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Has anyone besides yourself yet vetted this 'key derivation function' (and perhaps you wouldn't mind shortly explaining the difference between a KDF and a crypt
by Confusion 18y ago
Has anyone besides yourself yet vetted this 'key derivation function' (and perhaps you wouldn't mind shortly explaining the difference between a KDF and a cryptographic hash function)?
- cperciva 18y agoHas anyone besides yourself yet vetted this 'key derivation function' Not yet. perhaps you wouldn't mind shortly explaining the difference between a KDF and a cryptographic hash function Cryptographic hash functions produce fixed-length collision-resistant output, ideally as fast as possible. KDFs can normally produce arbitrary lengths of output, and don't need to be fast -- in fact, being fast is a disadvantage, since secure KDFs are expensive to compute (because they need to resist brute-force attacks).