 +1,38 @@
+/* Copyright 2015 OpenMarket Ltd
+ *
+ * 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
+ *
+ *     http://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 <cstddef>
+#include <cstdint>
+
+namespace olm {
+
+/** Clear the memory held in the buffer */
+void unset(
+    void volatile * buffer, std::size_t buffer_length
+);
+
+/** Clear the memory backing an object */
+template<typename T>
+void unset(T & value) {
+    unset(reinterpret_cast<void volatile *>(&value), sizeof(T));
+}
+
+/** Check if two buffers are equal in constant time. */
+bool is_equal(
+    std::uint8_t const * buffer_a,
+    std::uint8_t const * buffer_b,
+    std::size_t length
+);
+
+} // namespace olm