Key derivation function: Difference between revisions

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:''"KDF" redirects here. For the Nazi organization, see [[Kraft durch Freude]]''

In [[cryptography]], a '''key derivation function''' (or KDF) is a function which derives one or more [[key (cryptography)|secret key]]s from a secret value such as a master key and/or other known information such as a [[password]] or [[passphrase]]. Keyusing derivationa functions[[pseudo-random internally often use afunction]]. [[cryptographicCryptographic hash function]]s are popular examples of pseudo-random functions used for key derivation.

==Uses of KDFs==