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

shrink_to_fit to actually deallocate memory.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/block/cast/cast128.cpp b/src/block/cast/cast128.cpp
index d64523c8b..348f51220 100644
--- a/src/block/cast/cast128.cpp
+++ b/src/block/cast/cast128.cpp
@@ -134,6 +134,12 @@ void CAST_128::key_schedule(const byte key[], size_t length)
       RK[i] = RK32[i] % 32;
    }
 
+void CAST_128::clear()
+   {
+   zap(MK);
+   zap(RK);
+   }
+
 /*
 * S-Box Based Key Expansion
 */