One-way compression function
Cryptographic primitive

In cryptography, a one-way compression function is a function that transforms two fixed-length inputs into a fixed-length output. The transformation is "one-way", meaning that it is difficult given a particular output to compute inputs which compress to that output. One-way compression functions are not related to conventional data compression algorithms, which instead can be inverted exactly or approximately to the original data.
“One-way compression function” enters the record as cryptographic primitive. Crown Archives preserves that source wording while asking what One-way, compression and function can confirm, complicate or overturn.
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This entry incorporates text from “One-way compression function” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.