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Extendable-output function

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Extendable-output function (XOF) is a variant of the cryptographic hash that allows its output to be arbitrarily long. In particular, the nature of the sponge construction makes a sponge hash a natural XOF (the regular hash functions with a fixed-size result are obtained from a sponge mechanism by stopping the squeezing phase after obtaining the fixed number of bits).[1]

References

Sources

  • Mittelbach, Arno; Fischlin, Marc (2021). "Extendable Output Functions (XOFs)". The Theory of Hash Functions and Random Oracles: An Approach to Modern Cryptography. Information Security and Cryptography. Springer International Publishing. ISBN 978-3-030-63287-8. Retrieved 2023-06-22.