Add new helper zap which zeros a vector, clears it, and then calls

shrink_to_fit to actually deallocate memory.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/block/rc2/rc2.cpp b/src/block/rc2/rc2.cpp
index 548c2f095..d7c76a7a6 100644
--- a/src/block/rc2/rc2.cpp
+++ b/src/block/rc2/rc2.cpp
@@ -139,6 +139,11 @@ void RC2::key_schedule(const byte key[], size_t length)
    load_le<u16bit>(&K[0], &L[0], 64);
    }
 
+void RC2::clear()
+   {
+   zap(K);
+   }
+
 /*
 * Return the code of the effective key bits
 */