| Checksum | A checksum is a feature that warrants data integrity when saving data. In order to obtain a checksum, the basic components of a message are multiplied by a certain factor and then added up in sequence. The resultant value is then saved as the checksum. When reading the ?copy? of the data, a checksum of this can also be calculated and compared with the saved checksum of the original file. If the two checksums differ, this indicates that there is a saving error and saving must be repeated. If both checksums are identical, the data has been correctly transferred. |