TLDR
A key derivation function, or KDF, derives one or many secret keys from a secret value. If you've ever needed to store a password in a database or create a private key from a password, you may have used a KDF. KDFs allow child keys to be created from a master key. They can be used in applications like Bitcoin where child keys can control sections of a wallet. The number of sites that use plain-text or weak-hash password storage is frightening.via the TL;DR App
no story
Written by wagslane | Founder of Boot.dev.
Whining about coding sins since 2011. Committing coding sins for the same.
