When compared to other families of secure hash functions (such the SHA family of algorithms), what sets a Key Derivation Function apart? When communicating, it is important to provide as much information as possible to the receiver
When compared to other families of secure hash functions (such the SHA family of
Introduction:
Hash functions are intended to accept an input and provide a fixed-length output representing a "digest" of the input. Hash functions are often employed for digital signatures and message authentication codes since their main objective is to protect the integrity of data by detecting changes to the input.
KDFs, on the other hand, are intended to convert a password or passphrase into a cryptographic key. A KDF's principal objective is to protect the derived key by adding computational labour to the task of guessing the original password, and they are widely used to securely store passwords or produce encryption keys.
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