arne
/
cryptopp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Clear IBM XLC warnings on PowerPC

pull/703/head
Jeffrey Walton 2018-08-12 04:06:06 -04:00
parent afe72c50f0
commit dd4f87fa11
No known key found for this signature in database
GPG Key ID: B36AB348921B1838
2 changed files with 10 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
modes.cpp
View File

@ -125,8 +125,8 @@ void CTR_ModePolicy::SeekToIteration(lword iterationCount)
int carry=0;
for (int i=BlockSize()-1; i>=0; i--)
{
unsigned int sum = m_register[i] + byte(iterationCount) + carry;
m_counterArray[i] = static_cast<byte>(sum);
unsigned int sum = m_register[i] + (iterationCount & 0xff) + carry;
m_counterArray[i] = byte(sum & 0xff);
carry = sum >> 8;
iterationCount >>= 8;
}
@ -147,10 +147,11 @@ void CTR_ModePolicy::OperateKeystream(KeystreamOperation /*operation*/, byte *ou
while (iterationCount)
{
byte lsb = m_counterArray[s-1];
size_t blocks = UnsignedMin(iterationCount, 256U-lsb);
const byte lsb = m_counterArray[s-1];
const size_t blocks = UnsignedMin(iterationCount, 256U-lsb);
m_cipher->AdvancedProcessBlocks(m_counterArray, input, output, blocks*s, BlockTransformation::BT_InBlockIsCounter|BlockTransformation::BT_AllowParallel);
if ((m_counterArray[s-1] = static_cast<byte>(lsb + blocks)) == 0)
if ((m_counterArray[s-1] = byte(lsb + blocks)) == 0)
IncrementCounterBy256();
output = PtrAdd(output, blocks*s);
@ -166,7 +167,7 @@ void CTR_ModePolicy::CipherResynchronize(byte *keystreamBuffer, const byte *iv,
CRYPTOPP_ASSERT(length == BlockSize());
CopyOrZero(m_register, m_register.size(), iv, length);
m_counterArray = m_register;
m_counterArray.Assign(m_register.begin(), m_register.size());
}
void BlockOrientedCipherModeBase::UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &params)

3
modes.h
View File

@ -242,7 +242,8 @@ protected:
void CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length);
void SeekToIteration(lword iterationCount);
SecByteBlock m_counterArray;
// adv-simd.h increments the counter
mutable SecByteBlock m_counterArray;
};
/// \brief Block cipher mode of operation default implementation