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author | Jeffrey Walton <noloader@gmail.com> | 2017-12-17 09:07:12 -0500 |
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committer | Jeffrey Walton <noloader@gmail.com> | 2017-12-17 09:07:12 -0500 |
commit | 41da3fa7f1d534c210fcc06c873fd0cc43956fc0 (patch) | |
tree | 8b080b22b75b1ff9816c7bae43795e33fdb0d22b /cryptlib.cpp | |
parent | d7a2e0e10cd310639ffcf4762fbb1ed27c8871b2 (diff) | |
download | cryptopp-git-41da3fa7f1d534c210fcc06c873fd0cc43956fc0.tar.gz |
Use ptrdiff_t cast in BlockTransformation (GH #549)
Diffstat (limited to 'cryptlib.cpp')
-rw-r--r-- | cryptlib.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/cryptlib.cpp b/cryptlib.cpp index 55df7134..ddc829db 100644 --- a/cryptlib.cpp +++ b/cryptlib.cpp @@ -148,16 +148,16 @@ size_t BlockTransformation::AdvancedProcessBlocks(const byte *inBlocks, const by CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length);
- ptrdiff_t blockSize = static_cast<ptrdiff_t>(BlockSize());
+ const ptrdiff_t blockSize = static_cast<ptrdiff_t>(BlockSize());
ptrdiff_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
ptrdiff_t xorIncrement = xorBlocks ? blockSize : 0;
ptrdiff_t outIncrement = (flags & BT_DontIncrementInOutPointers) ? 0 : blockSize;
if (flags & BT_ReverseDirection)
{
- inBlocks += length - blockSize;
- xorBlocks += length - blockSize;
- outBlocks += length - blockSize;
+ inBlocks += static_cast<ptrdiff_t>(length) - blockSize;
+ xorBlocks += static_cast<ptrdiff_t>(length) - blockSize;
+ outBlocks += static_cast<ptrdiff_t>(length) - blockSize;
inIncrement = 0-inIncrement;
xorIncrement = 0-xorIncrement;
outIncrement = 0-outIncrement;
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