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-rw-r--r--src/lib/block/threefish_512/threefish_512.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/lib/block/threefish_512/threefish_512.cpp b/src/lib/block/threefish_512/threefish_512.cpp
index 0e6ba8889..7c368b409 100644
--- a/src/lib/block/threefish_512/threefish_512.cpp
+++ b/src/lib/block/threefish_512/threefish_512.cpp
@@ -239,8 +239,8 @@ void Threefish_512::decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks)
void Threefish_512::set_tweak(const uint8_t tweak[], size_t len)
{
- if(len != 16)
- throw Exception("Threefish-512 requires 128 bit tweak");
+ BOTAN_ARG_CHECK(len == 16, "Threefish-512 requires 128 bit tweak");
+
m_T.resize(3);
m_T[0] = load_le<uint64_t>(tweak, 0);
m_T[1] = load_le<uint64_t>(tweak, 1);