Checksums

[david]

Hello,

Can someone explain how to compute checksums and how do they work ?

This is for a program i'm working on (
http://www.imaginet.fr/~dramboz/jview) :
the program can create databases which are composed of blocks with the
same size. I'd like to add a checksum to each block to see if the block
is corrupted (or not).

Thanks for your help

david