void BlockOrientedCipherModeBase::ProcessData(byte *outString, const byte *inString, size_t length)
{
unsigned int s = BlockSize();
assert(length % s == 0);
unsigned int alignment = m_cipher->BlockAlignment();
bool inputAlignmentOk = !RequireAlignedInput() || IsAlignedOn(inString, alignment);
if (IsAlignedOn(outString, alignment))
{
if (inputAlignmentOk)
ProcessBlocks(outString, inString, length / s);
else
{
memcpy(outString, inString, length);
ProcessBlocks(outString, outString, length / s);
}
}
else
{
while (length)
{
if (inputAlignmentOk)
ProcessBlocks(m_buffer, inString, 1);
else
{
memcpy(m_buffer, inString, s);
ProcessBlocks(m_buffer, m_buffer, 1);
}
memcpy(outString, m_buffer, s);
inString += s;
outString += s;
length -= s;
}
}
}
void BlockOrientedCipherModeBase::ProcessData(byte *outString, const byte *inString, size_t length)
{
if (!length)
return;
unsigned int s = BlockSize();
assert(length % s == 0);
if (!RequireAlignedInput() || IsAlignedOn(inString, m_cipher->BlockAlignment()))
ProcessBlocks(outString, inString, length / s);
else
{
do
{
memcpy(m_buffer, inString, s);
ProcessBlocks(outString, m_buffer, 1);
inString += s;
outString += s;
length -= s;
} while (length > 0);
}
}
