Method add

src/sha3.cpp:172–213

add arbitrary number of bytes

/// add arbitrary number of bytes
void SHA3::add(const void* data, size_t numBytes)
{
  const uint8_t* current = (const uint8_t*) data;

  // copy data to buffer
  if (m_bufferSize > 0)
  {
    while (numBytes > 0 && m_bufferSize < m_blockSize)
    {
      m_buffer[m_bufferSize++] = *current++;
      numBytes--;
    }
  }

  // full buffer
  if (m_bufferSize == m_blockSize)
  {
    processBlock((void*)m_buffer);
    m_numBytes  += m_blockSize;
    m_bufferSize = 0;
  }

  // no more data ?
  if (numBytes == 0)
    return;

  // process full blocks
  while (numBytes >= m_blockSize)
  {
    processBlock(current);
    current    += m_blockSize;
    m_numBytes += m_blockSize;
    numBytes   -= m_blockSize;
  }

  // keep remaining bytes in buffer
  while (numBytes > 0)
  {
    m_buffer[m_bufferSize++] = *current++;
    numBytes--;
  }
}


/// process everything left in the internal buffer