Checksum

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Checksum is a small integer value used to protect the integrity of data by detecting errors in data that is sent through space (telecommunications) or time (storage).

In telecommunication, the sending system computes a checksum for an outgoing packets; a receiving system verifies the contents of the packet by recomputing the checksum and comparing to the value sent.

Retrieved from "http://kb.linuxvirtualserver.org/wiki?title=Checksum&oldid=2687"