*
* This is a simple yet powerfull checksum algorithm.
* Instead of just xor-ing the data, rotating hash
* circular shift the checksum 4 place left before xoring.
* This is a bit more stronger than simply sum the data.
*
*
* This is a simple yet powerfull checksum algorithm.
* Instead of just xor-ing the data, rotating hash
* circular shift the checksum 4 place left before xoring.
* This is a bit more stronger than simply sum the data.
*