What Is a File Hash?

August 29, 2023

A file hash (or hash value) is a distinctive alphanumeric character sequence generated by applying a mathematical algorithm to file contents. The algorithm outputs a fixed string representing the file’s data and functions as a digital fingerprint.

File hashes are sensitive to changes, and minimal alterations result in a different hash. Hashes are frequently used in authentication, verifying data integrity, and secure file transfers.

Anastazija is an experienced content writer with knowledge and passion for cloud computing, information technology, and online security. At phoenixNAP, she focuses on answering burning questions about ensuring data robustness and security for all participants in the digital landscape.