Just work it out for yourself. Explanation of a checksum.

"The procedure that yields the checksum from the data is called a checksum function or checksum algorithm. A good checksum algorithm will yield a different result with high probability when the data is accidentally corrupted; if the checksums match, the data is very likely to be free of accidental errors."

The explanation will be the same translated into Italian, unless there are sum checksum errors in the translation. No only a joke...

[This message has been edited by Tony Hughes (edited 07-12-2010).]