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

shrink_to_fit to actually deallocate memory.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/block/aes_ssse3/aes_ssse3.cpp b/src/block/aes_ssse3/aes_ssse3.cpp
index 648f96d67..476b004bb 100644
--- a/src/block/aes_ssse3/aes_ssse3.cpp
+++ b/src/block/aes_ssse3/aes_ssse3.cpp
@@ -406,6 +406,12 @@ void AES_128_SSSE3::key_schedule(const byte keyb[], size_t)
    _mm_storeu_si128(DK_mm, aes_schedule_mangle_last_dec(key));
    }
 
+void AES_128_SSSE3::clear()
+   {
+   zap(EK);
+   zap(DK);
+   }
+
 /*
 * AES-192 Encryption
 */
@@ -507,6 +513,11 @@ void AES_192_SSSE3::key_schedule(const byte keyb[], size_t)
       }
    }
 
+void AES_192_SSSE3::clear()
+   {
+   zap(EK);
+   zap(DK);
+   }
 
 /*
 * AES-256 Encryption
@@ -588,4 +599,10 @@ void AES_256_SSSE3::key_schedule(const byte keyb[], size_t)
    _mm_storeu_si128(DK_mm + 0, aes_schedule_mangle_last_dec(key2));
    }
 
+void AES_256_SSSE3::clear()
+   {
+   zap(EK);
+   zap(DK);
+   }
+
 }