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

shrink_to_fit to actually deallocate memory.

2 files changed, 6 insertions, 1 deletions

diff --git a/src/block/kasumi/kasumi.cpp b/src/block/kasumi/kasumi.cpp
index ae21338c6..69f146ebb 100644
--- a/src/block/kasumi/kasumi.cpp
+++ b/src/block/kasumi/kasumi.cpp
@@ -226,4 +226,9 @@ void KASUMI::key_schedule(const byte key[], size_t)
       }
    }
 
+void KASUMI::clear()
+   {
+   zap(EK);
+   }
+
 }
diff --git a/src/block/kasumi/kasumi.h b/src/block/kasumi/kasumi.h
index 571085612..b91a2eb77 100644
--- a/src/block/kasumi/kasumi.h
+++ b/src/block/kasumi/kasumi.h
@@ -21,7 +21,7 @@ class BOTAN_DLL KASUMI : public Block_Cipher_Fixed_Params<8, 16>
       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
 
-      void clear() { EK.clear(); }
+      void clear();
       std::string name() const { return "KASUMI"; }
       BlockCipher* clone() const { return new KASUMI; }
    private: