Well, there is. Welcome to the world of checksums! TL;DR: A checksum is a number, in the form of a binary or hexadecimal value, that's been derived from a data source. The important bits to know ...

A checksum is a string of characters which uniquely identifies afile, a digital fingerprint. Change even a few bytes of a file–forexample, by infecting it with a virus or replacing an old ...

However, generating a file containing its own checksum as part of its content is a task quite daunting, if not seemingly impossible due to a paradox involved in the process. That has not stopped a ...