Empty the key/tweak containers which is used to signal the key was set

Fix exception message

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib/block/threefish/threefish.cpp b/src/lib/block/threefish/threefish.cpp
index 958175bb8..c8e2aff85 100644
--- a/src/lib/block/threefish/threefish.cpp
+++ b/src/lib/block/threefish/threefish.cpp
@@ -221,7 +221,7 @@ void Threefish_512::decrypt_n(const byte in[], byte out[], size_t blocks) const
 void Threefish_512::set_tweak(const byte tweak[], size_t len)
    {
    if(len != 16)
-      throw Exception("Unsupported twofish tweak length");
+      throw Exception("Threefish-512 requires 128 bit tweak");
    m_T.resize(3);
    m_T[0] = load_le<u64bit>(tweak, 0);
    m_T[1] = load_le<u64bit>(tweak, 1);
@@ -246,8 +246,8 @@ void Threefish_512::key_schedule(const byte key[], size_t)
 
 void Threefish_512::clear()
    {
-   zeroise(m_K);
-   zeroise(m_T);
+   zap(m_K);
+   zap(m_T);
    }
 
 }