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Definition of "Check Sum" |
A check sum or hash sum is a small-size datum computed from an arbitrary block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.The actual procedure which yields the check sum, given a data input is called a check sum function or check sum algorithm. |
Definition of "Check-Sum" |
A number that has been calculated as a function of some message, by adding up the bytes in the message. The [message] data is summed with out regard overflow. Perhaps this was what early checksums were. Today, however, although more sophisticated formulae are used, the term "checksum" is still used and interchangeable with the term CRC. |
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