Some bitmagic in c++.

bitmagic.cpp

#include <iomanip>
#include <string>
#include <sstream>

std::string
hexDump( const unsigned char * data, unsigned int length )
{
  std::stringstream ret;

  for ( unsigned int i = 0; i < length; ++i )
  {
    ret << std::hex << static_cast< unsigned int >( data[i] ) << std::setfill('0') << std::setw(2);
  }

  return ret.str();
}