diff options
Diffstat (limited to 'src/lib/block')
| -rw-r--r-- | src/lib/block/aria/aria.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/lib/block/aria/aria.cpp b/src/lib/block/aria/aria.cpp index e92580361..2a02330c9 100644 --- a/src/lib/block/aria/aria.cpp +++ b/src/lib/block/aria/aria.cpp @@ -280,12 +280,13 @@ void transform(const uint8_t in[], uint8_t out[], size_t blocks, } // n-bit right shift of Y XORed to X -template <unsigned int N> +template<size_t N> inline void ARIA_ROL128(const uint32_t X[4], const uint32_t Y[4], uint32_t KS[4]) { // MSVC is not generating a "rotate immediate". Constify to help it along. - static const unsigned int Q = 4 - (N / 32); - static const unsigned int R = N % 32; + static const size_t Q = 4 - (N / 32); + static const size_t R = N % 32; + static_assert(R > 0 && R < 32, "Rotation in range for type"); KS[0] = (X[0]) ^ ((Y[(Q )%4])>>R) ^ ((Y[(Q+3)%4])<<(32-R)); KS[1] = (X[1]) ^ ((Y[(Q+1)%4])>>R) ^ ((Y[(Q )%4])<<(32-R)); KS[2] = (X[2]) ^ ((Y[(Q+2)%4])>>R) ^ ((Y[(Q+1)%4])<<(32-R)); |