Comment by lucb1e

I've never really understood the difference between a KDF, hashing function, password hashing function, though it's relevant to know when writing reports (I work for a security company). We recommend Argon2/scrypt/bcrypt for password storage of course, but we call them KDFs and I'm not sure if it's correct. From my understanding, a KDF can be fast, but a PBKDF must be slow. Could you elaborate or do you know a good resource (short of a whole book on low level crypto details)?