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A “Key Based Key Derivation Function” is a key derivation function () that uses a key in the computation.

You can find the definition and related information describing KBKDFs in the document: “Key Derivation using Pseudorandom Functions (SP 800-108) Validation System (KBKDFVS)”, Updated: April 23, 2013, Original: March 22, 2012, Sharon S. Keller, National Institute of Standards and Technology, Information Technology Laboratory, Computer Security Division

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