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Fingerprint

Fleeting

Fingerprint (computing) - Wikipedia

In computer science, a fingerprinting algorithm is a procedure that maps an arbitrarily large data item (such as a computer file) to a much shorter bit string

https://en.wikipedia.org/wiki/Fingerprint_(computing)

its fingerprint, that uniquely identifies the original data for all practical purposes

https://en.wikipedia.org/wiki/Fingerprint_(computing)

Fingerprint functions may be seen as high-performance hash functions used to uniquely identify substantial blocks of data where cryptographic hash functions may be unnecessary

https://en.wikipedia.org/wiki/Fingerprint_(computing)

Notes pointant ici