In cryptography, a key derivation function (or KDF) derives one or more secret keys from a secret value such as a master key or other known information such as a password or passphrase using a pseudo-random function. Keyed cryptographic hash functions are popular examples of pseudo-random functions used for key derivation.
Read more about Key Derivation Function: Uses of KDFs
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“This is the Key of the Kingdom:
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—Unknown. This Is the Key (l. 1–2)
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