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One-Way Hash Function

Webopedia Staff
Last Updated May 24, 2021 7:50 am

An algorithm that turns messages or text into a fixed string of digits, usually for security or data management purposes. The “one way” means that it’s nearly impossible to derive the original text from the string. A one-way hash function is used to create digital signatures, which in turn identify and authenticate the sender and message of a digitally distributed message.