From b2d1908ed4ebcfd6339c9c074839f38890243489 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Fri, 10 Apr 2020 03:26:59 -0400
Subject: overwrite locked memory before dropping it

---
 src/locked.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/locked.rs')

diff --git a/src/locked.rs b/src/locked.rs
index 4915232..52678dc 100644
--- a/src/locked.rs
+++ b/src/locked.rs
@@ -31,6 +31,18 @@ impl Vec {
     pub fn truncate(&mut self, len: usize) {
         self.data.truncate(len);
     }
+
+    pub fn shred(&mut self) {
+        self.data.truncate(0);
+        self.data.extend(std::iter::repeat(0));
+        self.data.truncate(0);
+    }
+}
+
+impl Drop for Vec {
+    fn drop(&mut self) {
+        self.shred();
+    }
 }
 
 pub struct Password {
-- 
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